CN1322354C - Display element, display-element lens, and surface panel for display device - Google Patents
Display element, display-element lens, and surface panel for display device Download PDFInfo
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- CN1322354C CN1322354C CNB200410005830XA CN200410005830A CN1322354C CN 1322354 C CN1322354 C CN 1322354C CN B200410005830X A CNB200410005830X A CN B200410005830XA CN 200410005830 A CN200410005830 A CN 200410005830A CN 1322354 C CN1322354 C CN 1322354C
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Abstract
To expand the visual field angle of a display device in the horizontal direction, and to improve the visibility. The lens 6 is mounted to an opening 3 of a lamp 2 to cover the entire body. The lens 6 consists of three lens sections tailored to the opening section of the opening 3 side front surface of small rooms 3a to 3c. The fundamental shape of each lens section is same. The cross section shape of each lens section projected on the horizontal surface including the optical axis is a concaved shape and the cross section shape projected on the vertical surface including the optical axis is a projecting shape. The light beams radiated from light emitting tubes 5a to 5c mounted on the rooms 3a to 3c are led to the external through each lens section.
Description
The application is dividing an application of Chinese patent application number 97103387.0 a cases.
Technical field
The present invention relates to the equipment such as display device that are installed in indoor and outdoors, more particularly, it relates to the suitably method of diffusion light, and this is only sent by display element in the equipment such as display device.
Background technology
Usually, luminotron as sending three cold cathode discharge tubes of red, green and blue light respectively, is as the light source that is installed in display element in the indoor and outdoors large-scale display device.These luminotrons are mainly as the light source in the street signal plate, the advertising tower etc.The display element that has above-mentioned light source has the lamp box 2 of putting into display element main body 1, and there is a perforate 3 in the place ahead of lamp box 2, as shown in Figure 1 to Figure 3.Have by dividing plate 4a and 4b mutual separated interval 3a, 3b and 3c in lamp box 2 inside.Each interval 3a, 3b or 3c contain red (R) luminotron 5a respectively at its interval top, green (G) luminotron 5b or indigo plant (B) luminotron 5c.One end of each fluorescent tube is in line and is fixed on the preceding top of lamp box 2.Transparent polycarbonate cap 8 protection whole unit exempt from dust and external force, and perforate 3 places before being fixed on.
Common display element is designed to as mentioned above.Fig. 4 and Fig. 5 represent in the above-mentioned configuration from red (R) luminotron 5a, green (G) luminotron 5b and the luminous light distribution property curve of indigo plant (B) luminotron 5c.As shown in Figure 4, the light that penetrates up and down from lamp box 2 was equating before 60 degree, and is penetrating the light of a great deal of from lamp box 2 in 0 degree direction.Yet when light was propagated to the right and left, this light was subjected to the interference of lamp box 2 inwalls and dividing plate 4a and 4b.So, as shown in Figure 5, to compare with direct light, light is when propagating than wide-angle, and light quantity reduces suddenly.To the right and the light quantity propagated of about left 60 degree places be approximately half that propagate light quantity in 0 degree place.The difference of the angle of angle during maximum amount and maximum amount one half is referred to as the visual angle.
Display device generally in the horizontal direction should be in display message in the broad range more than vertical direction.Yet as mentioned above, the horizontal view angle of common display element is less than the vertical angle of view.So requirement always can enlarge the horizontal view angle.
When display device is installed in when outdoor, display element has the shadow shield of the sight blocked.Yet shadow shield not only blocks daylight, and has blocked the light (light of Chuan Boing especially up and down) that sends from luminotron, thereby reduces luminescence efficiency.Because luminescence efficiency descends, the light that sends from luminotron and the effective efficiency of display message also descend.So, can not easily confirm the information that on display device, shows, thereby reduce visibility.
Recently, the display element that has the luminotron display element that had a light emitting diode (LED) replaces.Yet because LED sends less light quantity than other light sources, and its visual angle is little, that is, it is very strong that LED is designed to directivity, as shown in Figure 6.Because these features use LED more to require to enlarge the visual angle of horizontal direction as the display device of display element.
Summary of the invention
The present invention is intended to enlarge the horizontal direction visual angle of display device.
The visibility of display device is improved at the visual angle that the present invention also looks to utilizing horizontal direction to enlarge.
The invention provides a kind of display element, wherein by preceding perforate ejaculation light
Before lens are fixed in the perforate, make these lens during perpendicular cuts, present the convex surface across this optical axis on optical axis, these lens during horizontal resection, present the concave surface across this optical axis on optical axis.
The present invention also provides a kind of display element by preceding perforate ejaculation light, wherein
Before lens are fixed in the perforate, make these lens on optical axis during perpendicular cuts, it be at least in the perforate outside for convex surface and perforate inboard for concave surface the two one of; And
A kind of medium is filled in the display element that comprises these lens, and the refractive index of described medium is greater than the refractive index of lens.
The invention provides a kind of display element lens, it is fixed in the preceding perforate of display element, and outwards penetrates from the display element inner light source and penetrate next light, wherein
These lens during perpendicular cuts, present the convex surface across optical axis on optical axis, these lens during horizontal resection, present the concave surface across optical axis on optical axis.
The invention provides a kind of display device surface panel, it is placed in the display device, and a plurality of display elements that penetrate light by preceding perforate are fixed on this surface panel, and outwards draws the light that each display element penetrates from it, wherein
Part towards each display element, during perpendicular cuts, it presents the convex lens across optical axis on optical axis, and during upper edge optical axis cutting in the horizontal direction, it presents the concavees lens across optical axis.
The invention provides a kind of display device surface panel, it is placed in the display device, and outwards draws the light that each display element penetrates from it, wherein
During horizontal resection, it presents the concavees lens across optical axis on optical axis for part towards each display element; And
Described panel with lens shape face forms a groove based on the arrangement position of display element on across surface level.
The invention provides a kind of display device surface panel, it is placed in the display device, and outwards draws the light that each display element penetrates from it, wherein
One towards the part of each display element or in the display device part of a plurality of display elements, on optical axis, during horizontal resection, present concavees lens across optical axis; And
Described panel with lens shape face forms a groove based on the arrangement position of display element on across surface level.
Display element according to first aspect present invention penetrates light by preceding perforate.Establish lens at preceding tapping.When optical axis cut, it was a concave surface in the direction across optical axis to lens in the horizontal direction.
Display element according to second aspect present invention penetrates light by preceding perforate.Establish lens at preceding tapping.When optical axis cut, it was a convex surface in the direction across optical axis to lens in vertical direction, and in the horizontal direction when optical axis cuts, it is a concave surface in the direction across optical axis.
Display element according to third aspect present invention penetrates light by preceding perforate.At preceding tapping one lens are arranged.When optical axis cut, it was convex surface and inboard for concave surface has at least a kind of situation to set up among the two in perforate to lens in the perforate outside in vertical direction, and the medium refraction index that is full of lens is greater than the display element refractive index that comprises lens.
For example, comprise a plurality of light sources that separated by dividing plate according to the present invention first to the display element of the third aspect.
Above configuration has been arranged, and requiring lens is painted colors with calibration light source ejaculation light.Also require a kind of striated mask pattern of design to expand along one of them direction in the horizontal direction of lens and the vertical direction.
Lens according to the first aspect present invention display element are the preceding tappings that are placed on display element, and the light source that is installed in the display element outwards penetrates light, and lens are in the horizontal direction when optical axis cuts, and it is a concave surface on across the direction of optical axis.
Lens according to the second aspect present invention display element are the preceding tappings that are placed on display element, the light source that is installed in the display element outwards penetrates light, and lens in vertical direction when optical axis cuts, it is a convex surface in the direction across optical axis, and in the horizontal direction when optical axis cuts, lens are concave surface in the direction across optical axis.
Recommendation is painted according to the display element lens of the present invention first and second aspects, and this can proofread and correct from the luminous color of display element, and designs a kind of striated mask pattern along one of them direction expansion in the horizontal direction of lens and the vertical direction.
The panel of first aspect present invention is fixed on the display device, this device contains a plurality of display elements that send light by preceding perforate, and will outwards draw from the light that respective display elements is sent, and when optical axis cut, the panel of corresponding each display element part was a concave surface in the direction across optical axis in the horizontal direction.
The panel of second aspect present invention is fixed on the display device, this device contains a plurality of display elements that send light by preceding perforate, and will outwards draw from the light that respective display elements is sent, and in vertical direction when optical axis cuts, the panel of corresponding each display element part is a convex surface in the direction across optical axis, when optical axis cut, the panel of corresponding each display element part was a concave surface in the direction across optical axis in the horizontal direction.
Preferably, panel according to the present invention first and second aspects has the function of correction from the display element glow color, and design a striated mask pattern along at least one direction expansion in the horizontal direction of lens and the vertical direction, this direction is relevant with the position of lens in the display element arrangement.
Panel according to third aspect present invention is fixed on the display device, this device contains a plurality of display elements, and will outwards draw from the light that respective display elements is sent, when optical axis cut, the panel of corresponding display element part was a concave surface in the direction across optical axis in the horizontal direction.
Panel according to fourth aspect present invention is fixed on the display device, this device contains a plurality of display elements, and will outwards draw from the light that respective display elements is sent, when optical axis cut, the panel of each display element or a plurality of display element part was a concave surface in the direction across optical axis in the corresponding display device in the horizontal direction.
Preferably, according to panel formation flute profile (channel) lens of the present invention third and fourth aspect, trough of a groove is along extending on the surface level, and this groove shape is relevant with the arrangement of display element.Otherwise preferably, lens are to make with display element to arrange relevant circular or oval concave surface.
Preferably, the striated mask pattern that designs on above-mentioned panel is along one of them direction expansion in the horizontal direction of lens and the vertical direction, and this direction is relevant with the lens position in the display element arrangement.Preferably also be that this panel application is on the display device of light emitting diode as display element.
According to the display element of first aspect present invention, when optical axis cut, the lens that are fixed in the perforate were concave surface in the direction across optical axis in the horizontal direction.The scope that the light that penetrates from light source is expanded in the horizontal direction is wealthyer, thereby has enlarged the visual angle of horizontal direction.This situation is suitable in according to the lens of first aspect present invention display element, also is applicable to the panel according to the present invention the first, the third and fourth aspect.
In the display element according to second aspect present invention, when optical axis cut, said lens was a convex surface in the direction across optical axis in vertical direction.Therefore, the light that penetrates from light source is blocked vertically to expand attacks, and the light along continuous straight runs of assembling diffusion, thereby has increased the light quantity of along continuous straight runs diffusion.This situation is suitable in according to the lens of second aspect present invention display element and panel.
When display element has shadow shield, can stop light diffusion in vertical direction, can reduce the light quantity of being blocked by shadow shield, thereby improve luminescence efficiency.
In the display element according to second aspect present invention, the scope that the light that penetrates from light source spreads in the horizontal direction is bigger, because only enter into air from medium, considers the refractive index contrast of light, and output angle (refraction angle) is greater than incident angle.On the other hand, even if based on the refractive index contrast of light, output angle (refraction angle) is greater than incident angle, light spreads still in vertical direction and is blocked, and assemble to center (optical axis) because in vertical direction when optical axis cuts, lens are convex surface in the direction across optical axis.As a result, the light that causes the minimizing of light quantity to be collected on the vertical direction owing to the horizontal direction diffusion light compensates, thereby has increased the light quantity that spreads on the horizontal direction.
Description of drawings
Fig. 1 is the oblique view of common display element;
Fig. 2 is the side view of common display element;
Fig. 3 is the front view (FV) of common display element;
Fig. 4 represents that light is at the distribution character curve of vertical direction in the common display element;
Fig. 5 represents light distribution character curve in the horizontal direction in the common display element;
Fig. 6 represents the distribution character curve of light among the LED;
Fig. 7 is the sectional view that is applied to display device in the first embodiment of the invention;
Fig. 8 is the front view (FV) that is fixed on display module in the above-mentioned display device;
Fig. 9 is the oblique view according to display element in the first embodiment of the invention;
Figure 10 is the side view according to display element in the first embodiment of the invention;
Figure 11 is the front view (FV) according to display element in the first embodiment of the invention;
Figure 12 is the side view (first embodiment) of lens during from the lens unilateral observation;
Figure 13 is the sectional view (first embodiment) of lens when observing from the top;
Figure 14 is the rear view (first embodiment) of lens;
Figure 15 represents an ingredient (first embodiment) of lens;
Figure 16 represents light refraction (first embodiment) in vertical direction;
Figure 17 represents light refraction (first embodiment) in the horizontal direction;
Figure 18 is according to first embodiment of the invention, light distribution curve in vertical direction in the expression display element;
Figure 19 is according to first embodiment of the invention, light distribution character curve in the horizontal direction in the expression display element;
Figure 20 is the oblique view according to display element in the second embodiment of the invention;
Figure 21 is the sectional view according to display element in the second embodiment of the invention;
Figure 22 is the front view (FV) according to display element among second embodiment;
Figure 23 is the side view according to display element among second embodiment;
Figure 24 is according to second embodiment of the invention, the top view of lens when observing from the top;
Figure 25 is the front view (FV) according to lens in the second embodiment of the invention;
Figure 26 represents an ingredient according to lens among second embodiment;
Figure 27 represents according to light refraction in vertical direction among second embodiment;
Figure 28 represents according to light refraction in the horizontal direction among second embodiment;
Figure 29 explanation is according to refraction principle in the second embodiment of the invention;
Figure 30 represents the arrangement plan according to lens in the third embodiment of the invention;
Figure 31 A and 31B represent to be applied to the outside drawing of display module in the four embodiment of the invention (device);
Figure 32 A, 32B and 32C represent according to the panel in the four embodiment of the invention;
Figure 33 is the zoomed-in view of A part among Figure 32 C;
Figure 34 represents to be applied to display module distribution character curve in the horizontal direction among the 4th embodiment;
Figure 35 A, 35B and 35C represent according to the panel in the fifth embodiment of the invention;
Figure 36 is the zoomed-in view of A part among Figure 35 C;
Figure 37 represents according to the panel in the sixth embodiment of the invention;
Figure 38 A, 38B and 38C represent according to the panel in the seventh embodiment of the invention;
Figure 39 A, 39B and 39C represent according to the panel in the eighth embodiment of the invention; And
Figure 40 A, 40B and 40C represent according to the panel in the ninth embodiment of the invention.
Embodiment
By the reference accompanying drawing embodiments of the invention are described in detail.In the conventional system a similar unit in the accompanying drawings, a designated identical discriminating digit.
First embodiment
Fig. 7 is the sectional view that is applied to display device among the present invention (equipment) 20.In Fig. 7, display module 21 comprises for example 32 display elements 1 of eight row of four lines shown in Fig. 8.Display device 20 contains a plurality of display modules 21 that are arranged in array.
The vent fan 17 of discharge display device 20 heats and the air intake opening 20 ' of suction fresh air are installed in the back side of display device 20.Be shown 19 drives of interior ventilating fan and the circulation in display device 20 of device by the fresh air of air intake opening 20 ' suction.The heat that described display module 21 produced after the air of circulation was got rid of in display device 20.The heat that well heater 18 produces offers display module 21, is used for heating the luminotron in the display module 21.
Control printed-wiring board (PWB) 23 is fixed on the back side of display module 21.The arrow that solid line is represented among Fig. 7 indicates the flow direction of air among display device (unit) 20.
Fig. 9 to Figure 11 represents the structure of display element 1.Fig. 9 is the oblique view of display element 1.Figure 10 is the side view of display element 1, and Figure 11 is the front view (FV) of display element 1.
Figure 12 is the side view of lens component 6a.As shown in Figure 12, to face the side of lamp box 2 be protruding to lens component 6a.This also is applicable to other lens component 6b and 6c.Can to be designed to face lamp box 2 be a plane to each lens among the lens component 6a to 6c, and another side is a convex surface.Perhaps, two faces of lens component 6a to 6c can all be protruding, become three convex lens.That is, at least one face of lens component should be protruding.
Figure 13 is the sectional view of lens 6.As shown in Figure 13, the lens component 6a to 6c that places corresponding to interval 3a to 3c has the concave surface that faces lamp box 2.Each plane and another side that can be designed to face lamp box 2 is a concave surface among the lens component 6a to 6c.Perhaps, the two sides can be a concave surface.That is, the section of lens component will have a concave surface at least.
Figure 14 is the rear view of lens 6.As shown in Figure 14, the groove 6d of partition lens part 6a to 6c and 6e are such structures, and under lens 6 were fixed to situation on the lamp box 2, the dividing plate 4a of 3a to 3c and the front end of 4b can be inserted among groove 6d and the 6e between perforate 3 punishment septal areas.
Figure 15 represents from being connected to the lens component 6c that interval 3c tapping takes out.In Figure 15, the line C-C shown in the dotted line that length replaces shows, when optical axis cut, lens component 6c was a convex surface on across the direction of optical axis in vertical direction.
Line a-a shows, when cut with horizontal direction the top of lens and bottom, lens component 6c was a concave surface on across the direction of optical axis.Line b-b shows, when optical axis cut, lens component 6c was a concave surface on across the direction of optical axis in the horizontal direction.That is, when cutting with horizontal direction, the side of lens component 6c is a concave surface on across the direction of optical axis.
With reference to Figure 16 and Figure 17, the anaclasis that lens component 6c is caused is described below.
Figure 16 represents the anaclasis that lens component 6c causes in vertical direction.In Figure 16, the alternate long and short dash line of scioptics part 6c radial center is an optical axis.The point of lens component 6c right side arrow indication is a light source among Figure 16.From the light path of light source ejaculation, and solid line is represented the actual light path that reflected by lens component 6c under the no lens component 6c situation of broken string expression.
As shown in Figure 16, the light that penetrates from light source spreads equably towards a plurality of directions under no lens component 6c situation.On the other hand, when lens component 6c puts into light path,, enter the anaclasis deflection optical axis of lens component 6c because lens component 6c is a convex surface when optical axis cuts in vertical direction.
Compare with the situation (shown in Fig. 4) of no lens component 6c, the light that penetrates from luminotron 5c has directivity, and this light is assembled with the place ahead at lens component 6c, as shown in Figure 18.
Figure 17 represents the refraction of horizontal direction glazing scioptics part 6c.The connotation of every line shown in Figure 17 is identical with the connotation of every line shown in Figure 16.
As shown in Figure 17, when the light that penetrates from luminotron 5c entered lens component 6c, its refraction departed from optical axis, because lens component 6c is a concave surface when optical axis cuts in the horizontal direction.Compare with the situation (shown in Fig. 5) of no lens component 6c, more a spot of light is assembled in lens component 6c the place ahead, and this light has the directivity of along continuous straight runs diffusion.That is, the visual angle on the horizontal direction has enlarged.
Because directivity on the horizontal direction and the directivity on the vertical direction combine, the light of Shou Jiing spreads in the horizontal direction in vertical direction.So, the light along continuous straight runs ejaculation in very large range that the distribution character curve representation of light is a large amount of, as shown in Figure 19.Therefore, the visual angle has enlarged, and can improve the visibility of display device 20.
According to this embodiment of the invention, each interval perforate of depositing light source is a rectangle, but also can be circular ....In addition, light source can be CRT (cathode-ray tube (CRT)), globular bulb, or the like, to replace the straight fluorescent tube in the foregoing description.It also can be flat-plate light source such as LED point array element.This also is applicable to other embodiment that narrate later.
According to this embodiment of the invention, Kuo San light is by each is assembled among the lens component 6a to 6c in vertical direction, this lens component is concave surface (as shown in Figure 16) in vertical direction when optical axis cuts, so the minimizing of diffusion light quantity on can the compensation level direction.For example, the environment of display device 20 may guarantee enough light quantities are arranged on the horizontal direction and need not to collect the light that spreads on the vertical direction.A real example is to be used for than display device 20 in the outdoor dark room.Therefore, each differs when optical axis cuts in the horizontal direction and is decided to be convex surface among the lens component 6a to 6c.Whether decision lens component 6a to 6c should be convex surface depends on environment, purposes, light source applicatory, or the like.
Second embodiment
Figure 29 represents according to the refraction principle in the second embodiment of the invention.
Being placed on from the transparency material border of refractive index (n＞1) is the light source P at H degree of depth place, is that the light of i reflects on the border from light source P (to the luminous pointolite of all directions) output angle, and enters air with refraction angle r.Seemingly (=H/n) p point is exported from degree of depth h when therefore, penetrating from the light of light source P.So when observing from the top, light source seemingly occurs at degree of depth h place.In this example, h is the empty degree of depth, and p is the virtual image of P.
Therefore, light reflects the back propagation on the border of different refractivity medium.According to second embodiment, the diffusion in the horizontal direction of the light of each ejaculation is because the refraction of light on the different refractivity medium from luminotron 5a to 5c.
Figure 20 is the oblique view according to display element in the second embodiment of the invention 1.Figure 21 is the sectional view according to display element in the second embodiment of the invention 1, and Figure 22 is its front view (FV).In these figure, the unit that is similar in the first embodiment of the invention is indicated with identical numeral.
The lamp box 2 that comprises interval 3a to 3c abrim refractive index greater than the transparent medium 7 of air, as silicon rubber (representing) with a lot of pores, or the like.Lens 11 are placed on perforate 3 places of lamp box 2.Medium 7 is filled in the lamp box 2, and seals with lens 11.
According to second embodiment of the present invention, lens 11 are to be made by polycarbonate.It also can be made with any other material, but requires to satisfy following condition, because the basis that makes light produce refraction is the difference of refractive index.
n＞n
o＞1
N wherein, n
oWith 1 represent medium 7 respectively, the refractive index of lens 11 and air.
Figure 23 is the side view of lens 11, and Figure 24 is from views last or lens 11 when observing down, and Figure 25 is the front view (FV) of lens 11.
When lens 11 in vertical direction when optical axis cuts, as shown in Figure 23 to Figure 25, it has a plane (towards lamp box 2 (luminotron 5a to 5c)), another is a convex surface.
Figure 26 represents a part (in first embodiment of the invention, below being referred to as lens component 11a) of place, the perforate place lens 11 of each among the interval 3a to 3c.The shape of lens component 11 is identical with the shape of each among the interval 3a to 3c.The shape of lens component 11a is described in detail as follows with reference to Figure 26.
Line C-C among Figure 26 shown in the dot-and-dash line shows, when optical axis cut, it was a convex surface on across the direction of optical axis to lens component 11a in vertical direction.Line a-a shows that lens component 11a along continuous straight runs is when top and bottom cutting, and it is the plane.Line b-b shows, when optical axis cut, it was the plane on across the direction of optical axis to lens component 11a in the horizontal direction.
With reference to Figure 27 and Figure 28, light is described as follows by the refraction of said lens part 11.
Figure 27 represents light scioptics part 11a refraction in vertical direction.In Figure 27, the dot-and-dash line at scioptics part 11a center is the optical axis of lens component 11a, and the pointed point of lens component 11a right side arrow is a light source.Dotted line is illustrated in the situation of no lens component 11a and medium 7, from the light path of light source ejaculation.Solid line is represented the actual light path that light is reflected by lens component 11a.
In the situation of no lens component 11a, the light that penetrates from light source scatters after the optical axis refraction is departed from interface between medium 7 and the air.On the other hand, when lens component 11a is placed in the light path, enter the anaclasis deflection optical axis of lens component 11a, because lens component 11a is a convex surface when cutting in vertical direction, the optical convergence effect of lens component 11a greater than the vertical direction glazing by the diffusion effect of medium 7, as shown in Figure 27.
Figure 27 does not show the refraction of light on interface between medium 7 and the air, in order that only how scioptics part 11a or the situation when not having lens component 11a of expression more clearly.
Figure 28 represents the light refraction of scioptics part 11a in the horizontal direction.In Figure 28, the connotation of dotted line and solid line identical with shown in Figure 27.
As shown in Figure 28, in the situation of no lens component 11a and medium 7, the light that penetrates from light source spreads to all directions equably.On the other hand, when lens component 11a is placed in the light path, this light reflects on the interface and departs from optical axis, because the refractive index of lens component 11a is less than the refractive index of medium 7, and greater than the refractive index (refraction between lens component 11a and the air on the interface is not shown among Figure 28, because this refraction angle is very little) of air.
Therefore, also can obtain effect among first embodiment according to second embodiment.Compare with first embodiment of the invention, second embodiment is than easier design of first embodiment of the invention and manufacturing lens.
According to first and second embodiment, lens are arranged all in each display element.But panel also can be fixed on display module or the display device covering entire display screen, thereby replaces the lens of each display element, so the present invention can be applicable to existing display module or display device.In this case, the shape that towards the shape of each display element part should be said lens to be obtaining similar effects,
In first embodiment of the invention, it is convex surface that lens component 11a needs not to be when cutting in vertical direction.For example, can be recessed towards the interface of medium 7 one sides, and be flat towards the opposite side interface of air.Also have, lens component 11a faces air and medium 7 places can be convex surfaces.When this lens component 11a cut in the horizontal direction, it was a concave surface on across the direction of optical axis, so that can further enlarge the visual angle.
The 3rd embodiment
Utilize the luminotron 5a to 5c send ruddiness, green glow and blue light respectively as light source, according to the display element 1 of first and second embodiment can display color point-like information.The color rendering of display element 1 depends on the light that luminotron 5a to 5c (light source) sends.So every kind of color sending from respective sources preferably has high color reproducibility.Yet it is unpractiaca that such light source is provided.Third embodiment of the invention is designed to also can improve color reproducibility.
Figure 30 represents the structure according to lens 25 among the 3rd embodiment.Structure and method for making according to lens 25 among the 3rd embodiment are described below with reference to Figure 30.
According to the lens 25 among the present invention first and second embodiment is to be fixed on the display element 1.So three lens components 26 to 28 of lens 25 send the luminotron 5b and the luminotron 5c that sends blue light of green glow respectively towards the luminotron 5a that sends ruddiness.
Each all is placed in the mould separately and makes in the lens component 26 to 28, and for example the pigment with appropriate amount is filled in the resin mold, and the amount of this pigment depends on the color of the light that sends from corresponding luminotron, makes that this color can be consistent with human visual system.When optical axis cut, it was the plane on across the direction of optical axis to lens component 26 to 28 in vertical direction, and during upper edge optical axis cutting in the horizontal direction, it is a concave surface on across the direction of optical axis.Lens 25 are designed to a mask pattern and serve as along the framework at lens component 26 to 28 edges, cover the edge of lens component 26 to 28, and are to become as a whole with the insert molding method making lens component 26 after 28.
Can select the color of mask pattern 29 according to factors such as purposes, and it is not particularly limited.Yet, be black according to the mask pattern color in the third embodiment of the invention.Though do not express among Figure 30, when lens component 26 to 28 integrators, used parts such as projecting member that lens 25 are fixed on the display element 1 yet.
When lens 25 are made and be connected on the display element 1 according to the method described above,, painted to lens component 26 to 28 to proofread and correct each luminous color from luminotron 5a to 5c with pigment according to the mankind's visual characteristic.Because lens component 26 is concave surface when each cuts in the horizontal direction in 28, enter that the light of each flatly spreads to a plurality of directions in the lens component 26 to 28.As a result, improve color reproducibility, strengthened visibility, and enlarged the horizontal view angle.In addition, because mask pattern can absorb external reflection of light, can further improve contrast and visibility.
When having revised when light source sends the color of light, the element of common display shown in Fig. 1 also should be equipped with band color substance (color filter, or the like) and be attached to transparent polycarbonate cap 8 and make color and revise.But when the 3rd embodiment is applied to display element 1, the trouble that can avoid adhering to this material.
According to the 3rd embodiment, lens component 26 is the plane when each cuts in vertical direction in 28, but also can be convex surface.The vertical frame of mask pattern 29 can be carefully, perhaps even remove it so that further enlarge visual angle on the horizontal direction.Surface panel can be designed to part corresponding to each display element 1 and have the structure identical with lens 25.
The 4th embodiment
Figure 31 A and Figure 31 B represent to use display module 31 outward appearances of LED as display element.
As shown in Figure 31 A and Figure 31 B, display module 31 comprises as the display panel 32 of front display screen with at the shell 33 at back.Many LED34 are arranged on the display panel 32, and drive circuit board is arranged on the shell 33 with excitation LED34.
LED34 comprises and is installed in the LED34a that glows on the display panel 32, the LED34b of green light and the LED34c of blue light-emitting.These LED34a to LED34c install in groups, and three LED34a to 34c show a pixel (point-like) information, as shown in Figure 31 A.Be applied to display module 31 according to the surface panel in the four embodiment of the invention.
Figure 32 A to Figure 32 C represents according to the surface panel in the four embodiment of the invention 41.The solid line circle is pointed out the shape of part A among Figure 33 presentation graphs 32C.With reference to Figure 32 A, 32B, 32C and 33, the structure of surface panel 41 is described in detail as follows.
This surface panel 41 is securing as covering display panel 32.As shown in Figure 32 B and Figure 32 C, surface panel 41 outsides are a plane, but its inboard (towards LED34) has the groove of a lot of capwises.Outside these grooves can be arranged in or in both sides.
Part A shown in Figure 32 C is towards a pixel that comprises that three LED34a to 34c form.As shown in Figure 33, a pixel has two grooves 42 and 43.
According to four embodiment of the invention, d
1Be not equal to d
2(d
1≠ d
2), d
1The curvature at place is less than d
2The curvature at place, it be the reasons are as follows.That is, because LED34a is placed on the LED34c, face LED34b is arranged to them and overlaps in the horizontal direction, shown in Figure 31 A.The disastrous effect that can suitably finish the diffusion of overlapping some place horizontal direction but follow contrast to reduce.
Figure 34 represents the distribution character curve of light on the horizontal direction of display module 31, and this display module is equipped with the surface panel 41 that comprises this groove 42 and 43.As shown in Figure 34,, pass the light of surface panel 41, can more enlarge than the visual angle the situation that directly penetrates light from LED34 (shown in Fig. 6) by outwards shooting out from LED34.
According to the 4th embodiment of the present invention, display module 31 is equivalent to a display device, and promptly single display module 31 is as a display device.Yet in a lot of actual conditions, a plurality of display modules 31 are formed single display screen (display device).So surface panel can manufacture and cover a plurality of display modules 31, comprise a cover that covers entire display screen.
According to four embodiment of the invention, groove 42 and 43 is arranged to as mentioned above.Yet relevant with the arrangement of LED34, groove 42 and groove 43 can be arranged to mutual oblique.In these situations, during the along continuous straight runs cutting, groove is a concave surface on across the direction of optical axis, thereby has enlarged the visual angle of horizontal direction.
The 5th embodiment
Figure 35 A to Figure 35 C represents according to surface panel in the fifth embodiment of the invention 51.Surface panel 51 is applied to the display module 31 shown in Figure 31 A and Figure 31 B.
As shown in Figure 35 A to Figure 35 C, groove unit 52 is towards the LED34 of surface panel 51.Groove unit 52 is rectangles.Each groove unit 52 is towards two pixels of arranging up and down (each LED34 constitutes a part of pixel), and in the display module 31 shown in Figure 31 A and Figure 31 B pixel on the horizontal direction.That is, vertical interval equals the twice of level interval D.
The section of part A shown in Figure 36 presentation graphs 35C.Part A is corresponding to a groove unit 52.
As shown in Figure 36, groove unit 52 comprises two grooves 53 and 54 of vertical direction trend.Groove 53 is towards LED34b, and groove 54 is towards LED34a and 34c.When each bar along continuous straight runs cut in the groove 53 and 54, it was a concave surface towards the face of LED34.So the light that penetrates from each LED34 has spread in the horizontal direction, thereby has obtained as identical effect among the 4th embodiment.
The 6th embodiment
Figure 37 is the front view (FV) according to surface panel in the sixth embodiment of the invention 61.Surface panel 61 also can be applicable to the display module 31 shown in Figure 31 A and the 31B.
As shown in Figure 37, surface panel 61 is at the striated mask pattern 62 of the outside of panel along continuous straight runs expansion.
In the 4th embodiment shown in Figure 32 A to 32C on the back side one side of surface panel 41, or in the 5th embodiment shown in Figure 35 A to 35C on the back side one side of surface panel 51, the mask pattern of design trough of belt is made surface panel 61.
Part A shown in Figure 37 is towards the LED34 of a pixel.Consider the arrangement (the corresponding pixel of each LED) of LED34, designing mask pattern 62 can enlarge the vertical angle of view and improve contrast (raising visibility) on surface panel 61.
The 7th embodiment
Figure 38 A to Figure 38 C represents according to the surface panel in the seventh embodiment of the invention 71.Surface panel 71 also can be applicable to display module 31.
According to the 4th to the 6th embodiment of the present invention, the groove on the surface panel vertically extends.On the other hand, according to the 7th embodiment, groove can substitute with recessed part 72, i.e. semisphere concave surface shown in Figure 38 A to 38C.
Each recessed part 72 is towards the LED34 of a pixel.When cutting owing to that side panel along continuous straight runs towards LED34 is concave surface, and the scope that light spreads in the horizontal direction is wealthyer, thereby has enlarged the horizontal view angle.
The 8th embodiment
Figure 39 A to 39C represents according to the surface panel in the eighth embodiment of the invention 81.Surface panel 81 also can be applicable to the display module 31 shown in Figure 31 A to Figure 31 B.
In seventh embodiment of the invention, towards that routine surface panel 81 of LED34 a recessed part 82 is arranged, it is towards the LED34 of each pixel.
The top view of recessed part 82 is ellipses, and it has the vertical major axis and the minor axis of level.So resulting curvature curvature of resulting when vertically the cutting during cutting of each recessed part along continuous straight runs is as shown in Figure 39 B and Figure 39 C.So, compare with seventh embodiment of the invention, can reduce the vertical diffusion of light, and the horizontal proliferation scope of water is wideer.That is, can successfully improve visibility.
The 9th embodiment
Figure 40 A to Figure 40 C represents according to the surface panel in the ninth embodiment of the invention 91.Surface panel 91 also can be applicable to the display module 31 shown in Figure 31 A and Figure 31 B.
According to the 7th of the present invention and the 8th embodiment, recessed part is the unit formation with LED34, the corresponding pixel in each unit.On the other hand, according to ninth embodiment of the invention, recessed part 92 is to constitute in the unit with LED34 on LED34 one side.
Recessed part 92 is shaped as an ellipse, and it has the vertical major axis and the minor axis of level, as shown in Figure 40 A to Figure 40 C.So the 9th embodiment can obtain and the 8th the identical effect of embodiment.
As the 7th and the 8th embodiment, when recessed part is when being used for covering the pairing LED34 of pixel, the light that penetrates from each LED34 (34a to 34c) changes with recessed part and the relative position the LED34 to the incident angle on recessed surface.So, be difficult in fact make that the light of each ejaculation similarly spreads among the LED34a to 34c.
Yet, when recessed part 92 forms towards each LED34, as shown in Figure 40 A to 40C.The light of each ejaculation forms single pixel from LED34a to 34c, and this light can easily spread equally, when penetrating as it.As a result, can prevent that Show Color from becoming with the visual angle on the display screen, avoid contrast to descend, thereby improved visibility.
According to the 7th of the present invention to the 9th embodiment (surface panel), it goes without doing mask pattern.Yet,, make the such a kind of mask pattern of mask pattern as shown in Figure 37 62 on can every surface panel in each embodiment as long as mask pattern can improve contrast.In addition, according to the 9th embodiment of the present invention, each recessed part 92 corresponding each LED34.So panel can design like this, promptly can rectifying plane to the color of the light of LED34.
According to the 4th to the 9th embodiment of the present invention, the present invention is applied to all with the display device (assembly) of LED as display element.Display element is not limited to LED, and the present invention can have a lot of application.For example, the present invention can use and can show the display element (device) that comprises a large amount of Pixel Information, as CRT.
As mentioned above, the light that penetrates from display element is spread by lens, is concave surface during according to this lens along continuous straight runs cutting of the present invention.So, can enlarge the horizontal view angle.
Because lens are convex surface when vertically cutting, can not change the shape of lens and avoid light diffusion in vertical direction, the visual angle is little in vertical direction, and the visual angle is big in the horizontal direction, light quantity is big.This smooth distribution characteristics realizes high visibility.
In addition, according to the present invention, because in the display element that medium is filled in lens contact bigger than the index of refraction in lens, the light that spreads from light source can level scatter on the interface between lens and the medium.Therefore, can enlarge visual angle on the horizontal direction.
Claims (4)
1. display device surface panel, it is placed in the display device and outwards draws the light that penetrates from each display element, wherein,
When horizontal resection on optical axis, present concavees lens across optical axis towards the part of each display element; And
Described panel with lens shape face is based on the arrangement position of display element and form groove on across surface level.
2. display device surface panel, it is placed in the display device and outwards draws the light that penetrates from each display element, wherein,
When horizontal resection on optical axis, present concavees lens across optical axis towards the part of each display element or a plurality of display elements in the display unit; And
Described panel with lens shape face is based on the arrangement position of display element and form groove on across surface level.
3, according to the display device surface panel of claim 1 or 2, wherein,
Described panel has the striated mask pattern of expansion at least in the horizontal direction based on the arrangement position of display element.
4, according to the display device surface panel of claim 1 or 2, wherein,
Described panel application is used as the display device of display element in light emitting diode.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7484196 | 1996-03-28 | ||
| JP074841/1996 | 1996-03-28 | ||
| JP288079/1996 | 1996-10-30 | ||
| JP28807996A JPH09319316A (en) | 1996-03-28 | 1996-10-30 | Display element, display element lens, and display device surface panel |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97103387 Division CN1164658A (en) | 1996-03-28 | 1997-03-27 | Display element, display-element lens, and surface panel for display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1619353A CN1619353A (en) | 2005-05-25 |
| CN1322354C true CN1322354C (en) | 2007-06-20 |
Family
ID=26416019
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410005830XA Expired - Fee Related CN1322354C (en) | 1996-03-28 | 1997-03-27 | Display element, display-element lens, and surface panel for display device |
| CN 97103387 Pending CN1164658A (en) | 1996-03-28 | 1997-03-27 | Display element, display-element lens, and surface panel for display device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97103387 Pending CN1164658A (en) | 1996-03-28 | 1997-03-27 | Display element, display-element lens, and surface panel for display device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH09319316A (en) |
| CN (2) | CN1322354C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013915A (en) * | 1975-10-23 | 1977-03-22 | Bell Telephone Laboratories, Incorporated | Light emitting device mounting arrangement |
| US4414565A (en) * | 1979-10-16 | 1983-11-08 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Method and apparatus for producing three dimensional displays |
| CN85101770A (en) * | 1985-04-01 | 1987-03-04 | 菲利浦光灯制造公司 | Back projection screens |
-
1996
- 1996-10-30 JP JP28807996A patent/JPH09319316A/en not_active Withdrawn
-
1997
- 1997-03-27 CN CNB200410005830XA patent/CN1322354C/en not_active Expired - Fee Related
- 1997-03-27 CN CN 97103387 patent/CN1164658A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013915A (en) * | 1975-10-23 | 1977-03-22 | Bell Telephone Laboratories, Incorporated | Light emitting device mounting arrangement |
| US4414565A (en) * | 1979-10-16 | 1983-11-08 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Method and apparatus for producing three dimensional displays |
| CN85101770A (en) * | 1985-04-01 | 1987-03-04 | 菲利浦光灯制造公司 | Back projection screens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1164658A (en) | 1997-11-12 |
| CN1619353A (en) | 2005-05-25 |
| JPH09319316A (en) | 1997-12-12 |
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Granted publication date: 20070620 Termination date: 20140327 |