CN101170018A

CN101170018A - Light guide structure and keyboard with this light guide structure

Info

Publication number: CN101170018A
Application number: CNA2006101499915A
Authority: CN
Inventors: 陈科儒
Original assignee: Yijia Science & Technology Co Ltd
Current assignee: Yijia Science & Technology Co Ltd; Ichia Technologies Inc
Priority date: 2006-10-25
Filing date: 2006-10-25
Publication date: 2008-04-30
Anticipated expiration: 2026-10-25
Also published as: CN100576393C

Abstract

A light guide structure is arranged inside a keyboard and includes a light guide plate and a plurality of lighting components. The light guide plate has a plurality of light guide areas, which are provided with a central light guide circle. And the central light guide circle extends outwards with a plurality of light guide rings. The light guide area and the adjacent light guide area have at least one light guide ring in intersected connection. In addition, the central light guide circle and the plurality of light guide rings are provided with a plurality of arc light guide particles respectively. The light guide plate is arranged with the lighting components therebelow. And the light components correspond with the central point position of the central light guide circle. When the lighting components are lightened up, the light ray will project to the light guide plate from down to up and is refracted by the light guide particles on the light guide plate to corresponding keys, which will have light transmission display effect with figures or graphs on the key surface.

Description

Light guide structure and have the keyboard of this light guide structure

Technical field

The present invention relates to a kind of light guide structure, particularly a kind of light guide structure with spotlight effect.

Background technology

Related electronic devices such as for example portable mobile phone of many small-sized electronic products, personal digital aid (PDA) and satellite navigation system have become electronic product indispensable in the daily life now.All have small-sized keyboard structure in these electronic products, this keyboard structure makes the user can import data, or carries out the various functions of this electronic product.

In the keyboard structure of these electronic installations, all be concealed with backlight, under the situation of no light source irradiation, this backlight provides the keyboard back light effect, and the light of backlight can be penetrated out by the surface of button, manifesting numeral or the pattern on the keytop, during button on user's operation keyboard, can not push the wrong the situation of button.

Many in recent years keyboard structures are disposed at two light-emitting diodes 20 that backlight used the side (as shown in figure 10) of light guide plate 10 one after another in order to make the integral thickness attenuation.When light-emitting diode 20 is lighted, this light is imported by light guide plate 10 sides, make whole light guide plate 10 evenly shinny, again by light guide plate 10 with ray cast each button in keyboard, when light passes keytop, the numeral of keytop or figure can show, so that user's executable operations.

Be directed into opposite side because above-mentioned light is the side from light guide plate 10, so the brightness meeting of light decays gradually, make the pairing keytop of opposite side of light guide plate 10 produce the phenomenon of translucent effect deficiency, cause shown numeral and figure luminance shortage.Therefore, in order to promote brightness, then select the high light-emitting diode (for example 20mA) of single milliampere (mA) number for use, to promote the light-source brightness on the light guide plate 10.Thus, total amperage of light-emitting diode is 40mA, will cause the power consumption of electronic installation to increase, and the increase of cost.

Summary of the invention

At problems of the prior art, the invention provides a kind of light guide plate with spotlight effect, it can use milliampere low luminescence component of (mA) number, the light-emitting diode of 4 5mA for example, and luminescence component is disposed at the light guide plate below, to promote the backlight effect, to reduce power consumption and workout cost problem.

To achieve these goals, the invention provides a kind of light guide structure, comprising:

Light guide plate, have a plurality of light guide zone on it, described light guide zone has center leaded light circle, and center leaded light circle periphery has the first leaded light ring, the periphery of the first leaded light ring has the second leaded light ring, and each light guide zone and adjacent light guide zone have at least a leaded light ring to be to occur simultaneously and be connected; In addition, on center leaded light circle and the first leaded light ring and the second leaded light ring, respectively have a plurality of arc leaded light particles; And

Luminescence component, it is disposed at the light guide plate below, and the center position of corresponding center leaded light circle.

With ray cast during in light guide plate, this light refracts on the button of opposite position through leaded light particle, makes keytop have translucent effect, to demonstrate numeral or figure at luminescence component.

Description of drawings

Fig. 1 is first kind of light guide structure schematic diagram of the present invention;

Fig. 2 is the front elevational schematic of Fig. 1;

Fig. 3 is second kind of light guide structure schematic diagram of the present invention;

Fig. 4 is the side cross-sectional schematic of Fig. 3;

Fig. 5 is light guide structure of the present invention and the corresponding schematic diagram of button group;

Fig. 6 is the third light guide structure schematic diagram of the present invention;

Fig. 7 is first kind of derived structure generalized section of the present invention;

Fig. 8 is second kind of derived structure generalized section of the present invention;

Fig. 9 is the schematic diagram of another preferred embodiment of the present invention;

Figure 10 is the schematic diagram of traditional light guide structure.

In the accompanying drawing, the list of parts of each label representative is as follows:

Prior art

Light guide plate 10 light-emitting diodes 20

The present invention

Light guide plate

1,1a light guide zone 11

Leaded light block 11a center position 111

Center leaded light circle 12 first leaded light rings 13

The second leaded light ring, 14 leaded

light particles

15,12a

The 3rd leaded light ring 16 the 4th leaded light ring 17

18

luminescence components

2,2a bore a hole

Film circuit board 3 plastic films 31

Circuit-line 32 button groups 4,3a

Button

41,31a first elastic layer 5

Sheet metal 51 holes 52

Second elastic layer, 6 rubber bodies 61

Duroplasts film 62

convex bodys

611,91

Adhesion layer 7 button groups 8

Button 81 perforation 18

Second elastic layer 9

Embodiment

About the technology contents and the detailed description of invention, existing accompanying drawings is as follows:

Fig. 1 and Fig. 2 are respectively the front elevational schematic of first kind of light guide structure schematic diagram of the present invention and Fig. 1.As shown in the figure, light guide structure of the present invention comprises: light guide plate 1 and a plurality of luminescence component 2.The light that is produced by luminescence component 2 is projection upwards, again by a plurality of leaded light particles 15 on the light guide plate 1 with light-ray condensing reflect on the button (not shown).In this figure, luminescence component is 4.

Have a plurality of light guide zone 11 on the light guide plate 1, light guide zone 11 has center leaded light circle 12, center leaded light circle 12 peripheries have the first leaded light ring 13, and the periphery of the first leaded light ring 13 has the second leaded light ring 14, and each light guide zone 11 has at least a leaded light ring to be common factor with adjacent light guide zone 11 to be connected.In addition, respectively have a plurality of arc leaded light particles 15 on center leaded light the circle 12 and first leaded light ring 13 and the second leaded light ring 14, the diameter of leaded light particle 15 is between 0.01～0.1 millimeter.Therefore leaded light circle 12 in center is with sparse mode distribute (is 1 point/square millimeter as distribution density), and the first leaded light ring 13 distributes (is 10 point/square millimeters as distribution density) in uniform mode, and the 3rd leaded light ring 14 is with mode closely distribute (is 20 point/square millimeters as distribution density).Because light is when a side of light guide plate is directed into opposite side, the brightness meeting of this light decays gradually, so leaded light particle 15 is sparse more in the distribution more nearby of distance light source, and intensive more apart from light source leaded light particle 15 distributions more at a distance.

Luminescence component 2 is disposed at light guide plate 1 below, and the center position 111 of corresponding center leaded light circle 12.With ray cast during in light guide plate 1, this light refracts on the button (not shown) of opposite position through leaded light particle 15, makes the surface of button have translucent effect, to demonstrate numeral or figure at luminescence component 2.Luminescence component 2 is a light-emitting diode in this figure.

Fig. 3 and Fig. 4 are respectively the side cross-sectional schematic of second kind of light guide structure schematic diagram of the present invention and Fig. 3.As shown in the figure, light guide plate 1 is roughly the same with Fig. 1, difference is that a plurality of luminescence components 2 are packaged in film circuit board 3 inside, film circuit board 3 is made up of two soft plastic films 31, be printed with circuit-line 32 on the plastic film 31, the turn-on power of luminescence component 2 is by 32 transmission of the circuit-line on the plastic film 31, and perhaps film circuit board 3 can be used as button (not shown) executable operations, to press on film circuit board 3 when button is pressed, thereby make the operation signal conducting.

Fig. 5 is light guide structure of the present invention and the corresponding schematic diagram of button group.As shown in the figure, the light guide plate 1 and the 2 corresponding configurations of a plurality of luminescence component of button group 4 and light guide structure, each button 41 will be to there being the leaded light particle 15 of different distributions density, and for example 41 pairs of buttons should have leaded light particle 15 on center leaded light circle 12, the first leaded light ring 13 and the second leaded light ring 14 among this figure.Therefore, when luminescence component 2 is lighted, light promptly is projeced into the light guide zone 11 of light guide plate 1, this light is via the leaded light particle 15 on center leaded light circle 12, the first leaded light ring 13 and the second leaded light ring 14, refract light on the button 41 of opposite position, make button 41 surfaces have translucent effect, to demonstrate button 41 lip-deep numeral or figures.

Fig. 6 is the third light guide structure schematic diagram of the present invention.As shown in the figure, the luminescence component 2 of light guide structure is formed by two, and described two luminescence components 2 are the diagonally opposing corner configuration, and relatively, the light guide zone 11 on the light guide plate 1 is the diagonally opposing corner configuration.Light guide zone 11 has center leaded light circle 12, leaded light circle 12 peripheries, center have the first leaded light ring 13, the first leaded light ring, 13 peripheries have the second leaded light ring 14, the second leaded light ring, 14 peripheries have the 3rd leaded light ring 16, the 3rd leaded light ring 16 peripheries have the 4th leaded light ring 17, and aforesaid light guide zone 11 and the light guide zone 11 at oblique angle have at least a leaded light ring to be to occur simultaneously and be connected.

In addition, the distribution density of the leaded light particle 15 on center leaded light circle 12, the first leaded light ring 13, the second leaded light ring 14, the 3rd leaded light ring 16, the 4th leaded light ring 17 is, and is sparse more apart from the near more person's of light source distribution, and intensive more apart from light source person's far away more distribution.

Fig. 7 is a kind of derived structure generalized section of the present invention.As shown in the figure, the keyboard shown in this figure comprises:

Film circuit board 3, formed by two soft plastic films 31, be printed with circuit-line 32 on the plastic film 31, and two 31 of plastic films dispose a plurality of luminescence components 2, luminescence component 2 is electrically connected with circuit-line 31, and the turn-on power of luminescence component 2 transmits by the circuit-line on the plastic film 31 32, and when the button executable operations, pushing button presses behind film circuit board 3, the output of circuit-line 31 executable operations signals.In this figure, luminescence component 2 is identical with correspondence position and Fig. 1 to Fig. 4 of light guide plate 1, or identical with Fig. 6.

First elastic layer 5, made by transparent plastic, it is disposed at film circuit board 3 tops, have a plurality of sheet metals 51 on first elastic layer 5, after button 81 was pressed, sheet metal 51 produced the snap sound, allowed the feel effect of pressing keys 81 of user, sheet metal 51 distortion simultaneously press on film circuit board 3, make film circuit board 3 output function signals.

Light guide plate 1 is disposed on first elastic layer 5, and the structure of light guide plate 1 is identical with Fig. 1 to Fig. 4, or identical with Fig. 6, does not repeat them here the structure of light guide plate 1.

Second elastic layer 6 is disposed on the light guide plate 1, is made up of rubber bodies 61 and the duroplasts film 62 that is disposed at rubber bodies 61 surfaces on it, has convex body 611 in rubber bodies 61 bottoms, and convex body 611 is corresponding to sheet metal 51.

Adhesion layer 7 is disposed on second elastic layer 6.

Button group 8 is disposed on the adhesion layer 7, and is made up of a plurality of button 81, each button 81 corresponding each convex body 811.

When luminescence component 2 is lighted, light passes first elastic layer 5 from lower to upper and is projeced into light guide plate 1 bottom, this light passes second elastic layer 6 and mucigel 7 to the button 81 of opposite position via light guide plate 1 optically focused refraction, make button 81 surfaces produce the printing opacity display effect, to demonstrate the numeral or the figure on button 81 surfaces.

Fig. 8 is another derived structure generalized section of the present invention.Keyboard shown in this figure comprises:

Film circuit board 3, formed by two soft plastic films 31, be printed with circuit-line 32 on the plastic film 31, and two 31 of plastic films dispose a plurality of luminescence components 2, luminescence component 2 is electrically connected with circuit-line 31, and the turn-on power of luminescence component 2 transmits by the circuit-line on the plastic film 31 32, and when the button executable operations, pushing button presses behind film circuit board 3, the output of circuit-line 31 executable operations signals.In this figure, luminescence component 2 is identical with Fig. 1 to Fig. 4 with light guide plate 1 correspondence position, or identical with Fig. 6.

First elastic layer 5, made by transparent plastic, it is disposed at film circuit board 3 tops, have a plurality of holes 52 on first elastic layer 5, the another side in hole 52 disposes sheet metal 51, and after button 81 was pressed by external force, sheet metal 51 contacted conducting with the circuit board of electronic installation (not shown), simultaneously sheet metal 51 produces the snap sound, allows the feel effect of pressing keys of user.

Light guide plate 1 is disposed on first elastic layer 5, and the structure of light guide plate 1 is identical with Fig. 1 to Fig. 4, or identical with Fig. 6, does not repeat them here the structure of light guide plate 1; On light guide plate 1, have a plurality of perforation 18 in addition.

Button group 8 is disposed on the light guide plate 1, is made up of a plurality of buttons 81, and each button 81 internal configurations has by made second elastic layer, 9, the second elastic layers, 9 bottoms of transparent rubber material and has convex body 91, and convex body 91 correspondences are passed the perforation 18 in light guide plate 1.

When luminescence component 2 is lighted, light passes first elastic layer 5 from lower to upper and is projeced into light guide plate 1 bottom, this light passes second elastic layer 9 to the button 81 of opposite position via the refraction of light guide plate 1 optically focused, make button 81 surfaces produce the printing opacity display effect, to demonstrate the numeral or the figure on button 81 surfaces.

Fig. 9 is the schematic diagram of another preferred embodiment of the present invention.As shown in the figure, have a plurality of leaded light block 11a on the light guide plate 1a, have a plurality of arc leaded light particle 12a on each leaded light block 11a, the distribution density of leaded light particle 12a is between 1 point/square millimeter～20 point/square millimeters, similarly, the leaded light particle distributes sparse more more nearby apart from light source, and distributes close more more at a distance apart from light source.

Vertical place, light guide plate 1a below disposes a plurality of luminescence component 2a.When the button 31a with keyboard 3a is disposed on the light guide plate 1a, the corresponding leaded light block of button 31a 11a configuration.

When a plurality of luminescence component 2a are lighted, light will be projeced on the light guide plate 1a, and this light refracts on the button 31a of opposite position through leaded light particle 12a, makes the surface of button 31a have translucent effect, to demonstrate numeral or figure.

The above is the preferred embodiments of the present invention only, is not so promptly limits claim of the present invention, and every other equivalence of being done in characteristic range of the present invention changes or modifies, and all should be included in the claim of the present invention.

Claims

1. light guide structure that is disposed at keyboard, described light guide structure comprises:

Light guide plate has a plurality of light guide zone on it, described light guide zone has center leaded light circle, and described center leaded light circle periphery has at least one leaded light ring, and each light guide zone has at least a leaded light ring to be common factor with adjacent light guide zone to be connected; In addition, on described center leaded light circle and described leaded light ring, have a plurality of leaded light particles; And

A plurality of luminescence components, the center position configuration of its corresponding described center leaded light circle.

2. light guide structure as claimed in claim 1, wherein, described leaded light particle is an arc, the diameter of described leaded light particle is between 0.01～0.1 millimeter.

3. light guide structure as claimed in claim 1, wherein, the leaded light particle of described center leaded light circle distributes in sparse mode, and its distribution density is 1 point/square millimeter.

4. light guide structure as claimed in claim 1, wherein, mode distributes the leaded light particle of described leaded light ring evenly to reach closely in regular turn, and the distribution density that described even mode distributes is 10 point/square millimeters, and the distribution density that described tight mode distributes is 20 point/square millimeters.

5. light guide structure as claimed in claim 1, wherein, described luminescence component is a light-emitting diode.

6. light guide structure as claimed in claim 1, wherein, described luminescence component is packaged in the film circuit board, and described film circuit board is made up of two soft plastic films, be printed with circuit-line on the described plastic film, described luminescence component is electrically connected with described circuit-line.

7. keyboard with light guide structure comprises:

Film circuit board which is provided with circuit-line and luminescence component, and described luminescence component is electrically connected with circuit-line;

First elastic layer is disposed at described film circuit board top, has a plurality of sheet metals on described first elastic layer;

Light guide plate, be disposed on described first elastic layer, have a plurality of light guide zone on the described light guide plate, described light guide zone has center leaded light circle, described center leaded light circle periphery has at least one leaded light ring, and each light guide zone has at least a leaded light ring to be common factor with adjacent light guide zone to be connected; In addition, on described center leaded light circle (12) and described leaded light ring, have a plurality of leaded light particles;

Second elastic layer is disposed on the described light guide plate, is made up of rubber bodies and the duroplasts film that is disposed at the rubber bodies surface, and described rubber bodies bottom has convex body, and described convex body is corresponding to described sheet metal; And,

Button group is disposed on described second elastic layer, and is made up of a plurality of button, corresponding each convex body of each button.

8. the keyboard with light guide structure as claimed in claim 7, wherein, described film circuit board is made up of two soft plastic films.

9. the keyboard with light guide structure as claimed in claim 7, wherein, described luminescence component is a light-emitting diode.

10. the keyboard with light guide structure as claimed in claim 7, wherein, described first elastic layer is made by transparent plastic.

11. the keyboard with light guide structure as claimed in claim 7, wherein, described leaded light particle is an arc, and the diameter of described leaded light particle is between 0.01～0.1 millimeter.

12. the keyboard with light guide structure as claimed in claim 7, wherein, the leaded light distribution of particles density of described center leaded light circle distributes in sparse mode, and described distribution density is 1 point/square millimeter.

13. the keyboard with light guide structure as claimed in claim 7, wherein, mode distributes the leaded light distribution of particles density of described leaded light ring evenly to reach closely in regular turn, and described uniform mode is distributed as 10 point/square millimeters, and mode is distributed as 20 point/square millimeters closely.

14. the keyboard with light guide structure as claimed in claim 7 wherein, disposes adhesion layer between described the one or two elastic layer and button group.

15. the keyboard with light guide structure comprises:

First elastic layer is disposed at described film circuit board top, has a plurality of holes on described first elastic layer, and the another side in described hole disposes sheet metal;

Light guide plate, be disposed on described first elastic layer, have a plurality of light guide zone on the described light guide plate, described light guide zone has center leaded light circle, described center leaded light circle periphery has at least one leaded light ring, and each light guide zone has at least a leaded light ring to be common factor with adjacent light guide zone to be connected; In addition, on described center leaded light circle and described leaded light ring, have a plurality of leaded light particles, and have a plurality of perforation on the described light guide plate;

Button group is disposed on the described light guide plate, is made up of a plurality of buttons, and each button internal configurations has second elastic layer, and described second elastic layer bottom has convex body, and described convex body correspondence is passed the perforation in described light guide plate.

16. the keyboard with light guide structure as claimed in claim 15, wherein, described film circuit board is made up of two soft plastic films.

17. the keyboard with light guide structure as claimed in claim 15, wherein, described luminescence component is a light-emitting diode.

18. the keyboard with light guide structure as claimed in claim 15, wherein, described first elastic layer is made by transparent plastic.

19. the keyboard with light guide structure as claimed in claim 15, wherein, described leaded light particle is an arc, and the diameter of described leaded light particle is between 0.01～0.1 millimeter.

20. the keyboard with light guide structure as claimed in claim 15, wherein, the leaded light distribution of particles density of described center leaded light circle distributes in sparse mode, and described distribution density is 1 point/square millimeter.

21. the keyboard with light guide structure as claimed in claim 15, wherein, mode distributes the leaded light distribution of particles density of described leaded light ring evenly to reach closely in regular turn, and described uniform mode is distributed as 10 point/square millimeters, and mode is distributed as 20 point/square millimeters closely.

22. the keyboard with light guide structure as claimed in claim 15, wherein, described second elastic layer is made by the transparent rubber material.

23. a light guide structure that is disposed at keyboard, described light guide structure comprises:

Light guide plate has the leaded light block of a plurality of corresponding keyboards on it, have a plurality of leaded light particles on the described leaded light block; And

A plurality of luminescence components are positioned at described light guide plate below, and are vertical corresponding configuration with described light guide plate.

24. light guide structure as claimed in claim 23, wherein, the distribution density of described leaded light particle is to distribute sparse more more nearby apart from light source, and distribute close more more at a distance apart from light source, described leaded light particle is an arc, its diameter is between 0.01～0.1 millimeter, and distribution density is between 1 point/square millimeter～20 point/square millimeters.