CN1123945A - Super large-size color fluorescent screen display - Google Patents
Super large-size color fluorescent screen display Download PDFInfo
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- CN1123945A CN1123945A CN 94118452 CN94118452A CN1123945A CN 1123945 A CN1123945 A CN 1123945A CN 94118452 CN94118452 CN 94118452 CN 94118452 A CN94118452 A CN 94118452A CN 1123945 A CN1123945 A CN 1123945A
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- light
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- fluorescent
- lamp
- snakelike
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Abstract
The very-large-screen full-colour display with high brightness, high efficiency and long service life is composed of red, blue and green snakelike cold-cathode fluorescence lamps installed on substrate plates. Several picture elements and their drivers constitute an assembly and a number of such assemblies are spliced into a large-screen or very-large-screen display. Each fluorescence lamp has reflecting layer close to the substrate plate to increase brightness and each picture element is surrounded by shielding device to promote contrast.
Description
The invention belongs to the full color super large screen displaying, particularly a kind of high brightness, high-level efficiency, long-life cold-cathode fluorescence lamp full color display.
The screen size of super large screen displaying is usually at tens inches to several thousand inches or bigger.Because aspects such as manufacturing process, installation, Transport Machinery are all formed by several less display unit splicing-ins usually, claim the mosaic super large screen displaying.
The mosaic super large screen displaying of prior art mainly contains following several at present:
1. high-voltage cathodes ray display is as the cathode ray tube (CRT) display of flat structures such as Jumbotron.This type of display brightness can be up to 4000cd/m
2, can be used for indoor and outdoor, colored good, efficient is also higher, but displays complex, the cost height, the life-span is shorter.
2. light emitting diode (LED) display.This class display face mean flow rate can reach 1300cd/m
2About, be applicable to that indoor or outdoors uses evening.Green, blue LED mission life under high brightness conditions falls short of, and for super large screen displaying, needs a large amount of LED, and contact is many, the cost height, and colour can't meet color television standard.
The present invention has overcome above-mentioned shortcoming, and a kind of high brightness, high-level efficiency, colored good, full color super large screen displaying that the life-span is long are provided, and its brightness can be up to 4000cd/m
2More than, be applicable to the various occasions of indoor and outdoor.Efficient is up to more than the 501m/w, and is all more much higher than the various displays of present prior art.Its colour can accord with and color television standard fully, and its life-span is at 4000cd/m
2Under the above high brightness service condition, still can be used for display color television image and character and graphic etc. greater than 10000 hours.
Mosaic super large screen displaying of the present invention is formed by several display module splicing-ins, and each display module comprises:
A snakelike cold-cathode fluorescence lamp array, a snakelike fluorescent light is an image point, or constitutes a pixel by one group of snakelike fluorescent light of red, blue, green three primary colours;
A series of fluorescent lamp drive circuits;
A substrate is used for supporting and installing fluorescent lamp array and driving circuit thereof;
A shade is used to reduce the environment reflection of light, intensifys.
Each snakelike fluorescent light is by vision signal scanning and modulation, to show full-color TV image and character and graphic etc.
Describe the embodiment of full color super large screen displaying of the present invention in detail below in conjunction with accompanying drawing.Wherein:
Fig. 1 is the structural representation of display of the present invention.
Fig. 2 is the sectional view of fluorescent tube.
Fig. 3 is the arrangement mode synoptic diagram of several fluorescent lights.
Fig. 4 is the diagrammatic cross-section of plane fluorescent lamp.
Fig. 5 is the driving circuit synoptic diagram of display of the present invention.
Fig. 6 is the another kind of driving method synoptic diagram of display of the present invention.
Fig. 1 is the structural representation of display of the present invention.Wherein (a) is front elevation, (b) is side view.
101 is a pixel among Fig. 1 (a), and it is made up of three snakelike red, blue, green cold-cathode fluorescence lamps 102.
Fig. 1 (b) is the sectional view of display, and wherein 102 is snakelike fluorescent light.103 is substrate, is used to install, fixedly fluorescent light and its driving circuit 104.105 is the electrode of fluorescent light, and promptly two of snakelike fluorescent light electrodes are bent backward, pass substrate 103, and link to each other with driving circuit 104.106 is light barrier, be positioned at each pixel around, be used to stop and the surround lighting of incident improve visual contrast.Each surface 107,108 and 109 of light barrier 106 is the black light-absorbing layer, be used to absorb the incident surround lighting, but the also available high reflecting material in the downward surface 109 of light barrier is used for and will upwards launches the light reflection forwards, shown among Fig. 1 (b) 110, to improve the display panel mean flow rate.
In order to improve brightness and contrast, fluorescent light on the outside surface of the one side of substrate, can plate high reflection layer, as shown in Figure 2,201 is snakelike cold cloudy fluorescent light among the figure, and 202 is the fluorescent tube of fluorescent light, 203 is its luminescent powder, 204 is the black light-absorbing substrate, and 205 is the reflection horizon, is used for the light of retroeflection is reflected forwards, shown among Fig. 2 206, to improve brightness.207 is the black light-absorbing layer, is positioned at the outside surface in reflection horizon 205, is used to absorb the incident surround lighting, improves the displayed image contrast.
Because fluorescent light is a gas-discharge lamp, produce ultraviolet ray by gas discharge, ultraviolet ray excites the luminescent powder on the tube wall to produce visible light again, because gas discharge not only produces ultraviolet ray, also produce simultaneously some visible lights, that these visible lights can reduce that luminescent powder sends is red, blue, the excitation of green glow.In order to eliminate these gas discharge bias lights, the glass-tube of not homochromy lamp, the transparent glass-tube of available different colours, as red colored lamp with red transparent glass-tube, green light, blue lamp with green, blue pipe, to absorb the bias light of gas discharge, improve excitation respectively, this coloured glass-tube also can absorb the incident surround lighting simultaneously, to intensify.
For achieving the above object, also can adopt outside fluorescent tube, to be coated with method red, blue, green filter coating, equally also can improve excitation and contrast.
The arrangement mode of snakelike fluorescent light can be used other form among Fig. 1, and Fig. 3 is several examples wherein, and wherein 301 is the discrete row's of tri coloured lantern form, and 302 is the isometric U-shaped lamp of tri coloured lantern, and 303 is circular form, or other form.
Above-mentioned used snakelike fluorescent light all is to form with the round lamp tube bending, and for simplifying technology, the also available plate snakelike fluorescent light of snakelike fluorescent light promptly forms by a corrugated shape plate and a flat glass plate are folded mutually, as shown in Figure 4.Wherein 401 is a watt rib backboard, and 402 is flat glass plate, and it is luminescent powder that the two superimposed sealing forms a series of discharge spaces 403,404, and 405 is the reflection horizon, is used to improve brightness.
Fig. 5 is the driving method synoptic diagram of display system.Wherein 501 is red, blue, green snakelike cold-cathode fluorescence lamp, and 502 is the driver of fluorescent light, DC/AC inverter for example, and it can convert low-voltage dc voltage to High AC voltage, with excitation fluorescent lamp.
X among Fig. 5
1, X
2... be line scanning, Y
1, Y
2... be input luminance signal, brightness can be used the width modulation method, promptly comes modulated luminance with the different time spans of lighting a lamp, thereby obtains full color and the displayed image that good gray scale is arranged.
Fig. 6 is the another kind of driving method of display of the present invention.(a) is circuit diagram among Fig. 6, (b) is its oscillogram.Wherein 601 is the cold-cathode fluorescence lamp array, and 602 is DC/AC inverter, and 603 is electric capacity, x
1, x
2... be the line scanning end, when the transducer of delegation wherein, [the t among Fig. 6 (b) when for example x1 is scanned gating
On)], continuous alternating voltage of the output terminal of transducer output [among Fig. 6 604 of (b)], its amplitude is the maintenance operating voltage of fluorescent light, cuts off up to the transducer input terminal voltage, alternating voltage is output as the zero [t among Fig. 6 (b)
Off].Because the maintenance operating voltage of fluorescent light is more much lower than ignition voltage, therefore, when having only sustaining voltage on the fluorescent light, fluorescent light does not work.When one of y direction (being the luminance signal input end) input with in a flash the anti-phase luminance signal 605 of maintenance operating voltage, the voltage summation that makes lamp two ends at this moment is above ignition voltage, then fluorescent light is lighted, up to t
OffIn time, keep till the operating voltage disappearance, as 606 among Fig. 6 (b).Light a lamp the time t among Fig. 6 (b)
M1(=t
Off-t
Onl) length, be decided by that the pulse of y directional data comes late or early, i.e. t
mLength be decided by the size of luminance signal, as t among Fig. 6 (b)
M2Compare t
M1Little, their corresponding fluorescent lamp lighting time is also different.Thereby obtain different brightness, be different gray scales and not homochromy demonstration.
Super large screen displaying of the present invention has following advantage:
1. display of the present invention has very high image brightness, and can appoint in very wide scope Meaning is regulated. Can be applicable to outdoor and indoor various occasions.
2. display of the present invention has the luminous efficiency of incandescent.
3. display of the present invention has the very long life-span.
4. display of the present invention can show the colour TV image that meets color television standard.
5. display of the present invention also can be used for big ocra font ocr and shows that then brightness is comparable at present commonly used The incandescent lamp bulb height, and luminous efficiency will be higher more than 5 times than incandescent lamp, power consumption is less than incandescent lamp 20%, the life-span is long more than 10 times, the reliability ratio incandescent lamp is much higher. Particularly show different During look, it is not homochromy that incandescent lamp leans on different filter glasses or color filter to obtain, and luminance and efficiency more Low, and the luminous different luminescent material that is decided by of the present invention, so its brightness, efficient are more More much higher than colored incandescent lamp.
Claims (15)
1. a high brightness, high-level efficiency, long-life super large screen displaying, it is spliced by several display modules, and each display module comprises:
A snakelike cold-cathode fluorescence lamp array, each snakelike fluorescent light are an image point;
The driving circuit of a series of fluorescent lights;
A substrate is used for supporting to install fluorescent lamp array and driving circuit thereof;
A shade is used to reduce the environment reflection of light, intensifys.
Said snakelike cold-cathode fluorescence lamp is driven by driving circuit, and is luminous by the requirement of display system, with character display, figure with the image of gray scale is arranged.
2. one kind as claim 1 said display, it is characterized in that said snake type fluorescent light is made up of red, blue, green three-color fluorescent lamp, each group is red, blue, the green fluorescence lamp constitutes a pixel, and the versicolor fluorescent light in each group drives respectively, with color image display and number symbol, figure.
3. one kind as claim 2 said displays, it is characterized in that red, blue, the green snakelike fluorescent light of said each group is each one of each pixel.
4. one kind as claim 3 said displays, it is characterized in that said red, blue, green snakelike fluorescent light space arranges, to improve the colour mixture effect.
5. one kind as claim 2 said displays, it is characterized in that said glass tube red, blue, green snakelike fluorescent light is respectively the glass tube of transparent red, orchid, green, to eliminate fluorescent tube gas discharge and luminous parasitic light, improve excitation, weaken the environment reflection of light simultaneously, improve the display contrast.
6. one kind as claim 2 said displays, it is characterized in that on the outside surface of said red, blue, green snakelike fluorescent tube transparent red, blue, green optical filter film being arranged respectively, to eliminate fluorescent tube gas discharge and luminous parasitic light with the raising excitation, weaken the environment reflection of light simultaneously, to improve the display contrast.
7. one kind as claim 1 said display, it is characterized in that said snakelike cold-cathode fluorescence lamp is the lamp of three red, blue, green discrete lamps or three isometric " U " shape lamps or garden shape lamp or other shape.
8. one kind as claim 1 said display, it is characterized in that said snakelike cold-cathode fluorescence lamp is a fluorescent light plate, snakelike discharge channel.
9. one kind as claim 1 said display, it is characterized in that said real estate has high reflection layer to the one side of fluorescent light, with fluorescent light backward and forward to the light reflection of side-emitted, and to improve brightness.
10. one kind as claim 1 said display, it is characterized in that said fluorescent tube, on the outside surface of substrate highly reflecting films is arranged, as aluminium film or silverskin, with fluorescent light backward and forward to the light reflection of side-emitted, to improve brightness.
11. one kind as claim 1 said display, it is characterized in that the outside surface and the light-baffling device of said substrate, is the black light-absorbing material, to intensify.
12. one kind as claim 1 said display, it is characterized in that said light-baffling device, towards a following adularescent high reflection layer, the reflection of the light of upwards emission forwards, to improve mean flow rate.
13. one kind as claim 1 said display, it is characterized in that said driving circuit is made up of a series of AC/DC power packs, this transducer converts low-voltage dc voltage to High AC voltage, to drive cold-cathode fluorescence lamp.The turn-on time of control low-voltage dc voltage,, thereby obtain different brightness, the demonstration of promptly different gray scales and colour TV with the fluorescent lifetime of control fluorescent light.
14. one kind as claim 12 said displays, it is characterized in that said DC/AC inverter is one of a several fluorescent-lamp-use, scanning work is with simplified driving circuit.
15. one kind as claim 1 said display, it is characterized in that said driving circuit is driven by line scanning and row to form.DC/AC inverter of every capable fluorescent-lamp-use, its output AC voltage are the maintenance operating voltage of fluorescent light.When column direction (luminance signal input) adds with said alternating voltage anti-phasely, and fluorescent light two end total voltages are when surpassing ignition voltage, and fluorescent light is lighted, when line-sweep voltage cuts off till.Luminance signal is come and the time span of line-sweep voltage between cutting off is the time span of fluorescent lamp lighting, and this time length is decided by the luminance signal size, thereby obtains different brightness, promptly different gray scales and not homochromy demonstration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118452 CN1108598C (en) | 1994-11-29 | 1994-11-29 | Super large-size color fluorescent screen display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118452 CN1108598C (en) | 1994-11-29 | 1994-11-29 | Super large-size color fluorescent screen display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1123945A true CN1123945A (en) | 1996-06-05 |
| CN1108598C CN1108598C (en) | 2003-05-14 |
Family
ID=5038844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94118452 Expired - Fee Related CN1108598C (en) | 1994-11-29 | 1994-11-29 | Super large-size color fluorescent screen display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108598C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6201352B1 (en) | 1995-09-22 | 2001-03-13 | Gl Displays, Inc. | Cold cathode fluorescent display |
| US6211612B1 (en) | 1995-09-22 | 2001-04-03 | Gl Displays, Inc. | Cold cathode fluorescent display |
| US6310436B1 (en) | 1995-09-22 | 2001-10-30 | Gl Displays, Inc. | Cold cathode fluorescent lamp and display |
| US6316872B1 (en) | 1995-09-22 | 2001-11-13 | Gl Displays, Inc. | Cold cathode fluorescent lamp |
| US6515433B1 (en) | 1999-09-11 | 2003-02-04 | Coollite International Holding Limited | Gas discharge fluorescent device |
-
1994
- 1994-11-29 CN CN 94118452 patent/CN1108598C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6201352B1 (en) | 1995-09-22 | 2001-03-13 | Gl Displays, Inc. | Cold cathode fluorescent display |
| US6211612B1 (en) | 1995-09-22 | 2001-04-03 | Gl Displays, Inc. | Cold cathode fluorescent display |
| US6310436B1 (en) | 1995-09-22 | 2001-10-30 | Gl Displays, Inc. | Cold cathode fluorescent lamp and display |
| US6316872B1 (en) | 1995-09-22 | 2001-11-13 | Gl Displays, Inc. | Cold cathode fluorescent lamp |
| US6452326B1 (en) | 1995-09-22 | 2002-09-17 | Gl Displays, Inc. | Cold cathode fluorescent lamp and display |
| US7474044B2 (en) | 1995-09-22 | 2009-01-06 | Transmarine Enterprises Limited | Cold cathode fluorescent display |
| US7919915B2 (en) | 1995-09-22 | 2011-04-05 | Transmarine Enterprises Limited | Cold cathode fluorescent display |
| US6515433B1 (en) | 1999-09-11 | 2003-02-04 | Coollite International Holding Limited | Gas discharge fluorescent device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1108598C (en) | 2003-05-14 |
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