CN1858633A - Display and back light module - Google Patents
Display and back light module Download PDFInfo
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- CN1858633A CN1858633A CN 200510034504 CN200510034504A CN1858633A CN 1858633 A CN1858633 A CN 1858633A CN 200510034504 CN200510034504 CN 200510034504 CN 200510034504 A CN200510034504 A CN 200510034504A CN 1858633 A CN1858633 A CN 1858633A
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- display
- supply apparatus
- light
- light supply
- photocatalyst layer
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Abstract
A display includes a light source device, in which, a light-touch medium layer is distributed on the surface of said light source device and composed of TiO2 particles to sterilize and remove dust radiated by the light source device.
Description
[technical field]
The present invention relates to a kind of flat-panel screens and module backlight.
[background technology]
The light source of module backlight that LCD is used, (Cold CathodeFluorescent Lamp CCFL), belongs to low-pressure mercury discharge lamp mostly to be cold-cathode fluorescence lamp greatly.The light that light source sends appears through the light guide plate transmission of module backlight and from light guide plate, and the rayed that appears is to liquid crystal layer, and liquid crystal layer is issued to the purpose of development in the irradiation of light.Cold-cathode fluorescence lamp is to be coated with layer of fluorescent powder on the glass tube inwall, and at inner small amounts of inert gas and the mercury enclosed of glass tube, is produced ultraviolet ray by electron bombardment in the mercury discharge, and this ultraviolet ray shines fluorescent powder and is converted to visible light.Because cold cathode fluorescent lamp is not used filament, therefore there is not the filament blow problem, therefore arranged serviceable life very reliably.
Display in use for some time, dust, greasy dirt, bacterium etc. can be adhered in the light source surface, these dusts, greasy dirt will influence the luminous energy of light source irradiation to light guide plate, and then influence the glorious degrees of module backlight, the uniformity coefficient of briliancy, need take display apart if will remove these impurity, use wipings such as dirt-removing paper or dirt removing cloth, but this kind method not only the process complexity, in wiping process, stay sordid vestige, and may damage module backlight.
[summary of the invention]
Below, will a kind of display with self-cleaning function be described with embodiment, and, a kind of module backlight of tool self-cleaning function.
For realizing that the foregoing description content provides a kind of display, this display comprises a light supply apparatus, and the surface distributed of described light supply apparatus has photocatalyst layer, and this photocatalyst layer contains titanium dioxide fine particles.
For realizing that the foregoing description content also provides a kind of module backlight, this module backlight comprises a light supply apparatus, and wherein, the surface distributed of light supply apparatus has photocatalyst layer, and this photocatalyst layer contains titanium dioxide fine particles.
The display that present embodiment provided mainly uses surface-coated that the light supply apparatus of photocatalyst layer is arranged, utilize photocatalyst material under light supply apparatus irradiation with water and oxygen reaction, and have a performance of decomposing greasy dirt, kill bacteria, purifying air, reach the function of cleaning, sterilization, decontamination by this, need not take the purpose that display can reach cleaning apart.
The module backlight that present embodiment provided, its light supply apparatus surface distributed has photocatalyst layer, utilizes photocatalyst material under rayed and the decomposition greasy dirt that has, kill bacteria, the performance that purifies air, reaches the purpose of self-cleaning.
[description of drawings]
Fig. 1 is a display synoptic diagram of the present invention.
Fig. 2 is another embodiment synoptic diagram of the present invention's module backlight.
Vertical synoptic diagram of light supply apparatus when Fig. 3 is to use state.
[embodiment]
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, display 1 comprises a liquid crystal board 16, one module 10 backlight, and this liquid crystal board 16, module backlight 10 are fixed in the framework (figure does not show).Wherein, module 10 backlight comprises a light guide plate 14, some light supply apparatuses 12 and a light source cover 11, and the diffusion sheet 15, the blast sheet 17 that are arranged on these light guide plate 14 tops.
Wherein, the light supply apparatus 12 of module 10 backlight is arranged at light guide plate 14 belows, is called the straight-down negative structure.Because straight-down negative structure module 10 employed light supply apparatus 12 quantity backlight generally more than two, make display 1 power consumption that uses this module 10 backlight increase, it generally is applied on the display of LCD monitor, LCD TV.Light supply apparatus 12 under the cooperation of light source cover 11 with light transmission to light guide plate 14, light appears under the guiding of light guide plate 14 and exposes to diffusion sheet 15.
The optics diffusion effect takes place when the diffusion sheet 15 in light, and is relatively poor from the beam-pointing that diffusion sheet 15 appears, and the irradiate light that after this light is revised through blast sheet 17, be evenly distributed, brightness is high is to liquid crystal board 16.Because liquid crystal board 16 do not have autoluminescence character, must under the irradiation of light, just can reach the purpose of video picture, the rayed that appears from blast sheet 17 is to liquid crystal board 16, and liquid crystal board 16 is issued to the purpose of video picture in the irradiation of this light.
In addition, as shown in Figure 2, the light supply apparatus 12 ' of module 10 ' backlight also can be positioned at a side of light guide plate 14 ', this kind structure is called side-light type, and the quantity of light supply apparatus 12 ' is generally one, and it generally is applied on the display of small-sized electronic products such as the mobile computer frivolous, that power consumption is low, PDA.
Wherein, light supply apparatus 12 (12 ') can be cold-cathode fluorescence lamp (CCFL), light emitting diode (LED), halogen tungsten lamp, electroluminescence (ELD), emission of cathode lamp (CCL) and metal-halide lamp etc., wherein technical maturity, stable performance, and on flat-panel screens, generally use be cold-cathode fluorescence lamp.
Present embodiment is that the below that cold-cathode fluorescence lamp, light supply apparatus 12 are positioned at light guide plate 14 is that example is described in detail with light supply apparatus 12.
See also shown in Figure 3ly, light supply apparatus 12 comprises a glass tube 120, and scribbling on glass tube 120 inwalls to enclose in a fluorescence coating 124, the glass tube 120 has inert gas and mercury (figure does not show), scribbles a self-cleaning layer 122 on the outer wall of glass tube 120.This self-cleaning layer 122 mainly is made up of photocatalyst particulate 1220, and wherein the photocatalyst particulate is mainly TiO
2Particulate also can add other photocatalyst material particulate, as ZnO
xDeng.
The optimum thickness of this self-cleaning layer 122 is the 20-500 nanometer, and the granule size of this photocatalyst particulate 1220 is preferably the 15-50 nanometer.This self-cleaning layer 122 can adopt methods such as sputter, injection or coating to make photocatalyst particulate 1220 be uniformly distributed on the outer wall of glass tube 120.
In addition, according to actual needs, this self-cleaning layer 122 can be coated on the screen of display 1, self-cleaning layer 122 has effects such as sterilization, dedusting, degreasing equally under the irradiation of light that screen produces.
To explain the principle of work of self-cleaning layer 122 below.
After light supply apparatus 12 is lighted, produced ultraviolet ray by electron bombardment in the mercury discharge, this ultraviolet ray shines self-cleaning layer 122, and this self-cleaning layer 122 produces electric hole (h under ultraviolet irradiation
+) and electronics (e
-).The electric hole that is distributed in self-cleaning layer 122 surface has the very strong electronic capability that gets, and can will be adsorbed on TiO
2The OH on surface
-And H
2The O molecular oxygen changes into hydroxyl free radical (OH
-).The oxidability of hydroxyl free radical is the strongest in the oxygenant that exists in the water body, and energy non-selectivity ground oxidation most organic pollutants and part inorganic pollutant finally are decomposed into H with it
2O, CO
2Deng innoxious substances such as organic molecule and corresponding inorganic ions.This decomposition has self-cleaning action, sterilization effectively, deodorizing, dust removal.On the other hand, the OH of reaction generation
-With H
+Can destroy and disperse the formation of water droplet, make light supply apparatus 12 surfaces be difficult for forming water droplet, the contact angle of water reduces, and water droplet can soak into fully on self-cleaning layer 122 surface, thereby makes light supply apparatus 12 have Superhydrophilic, and bacterium, dirt etc. are cleaning easily.
The display 1 that uses module 10 backlight also can be by the performance of self-cleaning layer 122 under irradiate light, removes the bacterium, dust, greasy dirt of display 1 inside etc.
In addition, display 1 drives air by its internal heat dissipating fan (figure does not show) and produces convection current, dirts such as the bacterium in display 1 surrounding air, greasy dirt, dust can be brought in the display 1, the self-cleaning layer 122 on these dirts and light supply apparatus 12 surfaces reacts, and can reach the purpose that purifies extraneous air.
In addition, those skilled in the art should understand that display 1 provided by the invention also can be the display of other shape and structure, as electronic calculator, mobile computer, desktop PC display screen, PDA etc., should not exceed with embodiment.
Claims (10)
1. a display comprises a light supply apparatus, it is characterized in that: the surface distributed of described light supply apparatus has photocatalyst layer.
2. display as claimed in claim 1 is characterized in that: described photocatalyst layer contains titanium dioxide fine particles.
3. display as claimed in claim 2 is characterized in that: described photocatalyst layer further contains zinc paste (ZnO
x) particulate.
4. display as claimed in claim 2 is characterized in that: the granularity of described titanium dioxide fine particles is the 15-50 nanometer.
5. display as claimed in claim 3 is characterized in that: the granularity of described zinc oxide fine particles is the 15-50 nanometer.
6. as the arbitrary described display of claim 1 to 5, it is characterized in that: the thickness of described photocatalyst layer is the 20-500 nanometer.
7. display as claimed in claim 1 is characterized in that: further be distributed with photocatalyst layer on the described indicator screen.
8. a module backlight comprises a light supply apparatus, it is characterized in that: the surface distributed of described light supply apparatus has photocatalyst layer.
9. module backlight as claimed in claim 8 is characterized in that: described photocatalyst layer contains titanium dioxide fine particles.
10. module backlight as claimed in claim 9 is characterized in that: described photocatalyst layer further contains zinc oxide fine particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034504 CN1858633A (en) | 2005-04-29 | 2005-04-29 | Display and back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034504 CN1858633A (en) | 2005-04-29 | 2005-04-29 | Display and back light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1858633A true CN1858633A (en) | 2006-11-08 |
Family
ID=37297551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510034504 Pending CN1858633A (en) | 2005-04-29 | 2005-04-29 | Display and back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1858633A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017161714A1 (en) * | 2016-03-22 | 2017-09-28 | 京东方科技集团股份有限公司 | Quantum dot film and display device |
| US10192899B2 (en) | 2016-02-04 | 2019-01-29 | Au Optronics Corporation | Display and manufacture method thereof |
| CN113617617A (en) * | 2021-07-09 | 2021-11-09 | 华和互惠(青岛)贸易有限公司 | Processing technology of CCFL (cold cathode fluorescent lamp) photocatalyst silver ion germicidal lamp |
-
2005
- 2005-04-29 CN CN 200510034504 patent/CN1858633A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10192899B2 (en) | 2016-02-04 | 2019-01-29 | Au Optronics Corporation | Display and manufacture method thereof |
| WO2017161714A1 (en) * | 2016-03-22 | 2017-09-28 | 京东方科技集团股份有限公司 | Quantum dot film and display device |
| US10203527B2 (en) | 2016-03-22 | 2019-02-12 | Boe Technology Group Co., Ltd. | Quantum dot film and display device |
| CN113617617A (en) * | 2021-07-09 | 2021-11-09 | 华和互惠(青岛)贸易有限公司 | Processing technology of CCFL (cold cathode fluorescent lamp) photocatalyst silver ion germicidal lamp |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |