CN100357811C - Backlight module - Google Patents
Backlight module Download PDFInfo
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- CN100357811C CN100357811C CNB031565123A CN03156512A CN100357811C CN 100357811 C CN100357811 C CN 100357811C CN B031565123 A CNB031565123 A CN B031565123A CN 03156512 A CN03156512 A CN 03156512A CN 100357811 C CN100357811 C CN 100357811C
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- transparent
- plate
- light source
- diffuser plate
- backlight module
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Abstract
The invention relates to a backlight module, which comprises a frame, a reflector plate, at least one light source, a transparent cave-shaped plate, a diffusion plate and a plurality of optical films. The reflector plate is arranged at the bottom of the frame, and the light source is arranged in the frame and positioned above the reflector plate. In addition, the transparent cave-shaped plate is arranged on the frame and above the light source, and the diffusion plate is arranged on the transparent cave-shaped plate, wherein a gap is formed between the diffusion plate and the transparent cave-shaped plate. In addition, the plurality of optical films are arranged on the diffusion plate. The transparent cave-shaped plate is arranged in the backlight module, so that the problem that the heat energy of the conventional light source is transferred to the display liquid crystal panel can be solved.
Description
Technical field
The present invention relates to the module backlight in a kind of display, particularly relate to a kind of module backlight (Back Light Module) that can avoid the thermal energy transfer of light source to the liquid crystal panel of top.
Background technology
In order to cooperate modern life pattern, it is frivolous that the volume of video signal or device for image day by day is tending towards.Traditional cathode-ray tube (CRT) though still have its advantage, because the structure in internal electron chamber, makes the bulky of display and takes up space, and still has radiant rays to hinder problems such as eye when showing.Therefore, the plane formula display (Flat PanelDisplay) that cooperates photoelectric technology and semiconductor fabrication to be developed, for example LCD (LCD), organic light emitting display (OLED) or plasma display panel (Plasma Display Panel, PDP), become the main flow of display product gradually.
From the above, with regard to LCD, utilize kenel can slightly be divided into three kinds of reflective liquid-crystal display (reflective LCD), penetrating LCD (transmissive LCD) and semi-penetrated semi-reflected liquid crystal displays according to its lamp source.With the penetration or the LCD of semi-penetration, semi-reflective is example, it is made of a liquid crystal panel and a module backlight, wherein, liquid crystal panel is made of the liquid crystal layer that two transparency carriers and are disposed between this two transparency carrier, and module backlight is in order to provide this liquid crystal panel required face lamp source, so that LCD reaches the effect of demonstration.
Seeing also shown in Figure 1ly, is the diagrammatic cross-section of existing known a kind of module backlight.This module 100 backlight mainly is to comprise a framework 102, a reflector plate 104, at least one lamp source 106, a diffuser plate 108, several blooming pieces 110 and at least one supporting member 112.Wherein, reflector plate 104 is to be disposed at framework 102 bottoms, and lamp source 106 is to be disposed in the framework 102 and to be positioned at reflector plate 104 tops.In addition, diffuser plate 108 is to be disposed on the framework 102 and to be positioned at 106 tops, lamp source, and blooming piece 110 is to be disposed on the diffuser plate 108.In addition, supporting member 112 is to be disposed between reflector plate 104 and the diffuser plate 108.Certainly, above above-mentioned module backlight 100, also dispose the liquid crystal panel (not shown), to constitute LCD.
From the above, the display mode of LCD is to see through by the lamp source in the module backlight after the rete such as diffusion barrier, enters in the display with the form of area source.Yet, lamp source in the module backlight is when sending luminous energy, also be accompanied by distributing of heat energy, see through the retes such as diffusion barrier of module backlight when these heat energy, and then when being passed to the liquid crystal panel of top, will influence the show state of liquid crystal panel, for example because light source is passed to the heat energy of liquid crystal panel is not uniform energy, therefore can make that its heating degree of liquid crystal layer in the liquid crystal panel is inconsistent, and then influence the show uniformity of liquid crystal panel.In addition, these uneven heat energy also can have influence in the LCD as the thin film transistor (TFT) of element switch, make display effect be affected.
This shows that above-mentioned existing module backlight still has many defectives, and demands urgently further being improved.In order to solve the problem that module backlight exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing module backlight exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding a kind of module backlight of new structure, can improve general existing module backlight, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Fundamental purpose of the present invention is, overcome the defective that existing module backlight exists, and a kind of module backlight of new structure is provided, technical problem underlying to be solved is to make its thermal energy transfer that can solve light source to liquid crystal panel, shows uneven problem and cause.
Another object of the present invention is to, a kind of module backlight is provided, technical matters to be solved is to make it can solve display panel to be subjected to the heat energy influence, and influences the start of thin film transistor (TFT) and liquid crystal molecule.
Purpose of the present invention and to solve its technical problem underlying be to adopt following technical scheme to realize.According to the module a kind of backlight that the present invention proposes, it comprises: a framework; One reflector plate is disposed at this base of frame; At least one lamp source is disposed in this framework, and this lamp source is the top that is positioned at this reflector plate; One transparent cave template is disposed on this framework, and this transparent cave template is the top that is positioned at this lamp source; One diffuser plate is disposed on this transparent cave template, and can be formed with a space between this diffuser plate and this transparent cave template; And a plurality of blooming pieces, be disposed on this diffuser plate.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
Aforesaid module backlight, the height in this space between wherein said diffuser plate and the transparent cave template is between 2 centimetres to 5 centimetres.
Aforesaid module backlight, the material of wherein said transparent cave template comprises transparent acryl resin.
Aforesaid module backlight, it more comprises a plurality of supporting members, is configured between this transparent cave template and this diffuser plate.
Aforesaid module backlight, wherein said lamp source be selected from least one fluorescent tube and at least one LED lamp source one of them.
Aforesaid module backlight, wherein said those blooming pieces comprise brightening piece and prismatic lens.
Purpose of the present invention and solve its technical problem underlying and also realize by the following technical solutions.According to the module a kind of backlight that the present invention proposes, it comprises: a framework; One reflector plate is disposed at this base of frame; At least one lamp source is disposed in this framework, and this lamp source is the top that is positioned at this reflector plate; One diffuser plate is disposed on this framework, and this diffuser plate is the top that is positioned at this lamp source; One transparent cave template is disposed on this diffuser plate, and can be formed with a space between this diffuser plate and this transparent cave template; And a plurality of blooming pieces, be disposed on this transparent cave template.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
Aforesaid module backlight, the height in this space between wherein said diffuser plate and the transparent cave template is between 2 centimetres to 5 centimetres.
Aforesaid module backlight, the material of wherein said transparent cave template comprises transparent acryl resin.
Aforesaid module backlight, it more comprises a plurality of supporting members, is configured between this diffuser plate and this reflector plate.
Aforesaid module backlight, wherein said lamp source be selected from least one fluorescent tube and at least one LED lamp source one of them.
Aforesaid module backlight, wherein said those blooming pieces comprise brightening piece and prismatic lens.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:
The present invention proposes a kind of module backlight, and this module backlight comprises framework, reflector plate, lamp source, transparent cave template, diffuser plate and blooming piece.Wherein reflector plate is to be disposed at base of frame, and the lamp source is the top that is disposed in the framework and is positioned at reflector plate.In addition, transparent cave template is the top that is disposed on the framework and is positioned at the lamp source, and the material of wherein transparent cave template for example is transparent acryl resin (acryl).In addition, diffuser plate is to be disposed on the template of transparent cave, and can be formed with the space between this diffuser plate and the transparent cave template, and in addition, blooming piece is to be disposed on the diffuser plate.
The present invention also proposes another kind of module backlight, and this module backlight is to comprise framework, reflector plate, lamp source, diffuser plate, transparent cave template and blooming piece.Wherein reflector plate is to be disposed at base of frame, and the lamp source is the top that is disposed in the framework and is positioned at reflector plate.In addition, diffuser plate is the top that is disposed on the framework and is positioned at the lamp source.In addition, transparent cave template is to be disposed on the diffuser plate, and can be formed with the space between this transparent cave template and the diffuser plate, and the material of transparent cave template for example is transparent acryl resin.In addition, blooming piece is to be disposed on the template of transparent cave.
By above technical scheme as can be known, the present invention is owing to dispose extra transparent cave template in module backlight, just can block the transmission of heat energy by the space between transparent cave template and the diffuser plate, and then the thermal energy transfer that can solve existing known light source is to liquid crystal panel, and causes liquid crystal panel to show uneven problem.
In sum, the module backlight of special construction of the present invention, the thermal energy transfer that can solve light source causes to liquid crystal panel and shows uneven problem, can solve also that display panel is subjected to the heat energy influence and the problem that influences the start of thin film transistor (TFT) and liquid crystal molecule.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and more existing module backlight has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the diagrammatic cross-section that has known a kind of module backlight now.
Fig. 2 A to Fig. 2 B is the diagrammatic cross-section according to a kind of module backlight of a preferred embodiment of the present invention, and wherein Fig. 2 B is the diffuser plate of Fig. 2 A and the enlarged diagram of transparent cave template.
Fig. 3 A to Fig. 3 B is the diagrammatic cross-section according to a kind of module backlight of another preferred embodiment of the present invention, and wherein Fig. 3 B is the diffuser plate of Fig. 3 A and the enlarged diagram of transparent cave template.
100,200,300: module 102,202 backlight: framework
104,204: reflector plate 106,206: lamp source
108,210: diffuser plate 110,214: blooming piece
112,216,218: supporting member 208: transparent cave template
212: space 220: highly
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of module backlight, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Seeing also shown in Fig. 2 A to Fig. 2 B, is the diagrammatic cross-section according to a kind of module backlight of a preferred embodiment of the present invention, and wherein Fig. 2 B is the diffuser plate of Fig. 2 A and the enlarged diagram of transparent cave template.Please consult simultaneously shown in Fig. 2 A and Fig. 2 B, the module backlight 200 of preferred embodiment of the present invention, it comprises framework 202, reflector plate 204, at least one lamp source 206, transparent cave template 208, diffuser plate 210 and several blooming pieces 214, wherein:
This reflector plate 204 is the bottoms that are disposed at framework 202, and its be in order to reflectoscope source 206 not towards the light of display panel (not shown) direction radiation, to improve the utilization ratio in lamp source 206.In addition, reflector plate 204 for example is earlier the inner face of plate objects such as white coated plate or resin finished product to be carried out uneven surface processing, handles through the special surface of aluminum-based metal, to improve the brightness of reflection source again.
This lamp source 206, be to be disposed in the framework 202, and be positioned at the top of reflector plate 204, wherein this lamp source 206 for example is at least one fluorescent tube, at least one bulb, at least one LED lamp source or at least one fluorescent light source, and fluorescent light source more for example is straight tube, U word pipe or plane fluorescent lamp.In addition, this lamp source 206 for example is to fix lamp source 206 by the lamp source bearing (not shown) that is disposed on the framework 202.
This transparent cave template 208, be to be disposed on the framework 202, and be positioned at the top in lamp source 206 that the material of wherein transparent cave template 208 for example is transparent acryl resin (acrylic, acryl), and transparent cave template 208 more for example possess high printing opacity is arranged, characteristics such as low distortion and low moisture absorption.
This diffuser plate 210, be to be disposed on the transparent cave template 208, and can form space 212 between diffuser plate 210 and the transparent cave template 208, wherein the height 220 in this space 212 for example is between 2 centimetres to 5 centimetres, and include air in the space 212, so this air layer can be used as the barrier layer of heat energy.In addition, the material of diffuser plate 210 for example is slim acryl resin (acrylic resin, acryl) or polycarbonate resin (polycarbonate).When the direct light of light source 206 and reflected light during by diffuser plate 210, this diffuser plate 210 can be with the light average diffusion and present with the form of area source.
In addition, in the space 212 between transparent cave template 208 and diffuser plate 210, more comprise and dispose a plurality of supporting members 216 with the usefulness as support, wherein the material of supporting member 216 for example is transparent material, so that the configuration of supporting member 216 can not influence the characteristics of luminescence in lamp source 206.
These several blooming pieces 214, be to be disposed on the diffuser plate 210, these blooming pieces 214 for example are brightening piece and prismatic lens, the configuration of these blooming pieces 214 can make the area source of being launched by diffuser plate 210 enter fully in the liquid crystal panel (not shown) of module backlight 200 tops, to improve the utilization ratio in lamp source 206.
Therefore, from the above, the present invention's additional configuration in module backlight is provided with layer of transparent cave template, just can block the transmission of heat energy by the space between this transparent cave template and the diffuser plate, and then the thermal energy transfer that can effectively solve light source is to liquid crystal panel, and causes liquid crystal panel to show uneven problem.
Seeing also shown in Fig. 3 A to Fig. 3 B, is the diagrammatic cross-section according to a kind of module backlight of another preferred embodiment of the present invention, and wherein Fig. 3 B is the diffuser plate of Fig. 3 A and the enlarged diagram of transparent cave template.In this embodiment, be the top that transparent cave template is configured in diffuser plate, now its concrete structure is described in detail as follows.Please consult simultaneously shown in Fig. 3 A and Fig. 3 B, this module 300 backlight is to comprise framework 202, reflector plate 204, at least one lamp source 206, diffuser plate 210, transparent cave template 208 and several blooming pieces 214, wherein:
This reflector plate 204 is the bottoms that are disposed at framework 202, and this reflector plate 204 be in order to reflectoscope source 206 not towards the light of display panel (not shown) direction radiation, to improve the utilization ratio in lamp source 206.In addition, this reflector plate 204 for example is that the inner face to plate objects such as white coated plate or resin finished products carries out uneven surface processing, handles through the special surface of aluminum-based metal, to improve the brightness of reflection source again.
This lamp source 206, be to be disposed in the framework 202, and be positioned at the top of reflector plate 204, wherein this lamp source 206 for example is at least one fluorescent tube, at least one bulb, at least one LED lamp source or at least one fluorescent light source, and fluorescent light source more for example is straight tube, U word pipe or plane fluorescent lamp.In addition, this lamp source 206 for example is that nationality fixes lamp source 206 by the lamp source bearing (showing among the figure) that is disposed on the framework 202.
This diffuser plate 210 is to be disposed on the framework 202, and is positioned at the top in lamp source 206.Wherein the material of diffuser plate 210 for example is slim acryl resin (acryl) or polycarbonate resin, and when the direct light of light source 206 and reflected light during by diffuser plate 210, diffuser plate 210 can be with the light average diffusion and present with the form of area source.
This transparent cave template 208, be to be disposed on the diffuser plate 210, and can form space 212 between transparent cave template 208 and the diffuser plate 210, wherein the height 220 in this space 212 for example is between 2 centimetres to 5 centimetres, and the material of this transparent cave template 208 for example is transparent acryl resin (acryl), and this transparent cave template 208 more for example is to possess the clear sheet that high printing opacity is arranged, hang down characteristics such as distortion and low moisture absorption.In addition, the space 212 between transparent cave template 208 and diffuser plate 210 is owing to wherein including air, so can be used as the barrier layer of heat energy.
In addition, in the space 212 between transparent cave template 208 and diffuser plate 210, comprise that more configuration is provided with a plurality of supporting members 216 with the usefulness as support, wherein the material of this supporting member 216 for example is transparent material, so that the configuration of supporting member 216 can not influence the characteristics of luminescence in lamp source 206.
These several blooming pieces 214, be to be disposed on the transparent cave template 208, these blooming pieces 214 for example are brightening piece and prismatic lens, the configuration of these blooming pieces 214 can make the area source of being launched by diffuser plate 210 enter fully in the liquid crystal panel (not shown), to improve the utilization ratio in lamp source 206.
In addition, in above-mentioned module backlight (module 200 backlight and module 300 backlight), between reflector plate 204 and the transparent cave template 208 between (as shown in Figure 2) or reflector plate 204 and the diffuser plate 210 (as shown in Figure 3), can comprise that more at least one supporting member 218 is with the usefulness as support, wherein the material of this supporting member 218 for example is to use transparent material, so that supporting member 218 can not influence the characteristics of luminescence in lamp source 206.
It will be further appreciated that at the more configurable liquid crystal panel (not shown) in above-mentioned module backlight (module 200 backlight or module backlight 300) top, this liquid crystal panel and module backlight (module 200 backlight or module backlight 300) are to constitute LCD.Wherein this liquid crystal panel for example is general common by thin film transistor (TFT) (electric crystal) array base palte (TFT Array), active-matrix formula liquid crystal panel that colored optical filtering substrates and liquid crystal layer constituted, and this liquid crystal panel is to be equipped on the framework 202 of blooming piece 214 tops.In addition, also configuration is provided with the edge of another framework (not shown) with the covering liquid crystal panel, and liquid crystal panel is fixedly set on the framework 202, its fixed form for example is to grip liquid crystal panel jointly by another framework at the edge of liquid crystal panel and framework 202, again this another framework is locked on the framework 202 by screw, to finish the assembling of LCD.
From the above, the present invention is at (as shown in Figure 2) additional configuration has characteristics such as high printing opacity, low distortion and low moisture absorption between (as shown in Figure 1) or diffuser plate and the blooming piece between framework and the diffuser plate transparent cave template, the thermal energy transfer that just can solve existing known light source shows uneven problem to liquid crystal panel and cause.
In addition, the fundamental purpose that the present invention disposes this transparent cave template is, by the space between transparent cave template and the diffuser plate, blocks the transmission of heat energy, avoids thermal energy transfer to the liquid crystal panel of module backlight top.
In addition, the present invention only need between framework and the diffuser plate between (as shown in Figure 1) or diffuser plate and the blooming piece (as shown in Figure 2) additional configuration have high printing opacity, low distortion, and the transparent cave template of low moisture absorption, just can solve the problem of existing known product, wherein commercially available common acrylic resin board (acrylic plate) promptly has the character of above-mentioned requirements, therefore, the transparent cave template of this kind is not only obtained on material easily, and its buying cost is cheap, can't significantly promote the processing procedure cost.
In addition, it will be further appreciated that module backlight of the present invention has more than and limits the use of in using with the LCD collocation, the display of other module backlight of need arranging in pairs or groups also can utilize the present invention to finish assembling.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031565123A CN100357811C (en) | 2003-09-03 | 2003-09-03 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031565123A CN100357811C (en) | 2003-09-03 | 2003-09-03 | Backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1591128A CN1591128A (en) | 2005-03-09 |
| CN100357811C true CN100357811C (en) | 2007-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031565123A Expired - Fee Related CN100357811C (en) | 2003-09-03 | 2003-09-03 | Backlight module |
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| Country | Link |
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| CN (1) | CN100357811C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336350B (en) * | 2006-02-03 | 2010-06-23 | 夏普株式会社 | Lighting device and liquid crystal display device |
| CN101630089B (en) * | 2008-07-16 | 2012-10-24 | 奇美电子股份有限公司 | Backlight module and liquid crystal display using same |
| CN102494297A (en) * | 2011-12-07 | 2012-06-13 | 南京中电熊猫液晶显示科技有限公司 | Backlight module utilizing ambient light and liquid crystal display device comprising same |
| CN104197245B (en) * | 2014-09-09 | 2017-06-16 | 深圳市华星光电技术有限公司 | Backlight module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6461730A (en) * | 1987-09-02 | 1989-03-08 | Hitachi Ltd | Back light system liquid crystal display device |
| US5128781A (en) * | 1989-09-21 | 1992-07-07 | Nippon Steel Corporation | Transmissive liquid display apparatus having a thin construction without diminished brightness |
| US20020044437A1 (en) * | 2000-10-14 | 2002-04-18 | Lee Joung Jae | Back light assembly for liquid crystal display device |
| CN1400499A (en) * | 2001-07-31 | 2003-03-05 | 日本电气株式会社 | Back lighting unit irradiating object homogeneously and its liquid crystal display board device |
-
2003
- 2003-09-03 CN CNB031565123A patent/CN100357811C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6461730A (en) * | 1987-09-02 | 1989-03-08 | Hitachi Ltd | Back light system liquid crystal display device |
| US5128781A (en) * | 1989-09-21 | 1992-07-07 | Nippon Steel Corporation | Transmissive liquid display apparatus having a thin construction without diminished brightness |
| US20020044437A1 (en) * | 2000-10-14 | 2002-04-18 | Lee Joung Jae | Back light assembly for liquid crystal display device |
| CN1400499A (en) * | 2001-07-31 | 2003-03-05 | 日本电气株式会社 | Back lighting unit irradiating object homogeneously and its liquid crystal display board device |
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| Publication number | Publication date |
|---|---|
| CN1591128A (en) | 2005-03-09 |
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