CN1560676A - Backlight assembly - Google Patents
Backlight assembly Download PDFInfo
- Publication number
- CN1560676A CN1560676A CNA2004100069126A CN200410006912A CN1560676A CN 1560676 A CN1560676 A CN 1560676A CN A2004100069126 A CNA2004100069126 A CN A2004100069126A CN 200410006912 A CN200410006912 A CN 200410006912A CN 1560676 A CN1560676 A CN 1560676A
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- CN
- China
- Prior art keywords
- light
- guide plate
- module backlight
- light guide
- photodiffusion material
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Abstract
The invention relates to a back light assembly, which is mainly made up of light guiding board and at least a light source. The light guiding board has a light outgoing surface, a light dispersing surface; at least a light incoming surface and several sides, and the incoming surface and the sides are adjoined between the dispersing surface and the outgoing surface. And, the sides of the light guiding board cloudy surface, or the sides have patterns, or there arranges some light dispersing material on the sides. The light source is arranged by side of the incoming surface of the guiding board.
Description
Technical field
The present invention relates to a kind of module backlight (Back light module), (Light Guide Plate, side LGP) has the module backlight of light scattering effect particularly to relate to a kind of its light guide plate.
Background technology
Along with the significantly progressive and the Internet of computing power, the high development of multimedia technology, the transmission of image information at present transfers numerical digit (numeral) transmission to by analogy (simulation) mostly.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 that display is bulky and takes up space, and still has radiant rays to hinder problems such as eye when showing.Therefore, the plane formula display (Flat Panel Display) that cooperates photoelectric technology and semiconductor fabrication to be developed, for example LCD (LCD), organic light emitting display (OLED) or plasma display panel (Plasma DisplayPanel, 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 light 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 area source, so that LCD reaches the effect of demonstration.
Seeing also shown in Figure 1ly, is the explosive view of known a kind of backlight liquid crystal display module.Module 100 backlight is made of a plate light guide plate 110 and two light sources 120.Wherein, plate light guide plate 110 has the smooth diffusingsurface of a light-emitting face 112, one 114, two light entrance faces 116 and a plurality of sides 118, and light entrance face 116 and side 118 be adjacent to respectively light diffusingsurface 114 and light-emitting face 112 between.Light source 120 is that to be disposed at the light entrance face 116 of plate light guide plate 110 other, and the light that light source 120 is sent is in light entrance face 116 is incident in plate light guide plate 110, is finally penetrated by the light-emitting face 112 of plate light guide plate 110 again.
Please consult shown in Figure 1ly again, the part light that light source 120 is sent can arrive the side 118 of plate light guide plate 110 after being incident in plate light guide plate 110.But the side 118 of known plate light guide plate 110 is even surfaces, and the light that therefore exposes to side 118 promptly can directly pass plate light guide plate 110, but not penetrates from light-emitting face 112.Thus, the light that is sent by light source 120 also can't be utilized fully, thereby makes that the light utilization ratio of module backlight is low, and then influences the image quality of LCD.In other words, the light intensity that module backlight provided will directly have influence on the output result of digitized video, therefore the light utilization ratio of module backlight be always this field deviser's concern focus one, become the important topic of current research and development about the light utilization ratio that how to promote module backlight.
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 do not 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 novel module backlight, 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
The objective of the invention is to, overcome the defective that existing module backlight exists, and a kind of new module backlight is provided, technical matters to be solved is to make the side of its light guide plate have light scattering effect, be suitable for avoiding light to spill from the side of light guide plate, with improve the light utilization ratio and and then increase the intensity of light source that module backlight can provide, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.Module a kind of backlight according to the present invention's proposition, it comprises at least: a light guide plate, have a light-emitting face, a smooth diffusingsurface, at least one light entrance face and most sides, wherein this light entrance face and those sides are adjacent to respectively between this light diffusingsurface and this light-emitting face, and those sides are cloudy surfaces; And at least one light source is disposed at by this light entrance face of this light guide plate.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid module backlight, it more comprises a photodiffusion material, is disposed on those sides of this light guide plate.
Aforesaid module backlight, wherein said photodiffusion material comprises titania (TiO
2), tantalum pentoxide (Ta
2O
5), silicon nitride (Si
3N
4) and aluminium oxide (Al
2O
3) one of them.
Aforesaid module backlight, wherein said photodiffusion material comprises metal.
Aforesaid module backlight, wherein said 5 photodiffusion materials comprise graphite.
Aforesaid module backlight, it more comprises a light-reflecting sheet, is disposed on this light diffusingsurface of this light guide plate.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.Module a kind of backlight according to the present invention's proposition, it comprises at least: a light guide plate, have a light-emitting face, a smooth diffusingsurface, at least one light entrance face and most sides, wherein this light entrance face and those sides are adjacent to respectively between this light diffusingsurface and this light-emitting face, and have a pattern on those sides respectively; And at least one light source is disposed at by this light entrance face of this light guide plate.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid module backlight, wherein said pattern is a regular pattern.
Aforesaid module backlight, wherein said pattern is an irregular pattern.
Aforesaid module backlight, it more comprises a photodiffusion material, is disposed on those patterning sides of this light guide plate.
Aforesaid module backlight, wherein said photodiffusion material comprises titania (TiO
2), tantalum pentoxide (Ta
2O
5), silicon nitride (Si
3N
4) and aluminium oxide (Al
2O
3) one of them.
Aforesaid module backlight, wherein said photodiffusion material comprises metal.
Aforesaid module backlight, wherein said photodiffusion material comprises graphite.
Aforesaid module backlight, it more comprises a light-reflecting sheet, is disposed on this light diffusingsurface of this light guide plate.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.Module a kind of backlight according to the present invention's proposition, it comprises at least: a light guide plate, have a light-emitting face, a smooth diffusingsurface, at least one light entrance face and most sides, wherein this light entrance face and those sides are adjacent to respectively between this light diffusingsurface and this light-emitting face; One photodiffusion material is disposed on those sides of this light guide plate; And at least one light source is disposed at by this light entrance face of this light guide plate.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid module backlight, wherein said photodiffusion material comprises titania (TiO
2), tantalum pentoxide (Ta
2O
5), silicon nitride (Si
3N
4) and aluminium oxide (Al
2O
3) one of them.
Aforesaid module backlight, wherein said photodiffusion material comprises metal.
Aforesaid module backlight, wherein said photodiffusion material comprises graphite.
Aforesaid module backlight, it more comprises a light-reflecting sheet, is disposed on this light diffusingsurface of this light guide plate.
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, is made of a light guide plate and at least one light source.Wherein, light guide plate has a light-emitting face, a smooth diffusingsurface, at least one light entrance face and a plurality of side, and light entrance face and side are adjacent to respectively between light diffusingsurface and the light-emitting face, and the side is a cloudy surface.Light source is to be disposed at by the light entrance face of light guide plate.
Based on aforementioned goal of the invention, the present invention proposes a kind of module backlight in addition, is made of a light guide plate and at least one light source.Wherein, light guide plate has a light-emitting face, a smooth diffusingsurface, at least one light entrance face and a plurality of side, and light entrance face and side are adjacent to respectively between light diffusingsurface and the light-emitting face, and has a pattern respectively on each side.Pattern on the side for example is regular pattern or irregular pattern or rule and irregular mixed pattern.Light source is to be disposed at by the light entrance face of light guide plate.
In above-mentioned two kinds of embodiment, module backlight for example more comprises a photodiffusion material, is disposed on the side of light guide plate.
Based on aforesaid goal of the invention, the present invention reintroduces a kind of module backlight, is made of a light guide plate, a photodiffusion material and at least one light source.Wherein light guide plate has a light-emitting face, a smooth diffusingsurface, at least one light entrance face and a plurality of side, and light entrance face and side are adjacent to respectively between light diffusingsurface and the light-emitting face.Photodiffusion material is to be disposed on the side of light guide plate.Light source is to be disposed at by the light entrance face of light guide plate.
In above-mentioned three kinds of embodiment, photodiffusion material for example is titania, tantalum pentoxide (Ta
2O
5), silicon nitride (Si
3N
4) or aluminium oxide (Al
2O
3).Perhaps, photodiffusion material for example is a metal.Certainly, also graphite of photodiffusion material.Module backlight for example more comprises a light-reflecting sheet, is disposed on the light diffusingsurface of light guide plate.
In sum, the side of light guide plate of the present invention is a cloudy surface, perhaps has pattern on the side, or disposes photodiffusion material on the side of light guide plate, therefore the light that exposes to the side of light guide plate can be scattered back in the light guide plate, and final light-emitting face outgoing by light guide plate.
Via as can be known above-mentioned, the invention relates to a kind of module backlight, constituted by a light guide plate and at least one light source.Wherein, light guide plate has a light-emitting face, a smooth diffusingsurface, at least one light entrance face and a plurality of side, and light entrance face and side are adjacent to respectively between light diffusingsurface and the light-emitting face.And the side of light guide plate is a cloudy surface, perhaps has pattern on the side, or disposes a photodiffusion material on the side of light guide plate.Light source is to be disposed at by the light entrance face of light guide plate.
By technique scheme, the present invention's module backlight has following advantage at least: directly can be recovered utilization by the light of the side outgoing of light guide plate in the known module backlight, and then improve the light intensity by the emergent light of light-emitting face.So module backlight of the present invention has better light utilization efficiency, can provide an area source with highlight strength.
In sum, the module backlight of special construction of the present invention, 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, thereby 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 explosive view of known a kind of backlight liquid crystal display module.
Fig. 2 is the explosive view of the module backlight of first embodiment of the invention.
Fig. 3 is the explosive view of the module backlight of second embodiment of the invention.
100: module 110 backlight: plate light guide plate
112: light-emitting face 114: the light diffusingsurface
116: light entrance face 118: side
120: light source 200,300: module backlight
210,310: light guide plate 212,312: light-emitting face
214,314: light diffusingsurface 216,316: light entrance face
218,318: side 220,320: light source
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.
[first embodiment]
See also shown in Figure 2ly, Fig. 2 is the explosive view of the module backlight of first embodiment of the invention.Module 200 backlight is made of a light guide plate 210 and two light sources 220.Wherein, light guide plate 210 has the smooth diffusingsurface of a light-emitting face 212, one 214, two light entrance faces 216 and a plurality of sides 218, and light entrance face 216 and side 218 are adjacent to respectively between light diffusingsurface 214 and the light-emitting face 212.
In module 200 backlight of the present invention, the side 218 of light guide plate 210 is cloudy surfaces.The generation type of this cloudy surface for example is when light guide plate 210 is shaped, and just the mode of side 218 with cloudy surface is shaped, or side 218 is processed to form cloudy surface after light guide plate 210 is shaped again.Perhaps, the side 218 of light guide plate 210 for example is to have regular pattern or irregular pattern or rule and irregular mixed pattern.Certainly, also a photodiffusion material can be disposed on the side 218 of light guide plate 210, photodiffusion material for example is titania, tantalum pentoxide, silicon nitride or aluminium oxide.Perhaps, photodiffusion material also can use metal.Certainly, also graphite of photodiffusion material.
In addition, the configuration of photodiffusion material also can be arranged in pairs or groups and is applied to light guide plate 210 on the side 218 of atomizing processing or patterned process, in the hope of obtaining best light scattering effect.
In addition, module 200 backlight for example more comprises a light-reflecting sheet (figure does not show), is disposed on the light diffusingsurface 214 of light guide plate 210.
Please consult shown in Figure 2ly again, light guide plate 210 for example is a plate light guide plate, and adopts the design of bilateral light inlet.Light source 220 is light entrance face 216 sides that are disposed at light guide plate 210, and light source 220 for example is to be a cathode fluorescent tube (Cold Cathode Fluorescent Lamp, CCFL) or a light emitting diode (Light Emitting Diode, LED) line source such as array.Wherein, the light that light source 220 is sent mainly is to be incident in the light guide plate 210 by light entrance face 216, and by after light diffusingsurface 214 reflection again by light-emitting face 212 outgoing.In addition, because on the side 218 of light guide plate 210 is cloudy surface, perhaps has pattern on the side 218, or dispose photodiffusion material on the side 218, therefore expose to the part of side 218 in the light that light source 220 is sent, can get back in the light guide plate 210 final light-emitting face 212 outgoing by the scattering of side 218 once again from light guide plate 210.
[second embodiment]
Fig. 3 is the explosive view of the module backlight of second embodiment of the invention.Please refer to Fig. 3, in the module backlight 300 of present embodiment, mainly is that light guide plate 310 is a wedge shape light guide plate and the design of adopting monolateral light inlet, and all the other are partly then roughly identical with first embodiment.The side 318 of light guide plate 310 is cloudy surfaces.The generation type of this cloudy surface for example is when light guide plate 310 is shaped, and just the mode of side 318 with cloudy surface is shaped, or side 318 is processed to form cloudy surface after light guide plate 310 is shaped again.Perhaps, the side 318 of light guide plate 310 for example is to have regular pattern or irregular pattern or rule and irregular mixed pattern.Certainly, also a photodiffusion material can be disposed on the side 318 of light guide plate 310.Photodiffusion material for example is titania, tantalum pentoxide, silicon nitride or aluminium oxide.Perhaps, photodiffusion material also can use metal.Certainly, also graphite of photodiffusion material.In addition, the configuration of photodiffusion material also can be arranged in pairs or groups and is applied to light guide plate 310 on the side 318 of atomizing processing or patterned process, in the hope of obtaining best light scattering effect.
In sum, because in the module backlight of the present invention, the side of light guide plate is a cloudy surface, perhaps has pattern on the side, again or dispose photodiffusion material on the side of light guide plate, therefore the light that can avoid light source to send penetrates from the side after being incident in light guide plate, makes all light finally by the light-emitting face outgoing of light guide plate.And, because the side of light guide plate can make light produce the effect of scattering, therefore can make the homogeneity of the light that penetrates light guide plate better.So module backlight of the present invention can improve the light utilization ratio and strengthen light scattering, that is can provide one to have highlight strength and the good area source of homogeneity.
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, in every case be the 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 (19)
1, a kind of module backlight is characterized in that it comprises at least:
One light guide plate has a light-emitting face, a smooth diffusingsurface, at least one light entrance face and most sides, and wherein this light entrance face and those sides are adjacent to respectively between this light diffusingsurface and this light-emitting face, and those sides are cloudy surfaces; And
At least one light source is disposed at by this light entrance face of this light guide plate.
2, module backlight according to claim 1 is characterized in that it more comprises a photodiffusion material, is disposed on those sides of this light guide plate.
3, module backlight according to claim 2 is characterized in that wherein said photodiffusion material comprises titania (TiO
2), tantalum pentoxide (Ta
2O
5), silicon nitride (Si
3N
4) with aluminium oxide (Al2O3) one of them.
4, module backlight according to claim 2 is characterized in that wherein said photodiffusion material comprises metal.
5, module backlight according to claim 2 is characterized in that wherein said photodiffusion material comprises graphite.
6, module backlight according to claim 1 is characterized in that it more comprises a light-reflecting sheet, is disposed on this light diffusingsurface of this light guide plate.
7, a kind of module backlight is characterized in that it comprises at least:
One light guide plate has a light-emitting face, a smooth diffusingsurface, at least one light entrance face and most sides, and wherein this light entrance face and those sides are adjacent to respectively between this light diffusingsurface and this light-emitting face, and have a pattern on those sides respectively; And
At least one light source is disposed at by this light entrance face of this light guide plate.
8, module backlight according to claim 7 is characterized in that wherein said pattern is a regular pattern.
9, module backlight according to claim 7 is characterized in that wherein said pattern is an irregular pattern.
10, module backlight according to claim 7 is characterized in that it more comprises a photodiffusion material, is disposed on those patterning sides of this light guide plate.
11, module backlight according to claim 10 is characterized in that wherein said photodiffusion material comprises titania (TiO
2), tantalum pentoxide (Ta
2O
5), silicon nitride (Si
3N
4) and aluminium oxide (Al
2O
3) one of them.
12, module backlight according to claim 10 is characterized in that wherein said photodiffusion material comprises metal.
13, module backlight according to claim 10 is characterized in that wherein said photodiffusion material comprises graphite.
14, module backlight according to claim 7 is characterized in that it more comprises a light-reflecting sheet, is disposed on this light diffusingsurface of this light guide plate.
15, a kind of module backlight is characterized in that it comprises at least:
One light guide plate has a light-emitting face, a smooth diffusingsurface, at least one light entrance face and most sides, and wherein this light entrance face and those sides are adjacent to respectively between this light diffusingsurface and this light-emitting face;
One photodiffusion material is disposed on those sides of this light guide plate; And
At least one light source is disposed at by this light entrance face of this light guide plate.
16, module backlight according to claim 15 is characterized in that wherein said photodiffusion material comprises titania (TiO
2), tantalum pentoxide (Ta
2O
5), silicon nitride (Si
3N
4) and aluminium oxide (Al
2O
3) one of them.
17, module backlight according to claim 15 is characterized in that wherein said photodiffusion material comprises metal.
18, module backlight according to claim 15 is characterized in that wherein said photodiffusion material comprises graphite.
19, module backlight according to claim 15 is characterized in that it more comprises a light-reflecting sheet, is disposed on this light diffusingsurface of this light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100069126A CN1560676A (en) | 2004-02-26 | 2004-02-26 | Backlight assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100069126A CN1560676A (en) | 2004-02-26 | 2004-02-26 | Backlight assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1560676A true CN1560676A (en) | 2005-01-05 |
Family
ID=34439827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100069126A Pending CN1560676A (en) | 2004-02-26 | 2004-02-26 | Backlight assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1560676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8366309B2 (en) | 2008-12-25 | 2013-02-05 | Au Optronics Corporation | Light guide plate having lateral optical structures and backlight module having the light guide plate |
| CN103292211A (en) * | 2012-08-21 | 2013-09-11 | 厦门天马微电子有限公司 | Backlight module of liquid crystal display and liquid crystal display |
-
2004
- 2004-02-26 CN CNA2004100069126A patent/CN1560676A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8366309B2 (en) | 2008-12-25 | 2013-02-05 | Au Optronics Corporation | Light guide plate having lateral optical structures and backlight module having the light guide plate |
| CN103292211A (en) * | 2012-08-21 | 2013-09-11 | 厦门天马微电子有限公司 | Backlight module of liquid crystal display and liquid crystal display |
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