CN2725938Y - Direct falling type backlight module tructure of high uniformity illuminating - Google Patents
Direct falling type backlight module tructure of high uniformity illuminating Download PDFInfo
- Publication number
- CN2725938Y CN2725938Y CN 200420073165 CN200420073165U CN2725938Y CN 2725938 Y CN2725938 Y CN 2725938Y CN 200420073165 CN200420073165 CN 200420073165 CN 200420073165 U CN200420073165 U CN 200420073165U CN 2725938 Y CN2725938 Y CN 2725938Y
- Authority
- CN
- China
- Prior art keywords
- light
- light diffusing
- diffusing sheet
- lens
- mode set
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model relates to a direct falling type backlight module structure of high uniformity illumination, which provides a design of a columnar lens of a light diffusing plate. The columnar lens of the utility model is arranged in the central position of the corresponding light source to scatter the light of the light tube in the central position. The further position from the light source has the larger angularity of the columnar lens, so that the scattering effect can be decreased to achieve the purpose of homogenization. The design of the other columnar lens of the utility model can be determined by the position of the light source and the distance. The incident light at the position corresponding to the light source of each columnar lens can be refracted by the surface angle of the incident light surface microstructure. But the light at the position of long distance possibly generates total reflection because of oversize incoming angle, which reduces passing through light and influences uniformity. So the total reflection of the wide angle can be reduced.
Description
Technical field
The utility model is relevant for the luminous down straight aphototropism mode set structure of a kind of high evenness, and it refers to a kind of down straight aphototropism mode set especially, and it provides a light diffusing sheet with high light diffusibleness, high light transmittance and low manufacturing cost.
Background technology
Along with popularizing of HDTV, DVD Player and Digital Television, the quality of television image more and more is subjected to the attention in market, add that traditional iconoscope TV has high power consumption, high radiation, flicker and heavy shortcoming, in the competition of this several years displays, be subjected to high-resolution new generation display device gradually and replace.In new display from generation to generation, LCD is paid much attention to, the display technique of potentialization.Because Japan and Korea S and Taiwan Da Chang actively drop into research and development and adopt the production equipment of large-scale words, the quality of LCD constantly progresses greatly, and price keeps falling, and has driven the demand of LCD, makes that also the requirement of correlation technique development is strict more.LCD be by the electric field switch with the control picture displayed, only liquid crystal panel itself can't emit beam, needing provide the display light source by module backlight.Generally speaking, Backlight For Liquid Crystal Display Panels mainly contains two kinds of forms, illuminated and the straight-down negative of side, and the illuminated backlight of side since fluorescent tube quantity and light transmission apart from influence, high brightness and uniform light source can't be provided on large-sized liquid crystal display applications, and direct-light-type backlight can be by the increase of fluorescent tube, reaches the requirement of large scale liquid crystal display with the design of diffusion component.More in addition, the illuminated module backlight of side is for the even distribution of light, employed light guide plate can increase thickness greatly along with the change of size, according to calculating, the light guide plate of 21 cun mean flow rate 5000cd/m2, weight are just up to more than 2 kilograms, at display now under the trend of lightweight development, the weight of backlight becomes very important problem, uses diffuser plate then can reduce by 60%～80% weight, in the application of large scale module backlight remarkable advantages is arranged.
Down straight aphototropism mode set uses diffuser plate to replace the illuminated light guide plate of side as the important original paper that light is evenly dispersed.Diffuser plate, as the term suggests be to be diffused as topmost function with light, known for example advertising lamp box, luminous signboard even hospital inspect and nearly all are to use similar diffusion sheet material that light is evenly distributed on the employed lamp box of X-ray sheet, on the effect of light diffusion pretty good effect are arranged also.Though but early stage diffuser efficiency meets the requirements, but the penetrance of light and uniformity coefficient still are not enough to use the application facet at display, the most direct feature is exactly a luminance shortage, generally speaking the full light territory penetration of these products is between 30～50%, under the trend of high brightnessization, do not met user demand at display.In recent years, the big factory of sheet material of Japan improves at these shortcomings one after another, control by the change of interpolation light diffusing agent kind and the strictness on the processing procedure, successful lifting the efficient and the uniformity coefficient of light penetration.Though the penetrance of light can rise to 50～70% by these improvement, but along with the requirement of product is more and more higher, such penetrance is still and not satisfied by the client, on the other hand, in order to reach thinner display product design, therefore module backlight certainly will have the requirement of higher diffusibleness towards lightening development, and in diffuser plate, used a large amount of light diffusing agents, and cause the decline of penetrance.In brief, high diffusibleness and high penetration are in existing diffusion board structure, and what be difficult to be made the best of both worlds presents, and has only to change diffuser plate or back light module unit structure, just can take into account the demand of high brightness and high diffusibleness.At present LCD TV or module backlight manufacturer have taked a kind of method of accommodation, they use the diffuser plate than high penetration, this moment, the vestige of cold-cathode tube can't be by diffusion version institute homogenising, so they the exiting surface of diffuser plate put 1～2 diffusion barrier with light in scattering once to reach effect of uniform, big in such event appointment causes the energy loss of light 5～10%, the use of the brightness enhancement film of arranging in pairs or groups again is with the concentrated part to cover the loss of light.Can reach the lightening purpose of module thus, but but can cause cost significantly improve the shortcoming that the angle of visibility with TV dwindles.
LCD (Liquid Crystal Display, LCD) on, because liquid crystal panel itself can't be luminous, needing provides the display light source by module backlight, and light diffusing sheet (Light Diffuser) is the significant components of light diffusion in the module backlight, its function is evenly disperseed for the light that cold-cathode tube (CCFL) is sent, to provide liquid crystal panel stable and uniform light source, and the brightness of LCD and quality, with the usefulness of light source inseparable relation is arranged, and in this light diffusing sheet, add light diffusing agent increasing the dispersion effect of its light, yet the costing an arm and a leg of light diffusing agent.
Therefore, how the luminous down straight aphototropism mode set structure of a kind of novel high evenness to be proposed at the problems referred to above, not only can improve tradition and need to use a large amount of shortcoming of light diffusing agent in light diffusing sheet, the diffusibleness and the penetrance that can increase light again have the saving manufacturing cost concurrently, the inventor works out the luminous down straight aphototropism mode set structure of a kind of high evenness, can solve the above problems.
Summary of the invention
Fundamental purpose of the present utility model, the down straight aphototropism mode set structure that provides a kind of high evenness luminous is provided, it utilizes the structure of a light diffusing sheet to make its diffusibleness that increases light, penetrance and saves manufacturing cost, this light diffusing sheet has a plurality of lens pillars in plane of incidence surface, and between two lens pillars of these a plurality of lens pillars apart from half of two space between light sources that is a plurality of light sources, and, the position of this lens pillar is that the center of corresponding light source is set, to reduce the total reflection in wide-angle.
Secondary objective of the present utility model, the down straight aphototropism mode set structure that provides a kind of high evenness luminous is provided, the lens pillar of this light diffusing sheet is the center of corresponding light source and being provided with, the curvature of this lens pillar is along with its curvature of progressively increasing away from light source, and with near fluorescent tube curvature in period be minimum, it sees through when away from light source, and the curvature of its lens pillar is bigger, reaches the purpose of homogenising with the effect that lowers scattering.
The utility model is the luminous down straight aphototropism mode set structure of a kind of high evenness, and the design that it provides a kind of saturating border of column of light diffusing sheet is that the light source in the collocation module backlight adopts column saturating border design.Lens pillar of the present utility model is to exist in the center of corresponding fluorescent tube, comes with light scatter that should the zone fluorescent tube, and is bigger from the heal curvature in its saturating border of column, position far away of fluorescent tube, reaches the purpose of homogenising with the effect that lowers scattering.The design of another lens pillar of the present utility model also can decide at the position of fluorescent tube and distance, exist in the mode that makes up, every group lens pillar correspondence the position of cold-cathode tube, to meet the effect of lens design.The light of incident can be reflected by the angle of incident light plane micro-structure surface, but the position far away in distance then may produce total reflection because incident angle is excessive, cause this place to penetrate the minimizing of light, influence uniformity coefficient, so can reduce total reflection in wide-angle.Except lens pillar, diffusion sheet material body contains an amount of light diffusing agent simultaneously, and light is further disperseed, and makes its homogenising.
Moreover, provide a two-sided lens pillar go out, the incidence surface place, make and the equidirectional lens pillar of incidence surface this moment, light can be launched towards horizontal direction, covers or the bright trace of scattering fluorescent tube to advance one one.
Description of drawings
Figure 1A is the structural representation of the down straight aphototropism mode set of a preferred embodiment of the present utility model;
Figure 1B is that the light conduct of a preferred embodiment of the present utility model is in the synoptic diagram of light diffusing sheet;
Fig. 2 A is the structural representation of the light diffusing sheet of a preferred embodiment of the present utility model;
Fig. 2 B is the structural representation of the light diffusing sheet of another preferred embodiment of the present utility model;
Fig. 2 C is the structural representation of the light diffusing sheet of another preferred embodiment of the present utility model;
Fig. 2 D is the structural representation of the light diffusing sheet of another preferred embodiment of the present utility model; And
Fig. 3 is the comparison diagram of the light diffusing sheet of a preferred embodiment of the present utility model.
The figure number explanation
More than 20 light source of 1 down straight aphototropism mode set, 10 reflector plates
22 first light sources, 24 secondary light sources, 30 light diffusing sheets
32 light diffusing agents, 320 incident lights surface, 322 lens pillars
340 emergent lights surface, 34 light, 40 prismatic lenses
50 panels, 100 first lens pillars, 110 second lens pillars
120 the 3rd lens pillars 130 the 4th lens pillar 140 the 5th lens pillar
R curvature S distance
Embodiment
The utility model has increased the lens arrangement (lenticular) of column in the plane of incidence of the light of a light diffusing sheet, every group of structure and the corresponding position and the design of light source, change the path that light advances by refraction or reflection that rays pass through lens produced, reach the effect of scattered beam.And can be changed the shape and the distribution of microstructure by the design of optics, the angle of distributing incident ray is to meet the required collocation demand of module backlight.In traditional diffuser plate design, can reach good effect though improve the light diffusibleness of diffuser plate at shield light source side face, but but can reduce the penetrance of diffuser plate, only increase diffusibleness in the utility model at position near fluorescent tube, the loss of penetrance can be dropped to minimum, to reach the purpose that promotes brightness.
Because costing an arm and a leg of light diffusing agent, new design can increase the light diffusibleness by lens pillar, and the addition of minimizing light diffusing agent improves the penetrance because of absorption that light diffusing agent causes or reflection except reducing, and also can reduce the cost of products material.No matter with extrusion sheet material or casting sheet material, can't increase the complexity of production, the characteristics that are easy to produce are arranged.Therefore, new diffuser plate design has the advantage that promotes the diffuser plate function and reduce cost.
In addition, in the position near light source, the zone of light trial of strength just imposes the design in the saturating border of column, light scatter can be reduced the brightness at this place, and it is scattered to darker zone, to improve the uniformity coefficient of diffusion, can reduce again simultaneously because the penetrance that lens pillar causes reduces.
See also Fig. 1, it is the structural representation of the down straight aphototropism mode set of a preferred embodiment of the present utility model; As shown in the figure, the down straight aphototropism mode set structure that high evenness of the present utility model is luminous, wherein this down straight aphototropism mode set 1 comprises a reflector plate (reflector) 10; A plurality of light sources (lightsource) 20, it is positioned at the top of this reflector plate 10; One light diffusing sheet (diffuser) 30, it is in the top of these a plurality of light sources 20; One prismatic lens (prism sheet) 40, it is positioned at the top of this light diffusing sheet 30; And a panel (panel) 50, it is positioned at the top of this prismatic lens 40.
Wherein, these a plurality of light sources 20 are cold cathode fluorescent lamp (CCFL); It is selected from one of them of acryl resin, epoxy resin, PU, transparent heat hardening resin or uv-hardening resin the material of this light diffusing sheet 30, and this light diffusing sheet 30 comprises a plurality of light diffusing agents 32, see also Figure 1A, technical characterictic of the present utility model promptly is provided with a plurality of lens pillars 322 on the incident light surface 320 of this light diffusing sheet 30, make light 34 change the path that light advances, reach the effect of scattered beam by refraction that is produced by this lens pillar 322 or reflection.
Moreover the storing position that focuses on this lens pillar 322 of the present utility model sees also Fig. 2 A, and it is the structural representation of the light diffusing sheet of a preferred embodiment of the present utility model; As shown in the figure, the utility model makes this light diffusing sheet 30 and the incident light surface of these a plurality of light source 20 adjacency have a plurality of lens pillars 322, and the spacing of these a plurality of light sources is S, then the spacing of this lens pillar 322 is S/2, the structure correspondence of every lens pillar the position and the design of light source, change the path that light advances by light by refraction or the reflection that lens pillar produced, reach the effect of scattered beam.
Again, see also Fig. 2 B, it is the structural representation of the light diffusing sheet of another preferred embodiment of the present utility model; As shown in the figure, the utility model is by the shape and the distribution of the structure of the lens pillar of the design change light diffusing sheet of optics, and the angle of distributing incident ray is to meet required high brightness of down straight aphototropism mode set and luminous uniform requirement.In traditional diffuser plate design, can reach good effect though improve the light diffusibleness of diffuser plate at shield light source side face, but but can reduce the penetrance of diffuser plate, only increase diffusibleness in the utility model at position near fluorescent tube, the loss of penetrance can be dropped to minimum, to reach the purpose that promotes brightness, this light diffusing sheet 30 has a plurality of lens pillars 322 with the incident light surface of these a plurality of light source 20 adjacency, the curvature distribution of these a plurality of lens pillars is incremented to the middle of this first light source and a secondary light source 24 from one first light source 22 for the curvature minimum value, curvature is maximal value, curvature is decremented to this secondary light source then, curvature is minimum value, so the curvature of one first lens pillar 100 is R1, the curvature of one second lens pillar 110 is R2, and the curvature of one the 3rd lens pillar 120 is R3, and the curvature of one the 4th lens pillar 130 is R4, the curvature of one the 5th lens pillar 150 is R5, so the size of this curvature is R5＞R4＞R3＞R2＞R1.
Continuous Fig. 2 C and Fig. 2 D of consulting, wherein the lens pillar of this Fig. 2 A and Fig. 2 B can be and is arranged on this 320 and one emergent light surface 320, incident light surface.
Molding mode with light diffusing sheet of lens pillar can be divided into three kinds:
1, straight forming during extrusion sheet material is in the surface working of cooling wheel of extruder or No. two cooling wheels, at the rag of cooling wheel surface working lens pillar, as shown in Figure 4.When extrusion sheet material, on sheet material, run off the shape of lens pillar by the rag on cooling wheel surface.
2, use the casting mould moulding, use the acryl monomer between the sheet glass mould, to carry out the agglomerate polymerization, and obtain the finished product of acryl sheet material, it is the technology for a long time of habit, but change the surface morphology of flat plate mold in the utility model, lens pillar is machined on the metal plate, and casts acrylic plate, lens pillar can be duplicated on acryl sheet material finished product with it.
3, use transparent resin moulding on diffuser plate, lens pillar is formed on moulding on the sheet metal and is mould, resin is evenly coated on the mould, again diffuser plate is begun by an end, evenly be covered on the mould, treat the demoulding behind the hardening of resin, can obtain finished product.Resin can use acryl, epoxy resin, PU or other transparent heat constrictive type or uv-hardening resin.
Below do an explanation with an embodiment:
Use existing plate shaped light diffusing sheet with the UV resin in incident light surface forming lens pillar, and compare with existing plate shaped light diffusing sheet.The lens pillar gap periods is that the radius-of-curvature of 0.2mm lens is 0.2mm, and distance is 30mm between fluorescent tube, and lens pillar equates that with the region area in the saturating border of no column width is all the staggered existence of 15mm, shown in Fig. 2 A.Cut into suitable shape after the moulding and be installed on straight-down negative cold-cathode tube backlight, the position of the centrally aligned fluorescent tube in lens pillar zone measures, and its result as shown in Figure 3.Transverse axis is a light intensity for the distance longitudinal axis, the dull and stereotyped diffuser plate of no lens pillar, and distribution of light intensity is more inhomogeneous on module, and can reach preferable diffusion effect and uniformity coefficient in the diffuser plate of surface forming lens.
The utility model can be adjusted the light diffusibleness by the change of lens pillar curvature and distribution, is different from the mode that tradition can only be adjusted the light diffusing agent addition, and new design can be better than traditional product on the degree of stability of product.More in addition, the diffusion effect of light diffusing agent does not have directivity, is the effect that presents irregular scattering, and uses the light of lens pillar diffusion can be designed to carry out scattering at certain direction.In the design of display, the deviser is provided more space, can be designed at different demands, improve the utilization factor of light.
Claims (10)
1, the luminous down straight aphototropism mode set structure of a kind of high evenness is characterized in that, comprising:
One reflector plate;
A plurality of light sources, it is positioned at the top of this reflector plate;
One light diffusing sheet, it is the top in these a plurality of light sources, and the plane of incidence surface of this light diffusing sheet and these a plurality of light source adjacency has a plurality of lens pillars, and the spacing of these a plurality of light sources is S, then the spacing of this lens pillar is S/2;
One prismatic lens, it is positioned at the top of this light diffusing sheet; And
One panel, it is positioned at the top of this prismatic lens.
2, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 1 is characterized in that, these a plurality of light sources are cold cathode fluorescent lamp.
3, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 1 is characterized in that this light diffusing sheet includes a plurality of light diffusing agents.
4, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 1 is characterized in that, the structure on the exit facet surface of this light diffusing sheet is equal to the lens pillar on this plane of incidence surface.
5, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 1 is characterized in that, this light diffusing sheet is selected from one of them of acryl resin, epoxy resin, PU, transparent heat hardening resin or uv-hardening resin.
6, the luminous down straight aphototropism mode set structure of a kind of high evenness is characterized in that, comprising:
One reflector plate;
A plurality of light sources, it is positioned at the top of this reflector plate;
One light diffusing sheet, it is the top in these a plurality of light sources, and this light diffusing sheet has a plurality of lens pillars with the plane of incidence surface of these a plurality of light source adjacency, the curvature distribution of these a plurality of lens pillars is incremented to the middle of this first light source and a secondary light source from one first light source for the curvature minimum value, curvature is maximal value, curvature is decremented to this secondary light source then, and curvature is minimum value;
One prismatic lens, it is positioned at the top of this light diffusing sheet; And
One panel, it is positioned at the top of this prismatic lens.
7, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 6 is characterized in that, these a plurality of light sources are cold cathode fluorescent lamp.
8, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 6 is characterized in that this light diffusing sheet includes a plurality of light diffusing agents.
9, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 6 is characterized in that, the structure on the exit facet surface of this light diffusing sheet is equal to the lens pillar on this plane of incidence surface.
10, the luminous down straight aphototropism mode set structure of high evenness as claimed in claim 6 is characterized in that, this light diffusing sheet is selected from one of them of acryl resin, epoxy resin, PU, transparent heat hardening resin or uv-hardening resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420073165 CN2725938Y (en) | 2004-07-19 | 2004-07-19 | Direct falling type backlight module tructure of high uniformity illuminating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420073165 CN2725938Y (en) | 2004-07-19 | 2004-07-19 | Direct falling type backlight module tructure of high uniformity illuminating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2725938Y true CN2725938Y (en) | 2005-09-14 |
Family
ID=35040651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420073165 Expired - Lifetime CN2725938Y (en) | 2004-07-19 | 2004-07-19 | Direct falling type backlight module tructure of high uniformity illuminating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2725938Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384966B (en) * | 2006-02-17 | 2012-10-10 | 卡尔蔡司Smt有限责任公司 | Illumination system for a microlithographic projection exposure apparatus |
| CN103672568A (en) * | 2012-09-04 | 2014-03-26 | 展晶科技(深圳)有限公司 | Direct type backlight module |
| CN104766555A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indication board |
| CN104766557A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indication board |
| CN104763963A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indicator light |
| CN104766556A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Indicator light for emergency exit |
| TWI504948B (en) * | 2011-10-21 | 2015-10-21 | Hon Hai Prec Ind Co Ltd | Light guide plate and light emitting device having same |
| CN107676739A (en) * | 2017-10-01 | 2018-02-09 | 深圳市普耐光电科技有限公司 | A kind of light-passing board and panel light |
| CN108302387A (en) * | 2017-09-28 | 2018-07-20 | 敦南科技（无锡）有限公司 | A kind of ultraviolet source gain module |
| CN108594527A (en) * | 2018-04-27 | 2018-09-28 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN110174678A (en) * | 2018-02-20 | 2019-08-27 | 欧姆龙株式会社 | Object detection device |
| WO2020237956A1 (en) * | 2019-05-27 | 2020-12-03 | 惠州市华星光电技术有限公司 | Direct type blacklight module and liquid crystal display device |
-
2004
- 2004-07-19 CN CN 200420073165 patent/CN2725938Y/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799079B (en) * | 2006-02-17 | 2015-09-30 | 卡尔蔡司Smt有限责任公司 | For the irradiation system of microlithographic projection exposure apparatus |
| CN102799079A (en) * | 2006-02-17 | 2012-11-28 | 卡尔蔡司Smt有限责任公司 | Illumination system for a microlithographic projection exposure apparatus |
| CN101384966B (en) * | 2006-02-17 | 2012-10-10 | 卡尔蔡司Smt有限责任公司 | Illumination system for a microlithographic projection exposure apparatus |
| TWI504948B (en) * | 2011-10-21 | 2015-10-21 | Hon Hai Prec Ind Co Ltd | Light guide plate and light emitting device having same |
| CN103672568A (en) * | 2012-09-04 | 2014-03-26 | 展晶科技(深圳)有限公司 | Direct type backlight module |
| CN104766557A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indication board |
| CN104766556A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Indicator light for emergency exit |
| CN104763963A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indicator light |
| CN104766555A (en) * | 2014-01-03 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Emergency exit indication board |
| CN104766555B (en) * | 2014-01-03 | 2019-10-15 | 深圳市海洋王照明工程有限公司 | Emergency exit sign board |
| CN108302387A (en) * | 2017-09-28 | 2018-07-20 | 敦南科技（无锡）有限公司 | A kind of ultraviolet source gain module |
| CN108302387B (en) * | 2017-09-28 | 2024-03-22 | 敦南科技（无锡）有限公司 | Ultraviolet light source gain module |
| CN107676739A (en) * | 2017-10-01 | 2018-02-09 | 深圳市普耐光电科技有限公司 | A kind of light-passing board and panel light |
| CN107676739B (en) * | 2017-10-01 | 2023-06-27 | 深圳市普耐科技有限公司 | Light-transmitting plate and panel light |
| CN110174678A (en) * | 2018-02-20 | 2019-08-27 | 欧姆龙株式会社 | Object detection device |
| CN108594527A (en) * | 2018-04-27 | 2018-09-28 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN108594527B (en) * | 2018-04-27 | 2021-01-26 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2020237956A1 (en) * | 2019-05-27 | 2020-12-03 | 惠州市华星光电技术有限公司 | Direct type blacklight module and liquid crystal display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101118337B (en) | Optical plate and method for making same and back light module unit using same | |
| CN101738649B (en) | Composite optical film structure with multiple coatings | |
| CN2862089Y (en) | Light conducting board and back light module unit | |
| US7213936B2 (en) | Structure of direct type backlight module with high uniform emitting light | |
| CN2725938Y (en) | Direct falling type backlight module tructure of high uniformity illuminating | |
| CN1773345A (en) | Light conducting plate and back light module | |
| CN1524171A (en) | Lighting device for non-emissive displays | |
| CN1779518A (en) | Light-conducting board and backlight mould set | |
| CN101630028A (en) | Compound type diffusion plate structure, backlight module and liquid crystal display | |
| CN102620193A (en) | Sectional light emitting diode (LED) backlight module and liquid crystal display device | |
| CN101359066A (en) | Microstructure multifunction optical film diaphragm | |
| CN201218442Y (en) | Backlight module and LCD device containing the same | |
| CN101561116A (en) | Light guide plate, backlight module and display device | |
| CN102207566B (en) | Prism sheet, back light module unit with prism sheet and liquid crystal display (LCD) device | |
| JP2004022344A (en) | Surface light source device and liquid crystal display device | |
| CN202469747U (en) | Sidelight-type backlight module and display device | |
| CN202330747U (en) | Prism sheet, backlight module with prism sheet, and liquid crystal display device | |
| TWI378299B (en) | Light module with high collimation emitting property | |
| TWM409450U (en) | Light guide plate with inner laser engraving | |
| JP2004045645A (en) | Surface light source device and liquid crystal display device | |
| CN202432359U (en) | Liquid crystal display (LCD) backlight module and liquid crystal display module | |
| KR100977272B1 (en) | Light panel with light diffusion particles | |
| CN201237102Y (en) | Side light type back light module unit | |
| CN102444835A (en) | Straight-down type backlight module and liquid crystal display module | |
| CN1566994A (en) | Mean optical module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140719 Granted publication date: 20050914 |