CN105137652A - Diffuser plate, backlight module, and display device - Google Patents
Diffuser plate, backlight module, and display device Download PDFInfo
- Publication number
- CN105137652A CN105137652A CN201510427880.5A CN201510427880A CN105137652A CN 105137652 A CN105137652 A CN 105137652A CN 201510427880 A CN201510427880 A CN 201510427880A CN 105137652 A CN105137652 A CN 105137652A
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- China
- Prior art keywords
- diffuser plate
- light
- backlight module
- concave inward
- light source
- 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.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
Abstract
The invention provides a diffuser plate, a backlight module, and a display device, and belongs to the technical field of display, and solves problems that existing light mixing distance H increasing would correspondingly increase thickness of the backlight module, result in integrated thickness of a display device which uses the backlight module increased and light loss through the diffuser plate is relatively high, and brightness of a complete device is difficult to ensure. The diffuser plate comprises a plurality of concave structures on the light entering surface of the diffuser plate. The surface of the concave structure is provided with a reflective layer. The reflective layer is used to reflect at least part of light rays in the light rays emitted by a received light source. The diffuser plate and the backlight module can be used for a liquid crystal display device, a digital photo frame, electronic paper, a mobile phone, and other electronic device.
Description
Technical field
The invention belongs to display technique field, be specifically related to a kind of diffuser plate, backlight module, display device.
Background technology
Backlight module is one of significant components of liquid crystal display, can provide sufficient brightness and the light source be evenly distributed, make the normal show image of liquid crystal display energy for liquid crystal display.
At present, the display technique of liquid crystal display has been tending towards ripe, especially there has also been very large development at the design aspect of backlight module.Backlight module, except being applied in the liquid crystal indicator such as liquid crystal display, liquid crystal TV set, can also provide light source for display device such as digital album (digital photo frame), Electronic Paper, mobile phones.
Backlight module is divided into side entrance back module and down straight aphototropism mode set according to the position difference of light source.Fig. 1 shows a kind of structure of backlight module of prior art, as shown in Figure 1, this backlight module is down straight aphototropism mode set, the backboard 7 that this backlight module comprises diffuser plate 1 and is oppositely arranged with diffuser plate 1, the medial surface of backboard 7 is evenly provided with multiple light source 3, the exiting surface of light source 3 is towards the incidence surface of diffuser plate 1.The problem that Light distribation that is that cause is uneven in order to the lighting angle overcoming light source 3 is little, existing solution for evenly to arrange multiple outer male structure 2 on diffuser plate 1, to play the effect increasing mixed light degree.
But inventor finds, in prior art, at least there are the following problems: multiple outer male structure 2 also can increase light mixing distance H while increase mixed light degree, and increase light mixing distance H can the thickness of corresponding increase backlight module, cause the integral thickness of the display device using this backlight module to increase, lightening requirement cannot be met; After diffuser plate, the loss of light is comparatively large simultaneously, is difficult to ensure complete machine brightness.
Summary of the invention
The present invention is directed to existing increase light mixing distance H can the thickness of corresponding increase backlight module, cause use this backlight module display device integral thickness increase and after diffuser plate the loss of light larger, be difficult to the problem ensureing complete machine brightness, a kind of diffuser plate, backlight module, the display device that can solve at least one the problems referred to above are provided.
The technical scheme that solution the technology of the present invention problem adopts is to provide a kind of diffuser plate, the incidence surface of described diffuser plate is provided with multiple concave inward structure, the surface of described concave inward structure is provided with reflector layer, and at least part of light that described reflector layer is used in the light launched by the light source received reflects.
Preferably, described concave inward structure is arranged on the incidence surface of described diffuser plate uniformly.
Preferably, described concave inward structure is the structure of falling V, domes or square structure.
Preferably, described reflector layer adopts the material of material based on acryl resin to make.
Preferably, the material of described reflector layer is transparent material.
Preferably, the thickness of described reflector layer is 10 ~ 30 μm.
Further preferably, the thickness of described reflector layer is 20 μm.
As another embodiment, the invention provides a kind of backlight module, comprise the backboard, reflector plate, light source and the diffuser plate that set gradually, described diffuser plate is the diffuser plate described in above-mentioned any one, and described reflector plate is for receiving the light of described diffuser plate reflection.
As another embodiment, the invention provides a kind of display device, comprise display panel and above-mentioned backlight module.
In diffuser plate of the present invention, the incidence surface of diffuser plate is provided with multiple concave inward structure, and the surface of concave inward structure is provided with reflector layer, by the light that will send at each light source reflector layer through the concave inward structure of diffuser plate, reduce diffuser plate self to the absorption of light, by a part of light reflection on reflector plate, after such light is recycled, again propagate to liquid crystal display direction, improve the utilization factor of light source; Meanwhile, concave inward structure synchronously can also reduce light mixing distance, namely reduces the distance between diffuser plate and backboard, complete machine thickness is reduced, product thin type, also can realize light source backlight module Region control; Utilize the light that light source sends to greatest extent, improve the light extraction efficiency of light source, also can reduce the quantity of light-source encapsulation used, reduce the heat that light source produces; Also reduce the cost of complete machine simultaneously.
Diffuser plate of the present invention and backlight module are applicable to the electronic equipments such as plurality of liquid crystals display device, digital album (digital photo frame), Electronic Paper, mobile phone.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing backlight module;
Fig. 2 is the structural representation of the diffuser plate of embodiments of the invention 2;
Fig. 3 is the structural representation of the backlight module of embodiments of the invention 3;
Wherein, Reference numeral is: 1, diffuser plate; 2, outer male structure; 3, light source; 4, concave inward structure; 5, reflector layer; 6, reflector plate; 7, backboard.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1:
The present embodiment provides a kind of diffuser plate, and the incidence surface of diffuser plate is provided with multiple concave inward structure, and the surface of concave inward structure is provided with reflector layer, and at least part of light that reflector layer is used in the light launched by the light source received reflects.
The diffuser plate of the present embodiment, its incidence surface is provided with multiple concave inward structure, and the surface of concave inward structure is provided with reflector layer, by the light that will send at each light source reflector layer through the concave inward structure of diffuser plate, reduce diffuser plate self to the absorption of light, by a part of light reflection on reflector plate, after such light is recycled, again propagate to liquid crystal display direction, improve the utilization factor of light source; Meanwhile, concave inward structure synchronously can also reduce light mixing distance, namely reduces the distance between diffuser plate and backboard, complete machine thickness is reduced, product thin type, also can realize light source backlight module Region control; Utilize the light that light source sends to greatest extent, improve the light extraction efficiency of light source, improve complete machine brightness, also can reduce the quantity of light-source encapsulation used, reduce the heat that light source produces.
Embodiment 2:
As shown in Figure 2, the present embodiment provides a kind of diffuser plate, and the incidence surface of diffuser plate is provided with multiple concave inward structure, and the surface of concave inward structure is provided with reflector layer, and at least part of light that reflector layer is used in the light launched by the light source received reflects.
The incidence surface of diffuser plate 1 is provided with multiple concave inward structure 4, and the surface of concave inward structure 4 is provided with reflector layer 5.
Concave inward structure 4 is arranged on the incidence surface of diffuser plate 1 uniformly.Why so arrange, the reflection ray of each concave inward structure 4 corresponding region can be made even, some regional reflex light can not be caused strong, other regional reflex light are weak, therefore, incidence surface concave inward structure 4 being arranged on uniformly diffuser plate 1 better can ensure the homogeneity of reflection ray.
Preferably, concave inward structure 4 is the structure of falling V, domes or square structure.In the present embodiment, be described for the structure of falling V for concave inward structure 4.Why so arrange, be that the reflection of the light sent for light source due to the concave inward structure 4 of rule is more regular, multiple reflections can not be carried out in concave inward structure 4.
Certainly, the shape of concave inward structure 4 is not limited thereto, and also can carry out many changes, and the shape of such as concave inward structure 4 can also be trapezium structure, the structure of falling U etc.
Preferably, reflector layer 5 adopts the material of material based on acryl resin to make.
Preferably, the material of reflector layer 5 is transparent material.Why reflector layer 5 is arranged to transparence, that the some light launched due to the reflector layer 5 pairs of light sources of the concave inward structure 4 at diffuser plate 1 is when reflecting, some light is also had to need through diffuser plate 1, be emitted to the exiting surface of diffuser plate 1, therefore, transparent reflector layer 5 be more conducive to light through, and then be conducive to improving the transmitance of diffuser plate 1.
Preferably, the thickness of reflector layer 5 is 10 ~ 30 μm.Why so arrange, be due to the thickness in reflection horizon 5 unsuitable after, can reduce the transmitance of light, but also should not be excessively thin, as long as thickness is evenly, further preferably, the thickness of reflector layer 5 is 20 μm, and thickness evenly can obtain better reflecting effect.
Preferably, spray gun can be adopted to prepare reflection horizon 5.When preparing reflection horizon 5, should notice that the distance spraying muzzle and working surface (i.e. the surface of concave inward structure 4) should not be excessively near, keep the distance of about 20cm best, air pressure controls as 0.3MPa, and atomization is reached maximum.When ensureing colouring power, the reflecting effect that thin uniform coating obtains is best.
Embodiment 3:
The present embodiment provides a kind of backlight module, comprises the backboard, reflector plate, light source and the diffuser plate that set gradually, and described diffuser plate is the diffuser plate described in above-described embodiment 1 or embodiment 2, and described reflector plate is for receiving the light of described diffuser plate reflection.
As shown in Figure 3, backlight module comprises the backboard 7 be oppositely arranged, and the surface relative to diffuser plate 1 is provided with reflector plate 6 with backboard 7, reflector plate 6 is provided with light source 3, the incidence surface of diffuser plate 1 is provided with multiple concave inward structure 4, and the surface of concave inward structure is provided with reflector layer 5.
In the present embodiment, light source 3 is light emitting diode (LightEmittingDiode, LED) light source, and certainly, the type of light source 3 is not limited thereto, and also can carry out many changes, not repeat them here.
The light reflection emitted by light source 3 that receives on reflector plate 6, after light so just can be made to be recycled, is propagated to liquid crystal display (not shown) direction, thus is improve the utilization factor of light source by reflection horizon 5 again.
The backlight module of the present embodiment, comprise diffuser plate 1, the incidence surface of this diffuser plate 1 is provided with multiple concave inward structure 4, and the surface of concave inward structure 4 is provided with reflector layer 5, by the light that will send at each light source when the reflector layer 5 of the concave inward structure 4 of diffuser plate 1, reduce diffuser plate 1 self to the absorption of light, by a part of light reflection on reflector plate, after such light is recycled, again propagates to liquid crystal display direction, improve the utilization factor of light source; Meanwhile, concave inward structure synchronously can also reduce light mixing distance, complete machine thickness is reduced, namely reduces the distance between diffuser plate and backboard, product thin type, also can realize light source backlight module Region control; Utilize the light that light source sends to greatest extent, improve the light extraction efficiency of light source, improve complete machine brightness, also can reduce the quantity of light-source encapsulation used, reduce the heat that light source produces.
Embodiment 4:
Present embodiments provide a kind of display device, it comprises the backlight module of display panel and above-described embodiment 3.Described display device can be: any product or parts with Presentation Function such as display panels, Electronic Paper, oled panel, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
Compared to prior art, the display device of the present embodiment, even light mixing and light mixing distance is short, effectively reduce complete machine thickness, product thickness is thinner, simultaneously because quantity of light source reduces, therefore, it is possible to reduce costs.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (9)
1. a diffuser plate, is characterized in that, the incidence surface of described diffuser plate is provided with multiple concave inward structure, and the surface of described concave inward structure is provided with reflector layer, and at least part of light that described reflector layer is used in the light launched by the light source received reflects.
2. diffuser plate according to claim 1, is characterized in that, described concave inward structure is arranged on the incidence surface of described diffuser plate uniformly.
3. diffuser plate according to claim 1, is characterized in that, described concave inward structure is the structure of falling V, domes or square structure.
4. diffuser plate according to claim 1, is characterized in that, described reflector layer adopts the material of material based on acryl resin to make.
5. the diffuser plate according to claim 1 or 4, is characterized in that, the material of described reflector layer is transparent material.
6. diffuser plate according to claim 1, is characterized in that, the thickness of described reflector layer is 10 ~ 30 μm.
7. diffuser plate according to claim 6, is characterized in that, the thickness of described reflector layer is 20 μm.
8. a backlight module, is characterized in that, comprises the backboard, reflector plate, light source and the diffuser plate that set gradually, and described diffuser plate is the diffuser plate described in claim 1 to 7 any one, and described reflector plate is for receiving the light of described diffuser plate reflection.
9. a display device, is characterized in that, comprises display panel and backlight module according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427880.5A CN105137652A (en) | 2015-07-20 | 2015-07-20 | Diffuser plate, backlight module, and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427880.5A CN105137652A (en) | 2015-07-20 | 2015-07-20 | Diffuser plate, backlight module, and display device |
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| Publication Number | Publication Date |
|---|---|
| CN105137652A true CN105137652A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510427880.5A Pending CN105137652A (en) | 2015-07-20 | 2015-07-20 | Diffuser plate, backlight module, and display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353561A (en) * | 2015-12-11 | 2016-02-24 | 友达光电股份有限公司 | Light source device |
| CN109061945A (en) * | 2018-08-23 | 2018-12-21 | 厦门天马微电子有限公司 | Backlight module and display device |
| WO2020238178A1 (en) * | 2019-05-30 | 2020-12-03 | 华为技术有限公司 | Backlight module, display screen and mobile terminal |
| CN113534537A (en) * | 2021-07-28 | 2021-10-22 | 南京京东方显示技术有限公司 | Backlight module and display device |
| CN114114752A (en) * | 2021-12-01 | 2022-03-01 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN114442370A (en) * | 2021-12-31 | 2022-05-06 | 厦门天马微电子有限公司 | Backlight module and display device |
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| KR20090090030A (en) * | 2008-02-20 | 2009-08-25 | 희성전자 주식회사 | Direct lighting type backlight unit using led lamps |
| CN201297576Y (en) * | 2008-10-16 | 2009-08-26 | 光群雷射科技股份有限公司 | Embedded light guide device |
| CN201836814U (en) * | 2010-08-13 | 2011-05-18 | 深圳安嵘光电产品有限公司 | Two-in-one light guide plate with diffusion function and backlight module employing same |
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| CN101344674A (en) * | 2007-07-12 | 2009-01-14 | 颖台科技股份有限公司 | Optical film and manufacturing method thereof, and backlight module using the same |
| KR20090090030A (en) * | 2008-02-20 | 2009-08-25 | 희성전자 주식회사 | Direct lighting type backlight unit using led lamps |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353561A (en) * | 2015-12-11 | 2016-02-24 | 友达光电股份有限公司 | Light source device |
| CN109061945A (en) * | 2018-08-23 | 2018-12-21 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN109061945B (en) * | 2018-08-23 | 2021-09-17 | 厦门天马微电子有限公司 | Backlight module and display device |
| WO2020238178A1 (en) * | 2019-05-30 | 2020-12-03 | 华为技术有限公司 | Backlight module, display screen and mobile terminal |
| US11320696B2 (en) | 2019-05-30 | 2022-05-03 | Huawei Technologies Co., Ltd. | Backlight module, display, and mobile terminal |
| CN113534537A (en) * | 2021-07-28 | 2021-10-22 | 南京京东方显示技术有限公司 | Backlight module and display device |
| CN114114752A (en) * | 2021-12-01 | 2022-03-01 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN114114752B (en) * | 2021-12-01 | 2024-03-19 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN114442370A (en) * | 2021-12-31 | 2022-05-06 | 厦门天马微电子有限公司 | Backlight module and display device |
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Application publication date: 20151209 |
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