CN106526973A - Straight down type backlight module and liquid crystal display device - Google Patents
Straight down type backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN106526973A CN106526973A CN201611270947.XA CN201611270947A CN106526973A CN 106526973 A CN106526973 A CN 106526973A CN 201611270947 A CN201611270947 A CN 201611270947A CN 106526973 A CN106526973 A CN 106526973A
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- China
- Prior art keywords
- angle
- micro
- structural
- mode set
- down straight
- 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
-
- 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
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a straight down type backlight module and a liquid crystal display device. The backlight module comprises multiple LED lights, an optical membrane set and an angle selecting membrane, wherein the LED lights are arranged below the optical membrane set, the angle selecting membrane is arranged between the LED lights and the optical membrane set, and the angle selecting membrane is used for conducting transmission on an incident ray or reflecting the incident ray according to an incident angle of the incident ray. According to the straight down type backlight module and the liquid crystal display device, by arranging the angle selecting membrane which is used for conducting transmission on the incident ray or reflecting the incident ray according to the incident angle of the incident ray, thus the purposes that part of light ray is subjected to light transmission, and part of the light ray is reflected out at a place of the angle selecting membrane are achieved, therefore, crosstalk formed among the LED lights is prevented, and a contrast ratio is improved.
Description
Technical field
The present invention relates to field of liquid crystal display, more particularly to a kind of down straight aphototropism mode set and liquid crystal indicator.
Background technology
To realize high dynamic HDR (high dynamic illumination is rendered) multi-section display (Local Dimming) of LCD TV, can adopt
Realized with modes such as straight-down negative and side entering types.Traditional straight-down negative realizes that HDR is shown by LED is fixed on backboard,
LED can carry out subregion and light, a region of the LED correspondence display floater in each region, by drive circuit pair
Subregion LED is controlled, and the subregion for being capable of achieving HDR shows.But as the hot spot of LED is excessive, and subregion is relatively
It is little, crosstalk is formed, HDR effects are affected.If forming square focus spot using square-lens in addition, using square focus spot correspondence subregion
If again cause the difficult design of lens, while the mixed light between square focus spot become affect the key of backlight module uniformity because
Element, it is difficult to control.Therefore, a kind of achievable multi-section display and the simple backlight module of design structure are designed, becomes current needs
The technical problem of solution.
The content of the invention
The main object of the present invention is to provide a kind of down straight aphototropism mode set and liquid crystal indicator, it is intended to realize that subregion shows
Show, reduce the crosstalk between LED, improve contrast.
For achieving the above object, down straight aphototropism mode set proposed by the present invention, the backlight module include multiple LEDs,
Optical diaphragm group and angle Selection diaphragm, multiple LEDs are arranged at below the optical diaphragm group, the angle Selection
, between the LED and the optical diaphragm group, the angle Selection diaphragm is for entering according to incident ray for diaphragm arrangement
Incident ray described in firing angle degree transmission or reflection.
Preferably, the angle Selection diaphragm includes substrate and setting micro-structural on the substrate, micro- knot
Structure is arranged on the exiting surface of the angle Selection diaphragm.
Preferably, the micro-structural is rectangular pyramid.
Preferably, the micro-structural is tetrahedron.
Preferably, the micro-structural is cone.
Preferably, the micro-structural is semiellipsoid
Preferably, the micro-structural is made up of the method for imprinting UV glue.
Preferably, the material of the substrate is PC films or PET film or glass.
Preferably, the area of the angle Selection membrane covered is identical with the area that the optical diaphragm group is covered.
The present invention also provides a kind of liquid crystal indicator, and the liquid crystal indicator includes direct-type backlight as above
Module.
In technical solution of the present invention, backlight module described in the backlight module include multiple LEDs, optical diaphragm group and
Angle Selection diaphragm, multiple LEDs are arranged at below the optical diaphragm group, and the angle Selection diaphragm arrangement is in described
Between LED and the optical diaphragm group, the angle Selection diaphragm is for according to the incident angle of incident ray transmission or anti-
Penetrate the incident ray.The present invention passes through the angle for being provided for the incident angle transmission or reflection incident ray according to incident ray
Degree selecting membrane, so as to realize transmiting away some light, some light is reflected away from angle Selection diaphragm, Jin Erfang
Crosstalk is only formed between LED, contrast is improve.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
The structural representation of down straight aphototropism mode set in Fig. 1 embodiment of the present invention；
Fig. 2 is the index path in the embodiment of the present invention；
Fig. 3 is beam speckle contrast's figure of the hot spot and angled selecting membrane of non-angular selecting membrane in the embodiment of the present invention.
Drawing reference numeral explanation：
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In the relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc. are explained, if should
When particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In describing the invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should be interpreted broadly,
For example, " fixation " can be fixedly connected, or be detachably connected, or integral；Can be mechanically connected, or
Electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection or two of two element internals
The interaction relationship of individual element, unless otherwise clearly restriction.For the ordinary skill in the art, can basis
Concrete condition understands above-mentioned term concrete meaning in the present invention.
In addition, the technical scheme between each embodiment of the invention can be combined with each other, but must be general with this area
Logical technical staff can be implemented as basis, will be understood that when the combination appearance of technical scheme is conflicting or cannot realize this
The combination of technical scheme is not present, also not within the protection domain of application claims.
The present invention proposes a kind of down straight aphototropism mode set.
Fig. 1-Fig. 3 is refer to, in an embodiment of the present invention, the down straight aphototropism mode set 10 includes multiple LEDs 2, light
Diaphragm group 1 and angle Selection diaphragm 3 are learned, multiple LEDs 2 are arranged at below the optical diaphragm group 1, the angle choosing
Select diaphragm 3 to be arranged between the LED 2 and the optical diaphragm group 1, the angle Selection diaphragm 3 is for according to incident light
Incident ray described in the incident angle transmission or reflection of line.
In the present embodiment, by an angle Selection diaphragm 3, the angle Selection film are arranged in the backlight module 10
Piece 3 can be used for incident ray described in transmission or reflection.Specifically, the angle Selection diaphragm 3 is arranged at the LED 2 and institute
State between optical diaphragm group 1, wherein the optical diaphragm group 1 is blooming piece conventional in backlight module 10, such as diffusion sheet, increasing
Mating plate etc., specifically the setting of the optical diaphragm group 1 and effect here differ and one repeat.It should be noted that the angle
The incident ray that selecting membrane 3 can be projected specifically for the angle Selection according to incident ray in the present embodiment, so as to will not
The light of transmissive is reflected away, and is reduced the crosstalk between the light of outgoing between LED 2, and then is improved contrast, realizes
Multi-section display on display floater.It should be noted that luminescence chip is blue chip in the LED 2 in the present embodiment.
Further, the angle Selection diaphragm 3 includes substrate 31 and the micro-structural 32 being arranged on the substrate 31,
The micro-structural 32 is arranged on the exiting surface of the angle Selection diaphragm 3.In the present embodiment, by the angle Selection diaphragm
The micro-structural of one layer of achievable transmission or reflection incident ray is set realizing the selection of light, specifically the micro-structural on 3
Including several micro-structurals 32 for carrying out incident ray selection.It should be noted that by the angle of incident ray in the present embodiment
Angle excessive light is mainly reflected back by degree transmission or reflection incident ray by micro-structural 32, and wherein angle is excessive
Refer to the angle that can not be passed through from the micro-structural 32.Therefore, micro-structural 32 herein can be to be set as needed
Meter, it is designed specifically according to the spacing of LED 2.According to the spacing of LED 2, calculate needs and be all-trans
The critical angle of the light penetrated, so as to by the micro-structural 32 be designed to can the angle more than critical angle light it is all anti-
The structure being shot out.
It should be noted that the micro-structural is made up of the method for imprinting UV glue, by applying in the angle Selection diaphragm 3
One layer of UV glue is covered, the transmission or reflection of incident ray is carried out.Wherein, the micro-structural 32 is made of to be imprinted with the UV glue
's.Here it may be mentioned that the shape of the micro-structural 32 can be rectangular pyramid or tetrahedron or semielliptical shape or
Cone.In the present embodiment, will be illustrated with the micro-structural 32 of rectangular pyramid, illustrate the design of micro-structural 32, and
The process of the angle of transmissive is selected according to the incident angle of light.Specifically, the design of the micro-structural 32 and the LED
The distance between 2 is relevant.
It is assumed that spacing between LED 2 is 40mm, the distance of the LED 2 to angle Selection diaphragm 3 is 20mm, root
It is 45 degree that condition enters light to 3 angle of angle Selection diaphragm accordingly, can calculate entrance according to the refractive index of angle Selection diaphragm 3
The angle of the emergent light of angle Selection diaphragm 3.In order to allow the light of wide-angle can not out, we will allow the light more than 45 degree to exist
There is total reflection in the structure of rectangular pyramid, the size of the angle of total reflection can be calculated according to the refractive index of material.Therefore,
The angle of adjustment rectangular pyramid structure, can make the incident light on 45 degree of angles that total reflection occurs, it is impossible to enough front outgoing, and be less than
45 degree of light normally can go out to shoot out, and lift contrast with this.It is assumed that the refractive index of material is 1.5, then the angle of total reflection
It it is 42 degree, according to the angle of emergent light just now, two base angles that can extrapolate rectangular pyramid isosceles triangle are 17 degree.With
Upper is only to illustrate that the structure design and angle Selection diaphragm 3 of the micro-structural 32 can be projected according to the angle Selection of incident ray
The process of light, needs to be designed according to actual parameter in specific application process.
Further, the material of substrate 31 described in the present embodiment is PC films or PET film or glass.And the angle choosing
The area for selecting the covering of diaphragm 3 is identical with the area that the optical diaphragm group 1 is covered, to guarantee light energy that the LED 2 sends
Enough all emergent ray is made to be not in the phenomenons such as crosstalk through the selection of the angle Selection diaphragm 3.It should be noted that this
Backlight module 10 described in embodiment is down straight aphototropism mode set, and the usual side entrance back module is seldom related to local controlled light
Structure, so backlight module 10 described in the present embodiment is mainly used in the down straight aphototropism mode set.
The present invention also provides a kind of liquid crystal indicator, and the liquid crystal indicator includes backlight module as above
10.As this liquid crystal indicator employs whole technical schemes of above-mentioned all embodiments, therefore at least there is above-mentioned enforcement
All beneficial effects that the technical scheme of example is brought, this is no longer going to repeat them.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every at this
Under the design of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/it is used in indirectly which
The technical field of his correlation is included in the scope of patent protection of the present invention.
Claims (10)
1. a kind of down straight aphototropism mode set, it is characterised in that the backlight module include multiple LEDs, optical diaphragm group and
Angle Selection diaphragm, multiple LEDs are arranged at below the optical diaphragm group, and the angle Selection diaphragm arrangement is in described
Between LED and the optical diaphragm group, the angle Selection diaphragm is for according to the incident angle of incident ray transmission or anti-
Penetrate the incident ray.
2. down straight aphototropism mode set according to claim 1, it is characterised in that the angle Selection diaphragm include substrate with
And micro-structural on the substrate is set, the micro-structural is arranged on the exiting surface of the angle Selection diaphragm.
3. down straight aphototropism mode set according to claim 2, it is characterised in that the micro-structural is rectangular pyramid.
4. down straight aphototropism mode set according to claim 2, it is characterised in that the micro-structural is tetrahedron.
5. down straight aphototropism mode set according to claim 2, it is characterised in that the micro-structural is cone.
6. down straight aphototropism mode set according to claim 2, it is characterised in that the micro-structural is semiellipsoid.
7. the down straight aphototropism mode set according to any one of claim 2-6, it is characterised in that the micro-structural is by imprinting UV
The method of glue is made.
8. the down straight aphototropism mode set according to any one of claim 2-6, it is characterised in that the material of the substrate is
PC films or PET film or glass.
9. the down straight aphototropism mode set according to any one of claim 1-6, it is characterised in that the angle Selection diaphragm
The area that the area of covering is covered with the optical diaphragm group is identical.
10. a kind of liquid crystal indicator, it is characterised in that including direct-type backlight as claimed in any one of claims 1-9 wherein
Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611270947.XA CN106526973A (en) | 2016-12-30 | 2016-12-30 | Straight down type backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611270947.XA CN106526973A (en) | 2016-12-30 | 2016-12-30 | Straight down type backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106526973A true CN106526973A (en) | 2017-03-22 |
Family
ID=58336697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611270947.XA Pending CN106526973A (en) | 2016-12-30 | 2016-12-30 | Straight down type backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106526973A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102396A (en) * | 2017-05-03 | 2017-08-29 | 武汉华星光电技术有限公司 | A kind of backlight module of light guide plate and the application light guide plate |
| CN108873126A (en) * | 2018-06-26 | 2018-11-23 | 武汉华星光电技术有限公司 | A kind of optical diaphragm, backlight module and display device |
| WO2018214618A1 (en) * | 2017-05-22 | 2018-11-29 | 青岛海信电器股份有限公司 | Backlight module and liquid crystal display device |
| CN109638143A (en) * | 2018-11-06 | 2019-04-16 | 惠州市华星光电技术有限公司 | Quantum dot film and light emitting module |
| US10359557B2 (en) | 2017-05-03 | 2019-07-23 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Light guide plate having periodic microstructure configured on light emission surface and a light waveguide layer configured within transmission layer and backlight module having a collimation structure configured with a plurality of collimation-layer units and a plurality of collimation-optical-lens units to collimate light beams emitted from the light emission surface of the light guide plate |
| WO2022247941A1 (en) * | 2021-05-28 | 2022-12-01 | 海信视像科技股份有限公司 | Display device |
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| KR20120065752A (en) * | 2010-12-13 | 2012-06-21 | 엘지디스플레이 주식회사 | Liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107102396A (en) * | 2017-05-03 | 2017-08-29 | 武汉华星光电技术有限公司 | A kind of backlight module of light guide plate and the application light guide plate |
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| CN107102396B (en) * | 2017-05-03 | 2019-06-11 | 武汉华星光电技术有限公司 | A kind of light guide plate and the backlight module using the light guide plate |
| US10359557B2 (en) | 2017-05-03 | 2019-07-23 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Light guide plate having periodic microstructure configured on light emission surface and a light waveguide layer configured within transmission layer and backlight module having a collimation structure configured with a plurality of collimation-layer units and a plurality of collimation-optical-lens units to collimate light beams emitted from the light emission surface of the light guide plate |
| WO2018214618A1 (en) * | 2017-05-22 | 2018-11-29 | 青岛海信电器股份有限公司 | Backlight module and liquid crystal display device |
| CN108873126A (en) * | 2018-06-26 | 2018-11-23 | 武汉华星光电技术有限公司 | A kind of optical diaphragm, backlight module and display device |
| CN109638143A (en) * | 2018-11-06 | 2019-04-16 | 惠州市华星光电技术有限公司 | Quantum dot film and light emitting module |
| WO2022247941A1 (en) * | 2021-05-28 | 2022-12-01 | 海信视像科技股份有限公司 | Display device |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170322 |