CN105867028B - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN105867028B CN105867028B CN201610461535.8A CN201610461535A CN105867028B CN 105867028 B CN105867028 B CN 105867028B CN 201610461535 A CN201610461535 A CN 201610461535A CN 105867028 B CN105867028 B CN 105867028B
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- backlight module
- transmission region
- module according
- adjustable area
- substrate
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- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 239000000758 substrate Substances 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 21
- 239000004973 liquid crystal related substance Substances 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009365 direct transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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
- G02F1/133606—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
- G02F1/133603—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
- 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)
- Liquid Crystal (AREA)
Abstract
The present invention relates to field of display technology more particularly to a kind of backlight module and display devices.Backlight module includes underlay substrate and the coaming plate on underlay substrate, and coaming plate and underlay substrate, which enclose, to be set to form multiple slots, and light source is equipped in each slot, and the notch of each slot is equipped with controllable translucent construction, is additionally provided with liquid lens above controllable translucent construction；Controllable translucent construction includes transmission region and adjustable area；Under common view angle mode, adjustable area and the equal light transmission of transmission region；Under collimated back mode, transmission region light transmission, adjustable area is opaque；The focus of liquid lens coincides with transmission region.Backlight module provided by the invention can be compatible with common view angle mode and collimated back mode, and under collimated back mode backlight collimation it is high.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of backlight module and display devices.
Background technique
It is just in the industry cycle rising, and how to mention currently based on multiple views 3D display and diffraction the light splitting display of collimated back
It is also us in one of the problem captured for the good backlight of collimating effect.
The backlight module of liquid crystal display is generally made of LED, reflector plate, light guide plate, diffusion barrier and prism film at present, is led
Site micro-structure is arranged at the bottom of tabula rasa, can destroy total reflection of the side incident ray in light guide plate, goes out from light guide plate downside
After the light being mapped on reflector plate is reflected, the light of all directions diverging is presented, can not accomplish that all light are all substantially parallel
Collimated back.
Summary of the invention
(1) technical problems to be solved
Common view angle mode may be implemented the technical problem to be solved by the present invention is to how realizing backlight module both can also be with
The problem of realizing collimated back mode.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of backlight module, including underlay substrate and it is set to institute
The coaming plate on underlay substrate is stated, the coaming plate and the underlay substrate, which enclose, to be set to form multiple slots, is equipped with light in each slot
Source, the notch of each slot are equipped with controllable translucent construction, are additionally provided with liquid lens above the controllable translucent construction；It is described
Controllable translucent construction includes transmission region and adjustable area；Under common view angle mode, the adjustable area and transmission region are equal
Light transmission；Under collimated back mode, the transmission region light transmission, the adjustable area is opaque；The focus of the liquid lens
It coincides with the transmission region.
According to the present invention, the controllable translucent construction includes the upper polaroid set gradually, upper substrate, liquid crystal layer, lower base
Plate and down polaroid, are relatively set with first electrode group on the corresponding upper substrate of the transmission region and lower substrate, it is described can
It adjusts and is relatively set with second electrode group on the corresponding upper substrate in region and lower substrate.
According to the present invention, the voltage by adjusting the first electrode group and second electrode group makes corresponding region liquid crystal point
Son deflection, realizes the transmission region and the equal light transmission of adjustable area under common view angle mode；It is realized under collimated back mode
The adjustable area is opaque.
According to the present invention, the light source is LED light source.
According to the present invention, the light source includes LED chip and fluorescent glue, and the fluorescent glue is covered on the LED chip.
According to the present invention, the LED chip is arranged on underlay substrate.
According to the present invention, buffer layer is provided between the underlay substrate and the LED chip.
According to the present invention, the buffer layer is graphene layer.
According to the present invention, two adjacent slots share a coaming plate.
According to the present invention, the wall surface of the coaming plate is equipped with high reflecting coating.
The present invention also provides a kind of display devices, including above-mentioned backlight module.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the following advantages that compared with prior art：Backlight provided in an embodiment of the present invention
Mould group can realize common view angle and collimated back both of which by the control to controllable translucent construction and liquid lens,
And light is all projected by the focal point of liquid lens through liquid lens when realizing collimated back mode, all injections
Light is directional light, ensure that the high collimation of light.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of backlight module under common view angle mode provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of backlight module under common view angle mode provided in an embodiment of the present invention；
Fig. 3 is the cross-sectional view of controllable translucent construction provided in an embodiment of the present invention；
Fig. 4 is the top view of controllable translucent construction provided in an embodiment of the present invention.
In figure：1：Underlay substrate；2：Coaming plate；21：High reflecting coating；3：Slot；4：Light source；41：LED chip；42：Fluorescence
Glue；43：Buffer layer；5：Controllable translucent construction；51：Transmission region；52：Adjustable area；501：Upper polaroid；502：Upper substrate；
503：Liquid crystal layer；504：Lower substrate；505：Down polaroid；6：Liquid lens；61：Spacer material.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, a kind of backlight module provided in an embodiment of the present invention, including underlay substrate 1 and be set to lining
Coaming plate 2 on substrate 1, specifically, the underlay substrate 1 in the present embodiment are preferably glass substrate.Coaming plate 2 and underlay substrate 1
It encloses and sets to form multiple slots 3, light source 4 is equipped in each slot 3, the notch of each slot 3 is equipped with controllable translucent construction 5, controllable light transmission
The top of structure 5 is additionally provided with liquid lens 6.Controllable translucent construction 5 includes transmission region 51 and adjustable area 52；In common view angle
Under mode, adjustable area 52 and the equal light transmission of transmission region 51；Under collimated back mode, 51 light transmission of transmission region, adjustable area
52 is opaque；The focus of liquid lens 6 coincides with transmission region 51.Those skilled in the art as needed can choose liquid
The type of lens 6, the liquid lens 6 selected in the present embodiment are the liquid lens using electrowetting principle.When liquid lens 6
When on-load voltage is zero, liquid lens 6 is equivalent to common glass-encapsulated layer, controls the adjustable area of controllable translucent construction 5 at this time
Domain 52 and the equal light transmission of transmission region 51, the light that light source 4 is issued can be projected directly in common view angle, and backlight module is in general
Logical field-of-view mode.When the on-load voltage of liquid lens 6 is adjusted to setting value (setting value is not zero), liquid lens 6 plays convex
The effect of lens, the adjustable area 52 for controlling controllable translucent construction 5 at this time is opaque, and the light that light source 4 is issued is merely through saturating
Light region 51 is mapped on liquid lens 6, since transmission region 51 and the focus of liquid lens 6 coincide, is irradiated to liquid lens 6
On light projected in the form of directional light, backlight module is in collimated back mode.Backlight mould provided in an embodiment of the present invention
Group can realize common view angle and collimated back both of which by the control to controllable translucent construction 5 and liquid lens 6,
And light is all projected by the focal point of liquid lens 6 through liquid lens 6 when realizing collimated back mode, all injections
Light be directional light, ensure that the high collimation of light.
Further, in this embodiment controllable translucent construction 5 include set gradually upper polaroid 501, upper substrate
502, liquid crystal layer 503, lower substrate 504 and down polaroid 505, on the corresponding upper substrate 502 of transmission region 51 and lower substrate 504
It is relatively set with first electrode group, is relatively set with second electrode on the corresponding upper substrate 502 of adjustable area 52 and lower substrate 504
Group.By adjusting the voltage of first electrode group and second electrode group corresponding region liquid crystal molecule is deflected, realization is commonly regarding
Transmission region 51 and the equal light transmission of adjustable area 52 under angle mould formula；Realize that adjustable area 52 is opaque under collimated back mode.Tool
Body, according to the difference that liquid crystal molecule is arranged, there are two different situations for the control of first electrode group and second electrode group：The
It is setting value that the first electrode group of transmission region 51, which is always maintained at voltage, in a kind of situation, to drive the liquid crystal of transmission region 51
Molecule deflects, and realizes that transmission region 51 continues light transmission, the voltage of the second electrode group of adjustable area 52 can when being setting value
52 light transmission of region is adjusted, adjustable area 52 is opaque when the voltage of second electrode group is zero.Under second situation, with the first situation
Different places are, change the default deflection direction of the liquid crystal molecule of liquid crystal layer, to realize the first electricity when transmission region 51
Pole group keeps voltage when being zero, transmission region 51 can a direct transmission light, the second electrode group voltage of adjustable area 52 can when being zero
52 light transmission of region is adjusted, when the voltage of second electrode group is setting value, the liquid crystal molecule of adjustable area 52 deflects, adjustable area
52 is opaque, in addition, saving transmission region since transmission region 51 is not required to making alive i.e. light-permeable in the latter case
The setting of 51 first electrode groups is it is also possible that 51 1 direct transmission light of transmission region.
Further, in this embodiment light source 4 be LED light source.The luminous efficiency of LED light source is high.Preferably, this implementation
Light source 4 in example includes LED chip 41 and fluorescent glue 42, and fluorescent glue 42 is covered on LED chip 41.Made using LED chip 41
For light source, it can satisfy and correspond light source 4 and pixel unit, light is more uniform out.Fluorescent glue 42 be mainly fluorescent powder and
The mixture of silica gel, fluorescent glue 42 can directly be put to drip to above LED chip 41 and coat entire LED chip 41, by LED core
The color for the light that piece 41 issues is made into required color.Luminous efficiency can be improved in 41 surface of LED chip covering fluorescent glue 42.
Further, in this embodiment LED chip 41 be arranged on underlay substrate 1.Specifically, substrate in the present embodiment
Buffer layer 43 is provided between substrate 1 and LED chip 41.Buffer layer 43 is preferably graphene layer in the present embodiment.Setting buffering
Layer 43 is conducive to supporting and fixing for LED chip 41, can also be with it should be noted that buffer layer 43 is not limited to graphene layer
It is that sapphire material is formed.
Further, in this embodiment adjacent two slot 3 share a coaming plate 2.Two neighboring slot 3 shares one and encloses
Plate 2 can simplify structure, reduce the spacing between two slots 3, so that integrally light is more uniform out for backlight module.Specifically, this reality
It applies and is correspondingly provided with spacer material 61 above each coaming plate 2 in example, be used to support liquid lens 6.
Further, in this embodiment coaming plate 2 wall surface be equipped with high reflecting coating 21.High reflecting coating 21 is arranged can
To improve the utilization rate that light source 4 emits beam.
The embodiment of the invention also provides a kind of display devices, including above-mentioned backlight module.The coaming plate 2 of backlight module exists
Projection on the display panel of display device is located in the projection of black matrix on a display panel.Backlight module can be compatible with commonly
Field-of-view mode and collimated back mode, and under collimated back mode backlight collimation it is high, the property of display device can be promoted
Energy.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (11)
1. a kind of backlight module, the coaming plate including underlay substrate and on the underlay substrate, the coaming plate and the lining
Substrate, which encloses, to be set to form multiple slots, is equipped with light source in each slot, it is characterised in that：The notch of each slot is equipped with can
Translucent construction is controlled, is additionally provided with liquid lens above the controllable translucent construction；
The controllable translucent construction includes transmission region and adjustable area；
Under common view angle mode, the adjustable area and the equal light transmission of transmission region；
Under collimated back mode, the transmission region light transmission, the adjustable area is opaque；The focus of the liquid lens with
The transmission region coincides.
2. backlight module according to claim 1, it is characterised in that：The controllable translucent construction include set gradually it is upper
Polaroid, upper substrate, liquid crystal layer, lower substrate and down polaroid, phase on the corresponding upper substrate of the transmission region and lower substrate
To being provided with first electrode group, second electrode group is relatively set on the corresponding upper substrate of the adjustable area and lower substrate.
3. backlight module according to claim 2, it is characterised in that：By adjusting the first electrode group and second electrode
The voltage of group deflects corresponding region liquid crystal molecule, realizes that the transmission region and adjustable area are equal under common view angle mode
Light transmission；Realize that the adjustable area is opaque under collimated back mode.
4. backlight module according to claim 1, it is characterised in that：The light source is LED light source.
5. backlight module according to claim 4, it is characterised in that：The light source includes LED chip and fluorescent glue, described
Fluorescent glue is covered on the LED chip.
6. backlight module according to claim 5, it is characterised in that：The LED chip is arranged on underlay substrate.
7. backlight module according to claim 6, it is characterised in that：It is set between the underlay substrate and the LED chip
It is equipped with buffer layer.
8. backlight module according to claim 7, it is characterised in that：The buffer layer is graphene layer.
9. backlight module according to claim 1, it is characterised in that：Two adjacent slots share a coaming plate.
10. backlight module according to claim 9, it is characterised in that：The wall surface of the coaming plate is equipped with high reflecting coating.
11. a kind of display device, it is characterised in that：Including such as described in any item backlight modules of claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461535.8A CN105867028B (en) | 2016-06-23 | 2016-06-23 | A kind of backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461535.8A CN105867028B (en) | 2016-06-23 | 2016-06-23 | A kind of backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105867028A CN105867028A (en) | 2016-08-17 |
| CN105867028B true CN105867028B (en) | 2018-11-23 |
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| CN201610461535.8A Expired - Fee Related CN105867028B (en) | 2016-06-23 | 2016-06-23 | A kind of backlight module and display device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI655465B (en) * | 2018-03-02 | 2019-04-01 | 友達光電股份有限公司 | Backlight module and display device |
| CN108803149B (en) * | 2018-07-20 | 2021-05-25 | 京东方科技集团股份有限公司 | Surface light source, manufacturing method thereof and liquid crystal display device |
| CN109493746A (en) * | 2018-12-29 | 2019-03-19 | 厦门天马微电子有限公司 | Display panel and display device |
| TWI848525B (en) * | 2023-01-16 | 2024-07-11 | 友達光電股份有限公司 | Display apparatus |
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| TW201439627A (en) * | 2013-04-02 | 2014-10-16 | Hon Hai Prec Ind Co Ltd | Light emitting device and backlight module |
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| CN101300519A (en) * | 2005-11-02 | 2008-11-05 | 皇家飞利浦电子股份有限公司 | Optical system for 3 dimensional display |
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| CN105867028A (en) | 2016-08-17 |
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