CN107976842A - A kind of split type liquid crystal of combination instrument - Google Patents
A kind of split type liquid crystal of combination instrument Download PDFInfo
- Publication number
- CN107976842A CN107976842A CN201711034175.4A CN201711034175A CN107976842A CN 107976842 A CN107976842 A CN 107976842A CN 201711034175 A CN201711034175 A CN 201711034175A CN 107976842 A CN107976842 A CN 107976842A
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- Prior art keywords
- liquid crystal
- combination instrument
- stent
- led backlight
- scattering sheet
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 63
- 239000011159 matrix material Substances 0.000 claims description 9
- 238000013178 mathematical model Methods 0.000 claims description 8
- 201000009310 astigmatism Diseases 0.000 claims description 3
- -1 LED backlight Substances 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 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
- G02F1/133603—Direct backlight with LEDs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
- B60K35/22—Display screens
-
- 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
- G02F1/133606—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
- G02F1/133608—Direct backlight including particular frames or supporting means
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention proposes a kind of combination instrument with split type liquid crystal, including LED backlight, liquid crystal stent, scattering sheet and liquid crystal display, the liquid crystal stent is structure flat and in bowl-shape reflective surface, and it is provided with the planar base surface of the liquid crystal stent and coincide with the corresponding honeycomb of LED backlight, the LED backlight in the honeycomb described in being installed on；The combination instrument wiring board is in liquid crystal frame bottom and circuit connection LED backlight；The scattering sheet is installed on the liquid crystal cantilever tip, and liquid crystal display is installed in the scattering sheet.The present invention can either effectively solve the problems, such as split liquid crystal display brightness irregularities, eliminate hot spot phenomenon, while can make liquid crystal cost again compared with liquid crystal module reduction by 50% or so, economical and practical.
Description
Technical field
The present invention relates to automobile instrument technical field of liquid crystal display, more particularly to a kind of combination instrument split
Formula liquid crystal.
Background technology
At present, domestic automobile combination instrument uses liquid crystal module mostly in industry, though display effect is preferable, liquid crystal cost
Compare it is high, cause the combination instrument entirety level of profitability decline.Some Domestic instrument enterprise is attempted using lower-cost split type
Liquid crystal approach, due to not grasping the design method of split LCD backlight, though spend a large amount of manpower and materials repeatedly change mould and
Scheme, still suffers from the problem of liquid crystal display display brightness is uneven, hot spot is obvious, it is impossible to reaches expected display effect.Therefore automobile
Combination instrument need it is a kind of can reach good display effect and split type liquid crystal.
The content of the invention
The present invention proposes a kind of split type liquid crystal of combination instrument, can either effectively solve split liquid crystal display brightness disproportionation
The problem of even, eliminate hot spot phenomenon, while can make liquid crystal cost again compared with liquid crystal module reduction by 50% or so, economical and practical.
The technical proposal of the invention is realized in this way：
A kind of split type liquid crystal of combination instrument, including LED backlight 1, liquid crystal stent 2, scattering sheet 3 and liquid crystal display 4, it is described
Liquid crystal stent 2 is structure flat and in bowl-shape reflective surface, and is provided with the planar base surface of the liquid crystal stent 2 and 1 phase of LED backlight
Corresponding honeycomb, the LED backlight 1, which is coincide, to be installed in the honeycomb；The combination instrument wiring board 5 is in liquid crystal
2 bottom of stent and circuit connection LED backlight 1；The scattering sheet 3 is installed on 2 top of liquid crystal stent, in the scattering sheet 3
Liquid crystal display 4 is installed.
Preferably, the honeycomb is away from P=11mm.
Preferably, 3 front of scattering sheet is printed on astigmatism ink.
Preferably, the distance between the scattering sheet 3 and LED backlight 1 is that the ratio relation of light mixing distance H=8mm, H and P are expired
Sufficient even light mixing mathematical model.
Preferably, the liquid crystal display 4 is 3.5 cun, long 92mm, the dot matrix screen of width 46mm.
What the present invention produced has the beneficial effect that：The present invention is calculated by mixed light parameters such as LED spacing P, light mixing distance H
The brightness value of any point in illumination region, maximal illumination and minimal illumination are calculated with this, so as to calculate brightness uniformity, are established
Play the mathematical model of even light mixing analysis.The present invention is based on the mathematical model, and it is " flat+bowl-shape reflective to devise split liquid crystal
The lighting system of face " honeycomb structure, solves the problem of split liquid crystal display brightness irregularities, and greatly reduce liquid crystal into
This.The present invention has the characteristics that to realize that convenient, low cost, reliability are high.It is 3.5 cun of left sides present invention is mainly used for liquid crystal display
Right automobile combination meter.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be 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, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is LED luminous intensity distribution schematic diagrams.
Fig. 2 is LED backlight arrangement schematic diagram.
Fig. 3 is maximal illumination approximate calculation scheme.
Fig. 4 is minimal illumination approximate calculation scheme.
Fig. 5 is even light mixing mathematical model.
Fig. 6 is the structure diagram of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1, usual LED light emitting angles are in lambertian distribution, I0For LED center normal direction light intensity, shine for LED
Maximum in intensity, radius are in cosine distribution, and D (X, Y) is the measurement point of light shadow surface, the light intensity of the measurement point
For Iθ, as shown in formula (1)：
Wherein, IθFor the light intensity of measurement point, I0For LED center normal direction largest light intensity, θ is measurement light and center method
The angle of line, H are light mixing distance, and r is the distance between LED centres of luminescence point and measurement point D.
As shown in Fig. 2, matrix arrangement of the LED backlight in a m rows n row, the LED for defining i rows j row is Lij, define first
The LED, L that row one arranges11Coordinate (x1,y1) it is coordinate origin.X-direction LED spacing is Px, Y-direction LED spacing is Py, then LijSit
It is designated as [x1+(i-1)Px,y1+(j-1)Py], measurement point D (X, Y) and LijDistance rijAs shown in formula (2)：
In formula (2), rijFor LijThe distance between centre of luminescence point and measurement point D, H is light mixing distance.
Available, light intensity Is of all LED at measurement point D, as shown in formula (3) by formula (1), formula (2)：
Since illumination is defined as the light intensity in plane of illumination unit solid angle, i.e., the illumination L at measurement point D is：
As shown in figure 3, work as Px=PyDuring=P, no matter the line number columns of LED matrix is how many, the maximal illumination on shadow surface
Lmax shines obtained by contribution by any LED in matrix and its periphery 4 closest LED adjacent thereto.According to formula (4)
Approximate calculation is drawn：
As shown in figure 4, work as Px=PyDuring=P, no matter the line number columns of LED matrix is how many, the minimal illumination on shadow surface
Lmin shines obtained by contribution by adjacent 4 LED (2 × 2 matrixes) in matrix.Drawn according to formula (4) approximate calculation：
As shown in Figure 5.The mathematical model of even light mixing is calculated according to formula (5), formula (6), obtains uniformity U and mixed light
Relation between parameter H, P：
The even light mixing mathematical model obtained according to formula (7), calculates the arrangement relation of split type LCD backlight, draws
Light mixing distance H is 8mm, and LED spacing P is 11mm, and the split type liquid of " flat+bowl-shape reflective surface " honeycomb structure is designed with this
Crystalline substance, i.e., the split type liquid crystal of combination instrument of the present invention.
As shown in fig. 6, including LED backlight 1, liquid crystal stent 2, scattering sheet 3 and liquid crystal display 4, the liquid crystal stent 2 is flat
And in the structure of bowl-shape reflective surface, and be provided with the planar base surface of the liquid crystal stent 2 and 1 corresponding honeycomb of LED backlight, institute
LED backlight 1 is stated to coincide in the honeycomb described in being installed on；The combination instrument wiring board 5 is in 2 bottom of liquid crystal stent and circuit
Connect LED backlight 1；The scattering sheet 3 is installed on 2 top of liquid crystal stent, plays a part of even light；In the scattering sheet 3
Liquid crystal display 4 is installed, mainly plays a part of showing information.
In the present invention, LED backlight 1 is inserted in the honeycomb of liquid crystal stent 2, and some 1 matrix arrangements of LED backlight form honeycomb
Structure, honeycomb is away from P=11mm；3 front of scattering sheet is printed on the astigmatism ink of enough increase scattering sheet mist degrees；Scattering sheet 3 and LED is carried on the back
Distance between light 1 is that the ratio relation of light mixing distance H=8mm, H and P meet even light mixing mathematical model；The liquid crystal display 4
For 3.5 cun, long 92mm, the dot matrix screen of width 46mm.
LED backlight 1 is arranged in arrays to form honeycomb backlight, the light that LED backlight 1 is sent, by 2 one spacing of liquid crystal stent
Mixed light from H, and the bowl-shape inner wall of stent and the multiple reflections of scattering sheet 3, area source is directly formed by LED point light source, is uniformly shone
Penetrate on liquid crystal display 4.Therefore split liquid crystal display brightness irregularities can effectively be solved the problems, such as, eliminate hot spot phenomenon.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (5)
1. the split type liquid crystal of a kind of combination instrument, it is characterised in that including LED backlight (1), liquid crystal stent (2), scattering sheet
(3) and liquid crystal display (4), the liquid crystal stent (2) is structure flat and in bowl-shape reflective surface, and the liquid crystal stent (2)
Be provided with planar base surface with LED backlight (1) corresponding honeycomb, the LED backlight (1), which is coincide, is installed on the honeycomb
It is interior；The combination instrument wiring board (5) is in liquid crystal stent (2) bottom and circuit connection LED backlight (1)；The scattering sheet (3)
Liquid crystal stent (2) top is installed on, liquid crystal display (4) is installed on the scattering sheet (3).
2. the split type liquid crystal of a kind of combination instrument as claimed in claim 1, it is characterised in that the honeycomb is away from P=
11mm。
A kind of 3. split type liquid crystal of combination instrument as claimed in claim 1, it is characterised in that scattering sheet (3) front
It is printed on astigmatism ink.
4. the split type liquid crystal of a kind of combination instrument as claimed in claim 1, it is characterised in that the scattering sheet (3) and LED
Distance between backlight (1) is that the ratio relation of light mixing distance H=8mm, H and P meet even light mixing mathematical model.
5. the split type liquid crystal of a kind of combination instrument as claimed in claim 1, it is characterised in that the liquid crystal display (4) is 3.5
It is very little, long 92mm, the dot matrix screen of width 46mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034175.4A CN107976842A (en) | 2017-10-30 | 2017-10-30 | A kind of split type liquid crystal of combination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034175.4A CN107976842A (en) | 2017-10-30 | 2017-10-30 | A kind of split type liquid crystal of combination instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107976842A true CN107976842A (en) | 2018-05-01 |
Family
ID=62012776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711034175.4A Pending CN107976842A (en) | 2017-10-30 | 2017-10-30 | A kind of split type liquid crystal of combination instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN107976842A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007317778A (en) * | 2006-05-24 | 2007-12-06 | Harison Toshiba Lighting Corp | Backlight unit |
| CN101253363A (en) * | 2005-09-15 | 2008-08-27 | 日本瑞翁株式会社 | Directly downward type backlight device |
| CN101354482A (en) * | 2007-07-23 | 2009-01-28 | 奇菱科技股份有限公司 | Light-mix machine and backlight module including the same |
| CN101749601A (en) * | 2010-01-08 | 2010-06-23 | 友达光电股份有限公司 | Backlight module and display with same |
| CN202580935U (en) * | 2012-04-05 | 2012-12-05 | 青岛海信电器股份有限公司 | LED (light-emitting diode) backlight module and television |
| CN202757009U (en) * | 2012-08-06 | 2013-02-27 | 青岛海信电器股份有限公司 | Direct type backlight module and display device |
| CN203131615U (en) * | 2013-03-15 | 2013-08-14 | 深圳Tcl新技术有限公司 | Straight-down backlight module and liquid crystal display device |
| JP2014074756A (en) * | 2012-10-03 | 2014-04-24 | Sharp Corp | Display device and television receiver |
| CN104728671A (en) * | 2015-02-09 | 2015-06-24 | 中南民族大学 | LED lattice backlight device and backlight producing method thereof |
| CN207440476U (en) * | 2017-10-30 | 2018-06-01 | 东风汽车电子有限公司 | A kind of split type liquid crystal of combination instrument |
-
2017
- 2017-10-30 CN CN201711034175.4A patent/CN107976842A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101253363A (en) * | 2005-09-15 | 2008-08-27 | 日本瑞翁株式会社 | Directly downward type backlight device |
| JP2007317778A (en) * | 2006-05-24 | 2007-12-06 | Harison Toshiba Lighting Corp | Backlight unit |
| CN101354482A (en) * | 2007-07-23 | 2009-01-28 | 奇菱科技股份有限公司 | Light-mix machine and backlight module including the same |
| CN101749601A (en) * | 2010-01-08 | 2010-06-23 | 友达光电股份有限公司 | Backlight module and display with same |
| CN202580935U (en) * | 2012-04-05 | 2012-12-05 | 青岛海信电器股份有限公司 | LED (light-emitting diode) backlight module and television |
| CN202757009U (en) * | 2012-08-06 | 2013-02-27 | 青岛海信电器股份有限公司 | Direct type backlight module and display device |
| JP2014074756A (en) * | 2012-10-03 | 2014-04-24 | Sharp Corp | Display device and television receiver |
| CN203131615U (en) * | 2013-03-15 | 2013-08-14 | 深圳Tcl新技术有限公司 | Straight-down backlight module and liquid crystal display device |
| CN104728671A (en) * | 2015-02-09 | 2015-06-24 | 中南民族大学 | LED lattice backlight device and backlight producing method thereof |
| CN207440476U (en) * | 2017-10-30 | 2018-06-01 | 东风汽车电子有限公司 | A kind of split type liquid crystal of combination instrument |
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