CN104316990B - Light guide plate and preparation method thereof, backlight module and liquid crystal display device - Google Patents
Light guide plate and preparation method thereof, backlight module and liquid crystal display device Download PDFInfo
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- CN104316990B CN104316990B CN201410683092.8A CN201410683092A CN104316990B CN 104316990 B CN104316990 B CN 104316990B CN 201410683092 A CN201410683092 A CN 201410683092A CN 104316990 B CN104316990 B CN 104316990B
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- Prior art keywords
- guide plate
- light guide
- main body
- light
- plate main
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
- Polarising Elements (AREA)
Abstract
The invention provides a kind of light guide plate and preparation method thereof, backlight module and liquid crystal display device, the back of the body light guide plate includes：Light guide plate main body and the light source for being arranged on the light guide plate main body side, diffusing structure is formed with the light guide plate main body, the diffusing structure has first refractive index to ordinary light, has the second refractive index to extraordinary ray, and one in first refractive index and the second refractive index is identical with the refractive index of light guide plate main body；Also, the light guide plate main body is made by depolarization material；And/or, depolarization diaphragm or phase delay diaphragm are provided between the light guide plate main body and the light source.The liquid crystal display device of the backlight module provided using the present invention, can equally improve the utilization rate of light while polarised light is provided.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of light guide plate and preparation method thereof, backlight module and liquid crystal
Display device.
Background technology
In order to improve in the utilization rate of light, liquid crystal display device of the prior art it is general in the bottom of lower Polarizer again
One layer of reflective polaroid of addition directly uses polarization light source.As shown in figure 1, anti-to add one layer in the bottom of lower Polarizer
The schematic diagram of liquid crystal display device during emitting polaroid, including backlight module, reflective polarizer, liquid crystal panel (LCD
Panel), reflective polarizer can allow for the polarised light transmission in one of direction, and the polarised light on other directions is anti-
Inject capable re-using.
Although above-mentioned two ways can improve the utilization rate of light, cost is all higher.Accordingly, it would be desirable to which one kind is not
Be same as prior art, improve light utilization rate on the premise of provide polarised light structure.
The content of the invention
It is an object of the invention to provide a kind of new structure of polarized light, to be provided on the premise of the utilization rate of light is improved
Polarised light.
In order to achieve the above object, the invention provides a kind of light guide plate, including light guide plate main body, the diffusing structure pair
Ordinary light has first refractive index, have in the second refractive index, first refractive index and the second refractive index one to extraordinary ray
It is individual identical with the refractive index of light guide plate main body；Also,
The light guide plate main body is made by depolarization material；And/or, the light guide plate also includes being arranged on the light guide plate master
The depolarization diaphragm or phase delay diaphragm set between body and the light source.
Further, the diffusing structure is the multiple groove-like structures to be formed on the light guide plate main body, and described many
Filled with consistent liquid crystal molecule is orientated in individual groove-like structure, the liquid crystal molecule is to the first refractive index of ordinary light with being sought to non-
One in second refractive index of ordinary light is identical with the refractive index of the light guide plate main body.
Further, the multiple groove-like structure is V-shaped groove structure.
Further, the multiple groove-like structure is distributed in the light guide plate main body in net-point shape.
Further, the oriented material for being orientated to the liquid crystal molecule is also filled with the groove-like structure,
And the refractive index of the oriented material is identical with the refractive index of the light guide plate main body.
Further, the depolarization material is amorphous materials.
Further, when the light guide plate main body is made by depolarization material, the diffusing structure formation is in the leaded light
The light emission side of plate main body.
Further, when the light guide plate also includes being attached to the depolarization diaphragm of the light guide plate main body incidence surface and described
Light guide plate main body is not that when being made by depolarization material, the phase-delay quantity of the phase delay diaphragm is K*137.5nm ± 30nm,
Wherein K is odd number..
Present invention also offers a kind of method of the backlight module made described in any of the above-described, it is characterised in that makes
The step of light guide plate main body, includes：
Patterning is formed on substrate；
Oriented material is coated in the patterning of formation；
Orientation process is carried out to oriented material；
Irrigate liquid crystal；
Cure package.
Present invention also offers a kind of liquid crystal display device, including the backlight module described in any one as described above.
In the light guide plate that the present invention is provided, the diffusing structure set in light guide plate main body has to the light in different polarization direction
There are different refractive indexes, and the refractive index to one of which polarised light is identical with the refractive index of light guide plate main body.So, for
The refractive index of the diffusing structure polarised light different from the refractive index in light guide plate main body, diffusing structure can be scattered to it,
It is set finally to pass through light guide plate main body.And the refractive index in diffusing structure and refractive index identical in light guide plate main body are inclined
Shake light, what is set by the light guide plate main body being made up of depolarization material or between the light guide plate main body and the light source
Depolarization diaphragm or phase delay diaphragm rear polarizer state change, and can finally be converted into the refractive index in diffusing structure with leading
The polarised light that the refractive index of tabula rasa main body is different passes through light guide plate main body.It can be seen that, the light guide plate provided is included using the present invention
Backlight module, can equally improve the utilization rate of light while polarised light is provided.And the backlight provided using the present invention
The cost of manufacture of the liquid crystal display device of module is relatively low.
Brief description of the drawings
Fig. 1 is the structural representation of liquid crystal display device of the prior art；
Fig. 2 is the structural representation for the light guide plate that the embodiment of the present invention one is provided；
Fig. 3 a and Fig. 3 b are the principle schematic for the light guide plate that the embodiment of the present invention one is provided；
Fig. 4 is another structural representation for the light guide plate that the embodiment of the present invention one is provided；
Schematic diagrames of Fig. 5 a and Fig. 5 b for the light guide plate of the invention provided when light guide plate main body is formed with diffusing structure；
Fig. 6 is the structural representation for the light guide plate that the embodiment of the present invention two is provided；
The schematic flow sheet of the preparation method of light guide plate main body in the light guide plate that Fig. 7 provides for the present invention；
The structural representation for the backlight module that Fig. 8 provides for the present invention；
The structural representation for the liquid crystal display device that Fig. 9 provides for the present invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is further described.Following examples are only
For clearly illustrating technical scheme, and it can not be limited the scope of the invention with this.
Embodiment one
The embodiment of the present invention one provides a kind of backlight module, as shown in Fig. 2 including light guide plate main body 10, light guide plate master
Diffusing structure 20, refractive index no and refractive index to extraordinary ray e light of the diffusing structure 20 to ordinary light o light are formed with body 10
Ne is different, and one in no and ne is identical with the refractive index of light guide plate main body 10；Also, light guide plate main body 10 is by depolarization material
Make.
Understandable to be, depolarization material here is the material for referring to be converted to a kind of polarised light non-polarized light,
Such as quartz, PMMA (polymethyl methacrylate) etc..
A branch of incident light produces two beams refraction light in the interfacial refraction of anisotropic medium, wherein a branch of refraction light begins
Eventually in the plane of incidence, and in accordance with the law of refraction, referred to as ordinary light, abbreviation o light.Another beam refraction light is general not in the plane of incidence,
Also the law of refraction is not observed, there is different refractive indexes, referred to as extraordinary ray, abbreviation e light along different directions.
In certain practical application, in addition to above-mentioned light guide plate main body and light source, backlight module should also contain to be arranged on and lead
The speculum of (the opposite side of exiting surface) below tabula rasa main body, for being closed to light source and light being reflexed into light guide plate
Speculum in main body etc., these are not the emphasis of the present invention, are no longer described in detail herein yet.
Diffusing structure in the backlight module provided with reference to Fig. 3 a and Fig. 3 b the present invention is described in detail, it is assumed that
Diffusing structure 20 is identical with the refractive index of light guide plate main body 10 to the refractive index no of o light in the embodiment of the present invention, the refraction to e light
Rate ne is different from the refractive index of light guide plate main body 10；Then as shown in Figure 3 a, for e light, due in the He of light guide plate main body 10
Different in the refractive index of diffusing structure 20, deviation occurs for angle during interface of the e light through light guide plate main body 10 and diffusing structure 20, most
Make e light eventually with the incident angles less than reflection critical angle to the principal plane of light guide plate main body 10 and finally through light guide plate master
Body 10；And for o light, as shown in Figure 3 b, light guide plate main body 10 and diffusing structure 20 are not different, o light is by light guide plate master
When body 10 is entered in diffusing structure 20, because refractive index does not change, diffusing structure 20 will not also change the propagation side of o light
To, therefore o light also will not be with the incident angles less than reflection critical angle on the principal plane of light guide plate main body 10, and in leaded light
Continue to be totally reflected that (in practical application, a part of light can be from the side outgoing of light guide plate main body, and is installed in side in plate main body 10
The speculum reflection in face reenters light guide plate main body 10).Because light guide plate main body 10 is made by depolarization material, o light is in leaded light
O light and e light are will differentiate into when being propagated in plate main body, the e light outgoing differentiated, o light continues to reflect in light guide plate main body 10, this
Sample e light continues outgoing, and the energy of o light constantly diminishes, and e light is finally completely converted into, through light guide plate main body 10.
Although it can be appreciated that being to the refractive index no of o light and the refractive index of light guide plate main body 10 here with diffusing structure 20
It is identical, to the explanation of the refractive index ne progress different from the refractive index of light guide plate main body 10 of e light, in practical application, tie scattering
Structure 20 is identical with the refractive index of light guide plate main body 10 to the refractive index ne of e light, to refractive index no and the light guide plate main body 10 of o light
Refractive index difference can also obtain identical effect.
It is pointed out that in the embodiment of the present invention, light guide plate main body 10 can be made by depolarization material on the whole,
Can also be that subregion is made by depolarization material.Because for o light, as long as it by depolarization material and is not converted into
E light, all can always be propagated in light guide plate main body 10, until it is by being formed with the region of depolarization material and being converted into e light.
It is preferred that, depolarization material here can be amorphous materials.
Further, as shown in Figure 3 a and Figure 3 b shows, diffusing structure 20 is arranged on the light emission side of light guide plate main body 10.So do
Benefit be that can make to be scattered the direct outgoing of e light that structure 20 is scattered, it is to avoid e light is changed again in light guide plate main body 10
For o light.
It is preferred that, shown in Fig. 4, multiple groove-like structures of the diffusing structure 20 for formation on light guide plate main body 10, and it is multiple
In refractive index ne in groove-like structure filled with the liquid crystal molecule that orientation is consistent, refractive index no of the liquid crystal molecule to o light and to e light
One it is identical with the refractive index of light guide plate main body 10.
In certain practical application, those skilled in the art can also have anisotropic material as filling using other
Material, so as to form above-mentioned diffusing structure.The preferred embodiment of the present invention should not be understood to the scope of the present invention
Limit.
It is preferred that, multiple groove-like structures are V-shaped groove structure.
Benefit from the structure of V-shaped groove is to enable to incident light in the horizontal direction or close in horizontal direction
Line is to the direction deviation perpendicular to light guide plate main body.Here V-shaped groove can be as shown in Fig. 2,3,4,6, where light guide plate
Run through whole substrate on in-plane.Another preferably, multiple groove-like structures can be in light guide plate main body 10
It is distributed in net-point shape, such design benefit is the density domination backlight that can allow for designer by controlling groove-like structure
The brightness of module.Simultaneously in order that obtaining light incident in the horizontal direction or close in horizontal direction to perpendicular to light guide plate master
The direction deviation of body, the groove-like structure of net-point shape distribution can be taper or approximate cone-shape.Fig. 5 a and Fig. 5 b are respectively to be formed with
The schematic cross-section and top view of the light guide plate main body of the groove-like structure for the approximate cone-shape being distributed in net-point shape.
It is preferred that, the oriented material for being orientated to liquid crystal molecule, and orientation are also filled with multiple groove-like structures
The refractive index of material is identical with the refractive index of light guide plate main body 10.
Embodiment two
Embodiments of the invention two provide another light guide plate, as shown in fig. 6, the knot with the light guide plate shown in Fig. 2
Unlike structure, blooming piece 30 is pasted with the incidence surface (i.e. between light guide plate main body 10 and light source) of light guide plate main body 10,
The blooming piece 30 is depolarization diaphragm or phase delay diaphragm, and light guide plate main body 10 is common light guide plate main body, that is, is not had
The light guide plate main body of depolarization characteristic.Here depolarization diaphragm is consistent with the effect of phase delay diaphragm, is all the polarization to light
State is changed or gradually changed, and a kind of light of polarization state is converted to the light of another polarization state.
It is known in those skilled in the art to be, speculum can be typically set in the side of light guide plate, made through light guide plate side
The light of face outgoing reenters light guide plate.Then in the embodiment of the present invention, the o light for entering light guide plate main body, due to can not be through
The principal plane outgoing of light guide plate main body, can eventually pass through after the side outgoing of light guide plate main body and be reflected back toward light guide plate master
Body, in this process, can pass through the depolarization diaphragm or phase delay diaphragm for being attached to light guide plate main body side, by depolarization film
Piece or the conversion of phase delay diaphragm are partially converted to e light.
The realization principle for the light guide plate that the embodiment of the present invention two is provided is different from the realization principle of the light guide plate of embodiment one
Part is, in embodiment one, is that will be unable to the polarised light of outgoing gradually by the light guide plate main body 10 made by depolarization material
Be converted in the polarised light for being capable of outgoing, embodiment two is realized by depolarization diaphragm or phase delay diaphragm.
It is preferred that, when the light guide plate also includes being attached to the depolarization diaphragm of the light guide plate main body incidence surface and described leads
Tabula rasa main body is not that when being made by depolarization material, the phase-delay quantity of the phase delay diaphragm is K*137.5nm ± 30nm, its
Middle K is odd number.
Benefit of the phase-delay quantity of phase delay diaphragm within above range is set to improve polarization converted
Efficiency, you can so that a kind of polarised light is converted to another polarised light and needs the number of times reduction through phase delay diaphragm.Certainly
In actual applications, the phase-delay quantity of phase delay diaphragm falling within the scope of above-mentioned not necessarily, by phase delay
Amount, which is set to other specification, can also obtain the effect of phase delay, and simply its corresponding conversion efficiency is relatively low.It is of the invention preferred
Embodiment can not be interpreted as limiting the scope of the present invention.
In addition, in the embodiment of the present invention two, groove-like structure 20 can be arranged on the light emission side of light guide plate main body 10, can also
It is arranged on the relative side of light emission side.In light guide plate and embodiment one in other aspects, the backlight module that embodiment two is provided
The structure of the light guide plate of offer can be consistent.
Embodiment three
In the light guide plate that the embodiment of the present invention three is provided, depolarization material can be used to make light guide plate main body 10, and leading
The incidence surface (i.e. between light guide plate main body 10 and light source) of tabula rasa main body 10 is pasted with blooming piece 30 (depolarization diaphragm or phase
Postpone diaphragm), in this way, equally the polarised light for being unable to outgoing can be specially converted to and be capable of the polarised light of outgoing and go out
Penetrate.Certainly, in practical application, the depolarization characteristic of light guide plate main body 10 will be adapted with the depolarization characteristic of blooming piece 30.
Present invention also offers a kind of method of the backlight module made described in any of the above-described, wherein making light guide plate master
The step of body, is including as shown in Figure 7：
Step S1, forms patterning on substrate；
Step S2, oriented material is coated in the patterning of formation；
Step S3, orientation process is carried out to oriented material；
Step S4, irrigates liquid crystal；
Step S5, cure package.
Certainly in actual applications, in the light guide plate main body in making embodiment one or three, substrate here should be by moving back
Inclined material makes.In the light guide plate in making embodiment two and three, after light guide plate main body is made according to the method described above, also
Corresponding phase delay diaphragm or depolarization diaphragm should be attached in the side of light guide plate main body.
Here structure plan refers to the pattern for forming the groove-like structure in above-described embodiment.
Present invention also offers a kind of backlight module, including the light guide plate described in any of the above-described embodiment.
As shown in figure 8, the schematic diagram of the backlight module to provide light guide plate comprising the embodiment of the present invention two, including institute in figure
The light guide plate shown.In certain practical application, it should also contain and be arranged on the light source of the light guide plate side, be arranged on below light guide plate
Speculum, the speculum for being closed to light source and reflexing to light in light guide plate of (the opposite side of exiting surface)
Deng, these be not the present invention emphasis, be also no longer described in detail herein.
Present invention also offers a kind of liquid crystal display device, including the new backlight module described in any of the above-described.Such as
Shown in Fig. 9, and unlike existing liquid crystal display device, light extraction of the liquid crystal display device that the present invention is provided in backlight module
On direction, reflective polaroid is not provided with.Overall cost of manufacture can so be reduced.
Here liquid crystal display device can be Electronic Paper, mobile phone, tablet personal computer, television set, display, notebook electricity
Any product or part with display function such as brain, DPF, navigator.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of light guide plate, applied to sidelight type backlight module, the light guide plate includes light guide plate main body, the light guide plate main body
On be formed with diffusing structure, it is characterised in that the diffusing structure has first refractive index to ordinary light, had to extraordinary ray
One in second refractive index, the first refractive index and second refractive index is identical with the refractive index of light guide plate main body；And
And,
The light guide plate main body is made by depolarization material；And/or, the light guide plate also enters including being attached to the light guide plate main body
The depolarization diaphragm or phase delay diaphragm of smooth surface；
Wherein, diffusing structure is the multiple groove-like structures to be formed on the light guide plate main body, and in the multiple groove-like structure
Filled with the consistent liquid crystal molecule of orientation.
2. light guide plate as claimed in claim 1, it is characterised in that the liquid crystal molecule to the first refractive index of ordinary light with it is right
One in second refractive index of extraordinary ray is identical with the refractive index of the light guide plate main body.
3. light guide plate as claimed in claim 2, it is characterised in that the multiple groove-like structure is V-shaped groove structure.
4. light guide plate as claimed in claim 2, it is characterised in that the multiple groove-like structure is in the light guide plate main body
Net-point shape is distributed.
5. the light guide plate as described in claim any one of 2-4, it is characterised in that be also filled with being used in the groove-like structure pair
The oriented material that the liquid crystal molecule is orientated, and the refractive index of the oriented material and the refractive index of the light guide plate main body
It is identical.
6. light guide plate as claimed in claim 1, it is characterised in that the depolarization material is amorphous materials.
7. light guide plate as claimed in claim 1, it is characterised in that when the light guide plate main body is made by depolarization material, institute
State light emission side of the diffusing structure formation in the light guide plate main body.
8. light guide plate as claimed in claim 1, it is characterised in that when the light guide plate also includes being attached to the light guide plate master
The depolarization diaphragm and the light guide plate main body of body incidence surface are not the phases of phase delay diaphragm when being made by depolarization material
Retardation is K*137.5nm ± 30nm, and wherein K is odd number.
9. a kind of method for making the light guide plate as any one of claim 1-8, it is characterised in that make the leaded light
The step of plate main body, includes：
Patterning is formed on substrate；
Oriented material is coated in the patterning of formation；
Orientation process is carried out to oriented material；
Irrigate liquid crystal；
Cure package.
10. a kind of backlight module, it is characterised in that including the light guide plate as described in claim any one of 1-8.
11. a kind of liquid crystal display device, it is characterised in that including the backlight module described in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683092.8A CN104316990B (en) | 2014-11-24 | 2014-11-24 | Light guide plate and preparation method thereof, backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683092.8A CN104316990B (en) | 2014-11-24 | 2014-11-24 | Light guide plate and preparation method thereof, backlight module and liquid crystal display device |
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| Publication Number | Publication Date |
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| CN104316990A CN104316990A (en) | 2015-01-28 |
| CN104316990B true CN104316990B (en) | 2017-08-29 |
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| CN201410683092.8A Expired - Fee Related CN104316990B (en) | 2014-11-24 | 2014-11-24 | Light guide plate and preparation method thereof, backlight module and liquid crystal display device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425329B (en) | 2016-01-04 | 2019-01-22 | 京东方科技集团股份有限公司 | A kind of polaroid and preparation method thereof, display panel and display device |
| CN108603651B (en) * | 2016-02-09 | 2020-06-23 | 纳诺科普有限公司 | Light guide with multiple light paths |
| CN109307903B (en) * | 2017-07-28 | 2020-05-12 | 江苏集萃智能液晶科技有限公司 | Backlight source for emitting polarized light, preparation method thereof and liquid crystal display device |
| CN114791647A (en) * | 2022-04-27 | 2022-07-26 | 深圳创维－Rgb电子有限公司 | Light guide plate and preparation process thereof, lateral-entry backlight module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185017A (en) * | 2005-05-27 | 2008-05-21 | 皇家飞利浦电子股份有限公司 | Illumination device for a display, and method of manufacturing the same |
| CN101187749A (en) * | 2006-11-15 | 2008-05-28 | 群康科技(深圳)有限公司 | Liquid crystal display |
| CN102354081A (en) * | 2011-11-10 | 2012-02-15 | 范志新 | Stressed liquid crystal transparent projection screen as well as preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100883659B1 (en) * | 2006-12-27 | 2009-02-18 | 삼성전자주식회사 | Illuminating apparatus providing polarized light |
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2014
- 2014-11-24 CN CN201410683092.8A patent/CN104316990B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185017A (en) * | 2005-05-27 | 2008-05-21 | 皇家飞利浦电子股份有限公司 | Illumination device for a display, and method of manufacturing the same |
| CN101187749A (en) * | 2006-11-15 | 2008-05-28 | 群康科技(深圳)有限公司 | Liquid crystal display |
| CN102354081A (en) * | 2011-11-10 | 2012-02-15 | 范志新 | Stressed liquid crystal transparent projection screen as well as preparation method and application thereof |
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| CN104316990A (en) | 2015-01-28 |
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