CN105974644B - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
- Publication number
- CN105974644B CN105974644B CN201610554407.8A CN201610554407A CN105974644B CN 105974644 B CN105974644 B CN 105974644B CN 201610554407 A CN201610554407 A CN 201610554407A CN 105974644 B CN105974644 B CN 105974644B
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- Prior art keywords
- polaroid
- liquid crystal
- crystal display
- wiregrating
- wavelength
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- 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
- G02F1/133528—Polarisers
- G02F1/133548—Wire-grid polarisers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Abstract
The present invention provides a kind of liquid crystal display, the upper polaroid (3) of the liquid crystal display and down polaroid (4) are sub-wavelength nanometer wiregrating polaroid, and upper polaroid (3) is different at least one in the wire grid construction and wire grid material of down polaroid (4), so that can be mutually compensated through upper polaroid (3) and the wavelength of the light of down polaroid (4), so as to improve wavelength dependency problem of the sub-wavelength wiregrating polaroid in liquid crystal display applications, improve the whole penetrance and brightness uniformity of liquid crystal display, promote display quality.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of liquid crystal displays.
Background technique
Nano impression (Nano-imprint Lithography, NIL) technological break-through conventional lithography subtracts in characteristic size
Problem during small has the characteristics that high resolution, low cost, high yield.Since nineteen ninety-five proposes, nano impression is
A variety of stamping techniques have been developed out, semiconductors manufacture, MEMS (Microelectromechanical are widely used in
Systems, MEMS), biochip, the fields such as biomedicine.The basic thought of NIL technology is by template, by pattern transfer
Onto corresponding substrate, the medium of transfer is usually one layer of very thin polymer film, makes it by the methods of hot pressing or irradiation
Structure hardening is to retain the figure of transfer.Whole process includes coining and two processes of pattern transfer.According to method for stamping
Difference, NIL can be divided mainly into thermoplastic (Hot embossing), ultraviolet (UV) solidification and micro- contact (Micro contact
Printing, uCP) three kinds of photoetching techniques.
For needing all kinds of devices using polaroid, such as LCD, OLED etc., traditional polaroid is by multilayer film group
Made of conjunction, wherein most crucial part is polarizing layer, the polyvinyl alcohol usually containing the iodine molecule with polarisation effect
(PVA) layer, is followed by located at the protective layer of polarizing layer two sides, generally transparent Triafol T (TAC) layer, mainly
It is the state that is stretched in order to maintain polarisation in polarizing layer, avoids the loss of the sub- moisture of polarisation, protect it from extraneous influence,
The polaroid generates polarised light to the absorption of iodine molecule by two.
With the development of nanometer embossing, people, which have begun, prepares sub-wavelength grate structure, to reach to visible light
The polarization of the light of wave-length coverage, so-called sub-wave length grating refer to that screen periods are much smaller than the grating of lambda1-wavelength, sub- wave
Long optical grating construction for transverse magnetic field (Transverse Magnetic, TM) and transverse electric field (Transverse Electric,
TE) state light field have very high extinction ratio, can significantly through perpendicular to metal wire orientation TM light and reflected parallel
In the TE light of metal wire orientation, makes it possible to and used as the polaroid structure of high transmittance.Sub-wavelength wiregrating polarisation
Piece has the advantages that high transmittance and high contrast compared to traditional polaroid, but it is when being applied in liquid crystal display
There are problems that wavelength dependency.
Summary of the invention
The purpose of the present invention is to provide a kind of liquid crystal displays, can improve sub-wavelength wiregrating polaroid in liquid crystal display
Wavelength dependency problem in device application, improves the utilization rate of light, promotes the display effect of liquid crystal display.
To achieve the above object, the present invention provides a kind of liquid crystal displays, comprising: upper substrate, with the upper substrate phase
Lower substrate to setting, the upper polaroid set on the side of the upper substrate and the lower polarisation set on the side of the lower substrate
Piece；
The upper polaroid and down polaroid are sub-wavelength nanometer wiregrating polaroid, and the upper polaroid and it is lower partially
At least one in the wire grid construction and wire grid material of mating plate is different.
The wire grid construction is defined by grid parameters, the grid parameters include: the wiregrating period, wiregrating width and
Wiregrating height.
The wire grid material of the upper polaroid and down polaroid is metal or metal oxide.
The wire grid material of the upper polaroid and down polaroid is aluminium, silver or gold.
The upper polaroid is different from the wiregrating period of down polaroid.
The wiregrating of the upper polaroid and down polaroid is of different size.
The upper polaroid is different from the wiregrating height of down polaroid.
The upper polaroid and the wire grid material of down polaroid and wiregrating period are different.
The upper polaroid and down polaroid are made of nano-imprint process or photoetching process.
The transmitance of the upper polaroid light longer to wavelength is higher, the down polaroid light shorter to wavelength
Transmitance it is higher.
Beneficial effects of the present invention: the present invention provides a kind of liquid crystal display, the upper polaroid of the liquid crystal display
It is sub-wavelength nanometer wiregrating polaroid with down polaroid, and the wire grid construction and wire grid material of upper polaroid and down polaroid
In at least one be different so that can be mutually compensated through the wavelength of the light of upper polaroid and down polaroid, from
And improve wavelength dependency problem of the sub-wavelength wiregrating polaroid in liquid crystal display applications, improve the entirety of liquid crystal display
Penetrance and brightness uniformity promote display quality.
Detailed description of the invention
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the schematic diagram of the first embodiment of liquid crystal display of the invention；
Fig. 2 is the schematic diagram of the second embodiment of liquid crystal display of the invention；
Fig. 3 is the transmitance of liquid crystal display of the invention and the graph of relation of wavelength of light.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
Referring to Fig. 1, the present invention provides a kind of liquid crystal display, comprising: upper substrate 1 is oppositely arranged with the upper substrate 1
Lower substrate 2, the down polaroid set on the upper polaroid 3 of the side of the upper substrate 1 and set on the side of the lower substrate 2
4；
Wherein, the upper polaroid 3 and down polaroid 4 are sub-wavelength nanometer wiregrating polaroid, and the upper polarisation
At least one in the wire grid construction and wire grid material of piece 3 and down polaroid 4 is different.
Specifically, the light of reflection can be re-used using sub-wavelength nanometer wiregrating polaroid, make full use of into
Light is penetrated, and guarantees the uniformity of color and brightness.
Specifically, the polarized light property of sub-wavelength nanometer wiregrating polaroid is determined by wire grid material and wire grid construction, institute
Wire grid construction is stated by grid parameters to define, the grid parameters include: wiregrating width (linewidth), wiregrating depth
(depth) and the wiregrating period (pitch).Different wire grid constructions enables to sub-wavelength nano wire from different wire grid materials
Grid polaroid generates different wavelength dependencies.
That is, high by the wiregrating period of the change upper polaroid 3 and down polaroid 4, wiregrating width, wiregrating
Degree and wire grid material, adjustable upper polaroid 3 and down polaroid 4 are to the transmitance of the light of different wave length, so that through upper
The wavelength of polaroid 3 and the light of down polaroid 4 can mutually compensate, so as to improve sub-wavelength wiregrating polaroid in liquid crystal display
Wavelength dependency problem in device application, improves the whole penetrance and brightness uniformity of liquid crystal display, promotes display quality.
Specifically, the difference of the upper polaroid 3 and down polaroid 4 can it is different for the wiregrating period, wiregrating is of different size,
One of wiregrating height difference and wire grid material difference or a variety of combinations.
Further, for example, as shown in figure 3, the line of upper polaroid 3 and down polaroid 4 can be adjusted by the above method
Grid structure parameter and wire grid material, so that the transmitance of the light longer to wavelength of the upper polaroid 3 is higher, the lower polarisation
The transmitance of the light shorter to wavelength of piece 4 is higher, so that the light to various different wave lengths of liquid crystal display is saturating
It crosses that rate is relatively stable, improves the whole penetrance and brightness uniformity of liquid crystal display, promote display quality.It is of course also possible to
So that the transmitance of the down polaroid 4 light longer to wavelength is higher, the upper polaroid 3 light shorter to wavelength
Transmitance is higher, equally can achieve so that the transmitance of the light to various different wave lengths of liquid crystal display is relatively stable,
The whole penetrance and brightness uniformity for improving liquid crystal display, promote the purpose of display quality.
Compared with prior art, since the present invention is solved from the material of sub-wavelength nanometer wiregrating polaroid itself and structure
Certainly its wavelength dependency problem and traditional macromolecule membrane polaroid increase multilayered optical compensator film to solve wavelength dependency
Property problem is compared, and does not need additionally to increase film layer, does not increase liquid crystal display thickness, and sub-wavelength nanometer wiregrating polaroid
The operability that own material and structure are adjusted is stronger, and cost is lower, and adjustable range is more extensive.
Optionally, as shown in Figure 1, in the first embodiment of the present invention, the upper polaroid 3 and down polaroid 4 are
It is built-in, the upper substrate 1 is respectively arranged on close to the side of the lower substrate 2 and the lower substrate 2 close to the one of upper substrate 1
Side, and upper polaroid 3 is all different with the wiregrating period of down polaroid 4 and wiregrating width.
Optionally, as shown in Fig. 2, in the second embodiment of the present invention, the upper polaroid 3 be it is built-in, under described
Polaroid 4 is that external namely the upper polaroid 3 are set to the upper substrate 1 close to the side of the lower substrate 2, under described
Polaroid 4 is set to the side of the lower substrate 2 far from upper substrate 1, and the wiregrating period of upper polaroid 3 and down polaroid 4 with
And wiregrating width is all different.
In addition, in other embodiments of the invention, it is separate the upper polaroid 3 can also to be set to the upper substrate 1
The side of the lower substrate 2, and the down polaroid 4 is set to the side of the lower substrate 2 far from upper substrate 1, or by institute
Upper polaroid 3 is stated set on side of the upper substrate 1 far from the lower substrate 2, the down polaroid 4 is set to the lower substrate 2
Close to the side of upper substrate 1.
Specifically, the cross sectional shape for the nano wire that the upper polaroid 3 and down polaroid 4 use is not limited to rectangle,
Or other sections of various shapes such as round or core-shell structure.
Preferably, the wire grid material of the upper polaroid 3 and down polaroid 4 can be metal, such as aluminium, silver or gold,
It can be other wire grid materials such as the metal oxide of achievable wiregrating polarization effect.
In production, the upper polaroid 3 and down polaroid 4 are preferably made by nano-imprint process, in order to volume production
And cost control, naturally it is also possible to be made of other production methods including such as photoetching process.
In conclusion the present invention provides a kind of liquid crystal display, the upper polaroid of the liquid crystal display and lower polarisation
Piece is sub-wavelength nanometer wiregrating polaroid, and in the wire grid construction and wire grid material of upper polaroid and down polaroid at least
One is different, so that can mutually compensate through the wavelength of the light of upper polaroid and down polaroid, so as to improve Asia
Wavelength dependency problem of the wavelength wiregrating polaroid in liquid crystal display applications, improve liquid crystal display whole penetrance and
Brightness uniformity promotes display quality.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (9)
1. a kind of liquid crystal display characterized by comprising upper substrate (1), the lower base being oppositely arranged with the upper substrate (1)
Plate (2), be set to the upper substrate (1) side upper polaroid (3) and be set to the lower substrate (2) side lower polarisation
Piece (4)；
The upper polaroid (3) and down polaroid (4) are sub-wavelength nanometer wiregrating polaroid, and the upper polaroid (3)
It is different at least one in the wire grid construction and wire grid material of down polaroid (4)；
The transmitance of the upper polaroid (3) light longer to wavelength is higher, the down polaroid (4) light shorter to wavelength
The transmitance of line is higher.
2. liquid crystal display as described in claim 1, which is characterized in that the wire grid construction is defined by grid parameters,
The grid parameters include: wiregrating period, wiregrating width and wiregrating height.
3. liquid crystal display as described in claim 1, which is characterized in that the line of the upper polaroid (3) and down polaroid (4)
Grid material is metal or metal oxide.
4. liquid crystal display as claimed in claim 3, which is characterized in that the line of the upper polaroid (3) and down polaroid (4)
Grid material is aluminium, silver or gold.
5. liquid crystal display as claimed in claim 2, which is characterized in that the line of the upper polaroid (3) and down polaroid (4)
Grid cycle is different.
6. liquid crystal display as claimed in claim 2, which is characterized in that the line of the upper polaroid (3) and down polaroid (4)
Grid width is different.
7. liquid crystal display as claimed in claim 2, which is characterized in that the line of the upper polaroid (3) and down polaroid (4)
Grid height is different.
8. liquid crystal display as claimed in claim 2, which is characterized in that the line of the upper polaroid (3) and down polaroid (4)
Grid material and wiregrating period are different.
9. liquid crystal display as described in claim 1, which is characterized in that the upper polaroid (3) and down polaroid (4) use
Nano-imprint process or photoetching process production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554407.8A CN105974644B (en) | 2016-07-13 | 2016-07-13 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554407.8A CN105974644B (en) | 2016-07-13 | 2016-07-13 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105974644A CN105974644A (en) | 2016-09-28 |
| CN105974644B true CN105974644B (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610554407.8A Active CN105974644B (en) | 2016-07-13 | 2016-07-13 | Liquid crystal display |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241187B (en) * | 2016-12-23 | 2024-03-15 | 苏州星烁纳米科技有限公司 | Quantum dot polaroid, liquid crystal panel and liquid crystal display device |
| CN109212812A (en) * | 2017-07-04 | 2019-01-15 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof, display system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688938A (en) * | 2007-06-22 | 2010-03-31 | 莫克斯泰克公司 | selectively absorptive wire-grid polarizer |
| CN102636897A (en) * | 2011-02-14 | 2012-08-15 | 三星电子株式会社 | Display panel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420275B1 (en) * | 2001-08-24 | 2008-10-08 | Asahi Glass Company, Limited | Isolator and optical attenuator |
| US20070242352A1 (en) * | 2006-04-13 | 2007-10-18 | Macmaster Steven William | Wire-grid polarizers, methods of fabrication thereof and their use in transmissive displays |
| KR20070117816A (en) * | 2006-06-09 | 2007-12-13 | 삼성전자주식회사 | Polarizer, method for manufacturing the polarizer and display panel having the same |
| CN105404049B (en) * | 2016-01-04 | 2018-04-17 | 京东方科技集团股份有限公司 | A kind of liquid crystal display and display device |
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2016
- 2016-07-13 CN CN201610554407.8A patent/CN105974644B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688938A (en) * | 2007-06-22 | 2010-03-31 | 莫克斯泰克公司 | selectively absorptive wire-grid polarizer |
| CN102636897A (en) * | 2011-02-14 | 2012-08-15 | 三星电子株式会社 | Display panel |
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