CN106019454B - Wire grating polaroid and liquid crystal display device - Google Patents
Wire grating polaroid and liquid crystal display device Download PDFInfo
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- CN106019454B CN106019454B CN201610613055.9A CN201610613055A CN106019454B CN 106019454 B CN106019454 B CN 106019454B CN 201610613055 A CN201610613055 A CN 201610613055A CN 106019454 B CN106019454 B CN 106019454B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
-
- 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
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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
- G02F1/1336—Illuminating devices
- G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
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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
- G02F1/133548—Wire-grid polarisers
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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of wire grating polaroid and liquid crystal display device.The wire grating polaroid of the present invention contains blue light quantum point, and the blue light compensation wire grating polaroid sent out using blue light quantum point is prevented liquid crystal display device from colour cast occur, promotes the display quality of liquid crystal display device blue region transmitance is relatively low the problem of.The liquid crystal display device of the present invention, by setting blue light quantum point in wire grating polaroid, or blue light quantum point film layer is separately provided in liquid crystal display device, the blue light quantum point can absorb the ultraviolet light for the shortwave high-energy that blue LED is sent out and blue violet light sends out blue light, the light utilization ratio of backlight can not only be improved, and the ultraviolet light of short wavelength and blue violet light can be avoided to cause to damage to eyes, simultaneously, the blue light that blue light quantum point is sent out can compensate wire grating polaroid blue region transmitance is relatively low the problem of, prevent liquid crystal display device from colour cast occur, promote the display quality of liquid crystal display device.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of wire grating polaroids and liquid crystal display device.
Background technology
With science and technology development and social progress, people for information interchange and transmit etc. degree of dependence increasingly
Increase.And display device particularly liquid crystal display device (Liquid Crystal Display, LCD) is as information exchange and biography
The main carriers and material base passed have become more and more people's focus of attention, and are widely used in work and life
Every aspect.
For liquid crystal display device, backlight is its essential component part.In general, liquid crystal display fills
The backlight put is the blue light excitation yttroalumite sent out using blue light-emitting diode (LED, Light Emitting Diode)
Garnet (YAG) fluorescent powder forms white light after reconciling.The blue light energy that common blue LED is sent out is higher, and sends out
Optical band inevitably includes wavelength and is less than the ultraviolet light of 420nm and royal purple optical range, in blue LED as liquid
In the case of the backlight of crystal device, after watching for a long time, the excess radiation of ultraviolet light and blue violet light can cause eyes
Irreversible injury, damage health.Moreover, this some light cannot be fully utilized, so as to cause the loss of the energy.From
Energy conservation and environmental protection and protect eyes health the two aspect from the point of view of, blue LED all there are its it is intrinsic the defects of, it would be highly desirable to seek
Approach is looked for solve the problems, such as above-mentioned energy waste and unhealthful.
The operation principle of liquid crystal display device is the birefringence using liquid crystal, and the rotation of liquid crystal is controlled by voltage,
The linearly polarized light after down polaroid is made to rotate therewith, is penetrated from upper polaroid (vertical with the polarization direction of down polaroid)
Go out, so as to which upper and lower polaroid plays the role of photoswitch (or light valve) plus liquid crystal cell.The light of backlight outgoing can be decomposed into
The vertically light component of (p) and parallel (s) down polaroid absorption axiss, wherein the light (s) for being parallel to absorption axiss is absorbed by down polaroid,
Light (p) perpendicular to absorption axiss is controlled the rotation of liquid crystal by voltage, makes the linear polarization by down polaroid across down polaroid
Light (p) rotates therewith, is then passed through from upper polaroid, and the light (s) for being parallel to absorption axis direction is absorbed.Due to upper and lower
The transmitance of polaroid is respectively 38%~48%, so as to greatly reduce the whole light transmission rate of liquid crystal display device,
Brightness, contrast and transmitance of liquid crystal display device etc. are required under higher and higher trend, and traditional absorption-type polaroid is not
Incident light can be made full use of, greatly has lost light utilization efficiency, and has increased considerably the energy consumption of backlight.In addition, existing iodine
The making of molecule or dyestuff system polaroid needs multilayer resist etc., and liquid crystal display device integral thickness is not only caused to increase,
Cost improves, and reliability is poor, and more than variety of problems makes traditional absorption-type polaroid in following energy saving and slimming, open air
The application of the liquid crystal display devices display fields such as display is significantly limited.
Compared with traditional absorption-type polaroid, nano metal wiregrating polaroid can penetrate polarization direction perpendicular to wiregrating
The incident light in direction, and polarization direction is parallel to the light reflection in wiregrating direction, by increasing anti-reflection layer etc., nanometer wiregrating is inclined
Mating plate is far longer than traditional absorption-type polaroid through the ability of incident light, and transmitance is up to more than 90%, and contrast
Have 10000：1 height is very big to meet nowadays so as to increase substantially the light transmission rate of liquid crystal display device and contrast
The market demand of high transmittance and high contrast liquid crystal display device.In addition, since wire grating polaroid can be in high temperature or height
Remarkable durability is realized in humidity environment, so wire grating polaroid waits reliabilities that harsh field is required to have outdoors
Incomparable advantage.
But wire grating polaroid, with high transmittance and while high contrast, wavelength dependency is still deposited
.As shown in Figure 1, in short wavelength range, i.e., blue region, the transmitance of wire grating polaroid are relatively low.
Invention content
The purpose of the present invention is to provide a kind of wire grating polaroid, containing blue light quantum point, using blue light quantum
The blue light compensation wire grating polaroid sent out is selected blue region transmitance is relatively low the problem of, prevents liquid crystal display device from occurring
Colour cast promotes the display quality of liquid crystal display device.
The present invention also aims to provide a kind of liquid crystal display device, by setting blue light in wire grating polaroid
Quantum dot, the blue light compensation wire grating polaroid sent out using blue light quantum point blue region transmitance is relatively low the problem of,
It prevents liquid crystal display device from colour cast occur, promotes the display quality of liquid crystal display device.
The present invention also aims to provide a kind of liquid crystal display device, by the way that indigo plant is separately provided in liquid crystal display device
Light quanta point film layer, the blue light compensation wire grating polaroid sent out using blue light quantum point are relatively low in blue region transmitance
Problem prevents liquid crystal display device from colour cast occur, promotes the display quality of liquid crystal display device.
To achieve the above object, present invention firstly provides a kind of wire grating polaroid, including substrate and set on described
Metal wire grid layer on substrate；
The metal wire grid layer includes several wire grating units arranged in parallel, and the wire grating unit includes a gold medal
Belong to item and the bar shaped clearance space set on the metal strip side；
The wire grating polaroid further includes at least one of dielectric layer and anti-reflection layer, the dielectric layer and counnter attack
It penetrates layer to be set between the substrate and metal wire grid layer, when the wire grating polaroid is simultaneously comprising dielectric layer and antireflection
During layer, the upper-lower position of the dielectric layer and anti-reflection layer is unlimited；
At least one of the dielectric layer and anti-reflection layer contain blue light quantum point.
The width of the wire grating unit is 10nm-300nm；The width of the metal strip accounts for the wire grating unit
Width ratio be 0.1-0.9；The thickness of the metal strip is 10nm-500nm.
The present invention also provides a kind of liquid crystal display device, including liquid crystal display panel with entering set on the liquid crystal display panel
The backlight of light side；
The backlight includes blue LED；
The liquid crystal display panel includes：The first substrate that is oppositely arranged with second substrate, set on the first substrate with
Liquid crystal layer between second substrate, between the first substrate and second substrate and positioned at the sealing of liquid crystal layer periphery
Glue, set on the first substrate towards the first wire grating polaroid on liquid crystal layer side and set on the second substrate
Towards the second wire grating polaroid on liquid crystal layer side；
The first wire grating polaroid includes the first substrate and the metal wire grid layer on first substrate；
The metal wire grid layer includes several wire grating units arranged in parallel, and the wire grating unit includes a metal strip and sets
A bar shaped clearance space in the metal strip side；
The first wire grating polaroid further includes at least one of dielectric layer and anti-reflection layer, the dielectric layer with
Anti-reflection layer is set between first substrate and metal wire grid layer, when the first wire grating polaroid is simultaneously comprising Jie
When matter layer is with anti-reflection layer, the upper-lower position of the dielectric layer and anti-reflection layer is unlimited；
The second wire grating polaroid includes the second substrate and the metal wire grid layer on second substrate；
The metal wire grid layer includes several wire grating units arranged in parallel, and the wire grating unit includes a metal strip and sets
A bar shaped clearance space in the metal strip side；
The second wire grating polaroid further includes at least one of dielectric layer and anti-reflection layer, the dielectric layer with
Anti-reflection layer is set between second substrate and metal wire grid layer, when the second wire grating polaroid is simultaneously comprising Jie
When matter layer is with anti-reflection layer, the upper-lower position of the dielectric layer and anti-reflection layer is unlimited；
The liquid crystal display device meets at least one of following two conditions：
At least one of condition 1, the dielectric layer of the first wire grating polaroid and anti-reflection layer contain blue light amount
Sub- point；
At least one of condition 2, the dielectric layer of the second wire grating polaroid and anti-reflection layer contain blue light amount
Sub- point.
The width of the wire grating unit is 10nm-300nm；The width of the metal strip accounts for the wire grating unit
Width ratio be 0.1-0.9；The thickness of the metal strip is 10nm-500nm.
The present invention also provides another liquid crystal display device, including liquid crystal display panel with being set on the liquid crystal display panel
The backlight of incident side；
The backlight includes blue LED；
The liquid crystal display panel includes：The first substrate that is oppositely arranged with second substrate, set on the first substrate with
Liquid crystal layer between second substrate, between the first substrate and second substrate and positioned at the sealing of liquid crystal layer periphery
Glue, set on the first substrate towards the first wire grating polaroid on liquid crystal layer side and set on the second substrate
Towards the second wire grating polaroid on liquid crystal layer side；
The first wire grating polaroid includes the first substrate and the metal wire grid layer on first substrate；
The metal wire grid layer includes several wire grating units arranged in parallel, and the wire grating unit includes a metal strip and sets
A bar shaped clearance space in the metal strip side；
The second wire grating polaroid includes the second substrate and the metal wire grid layer on second substrate；
The metal wire grid layer includes several wire grating units arranged in parallel, and the wire grating unit includes a metal strip and sets
A bar shaped clearance space in the metal strip side；
The liquid crystal display device meets at least one of following four condition：
Blue light quantum point film layer is equipped between condition 1, the first substrate and the first wire grating polaroid；
Blue light quantum point film layer is equipped between condition 2, the second substrate and the second wire grating polaroid；
Condition 3, outer surface of the first substrate far from the first wire grating polaroid side are equipped with blue light amount
Son point film layer；
Condition 4, outer surface of the second substrate far from the second wire grating polaroid side are equipped with blue light amount
Son point film layer.
The width of the wire grating unit is 10nm-300nm；The width of the metal strip accounts for the wire grating unit
Width ratio be 0.1-0.9；The thickness of the metal strip is 10nm-500nm.
In the first embodiment of the liquid crystal display device, the liquid crystal display device is only in the first substrate and first
Blue light quantum point film layer is equipped between wire grating polaroid.
In the second embodiment of the liquid crystal display device, the liquid crystal display device is only in the second substrate and second
Blue light quantum point film layer is equipped between wire grating polaroid.
In the 3rd embodiment of the liquid crystal display device, the liquid crystal display device is only in the second substrate far from institute
The outer surface for stating the second wire grating polaroid side is equipped with blue light quantum point film layer.
In the fourth embodiment of the liquid crystal display device, the liquid crystal display device is only in the first substrate far from institute
The outer surface for stating the first wire grating polaroid side is equipped with blue light quantum point film layer.
Beneficial effects of the present invention：A kind of wire grating polaroid provided by the invention contains blue light quantum point, utilizes indigo plant
Blue light that light quanta point is sent out compensation wire grating polaroid prevents liquid crystal display from filling blue region transmitance is relatively low the problem of
It puts and colour cast occurs, promote the display quality of liquid crystal display device.A kind of liquid crystal display device provided by the invention, by metal
Blue light quantum point in wiregrating polaroid is set or blue light quantum point film layer is separately provided in liquid crystal display device, the indigo plant
Light quanta point can absorb the ultraviolet light for the shortwave high-energy that blue LED is sent out and blue violet light sends out blue light, can not only
The light utilization ratio of backlight is enough improved, and the ultraviolet light of short wavelength and blue violet light can be avoided to cause to damage to eyes, together
When, blue light that blue light quantum point is sent out can compensate wire grating polaroid blue region transmitance is relatively low the problem of, prevent
There is colour cast in liquid crystal display device, promotes the display quality of liquid crystal display device.
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with the detailed of the present invention
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
Description of the drawings
Below in conjunction with the accompanying drawings, it is described in detail by the specific embodiment to the present invention, technical scheme of the present invention will be made
And other beneficial effects are apparent.
In attached drawing,
Fig. 1 is the schematic diagram of the light penetration curve of existing wire grating polaroid；
Fig. 2 is the light penetration curve of existing wire grating polaroid and the luminescent spectrum curve of blue light quantum point
Schematic diagram；
Fig. 3 is the structure diagram of an embodiment of the wire grating polaroid of the present invention；
Fig. 4 is the structure diagram of an embodiment of the first liquid crystal display device of the present invention；
Fig. 5 is the structure diagram of the first embodiment of second of liquid crystal display device of the present invention；
Fig. 6 is the structure diagram of the second embodiment of second of liquid crystal display device of the present invention；
Fig. 7 is the structure diagram of the 3rd embodiment of second of liquid crystal display device of the present invention；
Fig. 8 is the structure diagram of the fourth embodiment of second of liquid crystal display device of the present invention.
Specific embodiment
The technological means and its effect taken further to illustrate the present invention, below in conjunction with the preferred implementation of the present invention
Example and its attached drawing are described in detail.
Referring to Fig. 2, for the light penetration curve of existing wire grating polaroid and the luminous light of blue light quantum point
The schematic diagram of spectral curve, from figure 2 it can be seen that the luminosity curve of blue light quantum point can substantially cover wire grating polaroid
The relatively low blue wavelength range of transmitance, therefore, the present invention is based on this principles, and wire grating is made up using blue light quantum point
Polaroid prevents liquid crystal display device from the problems such as colour cast occur blue region transmitance is relatively low the problem of.
Referring to Fig. 3, the present invention provides a kind of wire grating polaroid, including substrate 10 and on the substrate 10
Metal wire grid layer 20；
The metal wire grid layer 20 includes several wire grating units 21 arranged in parallel, and the wire grating unit 21 wraps
Include a metal strip 201 and the bar shaped clearance space 202 set on 201 side of metal strip；
The wire grating polaroid further includes at least one of dielectric layer 30 and anti-reflection layer 40, the dielectric layer 30
It is set between the substrate 10 and metal wire grid layer 20 with anti-reflection layer 40, when the wire grating polaroid is simultaneously comprising Jie
When matter layer 30 is with anti-reflection layer 40, the upper-lower position of the dielectric layer 30 and anti-reflection layer 40 is unlimited；
At least one of the dielectric layer 30 and anti-reflection layer 40 contain blue light quantum point.
Specifically, referring to Fig. 3, an embodiment of the wire grating polaroid for the present invention, in this embodiment, described
Wire grating polaroid is simultaneously including dielectric layer 30 and anti-reflection layer 40, and dielectric layer 30 and anti-reflection layer 40 are sequentially arranged in lining
On bottom 10, the dielectric layer 30 contains blue light quantum point.
Specifically, the width (i.e. the period of wire grating) of the wire grating unit 21 is 10nm-300nm, preferably
10nm-100nm。
Specifically, the width of the metal strip 201 accounts for ratio (the i.e. wire grating of the width of the wire grating unit 21
Duty ratio) be 0.1-0.9.
Specifically, the thickness of the metal strip 201 is 10nm-500nm, preferably 50nm~500nm.
Specifically, the material of the metal wire grid layer 20 is included in aluminium (Al), chromium (Cr), gold (Au) and nickel (Ni) extremely
Few one kind；
Specifically, the material of the substrate 10 includes glass, polyimides (PI) and polymethyl methacrylate (PMMA)
At least one of.
Specifically, the anti-reflection layer 40 is antireflection film commonly used in the art, antireflective coating or anti-reflection film, it is specific
Details are not described herein again for structure and material composition.When setting anti-reflection layer 40 in wire grating polaroid, metal wire can be improved
The light transmission rate of grid polaroid.
Specifically, the material of the dielectric layer 30 is usually high-index material, such as polymethyl methacrylate (PMMA)
Deng.When in wire grating polaroid set dielectric layer 30 when, by dielectric layer 30 select suitable material, thicknesses of layers and
Refractive index can improve the efficiency of transmission of specific wavelength.
Specifically, the blue light quantum point being capable of ultraviolet light and blue violet light of the absorbing wavelength less than 420nm.
Specifically, the wave-length coverage for the blue light that the blue light quantum point is sent out is 420nm~480nm.
Above-mentioned wire grating polaroid, by setting blue light quantum point in anti-reflection layer or dielectric layer, using blue
Ultraviolet light and blue violet light the excitation blue light quantum point for the shortwave high-energy that light emitting diode is sent out send out blue light, can not only improve
The light utilization ratio of backlight, and the ultraviolet light of short wavelength and blue violet light can be avoided to cause to damage to eyes, meanwhile, it utilizes
Blue light that blue light quantum point is sent out compensation wire grating polaroid prevents liquid crystal display blue region transmitance is relatively low the problem of
There is colour cast in device, promotes the display quality of liquid crystal display device.
Referring to Fig. 4, based on above-mentioned wire grating polaroid, the present invention provides the first liquid crystal display device, including liquid
LCD panel 100 and the backlight 200 set on 100 incident side of liquid crystal display panel；
The backlight 200 includes blue LED；
The liquid crystal display panel 100 includes：The first substrate 51 that is oppositely arranged with second substrate 52, set on described first
Liquid crystal layer 70 between substrate 51 and second substrate 52, between the first substrate 51 and second substrate 52 and positioned at described
The fluid sealant 80 of the periphery of liquid crystal layer 70, set on the first substrate 51 towards the first wire grating polarisation on 70 side of liquid crystal layer
Piece 91 and set on the second substrate 52 towards the second wire grating polaroid 92 on 70 side of liquid crystal layer；
The first wire grating polaroid 91 includes the first substrate 11 and the metal on first substrate 11
Wire-grid layer 20；The metal wire grid layer 20 includes several wire grating units 21 arranged in parallel, the wire grating unit 21
A bar shaped clearance space 202 including a metal strip 201 and set on 201 side of metal strip；
The first wire grating polaroid 91 further includes at least one of dielectric layer 30 and anti-reflection layer 40, is given an account of
Matter layer 30 and anti-reflection layer 40 are set between first substrate 11 and metal wire grid layer 20, when first wire grating is inclined
When mating plate 91 is simultaneously comprising dielectric layer 30 with anti-reflection layer 40, the upper-lower position of the dielectric layer 30 and anti-reflection layer 40 is unlimited；
The second wire grating polaroid 92 includes the second substrate 12 and the metal on second substrate 12
Wire-grid layer 20；The metal wire grid layer 20 includes several wire grating units 21 arranged in parallel, the wire grating unit 21
A bar shaped clearance space 202 including a metal strip 201 and set on 201 side of metal strip；
The second wire grating polaroid 92 further includes at least one of dielectric layer 30 and anti-reflection layer 40, is given an account of
Matter layer 30 and anti-reflection layer 40 are set between second substrate 12 and metal wire grid layer 20, when second wire grating is inclined
When mating plate 92 is simultaneously comprising dielectric layer 30 with anti-reflection layer 40, the upper-lower position of the dielectric layer 30 and anti-reflection layer 40 is unlimited；
The first wire grating polaroid 91 and the second wire grating polaroid 92 meet in following two conditions extremely
It is one few：
Condition 1, the first wire grating polaroid 91 at least one of dielectric layer 30 and anti-reflection layer 40 contain
Blue light quantum point；
Condition 2, the second wire grating polaroid 92 at least one of dielectric layer 30 and anti-reflection layer 40 contain
Blue light quantum point.
Specifically, referring to Fig. 4, for the present invention the first liquid crystal display device an embodiment, in this embodiment,
The first wire grating polaroid 91 and the second wire grating polaroid 92 include dielectric layer 30 and anti-reflection layer 40 simultaneously,
And dielectric layer 30 and anti-reflection layer 40 are sequentially arranged on the first substrate 11 and the second substrate 12.
Specifically, in this embodiment, the dielectric layer 30 of the second wire grating polaroid 92 contains blue light quantum point.
Specifically, the width (i.e. the period of wire grating) of the wire grating unit 21 is 10nm-300nm, preferably
10nm-100nm。
Specifically, the width of the metal strip 201 accounts for ratio (the i.e. wire grating of the width of the wire grating unit 21
Duty ratio) be 0.1-0.9.
Specifically, the thickness of the metal strip 201 is 10nm-500nm, preferably 50nm~500nm.
Specifically, the material of the metal wire grid layer 20 is included in aluminium (Al), chromium (Cr), gold (Au) and nickel (Ni) extremely
Few one kind.
Specifically, the anti-reflection layer 40 is antireflection film commonly used in the art, antireflective coating or anti-reflection film, it is specific
Details are not described herein again for structure and material composition.When setting anti-reflection layer 40 in wire grating polaroid, metal wire can be improved
The light transmission rate of grid polaroid.
Specifically, the material of the dielectric layer 30 is usually high-index material, such as polymethyl methacrylate (PMMA)
Deng.When in wire grating polaroid set dielectric layer 30 when, by dielectric layer 30 select suitable material, thicknesses of layers and
Refractive index can improve the efficiency of transmission of specific wavelength.
Specifically, the material of 11 and second substrate 12 of the first substrate respectively includes glass, polyimides (PI) and gathers
At least one of methyl methacrylate (PMMA).
Specifically, the blue light quantum point being capable of ultraviolet light and blue violet light of the absorbing wavelength less than 420nm.
Specifically, the wave-length coverage for the blue light that the blue light quantum point is sent out is 420nm~480nm.
Specifically, the first substrate 51 and second substrate 52 can be respectively served as the first wire grating polaroid 91 and the
The substrate of two wire grating polaroids 92, so as to save the setting of the first substrate 11 and the second substrate 12.
Specifically, the first substrate 51 is color membrane substrates, the second substrate 52 is thin-film transistor array base-plate.
Above-mentioned liquid crystal display device replaces traditional absorption-type polaroid by using wire grating polaroid, can improve
The transmitance of liquid crystal display device；By setting blue light quantum point in wire grating polaroid, using two pole of blue-light-emitting
Ultraviolet light and blue violet light the excitation blue light quantum point for the shortwave high-energy that pipe is sent out send out blue light, can not only improve backlight
200 light utilization ratio, and the ultraviolet light of short wavelength and blue violet light can be avoided to cause to damage to eyes, meanwhile, utilize indigo plant
Blue light that light quanta point is sent out compensation wire grating polaroid prevents liquid crystal display from filling blue region transmitance is relatively low the problem of
It puts and colour cast occurs, promote the display quality of liquid crystal display device.
Fig. 5-8 are please referred to, the present invention also provides second of liquid crystal display device, including liquid crystal display panel 100 with being set on
The backlight 200 of 100 incident side of liquid crystal display panel；
The backlight 200 includes blue LED；
The liquid crystal display panel 100 includes：The first substrate 51 that is oppositely arranged with second substrate 52, set on described first
Liquid crystal layer 70 between substrate 51 and second substrate 52, between the first substrate 51 and second substrate 52 and positioned at described
The fluid sealant 80 of the periphery of liquid crystal layer 70, set on the first substrate 51 towards the first wire grating polarisation on 70 side of liquid crystal layer
Piece 91 and set on the second substrate 52 towards the second wire grating polaroid 92 on 70 side of liquid crystal layer；
The first wire grating polaroid 91 includes the first substrate 11 and the metal on first substrate 11
Wire-grid layer 20；The metal wire grid layer 20 includes several wire grating units 21 arranged in parallel, the wire grating unit 21
A bar shaped clearance space 202 including a metal strip 201 and set on 201 side of metal strip；
The second wire grating polaroid 92 includes the second substrate 12 and the metal on second substrate 12
Wire-grid layer 20；The metal wire grid layer 20 includes several wire grating units 21 arranged in parallel, the wire grating unit 21
A bar shaped clearance space 202 including a metal strip 201 and set on 201 side of metal strip；
The liquid crystal display device meets at least one of following four condition：
Blue light quantum point film layer 60 is equipped between condition 1,51 and first wire grating polaroid 91 of the first substrate；
Blue light quantum point film layer 60 is equipped between condition 2,52 and second wire grating polaroid 92 of the second substrate；
Condition 3, outer surface of the first substrate 51 far from 91 side of the first wire grating polaroid are equipped with indigo plant
Light quanta point film layer 60；
Condition 4, outer surface of the second substrate 52 far from 92 side of the second wire grating polaroid are equipped with indigo plant
Light quanta point film layer 60.
Specifically, the width (i.e. the period of wire grating) of the wire grating unit 21 is 10nm-300nm, preferably
10nm-100nm。
Specifically, the width of the metal strip 201 accounts for ratio (the i.e. wire grating of the width of the wire grating unit 21
Duty ratio) be 0.1-0.9.
Specifically, the thickness of the metal strip 201 is 10nm-500nm, preferably 50nm~500nm.
Specifically, the material of the metal wire grid layer 20 is included in aluminium (Al), chromium (Cr), gold (Au) and nickel (Ni) extremely
Few one kind.
Specifically, the material of 11 and second substrate 12 of the first substrate respectively includes glass, polyimides (PI) and gathers
At least one of methyl methacrylate (PMMA).
Specifically, the blue light quantum point being capable of ultraviolet light and blue violet light of the absorbing wavelength less than 420nm.
Specifically, the wave-length coverage for the blue light that the blue light quantum point is sent out is 420nm~480nm.
Specifically, the first substrate 51 and second substrate 52 can be respectively served as the first wire grating polaroid 91 and the
The substrate of two wire grating polaroids 92, so as to save the setting of the first substrate 11 and the second substrate 12.
Specifically, the first wire grating polaroid 91 can also be included in dielectric layer 30 and anti-reflection layer 40 at least
One kind, the dielectric layer 30 and anti-reflection layer 40 are set between first substrate 11 and metal wire grid layer 20, when described the
When one wire grating polaroid 91 is simultaneously comprising dielectric layer 30 with anti-reflection layer 40, the dielectric layer 30 is upper with anti-reflection layer 40
Lower position is unlimited.
Specifically, the second wire grating polaroid 92 can also be included in dielectric layer 30 and anti-reflection layer 40 at least
One kind, the dielectric layer 30 and anti-reflection layer 40 are set between second substrate 12 and metal wire grid layer 20, when described the
When two wire grating polaroids 92 are simultaneously comprising dielectric layer 30 with anti-reflection layer 40, the dielectric layer 30 is upper with anti-reflection layer 40
Lower position is unlimited.
Specifically, the anti-reflection layer 40 is antireflection film commonly used in the art, antireflective coating or anti-reflection film, it is specific
Details are not described herein again for structure and material composition.When setting anti-reflection layer 40 in wire grating polaroid, metal wire can be improved
The light transmission rate of grid polaroid.
Specifically, the material of the dielectric layer 30 is usually high-index material, such as polymethyl methacrylate (PMMA)
Deng.When in wire grating polaroid set dielectric layer 30 when, by dielectric layer 30 select suitable material, thicknesses of layers and
Refractive index can improve efficiency of transmission of the wire grating polaroid to specific wavelength.
Specifically, the first substrate 51 is color membrane substrates, the second substrate 52 is thin-film transistor array base-plate.
As shown in figure 5, the first embodiment of second of liquid crystal display device for the present invention, in the first embodiment, only
Blue light quantum point film layer 60 is equipped between the 52 and second wire grating polaroid 92 of second substrate.
As shown in fig. 6, the second embodiment of second of liquid crystal display device for the present invention, in the second embodiment, only
Blue light quantum point film layer 60 is equipped between the 51 and first wire grating polaroid 91 of first substrate.
As shown in fig. 7, the 3rd embodiment of second of liquid crystal display device for the present invention, in the 3rd embodiment, only
Blue light quantum point film layer is equipped on outer surface of the second substrate 52 far from 92 side of the second wire grating polaroid
60 namely the liquid crystal display panel 100 incident side set a blue light quantum point film layer 60.
As shown in figure 8, the fourth embodiment of second of liquid crystal display device for the present invention, in the fourth embodiment, only
Blue light quantum point film layer is equipped on outer surface of the first substrate 51 far from 91 side of the first wire grating polaroid
60 namely the light emission side setting blue light quantum point film layer 60 in the liquid crystal display panel 100.
Above-mentioned liquid crystal display device replaces traditional absorption-type polaroid by using wire grating polaroid, can improve
The transmitance of liquid crystal display device；By the way that blue light quantum point film layer 60 is separately provided in liquid crystal display device, using blue
Ultraviolet light and blue violet light the excitation blue light quantum point for the shortwave high-energy that light emitting diode is sent out send out blue light, can not only improve
The light utilization ratio of backlight 200, and the ultraviolet light of short wavelength and blue violet light can be avoided to cause to damage to eyes, meanwhile,
The blue light compensation wire grating polaroid sent out using blue light quantum point prevents liquid crystal blue region transmitance is relatively low the problem of
There is colour cast in display device, promotes the display quality of liquid crystal display device.
In conclusion the present invention provides a kind of wire grating polaroid and liquid crystal display device.The wire grating of the present invention
Polaroid, containing blue light quantum point, the blue light compensation wire grating polaroid sent out using blue light quantum point is saturating in blue region
The problem of rate is relatively low is crossed, prevents liquid crystal display device from colour cast occur, promotes the display quality of liquid crystal display device；The liquid of the present invention
Crystal device, by setting blue light quantum point in wire grating polaroid or being separately provided in liquid crystal display device
Blue light quantum point film layer, the blue light quantum point can absorb the shortwave high-energy that blue LED is sent out ultraviolet light and
Blue violet light sends out blue light, can not only improve the light utilization ratio of backlight, and can avoid the ultraviolet light and indigo plant of short wavelength
Purple light causes to damage to eyes, meanwhile, the blue light that blue light quantum point is sent out can compensate wire grating polaroid in blue region
The problem of transmitance is relatively low prevents liquid crystal display device from colour cast occur, promotes the display quality of liquid crystal display device.
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 deformation are made in design, and all these changes and deformation should all belong to the claims in the present invention
Protection domain.
Claims (10)
- A kind of 1. wire grating polaroid, which is characterized in that the metal including substrate (10) and on the substrate (10) Wire-grid layer (20)；The metal wire grid layer (20) includes several wire grating units (21) arranged in parallel, the wire grating unit (21) A bar shaped clearance space (202) including a metal strip (201) and set on metal strip (201) side；The wire grating polaroid further includes at least one of dielectric layer (30) and anti-reflection layer (40), the dielectric layer (30) it is set between the substrate (10) and metal wire grid layer (20) with anti-reflection layer (40), when the wire grating polaroid During simultaneously comprising dielectric layer (30) with anti-reflection layer (40), the upper-lower position of the dielectric layer (30) and anti-reflection layer (40) is not Limit；At least one of the dielectric layer (30) and anti-reflection layer (40) contain blue light quantum point；The blue light quantum point can absorbing wavelength be less than 420nm ultraviolet light and blue violet light, what the blue light quantum point was sent out The wave-length coverage of blue light is 420nm~480nm.
- 2. wire grating polaroid as described in claim 1, which is characterized in that the width of the wire grating unit (21) is 10nm-300nm；The ratio that the width of the metal strip (201) accounts for the width of the wire grating unit (21) is 0.1-0.9； The thickness of the metal strip (201) is 10nm-500nm.
- 3. a kind of liquid crystal display device, which is characterized in that including liquid crystal display panel (100) with being set on the liquid crystal display panel (100) backlight (200) of incident side；The backlight (200) is including blue LED；The liquid crystal display panel (100) includes：The first substrate (51) that is oppositely arranged with second substrate (52), set on described the Liquid crystal layer (70) between one substrate (51) and second substrate (52), set on the first substrate (51) and second substrate (52) it Between and the fluid sealant (80) positioned at the liquid crystal layer (70) periphery, set on the first substrate (51) towards liquid crystal layer (70) side On the first wire grating polaroid (91) and set on the second substrate (52) towards second on liquid crystal layer (70) side Wire grating polaroid (92)；Gold of the first wire grating polaroid (91) including the first substrate (11) and on first substrate (11) Belong to wire-grid layer (20)；The metal wire grid layer (20) includes several wire grating units (21) arranged in parallel, the metal wire A bar shaped clearance space (202) of the grid unit (21) including a metal strip (201) and set on metal strip (201) side；The first wire grating polaroid (91) further includes at least one of dielectric layer (30) and anti-reflection layer (40), described Dielectric layer (30) and anti-reflection layer (40) are set between first substrate (11) and metal wire grid layer (20), when described first Wire grating polaroid (91) while comprising dielectric layer (30) and during anti-reflection layer (40), the dielectric layer (30) and anti-reflection layer (40) upper-lower position is unlimited；Gold of the second wire grating polaroid (92) including the second substrate (12) and on second substrate (12) Belong to wire-grid layer (20)；The metal wire grid layer (20) includes several wire grating units (21) arranged in parallel, the metal wire A bar shaped clearance space (202) of the grid unit (21) including a metal strip (201) and set on metal strip (201) side；The second wire grating polaroid (92) further includes at least one of dielectric layer (30) and anti-reflection layer (40), described Dielectric layer (30) and anti-reflection layer (40) are set between second substrate (12) and metal wire grid layer (20), when described second Wire grating polaroid (92) while comprising dielectric layer (30) and during anti-reflection layer (40), the dielectric layer (30) and anti-reflection layer (40) upper-lower position is unlimited；The liquid crystal display device meets at least one of following two conditions：Condition 1, the first wire grating polaroid (91) at least one of dielectric layer (30) and anti-reflection layer (40) contain There is blue light quantum point；Condition 2, the second wire grating polaroid (92) at least one of dielectric layer (30) and anti-reflection layer (40) contain There is blue light quantum point；The blue light quantum point can absorbing wavelength be less than 420nm ultraviolet light and blue violet light, what the blue light quantum point was sent out The wave-length coverage of blue light is 420nm~480nm.
- 4. liquid crystal display device as claimed in claim 3, which is characterized in that the width of the wire grating unit (21) is 10nm-300nm；The ratio that the width of the metal strip (201) accounts for the width of the wire grating unit (21) is 0.1-0.9； The thickness of the metal strip (201) is 10nm-500nm.
- 5. a kind of liquid crystal display device, which is characterized in that including liquid crystal display panel (100) with being set on the liquid crystal display panel (100) backlight (200) of incident side；The backlight (200) is including blue LED；The liquid crystal display panel (100) includes：The first substrate (51) that is oppositely arranged with second substrate (52), set on described the Liquid crystal layer (70) between one substrate (51) and second substrate (52), set on the first substrate (51) and second substrate (52) it Between and the fluid sealant (80) positioned at the liquid crystal layer (70) periphery, set on the first substrate (51) towards liquid crystal layer (70) side On the first wire grating polaroid (91) and set on the second substrate (52) towards second on liquid crystal layer (70) side Wire grating polaroid (92)；Gold of the first wire grating polaroid (91) including the first substrate (11) and on first substrate (11) Belong to wire-grid layer (20)；The metal wire grid layer (20) includes several wire grating units (21) arranged in parallel, the metal wire A bar shaped clearance space (202) of the grid unit (21) including a metal strip (201) and set on metal strip (201) side；Gold of the second wire grating polaroid (92) including the second substrate (12) and on second substrate (12) Belong to wire-grid layer (20)；The metal wire grid layer (20) includes several wire grating units (21) arranged in parallel, the metal wire A bar shaped clearance space (202) of the grid unit (21) including a metal strip (201) and set on metal strip (201) side；The liquid crystal display device meets at least one of following four condition：Blue light quantum point film layer (60) is equipped between condition 1, the first substrate (51) and the first wire grating polaroid (91)；Blue light quantum point film layer (60) is equipped between condition 2, the second substrate (52) and the second wire grating polaroid (92)；The outer surface of condition 3, the first substrate (51) far from the first wire grating polaroid (91) side is equipped with indigo plant Light quanta point film layer (60)；The outer surface of condition 4, the second substrate (52) far from the second wire grating polaroid (92) side is equipped with indigo plant Light quanta point film layer (60)；The blue light quantum point can absorbing wavelength be less than 420nm ultraviolet light and blue violet light, what the blue light quantum point was sent out The wave-length coverage of blue light is 420nm~480nm.
- 6. liquid crystal display device as claimed in claim 5, which is characterized in that the width of the wire grating unit (21) is 10nm-300nm；The ratio that the width of the metal strip (201) accounts for the width of the wire grating unit (21) is 0.1-0.9； The thickness of the metal strip (201) is 10nm-500nm.
- 7. liquid crystal display device as claimed in claim 5, which is characterized in that only in the first substrate (51) and the first metal Blue light quantum point film layer (60) is equipped between wiregrating polaroid (91).
- 8. liquid crystal display device as claimed in claim 5, which is characterized in that only in the second substrate (52) and the second metal Blue light quantum point film layer (60) is equipped between wiregrating polaroid (92).
- 9. liquid crystal display device as claimed in claim 5, which is characterized in that only in the second substrate (52) far from described the The outer surface of two wire grating polaroid (92) sides is equipped with blue light quantum point film layer (60).
- 10. liquid crystal display device as claimed in claim 5, which is characterized in that only in the first substrate (51) far from described The outer surface of first wire grating polaroid (91) side is equipped with blue light quantum point film layer (60).
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| CN107703672A (en) * | 2017-11-21 | 2018-02-16 | 武汉华星光电技术有限公司 | Array base palte and preparation method thereof, flexible display panels, flexible display |
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| CN108803124B (en) * | 2018-06-27 | 2021-05-28 | 武汉华星光电技术有限公司 | Curved liquid crystal display screen and manufacturing method thereof |
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