CN109100825A - Polarizer and display device - Google Patents
Polarizer and display device Download PDFInfo
- Publication number
- CN109100825A CN109100825A CN201811161983.1A CN201811161983A CN109100825A CN 109100825 A CN109100825 A CN 109100825A CN 201811161983 A CN201811161983 A CN 201811161983A CN 109100825 A CN109100825 A CN 109100825A
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- Prior art keywords
- film layer
- optical film
- uniaxial optical
- prism
- plate
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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
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
-
- 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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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
The invention relates to a polarizer and a display device. The polarizer comprises a first single optical axis optical film layer, a second single optical axis optical film layer and a polarizing layer, wherein the second single optical axis optical film layer is arranged on the first single optical axis optical film layer, the extraordinary refractive index of the second single optical axis optical film layer is greater than the ordinary refractive index of the first single optical axis optical film layer, the second single optical axis optical film layer comprises a plate-shaped part and a plurality of prism parts which are formed on one side of the plate-shaped part and arranged at intervals, the prism parts are all accommodated in the first single optical axis optical film layer, and the prism parts are all of triangular prism structures or triangular pyramid structures; the polarizing layer is laminated on a side of the plate-shaped portion away from the prism portion. The polaroid can improve visual angle color cast and has better panel penetration rate.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of polaroid and display device.
Background technique
Existing large scale display panel include LCD (Liquid Crystal Display, liquid crystal display) panel and
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) panel etc., wherein LCD panel includes VA
(Vertical Alignment, vertical arrangement) liquid crystal display panel and IPS (In-Plane Switching, plane conversion) liquid crystal surface
Plate etc., there are higher production efficiencys and low manufacturing cost to obtain advantage, but optics compared to IPS liquid crystal display panel for VA type liquid crystal display panel
Optical property defect is obtained there are more apparent compared to IPS liquid crystal display panel in nature, especially large size panel is in business application side
Face needs biggish visual angle to present, and VA type liquid crystal display panel, which is rapidly saturated in big visual angle brightness with voltage, causes visual angle image quality to when
Colour cast is serious compared to image quality deterioration is faced, and there are problems that colour cast.
VA type liquid crystal technology solve visual angle colour cast mode be by R (red), G (green), B (indigo plant) each sub-pixel it is subdivided based on
Sub-pixel, so that whole big visual angle brightness is closer to face with voltage change, it is this to give difference by spatially primary and secondary pixel
Driving voltage solve the mode of the defect of visual angle colour cast, generally require redesign metal routing or switch element to drive time
Pixel causes light-permeable open region sacrifice, influences panel penetrance.
Summary of the invention
Based on this, it is necessary to which visual angle colour cast and the preferable polaroid of panel penetrance can be improved by providing one kind.
In addition, additionally providing a kind of display device.
A kind of polaroid, comprising:
First uniaxial optical film layer；
The second uniaxial optical film layer on the first uniaxial optical film layer, the second uniaxial optics are set
The extraordinary ray refractive index of film layer is greater than the ordinary refraction index of the first uniaxial optical film layer, the second uniaxial light
Film layer is learned to include plate-like portion and be formed in multiple spaced prism portions on the side of the plate-like portion, multiple prism portions
It is housed in the first uniaxial optical film layer, wherein multiple prism portions are selected from triangular prism structure and triangular pyramid
One of structure, when multiple prism portions are triangular prism structure, a side in each prism portion with it is described
Plate-like portion fits, when multiple prism portions are trigone wimble structure, the bottom surface in each prism portion and the plate
Portion fits；
Polarization layer is layered on side of the plate-like portion far from the prism portion.
Above-mentioned polaroid by the way that the second uniaxial optical film layer is arranged between the first uniaxial optical film layer and polarization layer,
The extraordinary ray refractive index of second uniaxial optical film layer is greater than the ordinary refraction index of the first uniaxial optical film layer, and light is by the
One uniaxial optical film layer travels to the second uniaxial optical film layer, since the difference of refractive index can generate refraction or diffusion now
As multiple prism portions of the second uniaxial optical film layer are triangular prism structure or trigone wimble structure, and direction of travel and first is singly
The light of the interface out of plumb of optical axis optical film layer and the second uniaxial optical film layer can allow positive visual angle light energy to be assigned to side view
Angle, the image quality for allowing side view angle that can watch positive visual angle are presented, and solve the problems, such as the big visual angle colour cast of display device；Meanwhile it showing
Panel does not need to divide each sub-pixel of RGB as main pixel and sub-pixel structure, and redesign metal routing or TFT element is avoided
Sub-pixel is driven, light-permeable open region sacrifice is caused, influences panel penetrance.Therefore, above-mentioned polaroid can not only improve view
Role is inclined, and panel penetrance is preferable.
The ordinary refraction index of the first uniaxial optical film layer is 1.0~2.5 in one of the embodiments,；And/
Or, the extraordinary ray refractive index of the second uniaxial optical film layer is 1.0~2.5.
The extraordinary ray refractive index of the second uniaxial optical film layer and first list in one of the embodiments,
The difference of the ordinary refraction index of optical axis optical film layer is 0.01~1.5.
Multiple prism portions are triangular prism structure in one of the embodiments, and multiple prism portions are parallel
Arrangement, the distance between the incline of the prism portion of adjacent two far from the plate-like portion side are greater than or equal to each described
Two incline the distance between of the prism portion close to the plate-like portion.
Multiple prism portions are trigone wimble structure in one of the embodiments, and multiple prism portions are in two dimension
Matrix arrangement, each prism portion has the vertex opposite with the bottom surface, by the institute in two adjacent prism portions
State the line between vertex and perpendicular to the vertical plane of the bottom surface in two adjacent prism portions and described adjacent
The bottom surface intersection in two prism portions, the vertical plane are described with one 's in two adjacent prism portions
Bottom surface has intersection, and the length of the intersection is less than or equal to the length of the line.
The material of the first uniaxial optical film layer is smectic material in one of the embodiments,；And/
Or, the material of the second uniaxial optical film layer is nematic liquid crystal molecular material.
It in one of the embodiments, further include protective layer, the protective layer is layered in the first uniaxial optical film
Layer is far from the side of the second uniaxial optical film layer.
It in one of the embodiments, further include protective layer, the protective layer is layered in the plate-like portion and the polarization
Between layer.
A kind of polaroid, comprising:
First uniaxial optical film layer；
The second uniaxial optical film layer on the first uniaxial optical film layer, the second uniaxial optics are set
The extraordinary ray refractive index of film layer is greater than the ordinary refraction index of the first uniaxial optical film layer, the second uniaxial light
Film layer is learned to include plate-like portion and be formed in multiple spaced prism portions on the side of the plate-like portion, multiple prism portions
It is housed in the first uniaxial optical film layer, wherein multiple prism portions are triangular prism structure, multiple ribs
Parallel arrangement, a side in each prism portion fit with the plate-like portion along a straight line in mirror portion, two adjacent institutes
The distance between the incline of prism portion far from the plate-like portion side is stated more than or equal to each prism portion close to the plate
The distance between two inclines in shape portion；
Polarization layer is layered on side of the plate-like portion far from the prism portion.
A kind of display device, including backlight, display panel and above-mentioned polaroid, the display panel is located at the back
The side of light source, the polaroid is between the display panel and the backlight；Alternatively, the polaroid is positioned at described
Side of the display panel far from the backlight.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the display device of an embodiment；
Fig. 2 is the structural schematic diagram of the backlight of display device shown in FIG. 1；
Fig. 3 is the structural schematic diagram of the polaroid of display device shown in FIG. 1；
Fig. 4 is the structural schematic diagram of the second uniaxial optical film layer of polaroid shown in Fig. 3；
Fig. 5 is the structural schematic diagram for the second uniaxial optical film layer that prism portion shown in Fig. 4 is triangular prism structure；
Fig. 6 is the structural schematic diagram of another angle of the second uniaxial optical film layer shown in fig. 5；
Fig. 7 is the structural schematic diagram for the second uniaxial optical film layer that prism portion shown in Fig. 4 is trigone wimble structure；
Fig. 8 is the structural schematic diagram of another angle of the second uniaxial optical film layer shown in Fig. 7；
Fig. 9 is the structural schematic diagram of another angle of the second uniaxial optical film layer shown in Fig. 7；
Figure 10 is that the first uniaxial optical film layer of polaroid shown in Fig. 3 and the structure of the second uniaxial optical film layer are shown
It is intended to；
Figure 11 is the structural schematic diagram of the polaroid of another embodiment of display device shown in FIG. 1；
Figure 12 is the structural schematic diagram of the upper polaroid of display device shown in FIG. 1.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
Body embodiment purpose, it is not intended that in limitation the present invention.
Referring to Fig. 1, the display device 10 of an embodiment include backlight 100, polaroid 200, display panel 300 and
Upper polaroid 400.
Wherein, backlight 100 is to collimate out light back light (collimate light emitting BL), so that light
Energy concentrate on the output of positive visual angle.
Referring to Figure 2 together, specifically, backlight 100 includes reflector plate 110, light guide plate 120, prism film 130 and LED
Light source 140, reflector plate 110 are stacked gradually with light guide plate 120, prism film 130, and light guide plate 120 has incidence surface 121, LED light source
140 are oppositely arranged with incidence surface 121, and light guide plate 120 offers the first groove 122 of bar shaped close to the side of reflector plate 110, the
The section of one groove 122 is V-shaped, and the extending direction of the first groove 122 is vertical with the light direction of LED light source 140, light guide plate
120 offer the second groove 123 of bar shaped close to the side of prism film 130, and the section of the second groove 123 is V-shaped, the second groove
123 extending direction is parallel with the light direction of LED light source 140.Further, the prism side of prism film 130, which is layered in, leads
On tabula rasa 120.
Also referring to Fig. 3, polaroid 200 is located at the side of backlight 100.Specifically, polaroid 200 includes first single
Optical axis optical film layer 210, the second uniaxial optical film layer 220, the first polarization layer 230, first compensation film layer 240 and first are pressure-sensitive
Glue (PSA) layer 250, the first protective layer 260.
First uniaxial optical film layer 210 has optical anisotropy, and light can be produced by the first uniaxial optical film layer 210
Raw birefringent phenomenon.Wherein, to can be equivalent to direction of vibration into the light of the first uniaxial optical film layer 210 mutually perpendicular
Two-beam line, the light vertical with the optical axis of the first uniaxial optical film layer 210, referred to as ordinary ray, abbreviation O light；With first
The parallel light of the optical axis of uniaxial optical film layer 210, referred to as extraordinary ray, abbreviation E light.Further, extraordinary ray is rolled over
Penetrate rate (ne1) it is the optical axis of the first uniaxial optical film layer 210 equivalent refractive index parallel with electric field oscillation direction；Ordinary light folding
Penetrate rate (no1) it is the optical axis of the first uniaxial optical film layer 210 equivalent refractive index vertical with electric field oscillation direction.Specifically,
The material of first uniaxial optical film layer 210 is smectic material.
Further, the ordinary refraction index of the first uniaxial optical film layer 210 is 1.0~2.5.
Second uniaxial optical film layer 220 is arranged on the first uniaxial optical film layer 210.Second uniaxial optical film layer
220 have optical anisotropy, and light can generate birefringent phenomenon by the second uniaxial optical film layer 220.Wherein, into second
The light of uniaxial optical film layer 220 can be equivalent to the mutually perpendicular two-beam line of direction of vibration, with the second uniaxial optics
The vertical light of the optical axis of film layer 220, referred to as ordinary ray, abbreviation O light；It is flat with the optical axis of the second uniaxial optical film layer 220
Capable light, referred to as extraordinary ray, abbreviation E light.Further, extraordinary ray refractive index (ne2) it is the second uniaxial optics
The optical axis of film layer 220 equivalent refractive index parallel with electric field oscillation direction；Ordinary refraction index (no2) it is the second uniaxial optics
The optical axis of film layer 220 equivalent refractive index vertical with electric field oscillation direction.Specifically, the material of the second uniaxial optical film layer 220
Material is nematic liquid crystal molecular material.
Further, the extraordinary ray refractive index of the second uniaxial optical film layer 220 is 1.0~2.5.
Further, the extraordinary ray refractive index of the second uniaxial optical film layer 220 is greater than the first uniaxial optical film
The ordinary refraction index of layer 210.Specifically, the extraordinary ray refractive index of the second uniaxial optical film layer 220 and the first uniaxial
The specific refractivity of optical film layer 210 is 0.01~1.5.Wherein, the extraordinary ray refractive index of the second uniaxial optical film layer 220
Bigger with the specific refractivity of the first uniaxial optical film layer 210, the easier light energy that will face is assigned to big visual angle.
Referring to Figure 4 together, specifically, the second uniaxial optical film layer 220 include plate-like portion 221 and with multiple prism portions
222。
Plate-like portion 221 is layered on the first uniaxial optical film layer 210.
Multiple prism portions 222 are formed on the side of plate-like portion 221, and are spaced setting, and multiple prism portions 222 are housed in
In first uniaxial optical film layer 210.Wherein, multiple prism portions 222 are located at plate-like portion 221 close to the first uniaxial optical film layer
210 sides.Specifically, multiple prism portions 222 are triangular prism structure or trigone wimble structure.
When multiple prism portions 222 are triangular prism structure, a side and 221 phase of plate-like portion in each prism portion 222
Fitting.Further, multiple 222 parallel arrangements of prism portion.Further, multiple prism portions 222 parallel arrangement along a straight line,
The distance between the incline of two adjacent prism portions 222 far from 221 side of plate-like portion is greater than or equal to prism portion 222 close to plate
The distance between two inclines in shape portion 221.For example, two adjacent prism portions 222 are far from plate also referring to Fig. 5 and Fig. 6
The distance between the incline of 221 side of shape portion (Px1) be greater than or equal to prism portion 222 close to plate-like portion 221 two inclines it
Between distance (Lx1)；D+d is the maximum gauge of the second uniaxial optical film layer 220.
Wherein, the optical axis direction (long axis direction) of liquid crystal is parallel to light-emitting surface or incidence surface in uniaxial optical film layer 220,
Both it can be parallel to the arragement direction in multiple prism portions 222, perpendicular to the extending direction in each prism portion 222, and can be vertical
Arragement direction in multiple prism portions 222 is parallel to the extending direction in each prism portion 222.Wherein, depending on the first polarization layer 230
Penetrate polarization direction determine extraordinary ray direction refractive index (ne2) and ordinary light direction refractive index (no2).That is the second uniaxial
The optical axis direction (long axis direction) of liquid crystal is parallel to the axis direction that penetrates of the first polarization layer 230 in optical film layer 220, and second is single
The optical axis direction (long axis direction) of liquid crystal is perpendicular to liquid crystal in the second uniaxial optical film layer 220 in optical axis optical film layer 220
Short-axis direction, therefore, the axis direction that penetrates of the first polarization layer 230 determine extraordinary ray direction refractive index (ne2) and ordinary light side
To refractive index (no2)。
Wherein, when multiple 222 parallel arrangements of prism portion, the incline in multiple prism portions 222 is parallel to each other.Specifically, multiple
Prism portion 222 is regular triangular prism structure.
Further, when multiple prism portions 222 are trigone wimble structure, a bottom surface in each prism portion 222 and plate
Shape portion 221 fits.Further, multiple prism portions 222 are arranged in two-dimensional matrix, more effectively by positive visual angle light energy
It is assigned to two-dimensional directional, so that 10 full view of display device is ornamental more uniform.Wherein, referring to Figure 7 together to Fig. 9, each
Prism portion 222 have the vertex opposite with bottom surface, by the line between the vertex in two adjacent prism portions 222 and perpendicular to
The vertical plane of the bottom surface in two adjacent prism portions 222 intersects with the bottom surface in each of two adjacent prism portions 222, vertical plane
It is less than or equal to the length of line with the length (Lx2 or Ly) of the intersection of the bottom surface in each of two adjacent prism portions 222
It spends (Px2 or Py), i.e. Lx2≤Px2, Ly≤Py.Specifically, multiple prism portions 222 are positive triangular pyramid structure.
First polarization layer 230 is layered in plate-like portion 221 far from 222 side of prism portion.Wherein, the first polarization layer 230 is right
Have the effect absorbed with penetrating in polarised light, cooperates the adjustable luminous intensity of the driving of liquid crystal molecule.Specifically, polarization layer
230 be polyvinyl alcohol (PVA) layer.
Wherein, the first uniaxial optical film layer 210 and the second uniaxial optical film layer 220 form smooth optical film.The
One uniaxial optical film layer 210 and the second uniaxial optical film layer 220 will keep certain thickness, to guarantee the first polarization layer
230 weatherability makes the first polarization layer 230 not contact external environment, prevents moisture from having an impact to the first polarization layer 230.
Go out light polarization direction according to the difference of the first polarization layer 230 and can choose the second the non-of uniaxial optical film layer 220 to seek
Ordinary light direction refractive index (ne2) and ordinary light direction refractive index (no2), when the polarization direction for going out light of the first polarization layer 230 is (flat
Row in the first polarization layer 230 penetrates axis direction) it is parallel with x-axis direction when, 220 refractive index of uniaxial optical film layer is ne2=
nx>no2=ny, or when the polarization direction for going out light of the first polarization layer 230 (is parallel to the penetrating shaft side of the first polarization layer 230
To) it is parallel with Y direction when, 220 refractive index of the second uniaxial optical film layer be ne2=ny > no2=nx, film thickness direction are (vertical
In light-emitting surface) it is parallel with Z-direction, the refractive index of the second uniaxial optical film layer 220 is nz=no2。
Also referring to Figure 10, wherein the light energy at positive visual angle is assigned to the principle at big visual angle are as follows: light is by optically thinner medium
Optically denser medium is traveled to, i.e. light travels to the second uniaxial optical film layer 220 by the first uniaxial optical film layer 210, due to folding
The difference for penetrating rate can generate refraction or diffusion phenomena, when multiple prism portions 222 of the second uniaxial optical film layer 220 are trigone
Rod structure or trigone wimble structure, the direction of travel of light and the first uniaxial optical film layer 210 and the second uniaxial optical film layer 220
The light of interface out of plumb positive visual angle light energy can be allowed to be assigned to side view angle, allow side view angle that can watch the image quality at positive visual angle
It presents.
First compensation film layer 240 is layered in the first polarization layer 230 far from 220 side of the second uniaxial optical film layer.Wherein,
First compensation film layer 240 has birefringence, can compensate for the polarization light output at the big visual angle of liquid crystal molecule, simultaneously, additionally it is possible to
It supports and protects the first polarization layer 230.
First pressure-sensitive adhesive layer 250 is layered in the first compensation film layer 240 far from 230 side of the first polarization layer.
First protective layer 260 is layered in one of the first uniaxial optical film layer 210 far from the second uniaxial optical film layer 220
On side.Wherein, the first protective layer 260 is hyaline layer, main to play support and protective effect.Specifically, the first protective layer 260 is to have
Machine nitride layer.More specifically, the first protective layer 260 is selected from polyester (PET) layer, Triafol T layer (TAC) and polymethyl
One of sour methyl esters (PMMA) layer.
It should be noted that polaroid 200 is not limited to above structure, the first 250 layers of pressure-sensitive adhesive layer be can be omitted；Similarly,
First compensation film layer 240 also can be omitted.
It should be noted that polaroid 200 is not limited to above structure, also referring to Figure 11, the stacking of the first protective layer 260
Between plate-like portion 221 and polarization layer 230.Further, the first protective layer 260 can also omit.
The working principle of above-mentioned polaroid 200 are as follows:
When prism portion 222 is triangular prism structure, light first passes through polaroid 200, polaroid before entering display panel 300
200 PVA layer 230 has the effect for absorbing and penetrating for polarised light, and light, which enters polaroid 200, can be divided into horizontal polarisation component
Light and the light of vertical polarisation component absorb when the penetrating shaft of polaroid 200 is parallel to the arragement direction in multiple prism portions 222
When axis is parallel to each 222 extending direction of prism portion, then the light of penetrating shaft horizontal polarisation component is considered in the first uniaxial optics
(220 refractive index of the second uniaxial optical film layer is ne at this time for film layer 210 and the second uniaxial optical film layer 2202=nx > no2=
Ny effect), for the light of horizontal polarisation component by the first uniaxial optical film layer 210, the light of horizontal polarisation component is single in first
The corresponding equivalent refractive index of optical axis optical film layer 210 is no1, after by the second uniaxial optical film layer 220, it is single to correspond to second
The extraordinary ray refractive index of optical axis optical film layer 220 is ne2, therefore the light of the horizontal polarization two medium junctions occur light dredge into
Enter optically denser medium (ne2>no1) behavior, the non-interface vertical with light direction of advance that optically thinner medium and optically denser medium are formed,
Light generates refraction effect by the interface, and positive visual angle light type energy is made to distribute big visual angle.
Similarly, when the penetrating shaft of polaroid 200 is parallel to each 222 extending direction of prism portion, absorption axiss are parallel to multiple
When the arragement direction in prism portion 222, then the light of penetrating shaft vertical polarisation component is considered in the first uniaxial optical film layer 210 and
(220 refractive index of the second uniaxial optical film layer is ne to two uniaxial optical film layers 220 at this time2=ny > no2=nx) effect, hang down
The light of straight polarized component is by the first uniaxial optical film layer 210, and the light of vertical polarisation component is in the first uniaxial optical film layer
210 corresponding equivalent refractive indexs are no1, after by the second uniaxial optical film layer 220, correspond to the second uniaxial optical film layer
220 extraordinary ray refractive index is ne2, therefore the light of the horizontal polarization occurs light in two medium junctions and dredges into optically denser medium
(ne2>no1) behavior, the non-interface vertical with light direction of advance that optically thinner medium and optically denser medium are formed, light passes through the friendship
Junction generates refraction effect, and positive visual angle light type energy is made to distribute big visual angle.
Display panel 300 is layered on side of the polaroid 200 far from backlight 100.Further, display panel 300
It is layered in side of first pressure-sensitive adhesive layer 250 far from the first compensation film layer 240.Specifically, display panel 300 is LCD display
Plate.
Upper polaroid 400 is layered in side of the liquid crystal display panel 300 far from polaroid 200.Also referring to Figure 12, specifically
Ground, upper polaroid 400 include the second pressure-sensitive adhesive layer 410, the second compensation film layer 420 stacked gradually, the second polarization layer 430, the
Two protective layers 440, optical film layer 450 and anti-glazing low reflection layer 460.
Wherein, the second pressure-sensitive adhesive layer 410 is roughly the same with the material of the first pressure-sensitive adhesive layer 250 and function；Second compensation film
Layer 420 is roughly the same with the material of the first compensation film layer 240 and function；The material of second polarization layer 430 and the first polarization layer 230
It is roughly the same with function；Second protective layer 440 is roughly the same with the function of the first protective layer 260, the material of the second protective layer 440
For organic matter layer.Further, the second protective layer 440 be selected from high temperature resistance polyester (PET) layer, Triafol T layer (TAC) and
One of PMMA；The function that optical film layer 450 can according to need selects corresponding film；The work of anti-glazing low reflection layer 460
With being the reflection for preventing glare and reducing light, to reduce the energy loss of light.
It should be noted that display device 10 is not limited to above structure, the upper polaroid 400 in display device 10 can also be with
For polaroid 200, i.e. polaroid 200 can also be used as upper polaroid, and be located at one of display panel 300 far from backlight 100
Side.
Above-mentioned display device 10 at least has the advantages that
Above-mentioned polaroid 200 is single by the way that second is arranged between the first uniaxial optical film layer 210 and the first polarization layer 230
The extraordinary ray refractive index of optical axis optical film layer 220, the second uniaxial optical film layer 220 is greater than the first uniaxial optical film layer
210 ordinary refraction index, light travel to the second uniaxial optical film layer 220 by the first uniaxial optical film layer 210, due to folding
The difference for penetrating rate can generate refraction or diffusion phenomena, when multiple prism portions 222 of the second uniaxial optical film layer 220 are trigone
Rod structure or trigone wimble structure, the friendship of direction of travel and the first uniaxial optical film layer 210 and the second uniaxial optical film layer 220
The light of junction out of plumb can allow positive visual angle light energy to be assigned to side view angle, and the image quality for allowing side view angle that can watch positive visual angle is in
It is existing, solve the problems, such as the big visual angle colour cast of display device 10；Meanwhile display panel 300 does not need for each sub-pixel of RGB to be divided into
Main pixel and sub-pixel structure avoid redesign metal routing or TFT element from driving sub-pixel, cause light-permeable open region sacrificial
Domestic animal influences panel penetrance.Therefore, above-mentioned polaroid 200 can not only improve visual angle colour cast, and panel penetrance is preferable.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of polaroid characterized by comprising
First uniaxial optical film layer；
The second uniaxial optical film layer on the first uniaxial optical film layer, the second uniaxial optical film layer are set
Extraordinary ray refractive index be greater than the first uniaxial optical film layer ordinary refraction index, the second uniaxial optical film
Layer includes plate-like portion and is formed in multiple spaced prism portions on the side of the plate-like portion, and multiple prism portions are received
Holding in the first uniaxial optical film layer, wherein multiple prism portions are triangular prism structure or trigone wimble structure, when
When multiple prism portions are triangular prism structure, a side in each prism portion fits with the plate-like portion, when
When multiple prism portions are trigone wimble structure, the bottom surface in each prism portion fits with the plate-like portion；
Polarization layer is layered on side of the plate-like portion far from the prism portion.
2. polaroid according to claim 1, which is characterized in that the ordinary anaclasis of the first uniaxial optical film layer
Rate is 1.0~2.5；And/or the extraordinary ray refractive index of the second uniaxial optical film layer is 1.0~2.5.
3. polaroid according to claim 1, which is characterized in that the extraordinary ray of the second uniaxial optical film layer is rolled over
The difference for penetrating the ordinary refraction index of rate and the first uniaxial optical film layer is 0.01~1.5.
4. polaroid according to claim 1, which is characterized in that multiple prism portions are triangular prism structure, and more
A prism portion parallel arrangement, the distance between the incline of the prism portion of adjacent two far from the plate-like portion side are big
In or equal to each prism portion close to the plate-like portion the distance between two inclines.
5. polaroid according to claim 1, which is characterized in that multiple prism portions are trigone wimble structure, multiple
The prism portion arranges in two-dimensional matrix, and each prism portion has the vertex opposite with the bottom surface, by adjacent two
Line between the vertex in a prism portion and perpendicular to the bottom surface in two adjacent prism portions
Vertical plane intersects with the bottom surface in two adjacent prism portions, the vertical plane and two adjacent prisms
One bottom surface in portion has intersection, and the length of the intersection is less than or equal to the length of the line.
6. polaroid according to claim 1, which is characterized in that the material of the first uniaxial optical film layer is disk like
Liquid crystal molecule material；And/or the material of the second uniaxial optical film layer is nematic liquid crystal molecular material.
7. polaroid according to claim 1, which is characterized in that further include protective layer, the protective layer is layered in described
On side of the first uniaxial optical film layer far from the second uniaxial optical film layer.
8. polaroid according to claim 1, which is characterized in that further include protective layer, the protective layer is layered in described
Between plate-like portion and the polarization layer.
9. a kind of polaroid characterized by comprising
First uniaxial optical film layer；
The second uniaxial optical film layer on the first uniaxial optical film layer, the second uniaxial optical film layer are set
Extraordinary ray refractive index be greater than the first uniaxial optical film layer ordinary refraction index, the second uniaxial optical film
Layer includes plate-like portion and is formed in multiple spaced prism portions on the side of the plate-like portion, and multiple prism portions are received
Hold in the first uniaxial optical film layer, wherein multiple prism portions are triangular prism structure, multiple prism portions
One side of parallel arrangement along a straight line, each prism portion fits with the plate-like portion, two adjacent ribs
The distance between the incline of mirror portion far from the plate-like portion side is greater than or equal to each prism portion close to the plate-like portion
The distance between two inclines；
Polarization layer is layered on side of the plate-like portion far from the prism portion.
10. a kind of display device, which is characterized in that including backlight, display panel and according to any one of claims 1 to 9
Polaroid, the display panel are located at the side of the backlight, and the polaroid is located at the display panel and the backlight
Between source；Alternatively, the polaroid is located at side of the display panel far from the backlight.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161983.1A CN109100825A (en) | 2018-09-30 | 2018-09-30 | Polarizer and display device |
| PCT/CN2018/119656 WO2020062585A1 (en) | 2018-09-30 | 2018-12-07 | Polarizer and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161983.1A CN109100825A (en) | 2018-09-30 | 2018-09-30 | Polarizer and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109100825A true CN109100825A (en) | 2018-12-28 |
Family
ID=64868117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811161983.1A Pending CN109100825A (en) | 2018-09-30 | 2018-09-30 | Polarizer and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109100825A (en) |
| WO (1) | WO2020062585A1 (en) |
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| CN109597239A (en) * | 2019-01-30 | 2019-04-09 | 惠科股份有限公司 | Optical film layer and display device |
| CN109597240A (en) * | 2019-01-30 | 2019-04-09 | 惠科股份有限公司 | Optical film layer and display device |
| CN109633987A (en) * | 2019-01-30 | 2019-04-16 | 惠科股份有限公司 | Optical film layer and display device |
| CN109633986A (en) * | 2019-01-30 | 2019-04-16 | 惠科股份有限公司 | Optical film layer and display device |
| CN111273478A (en) * | 2020-02-11 | 2020-06-12 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display device and method for manufacturing the same |
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| Publication number | Publication date |
|---|---|
| WO2020062585A1 (en) | 2020-04-02 |
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