CN109597238B - Optical film layer and display device - Google Patents
Optical film layer and display device Download PDFInfo
- Publication number
- CN109597238B CN109597238B CN201910090498.8A CN201910090498A CN109597238B CN 109597238 B CN109597238 B CN 109597238B CN 201910090498 A CN201910090498 A CN 201910090498A CN 109597238 B CN109597238 B CN 109597238B
- Authority
- CN
- China
- Prior art keywords
- layer
- optical
- uniaxial
- optical layer
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000012788 optical film Substances 0.000 title claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 189
- 239000000758 substrate Substances 0.000 claims description 74
- 229910052751 metal Inorganic materials 0.000 claims description 52
- 239000002184 metal Substances 0.000 claims description 52
- 239000010408 film Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 17
- 229920002120 photoresistant polymer Polymers 0.000 claims description 13
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000001678 irradiating effect Effects 0.000 claims 2
- 239000004973 liquid crystal related substance Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 230000010287 polarization Effects 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000004985 Discotic Liquid Crystal Substance Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- 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
- G02F1/133504—Diffusing, scattering, diffracting elements
-
- 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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to an optical film layer and a display device. The optical film layer comprises a first single optical axis optical layer, a second single optical axis optical layer and a first grating layer, the extraordinary refractive index of the second single optical axis optical layer is greater than the ordinary refractive index of the first single optical axis optical layer, and light passes through the interface of the groove and the protrusion structure to generate refraction, so that the normal-viewing-angle light-type energy is distributed to a large viewing angle, and the viewing-angle color cast is improved; the first grating layer is laminated on one side of the second uniaxial optical layer far away from the first uniaxial optical layer or embedded in one side of the second uniaxial optical layer far away from the first uniaxial optical layer, so that natural light can be changed into polarized light to replace a polarizing plate with thicker thickness. Therefore, the optical film layer not only can improve the color cast at a large viewing angle, but also can be used for replacing the traditional thicker polarizing plate.
Description
Technical Field
The invention relates to the technical field of display, in particular to an optical film layer and a display device.
Background
The VA-type liquid crystal panel has advantages of higher production efficiency and lower manufacturing cost compared with the IPS (In-Plane Switching) liquid crystal panel, but has a defect of more obvious optical property compared with the IPS liquid crystal panel In terms of optical property, and especially the large-size panel needs a larger viewing angle In terms of commercial application. For example, when the VA-mode lcd panel is driven at a large viewing angle, the brightness is rapidly saturated with voltage, which causes the quality of the viewing angle image quality contrast and color shift to be worse than that of the front viewing image quality, resulting in the viewing angle color shift.
Therefore, the conventional VA liquid crystal panel has a problem that the large viewing angle image quality contrast and color shift are more deteriorated than the front viewing image quality, and the viewing angle color shift is generated.
Disclosure of Invention
Accordingly, it is desirable to provide an optical film layer and a display device capable of improving the large viewing angle color shift of the display panel.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
an optical film layer comprising:
a first uniaxial optical layer, wherein a plurality of grooves are formed on one side of the first uniaxial optical layer;
the second single-optical-axis optical layer comprises a plate-shaped part and a plurality of convex structures which are attached to one side of the plate-shaped part and matched with the shapes and the sizes of the grooves, and the extraordinary refractive index of the second single-optical-axis optical layer is larger than the ordinary refractive index of the first single-optical-axis optical layer;
the first grating layer is laminated on one side, far away from the first single-optical-axis optical layer, of the second single-optical-axis optical layer; or embedded on a side of the second uniaxial optical layer remote from the first uniaxial optical layer.
In one embodiment, the extraordinary refractive index of the second single-optical-axis optical layer is 1.0-2.5; and/or the ordinary refractive index of the first single-optical-axis optical layer is 1.0 to 2.5.
In one embodiment, the difference between the extraordinary refractive index of the second uniaxial optical layer and the ordinary refractive index of the first uniaxial optical layer is 0.01 to 2.
In one embodiment, the protruding structures are triangular prism structures, one side face of each triangular prism structure is attached to the plate-shaped portion and extends, the extending directions of the protruding structures are parallel, and two adjacent protruding structures are arranged at intervals.
In one embodiment, the protruding structures are triangular pyramid structures, the protruding structures are arranged in a two-dimensional matrix array, and two adjacent protruding structures are arranged at intervals.
In one embodiment, the material of the second uniaxial optical layer comprises nematic liquid crystal molecular material; and/or the material of the first uniaxial optical layer comprises a discotic liquid crystal molecular material.
In one embodiment, the first grating layer is laminated on one side of the second uniaxial optical layer far away from the first uniaxial optical layer, the first grating layer comprises a transparent substrate and a plurality of metal layers in strip shapes formed on the transparent substrate, and the metal layers are arranged at intervals and in parallel; or
The first grating layer is embedded in one side, far away from the first uniaxial optical layer, of the second uniaxial optical layer, the first grating layer comprises a plurality of strip-shaped metal layers formed on one side of the second uniaxial optical layer, and the metal layers are arranged at intervals and in parallel.
In one embodiment, the width of the metal layer is 50nm-150nm, the thickness of the metal layer is 100nm-200nm, and the distance between two adjacent metal layers is 100nm-200 nm.
An optical film layer comprising:
a first uniaxial optical layer, wherein a plurality of grooves are formed on one side of the first uniaxial optical layer;
the second single-optical-axis optical layer comprises a plate-shaped part and a plurality of convex structures which are attached to one side of the plate-shaped part and matched with the shapes and the sizes of the grooves, and the extraordinary refractive index of the second single-optical-axis optical layer is larger than the ordinary refractive index of the first single-optical-axis optical layer;
the first grating layer is laminated on one side, far away from the first single-optical-axis optical layer, of the second single-optical-axis optical layer; or embedded on a side of the second uniaxial optical layer remote from the first uniaxial optical layer;
wherein the extraordinary refractive index of the second single-optical-axis optical layer is 1.0-2.5; the ordinary refractive index of the first single-optical-axis optical layer is 1.0-2.5;
the difference between the extraordinary refractive index of the second uniaxial optical layer and the ordinary refractive index of the first uniaxial optical layer is 0.01-2.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a display device, comprising:
the backlight module is used for providing incident light;
the display panel is arranged above the backlight module and used for receiving the incident light and displaying pictures;
wherein the display panel includes:
the optical film layer as described above;
a first substrate disposed on a side of the optical film layer remote from the first uniaxial optical layer;
a second substrate disposed opposite to the first substrate;
a display layer disposed between the first substrate and the second substrate;
a second grating layer disposed between the display layer and the second substrate;
the light resistance layer is arranged between the second grating layer and the second substrate, or the light resistance layer is arranged between the first substrate and the display layer.
In one embodiment, the photoresist layer is disposed between the second grating layer and the second substrate, and the display panel further includes:
a compensation film layer disposed between the display layer and the second grating layer; and/or
A compensation film layer disposed between the display layer and the first substrate.
In one embodiment, the photoresist layer is disposed between the first substrate and the display layer; the display panel further includes:
a compensation film layer disposed between the display layer and the second grating layer; and/or
And the compensation film layer is arranged between the photoresist layer and the first substrate.
The optical film layer comprises a first single optical axis optical layer, a second single optical axis optical layer and a first grating layer, the extraordinary refractive index of the second single optical axis optical layer is greater than the ordinary refractive index of the first single optical axis optical layer, and light passes through the interface of the groove and the protrusion structure to generate refraction, so that the normal-viewing-angle light type energy is distributed to a large viewing angle, and the viewing-angle color cast is improved; the first grating layer is laminated on one side of the second uniaxial optical layer far away from the first uniaxial optical layer or embedded in one side of the second uniaxial optical layer far away from the first uniaxial optical layer, so that natural light can be changed into polarized light to replace a polarizing plate with thicker thickness. Therefore, the optical film layer not only can improve the large visual angle color cast of the display panel, but also can make the thickness of the display panel thinner.
The display device comprises a backlight module with high-directivity backlight type output and a display panel with a large visual angle, improved color cast and thinning. On one hand, the display panel can distribute light type energy of a positive visual angle to a large visual angle through the arrangement of the optical film layer, and the problem of large visual angle color cast of the display panel is solved; on the other hand, the first grating layer and the second grating layer can convert natural light into polarized light to replace a polarizing plate with a thicker thickness, so that the thickness of the display panel is thinner, the display device is light and thin in volume, low in display color cast and high in display efficiency, and the user experience can be improved.
Drawings
FIG. 1 is a schematic diagram of an optical film according to an embodiment;
FIG. 2 is a schematic diagram of an optical film according to an embodiment;
FIG. 3 is a schematic diagram of the refraction effect generated at the interface not perpendicular to the light traveling direction;
FIG. 4 is a schematic perspective view of a second uniaxial optical layer according to one embodiment;
FIG. 5 is a schematic cross-sectional view of a second uniaxial optical layer corresponding to FIG. 4;
FIG. 6 is a schematic perspective view of a second uniaxial optical layer according to another embodiment;
FIG. 7 is a schematic cross-sectional view of a second uniaxial optical layer corresponding to FIG. 6;
FIG. 8 is a schematic structural diagram of a first grating layer of the optical film shown in FIG. 2;
FIG. 9 is a schematic diagram of a display device according to an embodiment;
FIG. 10 is a schematic structural diagram of a backlight module of the display device shown in FIG. 9;
FIG. 11 is a schematic view illustrating a structure of a display panel of the display device shown in FIG. 9 according to an embodiment;
FIG. 12 is a schematic view illustrating a structure of a display panel of the display device shown in FIG. 9 according to an embodiment;
FIG. 13 is a schematic view of a display panel according to another embodiment of FIG. 11;
FIG. 14 is a schematic structural diagram of a display panel according to another embodiment of FIG. 11;
FIG. 15 is a schematic structural diagram of a display panel according to another embodiment of FIG. 11;
FIG. 16 is a schematic view of a display panel according to another embodiment of FIG. 12;
FIG. 17 is a schematic structural diagram of a display panel according to another embodiment of FIG. 12;
fig. 18 is a schematic structural diagram of a display panel according to another embodiment of fig. 12.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 and 2, fig. 1 and 2 are schematic structural views of the optical film layer in the present embodiment.
In the present embodiment, the optical film layer 210 includes a first uniaxial optical layer 211, a second uniaxial optical layer 212, and a first grating layer 213. Wherein the first grating layer stack 213 is on the side of the second uniaxial optical layer remote from the first uniaxial optical layer 211 (see fig. 1); or embedded on the side of the second uniaxial optical layer 212 remote from the first uniaxial optical layer 211 (see fig. 2).
Wherein, a plurality of grooves are formed on one side of the first uniaxial optical layer 211, and the first uniaxial optical layer 211 has optical anisotropy and extraordinary refractive index ne1And ordinary refractive index no1. Extraordinary ray refractive index ne1Is the first uniaxial optical layer 211 as the light polarization sideAn equivalent refractive index parallel to the optical axis; refractive index no of ordinary light1The equivalent refractive index of the first uniaxial optical layer 211 when the polarization direction of light is perpendicular to the optical axis generates birefringence when light passes through the first uniaxial optical layer 211.
In one embodiment, ne1＞no1That is, the first uniaxial optical layer 211 is a positive uniaxial optical layer. Specifically, an xyz coordinate system, nx, is established1Is the refractive index of the first uniaxial optical layer 211 in the x direction, ny1The refractive index of the first uniaxial optical layer 211 in the y direction, nz1The refractive index of the first uniaxial optical layer 211 in the z direction, which is the extension direction of the film thickness of the first uniaxial optical layer 211 (perpendicular to the light incident surface of the first uniaxial optical layer 211), ne1＝nx1>no1＝ny1Or ne1＝ny1>no1＝nx1，no1＝nz1. In one embodiment, the ordinary index of refraction no of the first single-optic layer 2111Is 1.0-2.5. In one embodiment, the material of the first uniaxial optical layer 211 includes, but is not limited to, nematic liquid crystal molecular material.
Wherein the second single optical axis layer 212 has optical anisotropy and extraordinary refractive index ne2And ordinary refractive index no2. Extraordinary ray refractive index ne2The equivalent refractive index of the second uniaxial optical layer 212 when the polarization direction of light is parallel to the optical axis; refractive index no of ordinary light2The equivalent refractive index of the second uniaxial optical layer 212 when the polarization direction of light is perpendicular to the optical axis generates birefringence when light passes through the second uniaxial optical layer 212.
In one embodiment, ne2>no2That is, the second uniaxial optical layer 212 is a positive uniaxial optical layer. Specifically, an xyz coordinate system, nx, is established2Is the refractive index, ny, of the second uniaxial optical layer 212 in the x-direction2The refractive index of the second uniaxial optical layer 212 in the y-direction, nz2The refractive index of the second uniaxial optical layer 212 in the z-direction, which is the extension of the film thickness of the second uniaxial optical layer 212To the direction (perpendicular to the light exit surface of the second uniaxial optical layer 212), ne2＝nx2>no2＝ny2Or ne2＝ny2>no2＝nx2，no2＝nz2. In one embodiment, the extraordinary refractive index ne of the second uniaxial optical layer 2122Is 1.0-2.5. In one embodiment, the material of the second uniaxial optical layer 212 includes, but is not limited to, nematic liquid crystal molecular material.
In particular, the extraordinary refractive index ne of the second uniaxial optical layer 2122Ordinary refractive index no greater than that of the first single-optical-axis optical layer 2111. In particular, the extraordinary refractive index ne of the second uniaxial optical layer 2122Ordinary refractive index no with first single-optical-axis optical layer 2111The difference is 0.01-2. When ne2And no1The larger the difference, the easier it is to distribute the front view light energy to large viewing angles. More specifically, the direction of the optical axis of the liquid crystal in the second uniaxial optical layer 212 is perpendicular to the direction of the optical axis of the liquid crystal in the first uniaxial optical layer 211. In one embodiment, the liquid crystal optic direction of the second uniaxial optical layer 212 is parallel to the 0/180degree direction, and the liquid crystal optic direction of the second uniaxial optical layer 212 is parallel to the 90/270degree direction. In one embodiment, the liquid crystal optic direction of the first uniaxial optical layer 212 is parallel to the 90/270degree direction, and the liquid crystal optic direction of the second uniaxial optical layer 212 is parallel to the 0/180degree direction. The plane formed by the 0/180degree direction and the 90/270degree direction is parallel to the light incident surface of the first uniaxial optical layer 211.
In the embodiment of the present invention, the first uniaxial optical layer 211 has a plurality of grooves formed on one side thereof, and the second uniaxial optical layer 212 includes a plate portion 2121 and a plurality of protrusion structures 2122 fitted on one side of the plate portion 2121 to match the shape and size of the grooves. Due to the extraordinary refractive index ne of the second uniaxial optical layer 2122Ordinary-ray refractive index no greater than that of first single-optical-axis optical layer1Therefore, the light incident surface of the protrusion 2122 forms an interface surface not perpendicular to the light advancing direction, and the interface surface not perpendicular to the light advancing direction generates a refraction effect (see fig. 3) to allow the light advancing to generateThe angle is changed. Specifically, the convex structures are arranged periodically, that is, the refraction portions constructed by the convex structures are arranged periodically.
In one embodiment, referring to fig. 4, the bump structures 2122 are triangular prism structures having a plurality of side surfaces, and one side surface of each triangular prism structure extends to be close to the plate-shaped portion 2121, the extending directions of the plurality of bump structures 2122 are parallel, and two adjacent bump structures 2122 are spaced apart from each other. Specifically, referring to fig. 5, the width of the side surface of the attachment plate 2121 is Lx1The distance between the centers of the side surfaces of two adjacent convex structures 2122 attached to the plate-shaped portion 2121 is Px1，Px1≥Lx1When Px1＝Lx1And when the two adjacent protruding structures are attached to each other. Raised structures 2122 have a thickness d1The second uniaxial optical layer 212 has a thickness D1，d1Is not 0, and D1≥d1。
In one embodiment, referring to fig. 6, the protruding structures 2122 are triangular pyramid structures, a plurality of protruding structures 2122 are arranged in a two-dimensional matrix array, and two adjacent protruding structures 2122 are arranged at intervals to more effectively distribute the front viewing angle light energy to two-dimensional directions, so that the viewing at the full viewing angle is more uniform. Specifically, referring to fig. 7, the width of the side surface of the attachment plate 2121 in the x direction is Lx2The distance between the centers of the side surfaces of two adjacent convex structures 2122 attached to the plate-shaped portion 2121 is Px2，Px2≥Lx2When Px2＝Lx2When the X-direction projection structure is used, two adjacent projection structures are attached to each other in the X-direction. The width Ly of the side surface of the bonding plate part 2121 in the y direction2The distance between the centers of the side surfaces of two adjacent convex structures 2122 attached to the plate-shaped portion 2121 is Py2，Py2≥Ly2When Py is2＝Ly2When the two adjacent protruding structures are attached to each other in the y direction. Raised structures 2122 have a thickness d2The second uniaxial optical layer 212 has a thickness D2，d2Is not 0, and D2≥d2。
In the embodiment of the present invention, the first grating layer 213 is laminated on the side of the second uniaxial optical layer 212 away from the first uniaxial optical layer 211; or embedded on the side of the second uniaxial optical layer 212 remote from the first uniaxial optical layer 211. The first grating layer 213 can change natural light into polarized light. Wherein the thickness of the first grating layer 213 is typically less than 20 μm.
Specifically, when the first grating layer 213 is laminated on the side of the second uniaxial optical layer 212 remote from the first uniaxial optical layer 211, referring to fig. 8, the first grating layer includes a transparent substrate 2131 and a plurality of metal layers 2132 in the shape of stripes formed on the transparent substrate 2131, and the plurality of metal layers 2132 are spaced apart and arranged in parallel. The transparent substrate 2131 includes, but is not limited to, one of a glass substrate, a silicon gel substrate, a silicon dioxide substrate, a silicon nitride substrate, a polymethyl methacrylate substrate, and a polyethylene terephthalate substrate. Metal layer 2132 includes, but is not limited to, gold, aluminum, and copper. The metal layer 2132 is formed on the transparent substrate 2131, the plurality of metal layers 2132 are uniformly arranged along a straight line at intervals, and the extending directions of the plurality of metal layers 2132 are parallel to each other to form a grating. Further, the width of the metal layer 2132 is 50nm to 150 nm; the thickness of the metal layer 2132 is 100nm-200 nm; the distance between two adjacent metal layers 2132 is 100nm-200 nm.
Specifically, when the first grating layer 213 is embedded on the side of the second uniaxial optical layer 212 remote from the first uniaxial optical layer 211, the first grating layer includes a plurality of metal layers in the shape of stripes formed on the side of the second uniaxial optical layer 212, and the plurality of metal layers are spaced apart and arranged in parallel. Metal layers include, but are not limited to, gold, aluminum, and copper. The metal layers are formed on one side of the second uniaxial optical layer 212, the plurality of metal layers are spaced and uniformly arranged along a straight line, and the extending directions of the plurality of metal layers are parallel to each other, thereby forming a grating. Further, the width of the metal layer is 50nm-150 nm; the thickness of the metal layer 2132 is 100nm-200 nm; the distance between two adjacent metal layers 2132 is 100nm-200 nm.
In the embodiment of the present invention, the first grating layer 213 is divided into an electromagnetic wave whose vibration direction is perpendicular to the extending direction of the metal layer and an electromagnetic wave whose vibration direction is parallel to the extending direction of the metal layer, and the first grating layer 213 absorbs or reflects an electromagnetic wave component whose vibration component is parallel to the extending direction of the metal layer, and only an electromagnetic wave component whose vibration component is perpendicular to the extending direction of the metal layer penetrates through the first grating layer, so as to obtain the same function as the polarizing plate, and only pass through polarized light perpendicular to the stretching direction of the polarizing plate.
Specifically, the light is composed of a horizontal polarization (0/180 degree direction of electric field vibration) and a vertical polarization (90/270 degree direction of electric field vibration), and the first grating layer 213 has an absorption and transmission function for polarized light.
When the arrangement direction of the metal layers of the first grating layer 213 is parallel to the 0/180degree direction, the extending direction of the metal layers of the first grating layer 213 is parallel to the 90/270degree direction. It is contemplated that horizontally polarized light passing through first single-optical-axis optical layer 211 with an equivalent refractive index no may pass through first grating layer 2131The horizontally polarized light has an equivalent refractive index ne through the second single-optical-axis optical layer 2122Due to ne2＞no1The interface between the first uniaxial optical layer 211 and the second uniaxial optical layer 212 shows the optical phenomenon that horizontally polarized light is emitted from a light-sparse medium to a light-dense medium to generate refraction, so that the front-view angle light type energy is distributed to a large viewing angle.
When the arrangement direction of the metal layers of the first grating layer 213 is parallel to the 90/270degree direction, the extending direction of the metal layers of the first grating layer 213 is parallel to the 0/180degree direction. It is expected that vertically polarized light passing through first single-optical-axis optical layer 211 with an equivalent refractive index no may pass through first grating layer 2131The equivalent refractive index of the vertically polarized light passing through the second single-optical-axis optical layer 212 is ne2Due to ne2＞no1The interface between the first uniaxial optical layer 211 and the second uniaxial optical layer 212 shows the optical phenomenon that the vertical polarized light is emitted from the light sparse medium to the light dense medium to generate refraction, so that the normal-viewing-angle light type energy is distributed to a large viewing angle.
The optical film provided by the embodiment includes a first single optical axis optical layer 211, a second single optical axis optical layer 212 and a first grating layer 213, wherein the extraordinary refractive index of the second single optical axis optical layer 212 is greater than the ordinary refractive index of the first single optical axis optical layer 211, and light passes through the interface of the groove and the protrusion structure to generate refraction, so that the front-view angle light type energy is distributed with a large viewing angle, and the color shift of the viewing angle is improved; the first grating layer 213 is laminated on the side of the second uniaxial optical layer 212 away from the first uniaxial optical layer 211, or embedded in the side of the second uniaxial optical layer 212 away from the first uniaxial optical layer 211, so that natural light can be changed into polarized light instead of a polarizing plate with a thick thickness. Therefore, the optical film layer can distribute the energy of a front-view angle type to a large viewing angle, improve the color cast of the viewing angle, and convert natural light into polarized light to replace a polarizing plate.
Referring to fig. 9, fig. 9 is a schematic structural view of the display device in this embodiment.
In the present embodiment, the display device 10 includes a backlight module 100 and a display panel 200. The backlight module 100 provides a collimated light source (backlight light emitting BL) to concentrate the light energy at the front viewing angle for output.
In the embodiment of the present invention, referring to fig. 10, the backlight module 100 has a high-directivity backlight light output, and includes a reflector 110, a light guide plate 120, a prism film 130, and an LED light source 140, wherein the reflector 110, the light guide plate 120, and the prism film 130 are sequentially stacked, the light guide plate 120 has a light incident surface 121, the LED light source 140 is disposed opposite to the light incident surface 121, a strip-shaped first groove 122 is formed on one side of the light guide plate 120 close to the reflector 110, a cross section of the first groove 122 is V-shaped, an extending direction of the first groove 122 is perpendicular to a light emitting direction of the LED light source 140, a strip-shaped second groove 123 is formed on one side of the light guide plate 120 close to the prism film 130, a cross section of the second groove 123 is V-shaped, and an extending. Further, the prism side of the prism film 130 is stacked on the light guide plate 120.
In the embodiment of the present invention, referring to fig. 11 and 12, fig. 11 and 12 are schematic structural diagrams of the display panel in the embodiment.
In this embodiment, the display panel 200 includes an optical film layer 210, a first substrate 220, a display layer 230, a second grating layer 240, a photoresist layer 250, and a second substrate 260.
Specifically, the first substrate 220 is disposed on the side of the optical film layer 210 away from the first uniaxial optical layer 211; the second substrate 260 is disposed opposite to the first substrate 220; the display layer 230 is disposed between the first substrate 220 and the second substrate 260; the second grating layer 240 is disposed between the display layer 230 and the second substrate 260; the photoresist layer 250 is disposed between the second grating layer 240 and the second substrate 260, or between the first substrate 220 and the display layer 230.
That is, in an embodiment, referring to fig. 11, the display panel 200 includes an optical film layer 210, a first substrate 220, a display layer 230, a second grating layer 240, a photoresist layer 250, and a second substrate 260, which are sequentially stacked; in another embodiment, referring to fig. 12, the display panel 200 includes an optical film layer 210, a first substrate 220, a photoresist layer 250, a display layer 230, a second grating layer 240, and a second substrate 260 sequentially stacked.
In the embodiment of the present invention, the optical film layer 210 refers to the related description of the above embodiment, and is not described herein again. The optical film 210 can distribute the energy of the front viewing angle light type to a large viewing angle, improve the color shift of the viewing angle, and change the natural light into polarized light to replace a polarizing plate, thereby reducing the thickness of the display panel.
In the embodiment of the invention, the first substrate 220 is disposed on the optical film layer 210 on a side away from the first uniaxial optical layer 211, the second substrate 260 is disposed opposite to the first substrate 220, and the materials of the first substrate 220 and the second substrate 260 are not limited, and a glass substrate may be specifically selected. The display layer 230 includes a liquid crystal material layer and electrode layers disposed on upper and lower surfaces of the liquid crystal material layer, wherein the material of the electrode layers is preferably indium tin oxide.
In the embodiment of the present invention, the second grating layer 240 includes a transparent substrate and a plurality of metal layers formed on the transparent substrate, where the plurality of metal layers are spaced and arranged in parallel. The transparent substrate includes, but is not limited to, one of a glass substrate, a silicon gel substrate, a silicon dioxide substrate, a silicon nitride substrate, a polymethyl methacrylate substrate, and a polyethylene terephthalate substrate. Metal layers include, but are not limited to, gold, aluminum, and copper. The metal layers are formed on the transparent substrate, the metal layers are uniformly distributed at intervals along a straight line, and the extending directions of the metal layers are parallel to each other to form the grating. Further, the width of the metal layer is 50nm-150 nm; the thickness of the metal layer is 100nm-200 nm; the distance between two adjacent metal layers is 100nm-200 nm. Further, the second grating layer 240 is disposed opposite to the first grating layer 213 of the optical film layer 210, that is, the plurality of metal layers of the second grating layer 240 correspond to the plurality of metal layers of the first grating layer 213. The second grating layer 240 has similar structure and function to the first grating layer 213, and has the absorption and penetration effects on polarized light.
In the embodiment of the present invention, the photoresist layer 250 is used for providing a hue to the display panel, so that the display panel forms a color display image. The photoresist layer 250 may be disposed between the second grating layer 240 and the second substrate 260, or may also be disposed between the first substrate 220 and the display layer 230.
Referring to fig. 13-15 (in the figures, the grid layer is a compensation film layer), in an embodiment, when the photoresist layer 250 is disposed between the second grating layer 240 and the second substrate 260, the display panel may further include: a compensation film layer disposed between the display layer 230 and the second grating layer 240; and/or a compensation film layer disposed between the display layer 230 and the first substrate 220.
Referring to fig. 16-18 (in the figures, the mesh layer is a compensation film layer), in an embodiment, when the photoresist layer 250 is disposed between the first substrate 220 and the display layer 230, the display panel may further include: a compensation film layer disposed between the display layer 230 and the second grating layer 240; and/or a compensation film layer disposed between the photoresist layer 250 and the first substrate 220.
It should be noted that the display panel 200 is not limited to the above-mentioned laminated structure, and different layers may be made of materials with different functions according to different requirements, for example, a multifunctional film layer is obtained by adding other functional materials to a single functional film layer. In addition, the stacking sequence of the various film layers in the display panel 200 may be changed according to the required functions, and other functional film layers may be added according to the requirements.
The display device 10 of the present embodiment includes a backlight module 100 outputting a backlight light with high directivity, and a display panel 200 having a large viewing angle, improved color shift, and reduced thickness. On one hand, the display panel 200 can distribute the light type energy of the positive viewing angle to the large viewing angle through the arrangement of the optical film layer 210, and the problem of color cast of the large viewing angle of the display panel 200 is solved, so that each sub-pixel does not need to be divided into a main pixel and a sub-pixel structure, and the sub-pixel is prevented from being driven by redesigned metal wiring or a thin film transistor element and a light-permeable opening area is prevented from being sacrificed, so that the panel has high panel transmittance, the light-emitting energy is increased, the energy-saving benefit can be achieved, and the display resolution and the driving frequency of the display panel 200 are maintained; on the other hand, the first grating layer 213 and the second grating layer 240 can convert natural light into polarized light, and replace a polarizing plate with a thicker thickness, so that the thickness of the display panel 200 is thinner, and thus the display device 10 has a thinner volume, a lower display color shift rate, and a higher display efficiency, and can improve user experience.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. An optical film layer, comprising:
a first uniaxial optical layer, wherein a plurality of grooves are formed on one side of the first uniaxial optical layer;
the second single-optical-axis optical layer comprises a plate-shaped part and a plurality of convex structures which are attached to one side of the plate-shaped part and matched with the shapes and the sizes of the grooves, the extraordinary refractive index of the second single-optical-axis optical layer is greater than the ordinary refractive index of the first single-optical-axis optical layer, and the convex structures are triangular pyramid structures and are arranged periodically; the light incident surface of the convex structure forms an interface surface which is not vertical to the light advancing direction, and the interface surface which is not vertical to the light advancing direction generates a refraction effect by irradiating a light sparse medium to a light dense medium;
the first grating layer is laminated on one side, far away from the first single-optical-axis optical layer, of the second single-optical-axis optical layer; or embedded on a side of the second uniaxial optical layer remote from the first uniaxial optical layer.
2. The optical film of claim 1 wherein the second single-axis optical layer has an extraordinary refractive index of 1.0-2.5; and/or the ordinary refractive index of the first single-optical-axis optical layer is 1.0 to 2.5.
3. The optical film of claim 1 wherein the difference between the extraordinary refractive index of the second uniaxial optical layer and the ordinary refractive index of the first uniaxial optical layer is 0.01-2.
4. The optical film layer as set forth in any one of claims 1 to 3 wherein the protrusion structures are triangular prism structures, one side surface of each triangular prism structure extends along the plate-shaped portion, the extending directions of the plurality of protrusion structures are parallel, and two adjacent protrusion structures are spaced apart from each other.
5. The optical film layer as set forth in any one of claims 1-3 wherein the raised structures are triangular pyramid structures, and a plurality of the raised structures are arranged in a two-dimensional matrix array, and two adjacent raised structures are spaced apart from each other.
6. The optical film layer of any of claims 1-3, wherein the material of the second uniaxial optical layer comprises a nematic liquid crystal molecular material; and/or the material of said first uniaxial optical layer comprises a nematic liquid crystal molecular material.
7. The optical film layer as set forth in any one of claims 1-3, wherein the first grating layer is laminated on a side of the second uniaxial optical layer remote from the first uniaxial optical layer, the first grating layer comprising a transparent substrate and a plurality of metal layers in the form of stripes formed on the transparent substrate, the plurality of metal layers being spaced apart and arranged in parallel; or
The first grating layer is embedded in one side, far away from the first uniaxial optical layer, of the second uniaxial optical layer, the first grating layer comprises a plurality of strip-shaped metal layers formed on one side of the second uniaxial optical layer, and the metal layers are arranged at intervals and in parallel.
8. The optical film layer of claim 7, wherein the width of the metal layer is 50nm to 150nm, the thickness of the metal layer is 100nm to 200nm, and the distance between two adjacent metal layers is 100nm to 200 nm.
9. An optical film layer, comprising:
a first uniaxial optical layer, wherein a plurality of grooves are formed on one side of the first uniaxial optical layer;
the second single-optical-axis optical layer comprises a plate-shaped part and a plurality of convex structures which are attached to one side of the plate-shaped part and matched with the shapes and the sizes of the grooves, the extraordinary refractive index of the second single-optical-axis optical layer is greater than the ordinary refractive index of the first single-optical-axis optical layer, and the convex structures are triangular pyramid structures and are arranged periodically; the light incident surface of the convex structure forms an interface surface which is not vertical to the light advancing direction, and the interface surface which is not vertical to the light advancing direction generates a refraction effect by irradiating a light sparse medium to a light dense medium;
the first grating layer is laminated on one side, far away from the first single-optical-axis optical layer, of the second single-optical-axis optical layer; or embedded on a side of the second uniaxial optical layer remote from the first uniaxial optical layer;
wherein the extraordinary refractive index of the second single-optical-axis optical layer is 1.0-2.5; the ordinary refractive index of the first single-optical-axis optical layer is 1.0-2.5;
the difference between the extraordinary refractive index of the second uniaxial optical layer and the ordinary refractive index of the first uniaxial optical layer is 0.01-2.
10. A display device, comprising:
the backlight module is used for providing incident light;
the display panel is arranged above the backlight module and used for receiving the incident light and displaying pictures;
wherein the display panel includes:
the optical film layer of any one of claims 1-9;
a first substrate disposed on a side of the optical film layer remote from the first uniaxial optical layer;
a second substrate disposed opposite to the first substrate;
a display layer disposed between the first substrate and the second substrate;
a second grating layer disposed between the display layer and the second substrate;
the light resistance layer is arranged between the second grating layer and the second substrate, or the light resistance layer is arranged between the first substrate and the display layer.
11. The display device of claim 10, wherein the light blocking layer is disposed between the second grating layer and the second substrate, the display panel further comprising:
a compensation film layer disposed between the display layer and the second grating layer; and/or
A compensation film layer disposed between the display layer and the first substrate.
12. The display device according to claim 11, wherein the light blocking layer is provided between the first substrate and the display layer; the display panel further includes:
a compensation film layer disposed between the display layer and the second grating layer; and/or
And the compensation film layer is arranged between the photoresist layer and the first substrate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090498.8A CN109597238B (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
| PCT/CN2019/076528 WO2020155274A1 (en) | 2019-01-30 | 2019-02-28 | Optical film layer and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090498.8A CN109597238B (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109597238A CN109597238A (en) | 2019-04-09 |
| CN109597238B true CN109597238B (en) | 2020-11-13 |
Family
ID=65966926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910090498.8A Active CN109597238B (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109597238B (en) |
| WO (1) | WO2020155274A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188591A (en) * | 2018-09-30 | 2019-01-11 | 惠科股份有限公司 | Polarizer and display device |
| CN109143448A (en) * | 2018-09-30 | 2019-01-04 | 惠科股份有限公司 | polarizing structure, display panel and display device |
| CN109239968B (en) * | 2018-10-30 | 2021-05-25 | 惠科股份有限公司 | Optical composite film layer, display panel and display device |
-
2019
- 2019-01-30 CN CN201910090498.8A patent/CN109597238B/en active Active
- 2019-02-28 WO PCT/CN2019/076528 patent/WO2020155274A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020155274A1 (en) | 2020-08-06 |
| CN109597238A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020062584A1 (en) | Polarizing structure and display device | |
| WO2020087620A1 (en) | Optical composite film, display panel, and display device | |
| WO2020087638A1 (en) | Optical composite film, display panel and display device | |
| CN109212822B (en) | Optical composite film and display panel | |
| WO2020155206A1 (en) | Optical film layer and display device | |
| WO2020087624A1 (en) | Optical composite film, display panel and display device | |
| WO2020087625A1 (en) | Optical composite film, display panel and display device | |
| CN109239968B (en) | Optical composite film layer, display panel and display device | |
| WO2020062603A1 (en) | Polarizing structure and display device | |
| WO2020062600A1 (en) | Polarizing structure and display device | |
| WO2020155281A1 (en) | Optical film layer and display device | |
| WO2020155279A1 (en) | Optical film layer and display device | |
| JP2000147494A (en) | Optical element and display device using that optical element | |
| CN109188766B (en) | Optical composite film, display panel and display device | |
| WO2020062578A1 (en) | Polarizer structure and display device | |
| WO2020087632A1 (en) | Optical composite film, display panel, and display device | |
| WO2020155280A1 (en) | Optical film layer and display device | |
| WO2020155271A1 (en) | Optical film layer and display device | |
| JP5114853B2 (en) | Display device | |
| CN109597238B (en) | Optical film layer and display device | |
| WO2020155278A1 (en) | Optical film and display device | |
| WO2020155273A1 (en) | Optical film layer and display device | |
| WO2020155207A1 (en) | Optical film and display device | |
| WO2020155220A1 (en) | Optical film layer and display device | |
| WO2020062594A1 (en) | Polarizing plate and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |