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CN108828706A - Display device - Google Patents

Display device Download PDF

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Publication number
CN108828706A
CN108828706A CN201810638185.7A CN201810638185A CN108828706A CN 108828706 A CN108828706 A CN 108828706A CN 201810638185 A CN201810638185 A CN 201810638185A CN 108828706 A CN108828706 A CN 108828706A
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CN
China
Prior art keywords
polarizing film
thickness
light polarizing
torque
glue
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.)
Granted
Application number
CN201810638185.7A
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Chinese (zh)
Other versions
CN108828706B (en
Inventor
黄怡菱
蔡明宏
梁辉鸿
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Sumika Technology Co Ltd
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Sumika Technology Co Ltd
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Publication of CN108828706A publication Critical patent/CN108828706A/en
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Publication of CN108828706B publication Critical patent/CN108828706B/en
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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033Polarisers, 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
    • G02B5/3041Polarisers, 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
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528Polarisers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

A display device includes a display panel having a first surface and a second surface opposite to the first surface, a first polarization structure disposed on the first surface, the first polarization structure including a first polarizing film and having a first thickness, a second polarization structure disposed on the second surface, the second polarization structure including a second polarizing film and having a second thickness, wherein an absorption axis of the first polarizing film and an absorption axis of the second polarizing film are perpendicular to each other, the first polarizing film having a first moment τ 1, the second polarizing film having a second moment τ 2, the first moment τ 1 and the second moment τ 2 satisfying formulas 1, 2, and 3 where τ 1 is r1 × d1 × L0formula 1, r2 r2 × d2 × L90formula 2 | - τ 1- τ 2 ≦ 0.5 formula 3, wherein r1 is the shrinkage of the first polarizing film, d1 is the first thickness, L is L10is the absorption axis length of the first polarizing film, r2 is the shrinkage rate of the second polarizing film, d2 is the second thickness, L90Is the absorption axis length of the second polarizing film.

Description

Display device
Technical field
This disclosure relates to a kind of display devices.
Background technique
Development based on smart phone, many inter-vehicle information systems are outside added with connection smart phone and tablet computer to extend The ability of function, or even the system for having developed integration, therefore, fully rely on the screen of smart phone and tablet computer with it is soft Hardware starts as the concept of the intelligent automobile of operating main body by extensive discussions.Either passed using smart phone by bluetooth Send music to automobile audio or control the central controlled lock of automobile, and or using the mobile network 4G link to internet play film with Entertainment passenger, can be more universal in future.In addition, vehicle-mounted display be used to mostly display of satellite navigation, multimedia recreation, The even related important information such as instrument board speed per hour or vehicle condition.
Polarizer for liquid crystal display device for car is different from general liquid crystal display, and the critical conditions of outdoor environment are pair One test of polarizer weatherability such as travels on the big open air of moist rainy, extremely hot or severe cold region, high and low temperature drop Parking environment, the high environment shaken, or time in full summer, the environment temperature of liquid crystal display device for car may be up to 50 DEG C More than, some are directly even 70~80 DEG C reachable by sunlit surface temperature.Automaker usually requires that panel Operation temperature specification must be between -30~85 DEG C, and storage temperature specification has between -40~95 DEG C, therefore in design vehicle It, can be for the material of automobile-used specification selection high gauge when interior liquid crystal display.
However, vehicle-mounted polarizer is after harsh hot environment test, Chang Fashengyin high-temperature shrinkage and caused by Warpage (Bending) phenomenon, and warping phenomenon leads to panel deformation and is expressed to frame, in turn results in the edge light leakage of display Problem.
Summary of the invention
This disclosure relates to a kind of display devices.In embodiment, pass through the first light polarizing film in control display device The absolute value of difference between first torque τ and the second torque τ of the second light polarizing film is less than or equal to 0.5, can be effective Inhibit the warpage degree of display panel, and then can achieve the light leakage phenomena for inhibiting to generate by display panel warpage.
According to the embodiment of present disclosure, a kind of display device is provided.Display device includes display panel, the first polarisation Structure and the second structure of polarized light.Display panel has first surface and second surface, and second surface is relative to first surface.The One structure of polarized light is set on the first surface of display panel, and the first structure of polarized light includes the first light polarizing film, and the first polarisation knot Structure has first thickness.Second structure of polarized light is set on the second surface of display panel, and the second structure of polarized light includes second inclined Light film, and the second structure of polarized light have second thickness, wherein the absorption axiss of the absorption axiss of the first light polarizing film and the second light polarizing film that This is vertical.First light polarizing film has the first torque τ 1, and the second light polarizing film has the second torque τ 2, the first torque τ 1 and the second torque τ 2 meets the following Expression 1, formula 2 and formula 3:
τ 1=r1 × d1 × L0Formula 1;
τ 2=r2 × d2 × L90Formula 2;
2 formula of │≤0.5 3 of │ τ 1- τ;
Wherein, r1 is the shrinking percentage of the first light polarizing film, and d1 is first thickness, L0For the absorption shaft length of the first light polarizing film, R2 is the shrinking percentage of the second light polarizing film, and d2 is second thickness, L90For the absorption shaft length of the second light polarizing film.
More preferably understand to have to above and other aspect of the invention, will hereafter enumerate specific embodiment, and cooperate Detailed description are as follows for appended attached drawing:
Detailed description of the invention
Fig. 1 is painted a kind of stereoscopic schematic diagram of display device of the embodiment according to present disclosure.
Fig. 2 is painted a kind of diagrammatic cross-section of display device of the embodiment according to present disclosure.
Fig. 3 is painted a kind of diagrammatic cross-section of display device of another embodiment according to present disclosure.
Wherein, appended drawing reference:
1,2:Display device
10:Display panel
10A:First surface
10B:Second surface
20:First structure of polarized light
30:Second structure of polarized light
110:Length
120:Width
210:First light polarizing film
220:First glue-line
230:First protective layer
240,340:Outer protective layer
310:Second light polarizing film
320:Second glue-line
330:Second protective layer
350:Third glue-line
360:Third protective layer
A1,A2:Absorption axiss
d1:First thickness
d2:Second thickness
Specific embodiment
In the embodiment of present disclosure, pass through the first torque τ and the of the first light polarizing film in control display device The absolute value of difference between second torque τ of two light polarizing films is less than or equal to 0.5, can effectively inhibit sticking up for display panel Qu Chengdu, and then can achieve the light leakage phenomena for inhibiting to generate by display panel warpage.
Various embodiments presented below are described in detail, and embodiment is only as illustrating, to be not limiting upon this The protection scope of invention.In different embodiments and attached drawing, identical element will be indicated with identical component symbol.Value It obtains it is noted that these specific embodiments, are not intended to limit the invention.Other feature, element, side still can be used in the present invention Method and parameter are implemented.Embodiment only to be provided by way of illustrating technical characteristic of the invention, not to It limits the scope of the invention.Be familiar with those of ordinary skill in the art, by can book according to the following instructions description, do not taking off In the case where from scope of the invention, make equivalent modification and variation.In addition, the attached drawing in embodiment omits part member Part, to clearly show that technical characterstic of the invention.
Fig. 1 is painted a kind of stereoscopic schematic diagram of display device of the embodiment according to present disclosure, and Fig. 2 is painted according to this A kind of diagrammatic cross-section of display device of the embodiment of disclosure.
As shown in Fig. 1~2, display device 1 includes display panel 10, the first structure of polarized light 20 and the second structure of polarized light 30.Display panel 10 has first surface 10A and second surface 10B, and second surface 10B is relative to first surface 10A.First partially Photo structure 20 is set on the first surface 10A of display panel 10, and the first structure of polarized light 20 includes the first light polarizing film 210, and the One structure of polarized light 20 has first thickness d1.Second structure of polarized light 30 is set on the second surface 10B of display panel 10, and second Structure of polarized light 30 includes the second light polarizing film 310, and the second structure of polarized light 30 has second thickness d2, wherein the first light polarizing film 210 Absorption axiss A1 and the second light polarizing film 310 absorption axiss A2 it is perpendicular to one another.First light polarizing film 210 have the first torque τ 1, second There is light polarizing film 310 second torque τ 2, the first torque τ 1 and the second torque τ 2 to meet the following Expression 1, formula 2 and formula 3:
τ 1=r1 × d1 × L0Formula 1;
τ 2=r2 × d2 × L90Formula 2;
2 formula of │≤0.5 3 of │ τ 1- τ;
Wherein, r1 is the shrinking percentage of the first light polarizing film 210, and d1 is first thickness, L0For the absorption axiss of the first light polarizing film 210 Length, r2 are the shrinking percentage of the second light polarizing film 310, and d2 is second thickness, L90For the absorption shaft length of the second light polarizing film 310.
In the embodiment of present disclosure, the shrinking percentage r2 of the shrinking percentage r1 of the first light polarizing film 210 and the second light polarizing film 310 It is that the first light polarizing film 210 of the size with 2 millimeters (mm) × 10 millimeter (mm) and the second light polarizing film 310 are placed in temperature respectively For what is be measured in 95 DEG C of thermal analyzers.In some embodiments, the shrinking percentage r1 and second of the first light polarizing film 210 The shrinking percentage r2 of light polarizing film 310 is respectively 0N (ox)~8N, preferably can be 2N~5N.
According to the embodiment of present disclosure, by the first torque τ 1 and the second polarisation that control the first light polarizing film 210 Difference between second torque τ 2 of film 310 meets above-mentioned condition, can effectively inhibit the warpage of display panel 10 (Bending), and when the difference of torque is smaller, the warpage degree of display panel 10 is then smaller, so as to reach inhibition because Display panel warpage and the light leakage phenomena generated.
According to the embodiment of present disclosure, as shown in Fig. 1~2, first thickness d1 is, for example, the outer of the first light polarizing film 210 The distance between side surface and display panel 10, and second thickness d2 is, for example, outer surface and the display of the second light polarizing film 310 The distance between panel 10.
According to the embodiment of present disclosure, the distance between the first light polarizing film 210 and display panel 10 (first thickness D1) refer to the film for being fitted in 10 two sides of display panel with the distance between the second light polarizing film and display panel 10 (second thickness d2) The respective superposition total film thickness of the thickness of material, two sides can have an impact the difference of the first torque τ 1 and the second torque τ 2.Again The absorption axis direction difference of person, the first light polarizing film 210 and the second light polarizing film 310 will also result in the difference of torque, and then influence aobvious Show the warp direction of panel, therefore it is also contemplated that the absorption shaft length of different directions influence, the difference of calculated torque As a result whole warp direction can be indicated, if the difference of torque is positive, whole warpage is the side towards the first light polarizing film 210 To warpage, and the more big then warpage degree of the difference of torque is more serious;Conversely, if the difference of torque is negative, whole warpage is Towards the direction warpage of the second light polarizing film 310.
In other words, according to the embodiment of present disclosure, the first torque τ 1 of the first light polarizing film 210 and the second light polarizing film Difference between 310 the second torque τ 2 need to consider all factors in formula 1, formula 2 and formula 3 simultaneously, including two light polarizing films Absorption shaft length (the L of shrinking percentage (r1, r2), the thickness (d1, d2) of two structure of polarized light and two light polarizing films0、L90), not It is single or only two factors just can influence the difference of torque completely.Specifically, the shrinking percentage of light polarizing film is to indicate polarisation The shrinkage character of the material of film, and the thickness of structure of polarized light and the absorption shaft length of light polarizing film are further by area and thickness direction Influence factor account for, therefore the improvement of the whole warpage degree of display device is first based on the first light polarizing film 210 The result of difference between torque τ 1 and the second torque τ 2 of the second light polarizing film 310 and determine.
In some embodiments, when the length 110 of display panel 10 is 1.0~1.5 relative to the ratio of width 120, the The difference of one torque τ 1 and the second torque τ 2 are 0Nm (ox rice)~0.4Nm, preferably 0Nm~0.3Nm, more preferably for 0Nm~ 0.20Nm。
In some embodiments, when the length 110 of display panel 10 is 1.5~2 relative to the ratio of width 120, first The difference of torque τ 1 and the second torque τ 2 are 0Nm~0.3Nm, and preferably 0Nm~0.2Nm is more preferably 0Nm~0.15Nm.
In some embodiments, when the length 110 of display panel 10 is 2.0~2.3 relative to the ratio of width 120, the The difference of one torque τ 1 and the second torque τ 2 are 0Nm~0.4Nm, and preferably 0Nm~0.3Nm is more preferably 0Nm~0.2Nm.
In some embodiments, when the length 110 of display panel 10 is 2.3~3.0 relative to the ratio of width 120, the The difference of one torque τ 1 and the second torque τ 2 are 0Nm~0.5Nm, and preferably 0Nm~0.4Nm is more preferably 0Nm~0.3Nm.
As shown in the 1st~2 figure, in embodiment, the first structure of polarized light 20 can further comprise the first glue-line 220 and first Protective layer 230, the first glue-line 220 can be bonded to the first surface 10A of display panel 10, and the first protective layer 230 is set to first On glue-line 220, the first light polarizing film 210 is set on the first protective layer 230.In the present embodiment, the protection of the first glue-line 220, first The overall thickness of layer 230 and the first light polarizing film 210 is first thickness d1.The thickness range of first thickness d1 can for 15 microns~ 160 microns, preferable thickness range is 60 microns~110 microns.
As shown in the 1st~2 figure, in embodiment, the second structure of polarized light 30 can further comprise the second glue-line 320 and second Protective layer 330, the second glue-line 320 can be bonded to the second surface 10B of display panel 10, and the second protective layer 330 is set to second On glue-line 320, the second light polarizing film 310 is set on the second protective layer 330.In the present embodiment, the protection of the second glue-line 320, second The overall thickness of layer 330 and the second light polarizing film 310 is second thickness d2.Second thickness d2 thickness range can be 15 microns~160 Micron, preferable thickness range are 60 microns~110 microns.
In embodiment, first thickness d1 can be identical or different with second thickness d2.In some embodiments, first thickness d1 Difference with second thickness d2 can be between 0 micron (μm) to 170 microns, and preferable difference range can be 0 micron to 100 microns Between.Such as 20 microns can be greater than or equal to;In some other embodiments, the difference example of first thickness d1 and second thickness d2 25 microns can be such as greater than or equal to;In some other embodiments, the difference of first thickness d1 and second thickness d2 for example can be with More than or equal to 65 microns;In some other embodiments, the difference of first thickness d1 and second thickness d2 can for example be greater than or Equal to 100 microns;In some other embodiments, the difference of first thickness d1 and second thickness d2 can for example be less than or equal to 170 microns.
In embodiment, display panel 10 is liquid crystal display panel, may be, for example, IPS liquid crystal display panel or VA liquid crystal Show panel.
In embodiment, as shown in the 1st~2 figure, display device 1 can further comprise two outer protective layers 240,340, outside Layer protective layer 240 and outer protective layer 340 be respectively arranged at the first light polarizing film 210 outside and the second light polarizing film 310 it is outer Side.
In embodiment, the material of the first light polarizing film 210 and the second light polarizing film 310 can be polyvinyl alcohol (PVA) resin film, gather Vinyl alcohol film can be made by saponified poly resin.The example of polyvinyl acetate resin includes that the list of vinyl acetate is poly- The copolymer of object, i.e. polyvinyl acetate and vinyl acetate and other monomers that copolyreaction can be carried out with vinyl acetate.It is other The example for the monomer that can carry out copolyreaction with vinyl acetate include unsaturated carboxylic acid (such as acrylic acid, methacrylic acid, propylene Acetoacetic ester, positive propyl acrylate, methyl methacrylate), alkene (such as ethylene, propylene, 1- butylene, 2- first propylene), ethylene Ether (such as ethyl vinyl ether, ethylene methacrylic ether, n-propyl vinethene, isopropyl-ethylene ether), unsaturated sulfonic acid (such as vinyl Sulfonic acid, sodium vinyl sulfonate) etc..The thickness of first light polarizing film 210 and the thickness of the second light polarizing film 310 may respectively be 5~35 Micron, preferably 20~30 microns, such as about 25 microns.
In embodiment, the material of the first protective layer 230, the second protective layer 330 and outer protective layer 240,340 can be transparent The excellent thermoplastic resin such as property, mechanical strength, thermal stability, moisture barrier, such as may include cellulose-based resin, third Olefin(e) acid system resin, amorphism polyolefin-based resins, polyester based resin, polycarbonate-based resin and combinations thereof specifically may include Polymethyl methacrylate (Polymethylmethacrylate, PMMA), cellulose-based resin refer to part in cellulose Hydroxyl by the resin of acid esterification, or a part by acid esterification, a part by other Esterification mixed esters.It is cellulose-based Resin is preferably cellulose esters system resin, more preferably acetylcellulose system resin, such as tri acetyl cellulose, diacetyl Cellulose, cellulose acetate propionate, cellulose acetate butyrate etc., the cellulose being sufficiently esterified are known as three acetic acid fibre Tie up element (triacetate cellulose, TAC), acrylic resin film, poly aromatic hydroxyl resin film, polyether resin film, ring polyene Hydrocarbon resin film (such as poly- bornylene resin film), polycarbonate-based resin are for example formed by by carbonic acid and glycol or bis-phenol poly- Ester, such as:Polyethylene terephthalate (Polyethylene Terephthalate, PET), polypropylene (Polypropylene, PP), polyethylene (polyethylene, PE), amorphism polyolefin series resin such as cyclic olefin Monomer (co) polymer (cyclo olefin (co) polymers, COC/COP), by norbornene, cyclopentadiene, two rings penta 2 The ring-opening polymerization polymers such as alkene, tetracyclododecane, or constitute with the co-polymer of olefines, polycarbonate Group composed by (Polycarbonate, PC) and above-mentioned any combination.In addition to this, protective layer material also can be for example The thermosetting resins such as (methyl) acrylic acid series, amido formate system, acrylic amine carbamate system, epoxy, poly- silicon oxygen system Or uv-hardening resin.It is surface-treated in addition, can also further carry out above-mentioned protective layer, for example, anti-glare treatment, anti- Reflection processing, hard coating, electrification prevent processing or anti-pollution processing etc..In embodiment, the thickness of the first protective layer 230, second The thickness of the thickness of protective layer 330, the thickness of outer protective layer 240 and outer protective layer 340 may respectively be 5~90 microns, compared with Good is 20~50 microns, such as about 20~40 microns.
In embodiment, the first glue-line 220 and the second glue-line 320 are, for example, pressure sensitive adhesive or optical cement.The thickness of first glue-line 220 The thickness of degree and the second glue-line 320 may respectively be 5~35 microns, preferably 20~30 microns, such as about 25 microns.
Fig. 3 is painted a kind of diagrammatic cross-section of display device of another embodiment according to present disclosure.The present embodiment In with the same or similar element of previous embodiment continue to use same or like element numbers, and the correlation of same or similar element Illustrate to please refer to aforementioned, details are not described herein.
In display device 2, the second structure of polarized light 30 further comprises third glue-line 350 and third protective layer 360, third Glue-line 350 is bonded to the second protective layer 330, and third protective layer 360 is set on third glue-line 350, third glue-line 350 and third Protective layer 360 is between the second glue-line 320 and the second light polarizing film 310.In the present embodiment, the second glue-line 320, third protective layer 360, the overall thickness of third glue-line 350, the second protective layer 330 and the second light polarizing film 310 is second thickness d2.Second thickness d2 Thickness range can be 25 microns~285 microns, and preferable thickness range is 100 microns~190 microns.
Embodiment is described further below.The structure for being listed below the structure of polarized light of several embodiments and comparative example is thin Section, torque numerical value and light leakage test result, to illustrate the characteristic using display device obtained by present disclosure, wherein with thickness The glass substrate that degree is 0.5mm replaces display panel to carry out test below and feature measurement.However embodiment below is only For the use illustrated, and it is not necessarily to be construed as the limitation of present disclosure Content Implementation.
The Aspect Ratio of the glass substrate of following example 1~4 and comparative example 1 is 16:9, the size of glass substrate is 272.3mm × 153.17mm absorbs shaft length L0For 272.3mm, shaft length L is absorbed90For 153.17mm;Embodiment 6~8 and ratio Aspect Ratio compared with the glass substrate of example 2 is 21:9, the size of glass substrate is 287.16mm × 123.07mm, absorbs shaft length L0For 287.16mm, shaft length L is absorbed90For 123.07mm, and the thickness of the thickness of outer protective layer 240 and outer protective layer 340 Degree is 40 microns;Warpage results then indicate sample in the height by the condition treated edge warping protrusion.Remaining Related data please refers to table 1.
Table 1
1 (Continued) of table
Although so it is not intended to limiting the invention in conclusion the present invention is disclosed as above with embodiment.It is familiar with ability The those of ordinary skill in domain without departing from the spirit and scope of the present invention, when various modifications may be made and modify.Therefore, Protection scope of the present invention is determined by the appended claims.

Claims (13)

1. a kind of display device, including:
Display panel has first surface and second surface, and the second surface is relative to the first surface;
First structure of polarized light is set on the first surface of the display panel, and first structure of polarized light includes first Light polarizing film, and first structure of polarized light has first thickness;With
Second structure of polarized light is set on the second surface of the display panel, and second structure of polarized light includes second Light polarizing film, and second structure of polarized light has second thickness, wherein the absorption axiss of first light polarizing film and described second are partially The absorption axiss of light film are perpendicular to one another;
Wherein, first light polarizing film has the first torque τ 1, and second light polarizing film has the second torque τ 2, first power Square τ 1 and the second torque τ 2 meet the following Expression 1, formula 2 and formula 3:
τ 1=r1 × d1 × L0Formula 1;
τ 2=r2 × d2 × L90Formula 2;
2 formula of │≤0.5 3 of │ τ 1- τ;
Wherein, r1 is the first shrinking percentage of first light polarizing film, and d1 is the first thickness, L0For first light polarizing film Shaft length is absorbed, r2 is the second shrinking percentage of second light polarizing film, and d2 is the second thickness, L90For second light polarizing film Absorption shaft length.
2. display device according to claim 1, wherein the length of the display panel is 1.0 relative to the ratio of width The difference of~1.5, the first torque τ 1 and the second torque τ 2 are 0Nm~0.4Nm;Or the length phase of the display panel Ratio for width is 1.5~2, and the difference of the first torque τ 1 and the second torque τ 2 are 0Nm~0.3Nm.
3. display device according to claim 1, wherein the length of the display panel is 2.0 relative to the ratio of width The difference of~2.3, the first torque τ 1 and the second torque τ 2 are 0Nm~0.4Nm;Or the length phase of the display panel Ratio for width is 2.3~3.0, and the difference of the first torque τ 1 and the second torque τ 2 are 0Nm~0.5Nm.
4. display device according to claim 1, wherein first structure of polarized light further comprises:
First glue-line is bonded to the first surface of the display panel;With
First protective layer is set on first glue-line, wherein first light polarizing film is set on first protective layer.
5. display device according to claim 4, wherein second structure of polarized light further comprises:
Second glue-line is bonded to the second surface of the display panel;With
Second protective layer is set on second glue-line, wherein second light polarizing film is set on second protective layer.
6. display device according to claim 5, wherein the first thickness is first glue-line, first protection The overall thickness of layer and first light polarizing film, and the second thickness is second glue-line, second protective layer and described The overall thickness of second light polarizing film.
7. display device according to claim 6, wherein the range of the first thickness is 15 microns~160 microns, and/ Or the range of the second thickness is 15 microns~160 microns.
8. display device according to claim 5, wherein second structure of polarized light further comprises:
Third glue-line is bonded to second protective layer;And
Third protective layer is set on the third glue-line, wherein the third glue-line and the third protective layer are positioned at described Between second glue-line and second light polarizing film.
9. display device according to claim 8, wherein
The first thickness is the overall thickness of first glue-line, first protective layer and first light polarizing film;And
The second thickness is second glue-line, the third protective layer, the third glue-line, second protective layer and institute State the overall thickness of the second light polarizing film.
10. display device according to claim 9, wherein the range of the first thickness is 15 microns~160 microns, And/or the range of the second thickness is 25 microns~285 microns.
11. display device according to claim 1, wherein the difference of the first thickness and the second thickness is 0 micro- Rice is between 170 microns;And/or described the of the first shrinking percentage r1 of first light polarizing film and second light polarizing film Two shrinking percentage r2 are respectively 0N~8N.
12. display device according to claim 1, wherein the display panel is IPS liquid crystal display panel or VA liquid crystal Display panel.
13. display device according to claim 1, further comprises:
Two outer protective layers are respectively arranged at the outside of first light polarizing film and the outside of second light polarizing film.
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