CN112394442A - Polaroid, display panel and preparation method of display panel - Google Patents
Polaroid, display panel and preparation method of display panel Download PDFInfo
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- CN112394442A CN112394442A CN202011126379.2A CN202011126379A CN112394442A CN 112394442 A CN112394442 A CN 112394442A CN 202011126379 A CN202011126379 A CN 202011126379A CN 112394442 A CN112394442 A CN 112394442A
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- 230000003287 optical effect Effects 0.000 claims abstract description 100
- 230000010287 polarization Effects 0.000 claims abstract description 37
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- 238000001338 self-assembly Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 5
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- 238000005240 physical vapour deposition Methods 0.000 description 3
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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
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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
- G02B5/3083—Birefringent or phase retarding elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Polarising Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application discloses polaroid, display panel and preparation method thereof, the polaroid includes: an optical compensation layer; a transparent layer located on one side surface of the optical compensation layer, wherein the orthographic projection of the transparent layer on the optical compensation layer covers a part of the optical compensation layer; a linear polarizing layer at least partially surrounding the transparent layer, wherein a height of the linear polarizing layer is greater than or less than a height of the transparent layer. Through the mode, the polarizer can form a little polarization area or even a non-polarization area on the polarizer in a non-cutting mode.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a polarizer, a display panel and a preparation method of the display panel.
Background
At present, in order to improve the screen ratio and improve the appearance, the front camera generally adopts a design mode under the screen. In order to reduce the reflection of the metal layer in the display panel to the external ambient light, a polarizer is generally required to be disposed above the encapsulation layer.
However, the transmittance of the polarizer is usually lower than 50%, which seriously affects the shooting quality of the front camera below the polarizer. Therefore, the polarizer corresponding to the position of the front camera is generally required to be cut and removed entirely to improve the transmittance at the position of the front camera. However, the cutting and removing of the polarizer may affect the appearance of the whole display panel and destroy the integrity of the whole panel.
Disclosure of Invention
The application provides a polaroid, a display panel and a preparation method thereof, and aims to solve the technical problems that the appearance effect of the whole display panel is influenced and the integrity of a full-face screen is damaged by cutting and removing the polaroid.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a polarizer including: an optical compensation layer; a transparent layer located on one side surface of the optical compensation layer, wherein the orthographic projection of the transparent layer on the optical compensation layer covers a part of the optical compensation layer; a linear polarizing layer at least partially surrounding the transparent layer, wherein a height of the linear polarizing layer is greater than or less than a height of the transparent layer.
Wherein the height of the transparent layer is at least 1/3 the height of the linear polarizing layer.
Wherein the linear polarization layer covers the side surface of the transparent layer and the surface of the side far away from the optical compensation layer.
Wherein, the surface of the transparent layer far away from the optical compensation layer is a low surface energy surface, and the low surface energy surface is exposed from the linear polarization layer.
The transparent layer is made of a low-surface-energy material; or the surface of one side of the transparent layer, which is far away from the optical compensation layer, is the low surface energy surface formed by plasma modification or monomolecular self-assembly modification.
Wherein, still include: and the hardening layer covers the transparent layer and one side of the linear polarization layer, which is far away from the optical compensation layer.
In order to solve the above technical problem, another technical solution adopted by the present application is: provided is a display panel including: a light emitting layer; an encapsulation layer covering the light emitting layer; the optical compensation layer is positioned on one side, away from the light emitting layer, of the packaging layer; the transparent layer is positioned on the side, facing away from the light emitting layer, of the optical compensation layer, and the orthographic projection of the transparent layer on the optical compensation layer covers part of the optical compensation layer; a linear polarizing layer at least partially surrounding the transparent layer, wherein a height of the linear polarizing layer is greater than or less than a height of the transparent layer.
In order to solve the above technical problem, the present application adopts another technical solution: provided is a method for manufacturing a display panel, including: coating the side, away from the light-emitting layer, of the packaging layer to form an optical compensation layer; forming a transparent layer on one side surface of the optical compensation layer, wherein the orthographic projection of the transparent layer on the optical compensation layer covers a part of the optical compensation layer; and forming a linear polarization layer at least partially surrounding the transparent layer on the one side surface of the optical compensation layer, wherein the height of the linear polarization layer is greater than or less than that of the transparent layer.
Wherein the step of forming a linear polarizing layer at least partially surrounding the transparent layer on the one side surface of the optical compensation layer comprises: and coating the linear polarization layer on the surface of one side of the optical compensation layer, wherein the coating operation covers the transparent layer.
Wherein the step of forming a transparent layer on one side surface of the optical compensation layer comprises: forming a transparent layer on one side surface of the optical compensation layer using a low surface energy substance; alternatively, the step of forming a linear polarizing layer at least partially surrounding the transparent layer on the one side surface of the optical compensation layer comprises: forming a low surface energy surface on one side of the transparent layer far away from the optical compensation layer by adopting a plasma modification or monomolecular self-assembly modification mode; the step of forming a linear polarizing layer at least partially surrounding the transparent layer on the one side surface of the optical compensation layer includes: and the linear polarization layer is coated and formed on the surface of one side of the optical compensation layer, and the surface of one side, far away from the optical compensation layer, of the transparent layer is exposed out of the linear polarization layer.
Being different from the prior art situation, the beneficial effect of this application is: the polarizer provided by the application comprises an optical compensation layer, a transparent layer and a linear polarizing layer, wherein the transparent layer and the linear polarizing layer are positioned on one side of the optical compensation layer; the linear polarization layer at least partially surrounds the transparent layer, and the height of the linear polarization layer is larger than or smaller than that of the transparent layer. On one hand, the position of the transparent layer can be subsequently corresponding to the position of optical elements such as a front camera, and compared with the traditional mode of cutting and removing the whole polaroid, the method has the advantages of simple process and easy realization. On the other hand, the high design mode of the linear polarization layer and the transparent layer can effectively reduce the complexity of the process preparation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of an embodiment of a polarizer of the present application;
FIG. 2 is a schematic structural diagram of another embodiment of a polarizer of the present application;
FIG. 3 is a schematic structural diagram of another embodiment of a polarizer of the present application;
FIG. 4 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of an embodiment of a display device according to the present application;
fig. 6 is a schematic flow chart illustrating a manufacturing method of a display panel according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a polarizer of the present application, in which the polarizer 10 includes: an optical compensation layer 100, a transparent layer 102, and a linear polarizing layer 104.
Specifically, the optical compensation layer 100 may function to increase a viewing angle and the like, and may be an 1/4 slide 1000, or a 1/4 slide 1000 and a 1/2 slide 1002 arranged in a stack; when passing through the optical compensation layer 100, the linearly polarized light may become elliptically polarized light and then exit.
A transparent layer 102 is disposed on one side surface of the optical compensation layer 100, and the transparent layer 102 is formed of a transparent material having no polarization effect, for example, some photoresist, SOG (silicon-glass bonded structure material), SiOx, SiNx, or the like; in order to further increase the light transmittance, the transparent layer 102 may be made of a material having a high light transmittance. When the optical compensation layer 100 includes the 1/4 slide 1000 and the 1/2 slide 1002 disposed in a stack, the transparent layer 102 may be located on the surface of the 1/2 slide 1002. The orthographic projection of the transparent layer 102 on the optical compensation layer 100 may be a regular pattern (for example, a circle, an ellipse, a rectangle, etc.), or an irregular pattern, etc.
The linear polarizing layer 104 at least partially surrounds the transparent layer 102, and the height d1 of the linear polarizing layer 104 is greater than the height d2 of the transparent layer 102; alternatively, as shown in fig. 2, fig. 2 is a schematic structural view of another embodiment of the polarizer of the present application, and the height d1a of the linear polarizing layer 104a may also be less than the height d2a of the transparent layer 102 a. Wherein, the above-mentioned at least partially surrounding the transparent layer 102 means: the linear polarizing layer 104 and the transparent layer 102 are located on the same side of the optical compensation layer 100, and the linear polarizing layer 104 is disposed at least at a part of the surface of the transparent layer 102.
On one hand, the position of the transparent layer 102 may correspond to the position of an optical element such as a front camera, which is simpler and easier to implement than the conventional method of cutting and removing the whole polarizer 10. On the other hand, for the height design mode of the linear polarization layer 104 and the transparent layer 102, the process preparation complexity can be effectively reduced; this is because it is necessary to strictly control the height of the linear polarization layer 104 and the transparent layer 102 at the time of formation if the leveling purpose is to be achieved, and to introduce a process such as etching after the formation of the linear polarization layer 104 and the transparent layer 102 to make the linear polarization layer 104 and the transparent layer 102 flush, compared to the case where the linear polarization layer 104 and the transparent layer 102 are flush.
In one embodiment, the height d2 of the transparent layer 102 is at least 1/3 of the height d1 of the linear polarizing layer 104. For example, d2/d1 is 0.5, 0.8, 0.9, 0.95, 1.05, 1.1, 1.2, etc. Obviously, when the value of d2/d1 is less than 1, as shown in FIG. 1, it indicates that the height d2 of the transparent layer 102 is less than the height d1 of the linear polarizing layer 104; when the value of d2a/d1a is greater than 1, as shown in FIG. 2, it indicates that the height d2a of the transparent layer 102a is greater than the height d1a of the linear polarizing layer 104 a. When the height d2a of the transparent layer 102a is greater than the height d1a of the linear polarizing layer 104a, the value of d2a/d1a may be less than or equal to 1.5 in order to reduce the thickness of the polarizer 10a and save cost. Of course, the setting can be specifically performed according to actual requirements. The design mode of the height can reduce the difficulty of preparation in the process.
In one application scenario, as shown in fig. 1, the height d1 of the linear polarizing layer 104 is greater than the height d2 of the transparent layer 102, and the linear polarizing layer 104 covers the side of the transparent layer 102 and the surface away from the optical compensation layer 100. This design may make the surface of the polarizer 10 relatively flat.
In another application scenario, as shown in fig. 3, fig. 3 is a schematic structural diagram of another embodiment of the polarizer of the present application. The height d1b of the linear polarizing layer 104b is greater than the height d2b of the transparent layer 102b, and the surface of the transparent layer 102b away from the optical compensation layer 100b is a low surface energy surface exposed from the linear polarizing layer 104 b. Due to the existence of the low surface energy surface, when the linear polarization layer 104b is formed by a coating method, the solution forming the linear polarization layer 104b cannot be soaked and spread on the surface of the low surface layer, so that the wireless polarization layer 104b with the low surface energy surface exists, the light transmittance at the transparent layer 102b can be further improved by the method, and the imaging quality of the optical elements such as the front camera at the subsequent position is better. Of course, for the reason that the height d1a of the linear polarization layer 104a in fig. 2 is less than the height d2a of the transparent layer 102a, the surface of the transparent layer 102a away from the optical compensation layer 100a can also be a low surface energy surface, and the above effect can also be achieved by this design.
Further, in order to realize the above low surface energy surface, the following means may be adopted:
the first method is as follows: the transparent layer 102a/102b is made of a low surface energy material, for example, the transparent layer 102a/102b can be formed by directly selecting a photoresist with low surface energy from the prior art, and all the outer surfaces of the transparent layer 102a/102b are low surface energy surfaces.
The second method comprises the following steps: the transparent layer 102a/102b is not formed by a low surface energy material, and the surface of the transparent layer far away from the optical compensation layer 100a/100b is a low surface energy surface formed by plasma modification or monomolecular self-assembly modification.
The third method comprises the following steps: the transparent layer 102a/102b is formed by a stack of at least two transparent sublayers, and the transparent sublayer furthest from the optical compensation layer 100a/100b is formed of a low surface energy material.
The technical means for realizing the methods are mature and easy to realize.
In another embodiment, referring to fig. 1 again, the polarizer 10 further includes a hardening layer 106 covering the transparent layer 102 and the linear polarizing layer 104 on the side away from the optical compensation layer 100. The hardened layer 106 may protect the lower linear polarizer layer 104, and may make the surface of the polarizer 10 smoother. In the present embodiment, the hardened layer 106 may be an inorganic material such as silicon oxide, which can be formed by a solid-state film forming method such as CVD (chemical vapor deposition) or PVD (physical vapor deposition). As shown in fig. 2 or 3, when the transparent layer 102a/102b has a low surface energy surface, the low surface energy surface does not affect solid film formation, so that additional processing of the low surface energy surface of the transparent layer 102a/102b between the formation of the hardened layers 106a/106b is not required, and the process complexity can be reduced.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a display panel 20 according to an embodiment of the present disclosure, which includes a light emitting layer 200, an encapsulation layer 202, an optical compensation layer 204, a transparent layer 206, and a linear polarization layer 208.
Specifically, the light emitting layer 200 may include a plurality of light emitting units, which may be OLED light emitting units or the like, which may emit red, green, or blue light, or the like. The packaging layer 202 covers the light-emitting layer 200 and is used for blocking water and oxygen so as to reduce the corrosion of the water and oxygen to the light-emitting layer 200 and improve the service life of the light-emitting layer 200; the encapsulation layer 202 may include an inorganic layer-an organic layer-an inorganic layer, etc. in a stacked arrangement. The optical compensation layer 204 may be located on a side of the encapsulation layer 202 away from the light-emitting layer 200, and specific structures of the optical compensation layer 204 can be found in the above embodiments, which are not described herein again. The transparent layer 206 is located on a side of the optical compensation layer 204 away from the light-emitting layer 200, and an orthogonal projection of the transparent layer 206 on the optical compensation layer 204 covers a part of the optical compensation layer 204. The linear polarizing layer 208 at least partially surrounds the transparent layer 206, and the height of the linear polarizing layer 208 is greater than or less than the height of the transparent layer 206, and specific structural designs of the linear polarizing layer 208 and the transparent layer 206 can be found in the above embodiments, and are not described herein again.
Of course, in other embodiments, the display panel 20 may also include other structures, such as an array layer, a side of the light emitting layer 200 facing away from the encapsulation layer 202, and the like. As another example, the stiffening layer 201 covers the transparent layer 208 and the side of the linear polarizing layer 206 remote from the optical compensation layer 204.
In the above embodiments, the optical compensation layer 204 is directly coated on the encapsulation layer 202, and in other embodiments, an optical adhesive or the like may be further included between the optical compensation layer 204 and the encapsulation layer 202, that is, a polarizer is formed first, and then the polarizer is attached and fixed to the encapsulation layer 202 to form the display panel 20.
Further, please refer to fig. 5, wherein fig. 5 is a schematic structural diagram of an embodiment of the display device of the present application. The display device 30 includes the display panel 20 and the camera module 22 in the above embodiments. The camera module 22 can be disposed on the non-light-emitting surface of the display panel 20 and corresponds to the transparent layer 206. Preferably, the transparent layer 206 is orthographically projected onto the optical compensation layer 204 to cover the photosensitive area of the camera module 22. In addition, the display device may further include a cover plate (not shown), and the cover plate may be fixedly disposed on the light emitting surface side of the display panel 20 by using an optical adhesive or the like.
Referring to fig. 4 and fig. 6 together, fig. 6 is a schematic flow chart illustrating a manufacturing method of a display panel according to an embodiment of the present application, the manufacturing method including:
s101: an optical compensation layer 204 is coated on the side of the encapsulation layer 202 facing away from the light-emitting layer 200.
Specifically, when the optical compensation layer 204 includes 1/4 glass 2040 and 1/2 glass 2042, which are stacked, the encapsulation layer 202 may be coated on the side facing away from the luminescent layer 200 to form 1/4 glass 2040, and then coated on the 1/4 glass 2040 side facing away from the luminescent layer 200 to form 1/2 glass 2042.
S102: a transparent layer 206 is formed on one side surface of the optical compensation layer 204, and an orthogonal projection of the transparent layer 206 on the optical compensation layer 204 covers a part of the optical compensation layer 204.
Specifically, when the transparent layer 206 is made of a photoresist, a whole layer of photoresist may be first formed by coating the optical compensation layer 204 on a side away from the light emitting layer 200, and then the unnecessary photoresist is removed by an exposure and development process, so as to form the transparent layer 206 at a predetermined position.
S103: a linear polarizing layer 208 at least partially surrounding the transparent layer 206 is formed on one side surface of the optical compensation layer 204, and the height of the linear polarizing layer 208 is greater than or less than the height of the transparent layer 206.
Specifically, in one embodiment, when the height of the linear polarization layer 208 is greater than the height of the transparent layer 206, the specific implementation process of the step S103 may be: a linear polarizing layer 208 is applied to one side surface of the optical compensation layer 204 and the coating operation covers the transparent layer 206. The process is simple, and because the transparent layer 206 has a certain height, the thickness of the linear polarization layer 208 covered on the transparent layer 206 is thin, the polarization degree is low, and the light transmittance is high, so that the light transmittance of the transparent layer 206 area is improved, and the shooting effect of the camera under the screen is improved.
In another embodiment, when the height of the linear polarization layer 204 is greater than or less than the height of the transparent layer 206, the step S102 may be implemented by: forming a transparent layer 206 on one side surface of the optical compensation layer 204 using a low surface energy substance; alternatively, before step S103, the method further includes: a low surface energy surface is formed on the side of the transparent layer 206 away from the optical compensation layer 204 by means of plasma modification or monomolecular self-assembly modification.
Further, the specific implementation process of step S103 may be: a linear polarizing layer 208 is coated on one side surface of the optical compensation layer 204, and the transparent layer 206 is exposed from the linear polarizing layer 208 on the side surface away from the optical compensation layer 204. The above-described manner may enable the non-polarized layer 208 to be applied to the transparent layer 206 to further increase the light transmittance at the transparent layer 206.
In another embodiment, after step S103, the preparation method provided by the present application further includes: the hardened layer 201 is formed by solid state film formation (e.g., CVD, PVD, etc.) on the transparent layer 206 and the linear polarization layer 208 away from the optical compensation layer 204. The surface of the hardened layer 201 on the side away from the optical compensation layer 204 is flat. The above solid-state film formation method can form a film normally even when the surface of the transparent layer 206 has a low surface energy, and does not require additional processing for the transparent layer 206.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A polarizer, comprising:
an optical compensation layer;
a transparent layer located on one side surface of the optical compensation layer, wherein the orthographic projection of the transparent layer on the optical compensation layer covers a part of the optical compensation layer;
a linear polarizing layer at least partially surrounding the transparent layer, wherein a height of the linear polarizing layer is greater than or less than a height of the transparent layer.
2. The polarizer of claim 1,
the transparent layer has a height of at least 1/3 the height of the linear polarizing layer.
3. The polarizer of claim 1,
the linear polarization layer covers the side face of the transparent layer and the surface of the side far away from the optical compensation layer.
4. The polarizer of claim 1,
and the surface of one side of the transparent layer, which is far away from the optical compensation layer, is a low surface energy surface, and the low surface energy surface is exposed out of the linear polarization layer.
5. The polarizer of claim 4,
the transparent layer is made of a low-surface-energy material; alternatively, the first and second electrodes may be,
the surface of one side of the transparent layer, which is far away from the optical compensation layer, is the low surface energy surface formed by plasma modification or monomolecular self-assembly modification.
6. The polarizer of claim 1, further comprising:
and the hardening layer covers the transparent layer and one side of the linear polarization layer, which is far away from the optical compensation layer.
7. A display panel, comprising:
a light emitting layer;
an encapsulation layer covering the light emitting layer;
the optical compensation layer is positioned on one side, away from the light emitting layer, of the packaging layer;
the transparent layer is positioned on the side, facing away from the light emitting layer, of the optical compensation layer, and the orthographic projection of the transparent layer on the optical compensation layer covers part of the optical compensation layer;
a linear polarizing layer at least partially surrounding the transparent layer, wherein a height of the linear polarizing layer is greater than or less than a height of the transparent layer.
8. A method for manufacturing a display panel, comprising:
coating the side, away from the light-emitting layer, of the packaging layer to form an optical compensation layer;
forming a transparent layer on one side surface of the optical compensation layer, wherein the orthographic projection of the transparent layer on the optical compensation layer covers a part of the optical compensation layer;
and forming a linear polarization layer at least partially surrounding the transparent layer on the one side surface of the optical compensation layer, wherein the height of the linear polarization layer is greater than or less than that of the transparent layer.
9. A producing method according to claim 8, wherein said step of forming a linearly polarizing layer at least partially surrounding said transparent layer on said one side surface of said optical compensation layer comprises:
and coating the linear polarization layer on the surface of one side of the optical compensation layer, wherein the coating operation covers the transparent layer.
10. The method according to claim 8,
the step of forming a transparent layer on one side surface of the optical compensation layer includes: forming a transparent layer on one side surface of the optical compensation layer using a low surface energy substance; alternatively, the step of forming a linear polarizing layer at least partially surrounding the transparent layer on the one side surface of the optical compensation layer comprises: forming a low surface energy surface on one side of the transparent layer far away from the optical compensation layer by adopting a plasma modification or monomolecular self-assembly modification mode;
the step of forming a linear polarizing layer at least partially surrounding the transparent layer on the one side surface of the optical compensation layer includes: and the linear polarization layer is coated and formed on the surface of one side of the optical compensation layer, and the surface of one side, far away from the optical compensation layer, of the transparent layer is exposed out of the linear polarization layer.
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| JP2016191805A (en) * | 2015-03-31 | 2016-11-10 | 大日本印刷株式会社 | Polarizer, manufacturing method of the polarizer, and liquid crystal display device |
| CN110208891A (en) * | 2019-05-21 | 2019-09-06 | 华为技术有限公司 | A kind of polaroid, display screen and mobile terminal |
| CN211454015U (en) * | 2019-08-29 | 2020-09-08 | 华为机器有限公司 | Polaroid, display module and display device |
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