WO2020258908A1 - 偏光片、电子设备及偏光片的制备方法 - Google Patents

偏光片、电子设备及偏光片的制备方法 Download PDF

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Publication number
WO2020258908A1
WO2020258908A1 PCT/CN2020/077035 CN2020077035W WO2020258908A1 WO 2020258908 A1 WO2020258908 A1 WO 2020258908A1 CN 2020077035 W CN2020077035 W CN 2020077035W WO 2020258908 A1 WO2020258908 A1 WO 2020258908A1
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WIPO (PCT)
Prior art keywords
film
area
base film
linear polarizing
polarizing film
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.)
Ceased
Application number
PCT/CN2020/077035
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English (en)
French (fr)
Inventor
刘仁杰
陈钢
徐古胜
陈玲艳
张航
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan New Flat Panel Display Technology Center Co Ltd
Kunshan Govisionox Optoelectronics Co Ltd
Original Assignee
Kunshan New Flat Panel Display Technology Center Co Ltd
Kunshan Govisionox Optoelectronics Co Ltd
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Application filed by Kunshan New Flat Panel Display Technology Center Co Ltd, Kunshan Govisionox Optoelectronics Co Ltd filed Critical Kunshan New Flat Panel Display Technology Center Co Ltd
Publication of WO2020258908A1 publication Critical patent/WO2020258908A1/zh
Priority to US17/390,040 priority Critical patent/US12013560B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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

Definitions

  • This application relates to the technical field of electronic devices, and in particular to a polarizer, an electronic device and a preparation method of the polarizer.
  • the polarizer will cause low transmittance of the camera arranged on one side of the screen, so it is usually necessary to groove the polarizer corresponding to the position of the camera to form a depolarized area.
  • the inventor of the present application found that the above-mentioned method of forming the depolarization area is more complicated; and when the polarizer is attached to the cover plate in the later stage, the optical adhesive OCA cannot completely fill the gap formed by the groove in the polarizer. , Which in turn will cause optical problems, and may cause dust to accumulate in this recessed area.
  • the present application provides a polarizer, an electronic device, and a preparation method of the polarizer, which can form a depolarized area relatively simply.
  • a technical solution adopted in this application is to provide a polarizer, including: a base film, one side surface of which is defined with a first area and a second area surrounding the first area; a linear polarizing film located on the The one side surface of the base film and covers the second area; a transparent filler, which is arranged in the same layer as the linear polarizing film and covers the first area; a retardation film, which covers the linear polarizing film and The transparent filler is away from the side of the base film.
  • an electronic device including: a display layer; a retardation film located on one side of the display layer; a linear polarizing film located on a side of the retardation film away from the display layer , And the linear polarizing film is provided with an opening; a transparent filler is located in the opening; an optical device is located on the side of the display layer opposite to the retardation film, and the photosensitive area of the optical device is connected to the The opening position corresponds.
  • Another technical solution adopted in this application is to provide a method for preparing a polarizer, the preparation method comprising: forming a linear polarizing film, a transparent filler, and a retardation film on one side of a base film; The side surface defines a first area and a second area surrounding the first area; the linear polarizing film is located on the side surface of the base film and covers the second area; the transparent filling The body and the linear polarizing film are arranged in the same layer and cover the first area; the retardation film covers the linear polarizing film and the transparent filler on the side away from the base film.
  • the beneficial effects of this application are: in the polarizer provided by this application, one side of the base film defines a first area and a second area surrounding the first area; the linear polarizing film and the transparent filler are located on the same side of the base film On the surface, the linear polarizing film only covers the second area, and the transparent filler covers the first area; the retardation film covers the linear polarizing film and the transparent filler on the side away from the base film.
  • the linear polarizing film does not cover the first area, the position of the polarizer corresponding to the first area forms a depolarized area. Compared with the entire grooving process on the polarizer, this method has a simple structure and is easy to implement.
  • the transparent filler is used to fill the first area not covered by the linear polarizing film, the surface of the finally formed polarizer is flat.
  • the polarizer is attached to the cover plate in the later period, the need for optical glue is avoided. Carry out the problem of gap filling to improve the display quality and reduce the probability of dust accumulation.
  • FIG. 1 is a schematic structural diagram of an embodiment of a polarizer of this application
  • FIG. 2 is a schematic top view of an embodiment of the transparent filler and the linear polarizing film in FIG. 1;
  • FIG. 3 is a schematic structural view of an embodiment in which the transparent filler and the retardation film in the polarizer shown in FIG. 1 of the application are made of the same material;
  • FIG. 4 is a schematic flowchart of an embodiment of a method for preparing a polarizer according to the present application
  • FIG. 5 is a schematic flow chart of an embodiment of the method for preparing the polarizer shown in FIG. 3 of this application;
  • FIG. 6 is a schematic structural diagram of an embodiment of the electronic device of this application.
  • FIG. 1 is a schematic structural diagram of an embodiment of a polarizer of the present application
  • FIG. 2 is a schematic top view of an embodiment of a transparent filler and a linear polarizing film in FIG.
  • the polarizer includes a base film 10, a linear polarizing film 12, a transparent filler 14 and a retardation film 16.
  • one side surface of the base film 10 defines a first area AA and a second area BB surrounding the first area AA.
  • the shape of the first area AA may be a regular pattern, for example, a circle, an ellipse, a rectangle, etc.; of course, the shape of the first area AA may also be an irregular pattern.
  • the base film 10 may be a cellulose triacetate film TAC or the like. When it is located on the side of the linear polarizing film 12, the erosion of the linear polarizing film 12 by external water vapor can be reduced.
  • the linear polarizing film 12 is located on one side surface of the base film 10 and covers the second area BB but not the first area AA.
  • the linear polarizing film 12 forms an opening corresponding to the first area AA.
  • the transparent filler 14 is arranged in the same layer as the linear polarizing film 12 and covers the first area AA, that is, the transparent filler 14 fills the opening area formed by the linear polarizing film 12.
  • the transparent filler 14 does not have a linear deflection effect, and its height can be level with the height of the linear polarizing film 12, so that no breakage can be achieved.
  • the retardation film 16 covers the linear polarizing film 12 and the transparent filler 14 away from the base film 10.
  • the retardation film 16 may include a 1/4 wavelength retardation layer or a 1/2 wavelength retardation layer.
  • the linear polarizing film 12 does not cover the first area AA, the position of the polarizer corresponding to the first area AA forms a depolarized area. Compared with the entire grooving process on the polarizer, this method has a simple structure and is easy to implement.
  • the transparent filler 14 is used to fill the opening area of the linear polarizing film 12 (that is, the first area AA that is not covered by the linear polarizing film 12), the final polarizer surface can be made relatively flat and non-shaped. When the polarizer is attached to the cover plate, etc., the problem of gap filling such as the need for optical glue is avoided, the display quality is improved, and the probability of dust accumulation is reduced.
  • the surface of the first area AA is hydrophobic, and the surface of the second area BB is hydrophilic, so that the linear polarizing film 12 only covers the second area BB.
  • the linear polarizing film 12 is formed by coating the linearly polarized material, since the surface of the first area AA is hydrophobic, the linearly polarized material cannot cover the surface of the first area AA, and thus the linear polarizing film 12 cannot be formed on the surface of the first area AA. .
  • This design method makes the method of forming the linear polarizing film 12 with the open area relatively simple.
  • the transparent filler 14a and the retardation film 16a have the same material.
  • the linear polarizing film 12a is coated with a layer of retardation material on the side away from the base film 10a, and the retardation material extending into the opening area of the linear polarizing film 12a forms a transparent filler 14a, covering
  • the linear polarizing film 12a and the retardation material on the side of the transparent filler 14a away from the base film 10a form a retardation film, wherein the transparent filler 14a and the retardation film 16a can be formed in the same step.
  • This design method can make the method of forming the transparent filler 14a and the retardation film 16a simpler and more efficient.
  • the materials of the transparent filler 14a and the retardation film 16a may also be different. In this case, the two may be formed first.
  • the water drop angle on the surface of the first area AA/AA1 is 100°-120°, so that the transparent filler 14/14a is connected to the base film 10/10a of the first area AA/AA1.
  • the original hydrophobic surface of the first area AA/AA1 can be treated by corona, plasma, etc., so that the water droplet angle is 100°-120° (for example, 100°, 110° , 120°, etc.), thereby improving the surface adhesion of the first area AA/AA1, so that the subsequent transparent filler 14/14a can be connected to the base film 10/10a of the first area AA/AA1.
  • the surface of the first area AA/AA1 may also be surface treated with an adhesive, for example, silicone pressure-sensitive adhesive, epoxy resin, glass adhesive, etc.
  • an adhesive for example, silicone pressure-sensitive adhesive, epoxy resin, glass adhesive, etc.
  • the transparent filler 14/14a is connected to the base film 10/10a of the first area AA/AA1 through an adhesive.
  • the adhesive can also be used as the transparent filler 14/14a, and then a layer covering the transparent filler 14/14a is formed And the retardation film 16 of the linear polarizing film 12.
  • the above-mentioned polarizer may also include other structures, for example, an anti-interference layer located between the linear polarizing film 12 and the retardation film 16.
  • the transparent filler 14 may be made of the same material as the anti-interference layer.
  • the polarizer provided in this application will be further explained from the perspective of the preparation method.
  • the preparation method of the polarizer includes: forming a linear polarizing film 12, a transparent filler 14 and a retardation film 16 on one side of the base film 10; wherein, one side of the base film 10 is defined with The first area AA and the second area BB surrounding the first area AA; the linear polarizing film 12 is located on one side surface of the base film 10 and covers the second area BB; the transparent filler 14 and the linear polarizing film 12 are arranged in the same layer , And cover the first area AA; the retardation film 16 covers the linear polarizing film 12 and the transparent filler 14 away from the base film 10 side.
  • FIG. 4 is a schematic flow chart of an embodiment of the method for preparing a polarizer of this application.
  • the linear polarizing film 12 and transparent filling are formed on one side of the base film 10 as described above.
  • the body 14 and the retardation film 16 are specifically:
  • a transparent filler 14 is formed on one surface of the base film 10, and the transparent filler 14 only covers the first area AA.
  • a linear polarizing film 12 is formed on one side surface of the base film 10, and the linear polarizing film 12 covers the second area BB not covered by the transparent filler 14.
  • the preparation method provided by the present application further includes: One side surface of 10a is treated so that the surface of the first area AA1 of the base film 10a has hydrophobicity, and the surface of the second area BB1 has hydrophilicity.
  • the base film 10a is a cellulose triacetate film TAC
  • the original surface of the base film 10a is a hydrophobic interface
  • a barrier can be used to block the first area AA1 on the base film 10a, and then the base film 10a After the second area BB1 is subjected to lye saponification treatment, pure water cleaning treatment, and drying in sequence, the surface of the second area BB1 is a hydrophilic interface.
  • FIG. 5 is a schematic flowchart of another embodiment of the method for preparing a polarizer according to the present application.
  • the above-mentioned formation of the linear polarizing film 12a, the transparent filler 14a and the retardation film 16a on the side of the base film 10a specifically includes:
  • phase difference material Coating a phase difference material on one side of the base film 10a, the phase difference material covering the surface of the linear polarizing film 12a away from the base film 10a and the first area AA1; wherein the phase difference material covering the first area AA1 forms a transparent filler 14a, the phase difference material covering the linear polarizing film 12a and the surface of the transparent filler 14a away from the base film 10a forms the phase difference film 16a.
  • the surface of the first area AA1 may be processed before the above step S202, so that the water drop angle on the surface of the first area AA1 is 100°-120°, for example, corona or plasma treatment methods can be used.
  • a layer of adhesive may be coated on the surface of the first area AA1 before step S202.
  • FIG. 6 is a schematic structural diagram of an embodiment of an electronic device of this application.
  • the electronic device includes a display layer 20, a retardation film 22, a linear polarizing film 24, a transparent filler 26, and an optical device 28.
  • the display layer 20 may include a laminated substrate, a thin film transistor layer, a light emitting layer, a touch control layer, and the like.
  • the retardation film 22 is located on the side of the display layer 20, for example, the retardation film 22 may be located on the side of the touch layer; the retardation film 22 may include a 1/4 wavelength retardation layer and a 1/2 wavelength retardation layer at least One kind.
  • the linear polarizing film 24 is located on the side of the retardation film 22 away from the display layer 20, and the linear polarizing film 24 is provided with an opening (not labeled), and the transparent filler 26 is located in the opening.
  • the optical device 28 may be a camera, an under-screen fingerprint sensor, a distance sensor, etc.
  • the optical device 28 is located on the side of the display layer 20 opposite to the retardation film 22, and the photosensitive area of the optical device 28 corresponds to the opening position.
  • the electronic device may further include a cover plate 21 located on the side of the linear polarizing film 24 away from the display layer 20.
  • the electronic device may further include a base film located between the linear polarizing film 24 and the cover 21.
  • the linear polarizing film 24 is provided with an opening, and the opening is filled with a transparent filler 26 that does not have a linear polarization function, a depolarizing area is formed corresponding to the position of the opening of the linear polarizing film 24. Compared with the entire grooving process on the polarizer, this method has a simple structure and is easy to implement.
  • the transparent filler 26 is used to fill the opening area of the linear polarizing film 24, the surface of the finally formed polarizer is flat and non-shaped. Later, when the polarizer is attached to the cover plate 21, the need for optical glue is avoided. Carry out the gap filling problem to improve the display quality and reduce the probability of dust accumulation.
  • the retardation film 22, the linear polarizing film 24, and the transparent filler 26 can be directly formed on the display layer 20 by coating.
  • the phase difference film 22 can be formed on the display layer 20 first; then the transparent filler 26 is formed on the area corresponding to the photosensitive area of the phase difference film 22 and the optical device 28; then the linearly polarized light is formed in the surrounding area of the transparent filler 26 ⁇ 24.
  • the above-mentioned transparent filler 26 may be highly flush with the linear polarizing film 24.
  • a polarizer including a retardation film 22, a linear polarizing film 24, and a transparent filler 26 may be formed first.
  • the polarizer may be formed in the manner shown in FIG. 4 or FIG. 5, and the polarizer formed at this time
  • the base film in the above-mentioned embodiment may be included in the above-mentioned embodiment; and then the polarizer is attached to the display layer 20 by means of lamination.

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Abstract

一种偏光片、电子设备及偏光片的制备方法，偏光片包括：基膜（10），其一侧表面定义有第一区域（AA）以及围绕在第一区域（AA）周围的第二区域（BB）；线偏光膜（12），位于基膜（10）的一侧表面，且覆盖第二区域（BB）；透明填充体（14），与线偏光膜（12）同层设置，且覆盖第一区域（AA）；相位差膜（16），覆盖线偏光膜（12）和透明填充体（14）远离基膜（10）一侧。通过这种方式，能够较为简单的形成去偏光区域。

Description

偏光片、电子设备及偏光片的制备方法 技术领域
本申请涉及电子设备技术领域，特别是涉及一种偏光片、电子设备及偏光片的制备方法。
背景技术
目前，电子设备(例如，手机、平板、电视等)对于屏幕边框的利用率要求越来越高；为实现全面屏效果，屏体摄像头概念应运而生。
而为了降低电子设备中的金属层对外界环境光的反射，一般需要在屏体上设置偏光片，以降低金属层对外界环境光的反射，提高电子设备在强光下的对比度。
但是偏光片会造成屏体一侧设置的摄像头的透过率低，因此通常需要将对应于摄像头位置处的偏光片进行挖槽处理，以形成去偏光区域。
本申请的发明人在长期研究过程中发现，上述形成去偏光区域的做法较为繁琐；且后期偏光片与盖板等进行贴合时，光学胶OCA无法完全填充偏光片内挖槽形成的断差，进而会产生光学上的问题，以及可能会导致灰尘在此凹陷区域积累。
发明内容
本申请提供一种偏光片、电子设备及偏光片的制备方法，能够较为简单的形成去偏光区域。
本申请采用的一个技术方案是：提供一种偏光片，包括：基膜，其一侧表面定义有第一区域以及围绕在所述第一区域周围的第二区域；线偏光膜，位于所述基膜的所述一侧表面，且覆盖所述第二区域；透明填充体，与所述线偏光膜同层设置，且覆盖所述第一区域；相位差膜，覆盖所述线偏光膜和所述透明填充体远离所述基膜的一侧。
本申请采用的又一个技术方案是：提供一种电子设备，包括：显示层；相位差膜，位于所述显示层一侧；线偏光膜，位于所述相位差膜远离所述显示层一侧，且所述线偏光膜设置有开口；透明填充体，位于所述开口内；光学器件，位于所述显示层背对所述相位差膜一侧，且所述光学器件的感光区与所述开口位置对应。
本申请采用的又一个技术方案是：提供一种偏光片的制备方法，所述制备方法包括：在基膜一侧形成线偏光膜、透明填充体以及相位差膜；其中，所述基膜一侧表面定义有第一区域以及围绕在所述第一区域周围的第二区域；所述线偏光膜位于所述基膜的所述一侧表面，且覆盖所述第二区域；所述透明填充体与所述线偏光膜同层设置，且覆盖所述第一区域；所述相位差膜覆盖所述线偏光膜和所述透明填充体远离所述基膜一侧。
本申请的有益效果是：本申请所提供的偏光片中基膜一侧表面定义有第一区域以及围绕在第一区域周围的第二区域；线偏光膜和透明填充体位于基膜的同一侧表面，且线偏光膜仅覆盖第二区域，透明填充体覆盖第一区域；相位差膜覆盖线偏光膜和透明填充体远离基膜一侧。一方面，由于线偏光膜不覆盖第一区域，因此偏光片对应于第一区域的位置形成去偏光区域。与对偏光片进行整个挖槽处理相比，该方式结构简单，且工艺易于实现。另一方面，由于采用透明填充体填充未被线偏光膜覆盖的第一区域，因此使得最终形成的偏光片表面平整，后期当该偏光片与盖板等贴合时，避免了需要光学胶等进行断差填充的问题，进而提升显示品质，降低灰尘堆积的概率。
【附图说明】
图1为本申请偏光片一实施方式的结构示意图；
图2为图1中透明填充体和线偏光膜一实施方式的俯视示意图；
图3为本申请图1所示的偏光片中透明填充体以及相位差膜为同一材料的一实施方式的结构示意图；
图4为本申请偏光片的制备方法一实施方式的流程示意图；
图5为本申请图3所示偏光片的制备方法实施方式的流程示意图；
图6为本申请电子设备一实施方式的结构示意图。
【具体实施方式】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，均属于本申请保护的范围。
请参阅图1-图2，图1为本申请偏光片一实施方式的结构示意图，图2为图 1中透明填充体和线偏光膜一实施方式的俯视示意图。该偏光片包括基膜10、线偏光膜12、透明填充体14和相位差膜16。
具体地，基膜10一侧表面定义有第一区域AA以及围绕在第一区域AA周围的第二区域BB。第一区域AA的形状可以为规则图形，例如，圆形、椭圆形、矩形等；当然，第一区域AA的形状也可为非规则图形。基膜10可以为三醋酸纤维膜TAC等，当其位于线偏光膜12一侧时，可以降低外部水汽对线偏光膜12的侵蚀。线偏光膜12位于基膜10的一侧表面，且覆盖第二区域BB，但未覆盖第一区域AA，此时线偏光膜12对应第一区域AA的位置形成开口。透明填充体14与线偏光膜12同层设置，且覆盖第一区域AA，即透明填充体14填充线偏光膜12形成的开口区域。在本实施例中，透明填充体14不具有线偏效果，且其高度可与线偏光膜12高度齐平，从而可以实现无断差。相位差膜16覆盖线偏光膜12和透明填充体14远离基膜10一侧，相位差膜16可以包括1/4波长相位差层，还可以包括1/2波长相位差层。
一方面，由于线偏光膜12不覆盖第一区域AA，因此偏光片对应于第一区域AA的位置形成去偏光区域。与对偏光片进行整个挖槽处理相比，该方式结构简单，且工艺易于实现。另一方面，由于采用透明填充体14填充线偏光膜12的开口区域(即未被线偏光膜12覆盖的第一区域AA)，因此可以使得最终形成的偏光片表面较为平整非异形，后期当该偏光片与盖板等贴合时，避免了需要光学胶等进行断差填充的问题，提升了显示品质，降低灰尘堆积的概率。
可选地，上述第一区域AA表面具有疏水性，第二区域BB表面具有亲水性，以使得线偏光膜12仅覆盖第二区域BB。当采用涂布线偏材料的方式形成线偏光膜12时，由于第一区域AA表面具有疏水性，线偏材料无法覆盖第一区域AA表面，进而无法在第一区域AA表面形成线偏光膜12。该设计方式使得形成具有开口区域的线偏光膜12的方式较为简单。
如图3所示，透明填充体14a和相位差膜16a材料相同。例如，可以在上述实施方式的基础上，在线偏光膜12a远离基膜10a一侧涂覆一层相位差材料，延伸入线偏光膜12a的开口区域内的相位差材料形成透明填充体14a，覆盖线偏光膜12a和透明填充体14a远离基膜10a一侧的相位差材料形成相位差膜，其中，透明填充体14a和相位差膜16a可以在同一步骤中形成。该设计方式可以使得形成透明填充体14a和相位差膜16a的方式较为简单，且效率较高。当然，在其他实施方式中，透明填充体14a和相位差膜16a的材料也可不同，此时，两者可先 后形成。
请再次参阅图1或图3，第一区域AA/AA1表面的水滴角为100°-120°，以使得透明填充体14/14a与第一区域AA/AA1的基膜10/10a连接。在本实施例中，可以利用电晕、等离子等处理方式对第一区域AA/AA1的原本的疏水性表面进行处理，以使得其水滴角为100°-120°(例如，100°、110°、120°等)，从而改善第一区域AA/AA1的表面接着力，使得后续透明填充体14/14a能够与第一区域AA/AA1的基膜10/10a连接。
可选地，为改善第一区域AA/AA1的表面接着力，第一区域AA/AA1表面也可使用接着剂进行表面处理，例如，有机硅压敏胶、环氧树脂胶、玻璃胶等，透明填充体14/14a通过接着剂与第一区域AA/AA1的基膜10/10a连接，当然，也可以使用接着剂作为透明填充体14/14a，再形成一层覆盖透明填充体14/14a和线偏光膜12的相位差膜16。
上述偏光片也可以包括其他结构，例如，抗干扰层，位于线偏光膜12与相位差膜16之间，此时透明填充体14可以与抗干扰层的材质相同。
下面从制备方法的角度对本申请所提供的偏光片作进一步说明。
请结合图1，本申请所提供的偏光片的制备方法包括：在基膜10一侧形成线偏光膜12、透明填充体14以及相位差膜16；其中，基膜10的一侧表面定义有第一区域AA以及围绕在第一区域AA周围的第二区域BB；线偏光膜12位于基膜10的一侧表面，且覆盖第二区域BB；透明填充体14与线偏光膜12同层设置，且覆盖第一区域AA；相位差膜16覆盖线偏光膜12和透明填充体14远离基膜10一侧。
当偏光片的结构如图1中所示时，请参阅图4，图4为本申请偏光片的制备方法一实施方式的流程示意图，上述在基膜10一侧形成线偏光膜12、透明填充体14以及相位差膜16具体为：
S101：在基膜10的一侧表面形成透明填充体14，且透明填充体14仅覆盖第一区域AA。
S102：在基膜10的一侧表面形成线偏光膜12，且线偏光膜12覆盖未被透明填充体14覆盖的第二区域BB。
S103：在透明填充体14和线偏光膜12远离基膜10一侧形成相位差膜16。
当偏光片的结构如图3中所示时，上述在基膜10a一侧形成线偏光膜12a、透明填充体14a以及相位差膜16a之前，本申请所提供的制备方法还包括：对基 膜10a的一侧表面进行处理，以使得基膜10a的第一区域AA1的表面具有疏水性，第二区域BB1的表面具有亲水性。例如，当基膜10a为三醋酸纤维素膜TAC时，基膜10a原本表面为疏水性界面，可以利用一阻挡件将基膜10a上的第一区域AA1进行遮挡，然后对基膜10a上的第二区域BB1依次进行碱液皂化处理、纯水清洗处理、烘干后，使得第二区域BB1表面为亲水性界面。
进一步，请参阅图5，图5为本申请偏光片的制备方法另一实施方式的流程示意图。上述在基膜10a一侧形成线偏光膜12a、透明填充体14a以及相位差膜16a具体包括：
S201：在基膜10a的一侧表面涂布线偏材料，线偏材料仅附着于第二区域BB1的表面以形成线偏光膜12a。
S202：在基膜10a一侧涂布相位差材料，相位差材料覆盖线偏光膜12a远离基膜10a一侧表面以及第一区域AA1；其中，覆盖第一区域AA1的相位差材料形成透明填充体14a，覆盖线偏光膜12a和透明填充体14a远离基膜10a一侧表面的相位差材料形成相位差膜16a。
此外，在本实施例中，为了增加透明填充体14a与第一区域AA1表面的结合力，可在上述步骤S202之前对第一区域AA1表面进行处理，以使得第一区域AA1表面的水滴角为100°-120°，例如，可以利用电晕或等离子等处理方式。或者，也可在上述步骤S202之前在第一区域AA1表面涂覆一层接着剂。
请参阅图6，图6为本申请电子设备一实施方式的结构示意图，该电子设备包括显示层20、相位差膜22、线偏光膜24、透明填充体26、光学器件28。
具体地，显示层20可以包括层叠设置的衬底、薄膜晶体管层、发光层、触控层等。相位差膜22位于显示层20一侧，例如，该相位差膜22可以位于触控层一侧；该相位差膜22可以包括1/4波长相位差层、1/2波长相位差层中至少一种。线偏光膜24位于相位差膜22远离显示层20一侧，且线偏光膜24设置有开口(未标示)，透明填充体26位于开口内。光学器件28可以是摄像头、屏下指纹传感器、距离传感器等，光学器件28位于显示层20背对相位差膜22一侧，光学器件28的感光区与开口位置对应。当然，在其他实施方式中，该电子设备还可以包括盖板21，位于线偏光膜24远离显示层20一侧。或者，该电子设备还可以进一步包括基膜，位于线偏光膜24与盖板21之间。
一方面，由于线偏光膜24设置有开口，开口内填充的为不具有线偏功能的透明填充体26，因此对应于线偏光膜24的开口的位置形成去偏光区域。与对偏 光片进行整个挖槽处理相比，该方式结构简单，且工艺易于实现。另一方面，由于采用透明填充体26填充线偏光膜24的开口区域，因此使得最终形成的偏光片表面平整非异形，后期当该偏光片与盖板21等贴合时，避免了需要光学胶进行断差填充问题，进而提升显示品质，降低灰尘堆积的概率。
此外，在本实施例中，上述相位差膜22、线偏光膜24、透明填充体26可直接采用涂布的方式在显示层20上形成。例如，可以先在显示层20上形成相位差膜22；然后在相位差膜22与光学器件28的感光区对应的区域上形成透明填充体26；接着在透明填充体26的周围区域形成线偏光膜24。此外，上述透明填充体26可以与线偏光膜24高度齐平。
可选地，也可先形成包含相位差膜22、线偏光膜24、透明填充体26的偏光片，例如，可以利用图4或图5中的方式形成偏光片，此时所形成的偏光片中可以包含上述实施例中的基膜；然后采用贴合的方式将该偏光片贴合到显示层20上。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (14)

  1. 一种偏光片，包括：
    基膜，其一侧表面定义有第一区域以及围绕在所述第一区域周围的第二区域；
    线偏光膜，位于所述基膜的所述一侧表面，且覆盖所述第二区域；
    透明填充体，与所述线偏光膜同层设置，且覆盖所述第一区域；
    相位差膜，覆盖所述线偏光膜和所述透明填充体远离所述基膜的一侧。
  2. 根据权利要求1所述的偏光片，其中，
    所述第一区域的所述基膜表面具有疏水性，所述第二区域的所述基膜表面具有亲水性，以使得所述线偏光膜仅覆盖所述第二区域。
  3. 根据权利要求1所述的偏光片，其中，
    所述透明填充体和所述相位差膜材料相同。
  4. 根据权利要求1所述的偏光片，其中，
    所述第一区域表面的水滴角为100°-120°，以使得所述透明填充体与所述第一区域的所述基膜连接。
  5. 根据权利要求1所述的偏光片，其中，
    所述第一区域的所述基膜表面设置有接着剂，所述透明填充体通过所述接着剂与所述第一区域的所述基膜连接。
  6. 根据权利要求1所述的偏光片，其中，所述偏光片还包括：
    抗干扰层，位于所述线偏光膜与所述相位差膜之间，且所述透明填充体与所述抗干扰层的材质相同。
  7. 一种电子设备，包括：
    显示层；
    相位差膜，位于所述显示层一侧；
    线偏光膜，位于所述相位差膜远离所述显示层一侧，且所述线偏光膜设置有开口；
    透明填充体，位于所述开口内；
    光学器件，位于所述显示层背对所述相位差膜一侧，且所述光学器件的感光区与所述开口位置对应。
  8. 根据权利要求7所述的电子设备，其中，
    所述透明填充体与所述线偏光膜高度齐平。
  9. 一种偏光片的制备方法，包括：
    在基膜一侧形成线偏光膜、透明填充体以及相位差膜；
    其中，所述基膜一侧表面定义有第一区域以及围绕在所述第一区域周围的第二区域；所述线偏光膜位于所述基膜的所述一侧表面，且覆盖所述第二区域；所述透明填充体与所述线偏光膜同层设置，且覆盖所述第一区域；所述相位差膜覆盖所述线偏光膜和所述透明填充体远离所述基膜一侧。
  10. 根据权利要求9所述的制备方法，其中，所述在所述基膜一侧形成线偏光膜、透明填充体以及相位差膜之前，所述制备方法还包括：
    对所述基膜的所述一侧表面进行处理，以使得所述基膜的所述第一区域的表面具有疏水性，所述第二区域的表面具有亲水性。
  11. 根据权利要求10所述的制备方法，其中，所述基膜为三醋酸纤维素膜，所述基膜表面具有疏水性，所述对所述基膜的所述一侧表面进行处理，以使得所述基膜的所述第一区域的表面具有疏水性，所述第二区域的表面具有亲水性，包括：
    利用阻挡件将所述基膜的所述第一区域进行遮挡；
    对所述基膜的所述第二区域依次进行碱液皂化处理、纯水清洗处理和烘干后，使得所述第二区域的表面具有亲水性。
  12. 根据权利要求10所述的制备方法，其中，所述在基膜一侧形成线偏光膜、透明填充体以及相位差膜，包括：
    在所述基膜的所述一侧表面涂布线偏材料，所述线偏材料仅附着于所述第二区域的表面以形成所述线偏光膜；
    在所述基膜一侧涂布相位差材料，所述相位差材料覆盖所述线偏光膜远离所述基膜一侧表面以及所述第一区域；其中，覆盖所述第一区域的所述相位差材料形成所述透明填充体，覆盖所述线偏光膜和所述透明填充体远离所述基膜一侧表面的所述相位差材料形成所述相位差膜。
  13. 根据权利要求12所述的制备方法，其中，所述在所述基膜一侧涂布相位差材料之前，所述制备方法还包括：
    对所述第一区域的所述基膜表面进行处理，以使得所述第一区域的所述基膜表面的水滴角为100°-120°；或，在所述第一区域表面涂覆一层接着剂。
  14. 根据权利要求9所述的制备方法，其中，所述在基膜一侧形成线偏光膜、透明填充体以及相位差膜，包括：
    在所述基膜的一侧表面形成所述透明填充体，且所述透明填充体仅覆盖所述第一区域；
    在所述基膜的一侧表面形成所述线偏光膜，且所述线偏光膜覆盖未被所述透明填充体覆盖的所述第二区域；
    在所述透明填充体和所述线偏光膜远离所述基膜一侧形成所述相位差膜。
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