WO2020107769A1 - 偏光片保护膜及其撕揭方法 - Google Patents

偏光片保护膜及其撕揭方法 Download PDF

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Publication number
WO2020107769A1
WO2020107769A1 PCT/CN2019/082135 CN2019082135W WO2020107769A1 WO 2020107769 A1 WO2020107769 A1 WO 2020107769A1 CN 2019082135 W CN2019082135 W CN 2019082135W WO 2020107769 A1 WO2020107769 A1 WO 2020107769A1
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WIPO (PCT)
Prior art keywords
protective film
polarizer protective
polarizer
extension
tearing
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Application number
PCT/CN2019/082135
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English (en)
French (fr)
Inventor
余朋飞
宋涛
李少坤
Original Assignee
武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/479,599 priority Critical patent/US20210333439A1/en
Publication of WO2020107769A1 publication Critical patent/WO2020107769A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
    • B32B43/006—Delaminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • G02B5/3025—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties

Definitions

  • the invention relates to the field of polarizers, in particular to a polarizer protective film and a tearing method.
  • the polarizer protective film has at least one corner, and the extension portion is connected to one of the corners.
  • the polarizer protective film has a long side and a short side, the intersection of the long side and the short side forms the corner, and the extension is located on the short side.
  • the length of the extension part protruding from the polarizer body is 3 mm-5 mm.
  • the thickness of the protective film is 10um-70um.
  • extension part is a bar shape or a semicircular shape.
  • the invention also provides a method for tearing the polarizer protective film, including the following steps: providing a tearing device and a stage; placing the polarizer body with the polarizer protective film on the stage, wherein The polarizer protective film is located above the polarizer body, the polarizer protective film is provided with an extension portion, the extension portion protrudes from the polarizer body; the polarizer protection film and the extension portion Adhering to the peeling device; peeling off the polarizer protective film from the extending part until the polarizer protective film is completely peeled off from the polarizer body.
  • the tearing device includes a directional wheel, a moving wheel and adhesive tape.
  • the moving wheel can be moved up and down; the tape passes through the moving wheel and the directional wheel, the tape is located above the polarizer protective film; the tape has an adhesive surface facing the polarizer Protective film; before tearing the polarizer protective film, the adhesive surface of the tape adheres to the polarizer protective film; when tearing the polarizer protective film, the moving wheel rises to drive the The adhesive tape starts to move away from the polarizer protective film from the extending portion to completely tear the polarizer protective film from the polarizer body.
  • the polarizer protective film has at least one corner, and the extending portion is connected to one of the corners.
  • the moving wheel rises and drives the adhesive tape from having The corners of the extending portion move away from the polarizer protective film to completely tear the polarizer protective film off the polarizer body.
  • the width of the tape is the same as the width of the extension.
  • the technical effect of the present invention lies in that the polarizer protective film and the tearing method of the present invention are provided with an extension part on the polarizer protective film, the extension part protruding from the polarizer body, so that when the polarizer protective film is torn off, there is a Very good stress point, to achieve the effect of removing the protective film of the polarizer at one time, at the same time, without damaging the polarizer body, thereby improving the quality of the product.
  • FIG. 1 is a schematic structural view of a polarizer protective film provided by an embodiment of the present invention.
  • FIG. 2 is a flowchart of steps of a method for peeling off a polarizer protective film according to an embodiment of the invention
  • FIG. 3 is a motion state diagram 1 of the tearing device of the embodiment of the present invention, which mainly embodies the moving direction of the moving wheel, and the moving direction is shown by the arrow in the figure;
  • FIG. 4 is a motion diagram 2 of the tearing device according to an embodiment of the present invention, which mainly embodies the moving direction of the moving wheel, and the moving direction is indicated by the arrow in the figure.
  • this embodiment provides a polarizer protective film 1.
  • the polarizer protective film 1 is adhered to the surface of the polarizer body 2.
  • the polarizer protective film 1 is provided with an extension portion 11 that protrudes from the polarizer body 2 In this way, when the polarizer protective film is torn off, there is a good stress point to achieve the effect of removing the polarizer protective film at one time.
  • the polarizer protective film 1 has at least one corner 12, and the extension 11 is connected to one of the corners 12.
  • the polarizer protective film 1 has a long side 13 and a short side 14.
  • a corner 12 is formed at the intersection of the long side 13 and the short side 14 to extend
  • the part 11 is on the short side 14.
  • the length of the extension 11 protruding from the polarizer body 2 is 3 mm-5 mm, and the thickness is 10 um-70 um.
  • the extension 11 is strip-shaped or semi-circular, but it is not limited thereto.
  • the polarizer protective film 1 may be a silicone protective film, a PU (polyurethane) protective film or an acrylic protective film, or a protective film of other materials, which is not specifically limited in this embodiment.
  • the structure of the polarizer protective film 1 is also shown in FIG. 1.
  • This embodiment also provides a method for tearing the polarizer protective film, which includes steps S1) to S4).
  • the peeling device 3 includes a directional wheel 31, a moving wheel 32 and an adhesive tape 33.
  • the moving wheel 32 can move up and down; the adhesive tape 33 passes through the moving wheel 32 and the directional wheel 31.
  • the tearing device 3 provided in this embodiment is an existing device for tearing the polarizer protective film 1. Therefore, for other components of the tearing device 3, such as providing a power mechanism for moving the moving wheel 32 up and down, etc. Repeat them one by one.
  • the polarizer main body 2 with the polarizer protective film 1 adhered thereto is placed on the stage 4, wherein the polarizer protective film 1 is located above the polarizer main body 2, and the polarizer protective film 1 is provided with an extension portion 11, the extension portion 11 protrudes from the polarizer body 2; the adhesive tape 33 is located above the polarizer protective film 1, and the adhesive tape 33 has an adhesive surface facing the polarizer protective film 1.
  • the polarizer protective film 1 has at least one corner 12, and the extension 11 is connected to one of the corners 12.
  • the moving wheel 32 ascends and drives the tape 33 away from the corner with the extension 11
  • the direction of the polarizer protective film 1 is moved to completely tear off the polarizer protective film 1 from the polarizer body 2.
  • the width of the adhesive tape 33 is the same as that of the extension portion 11.
  • the width of the adhesive tape 33 is the same as the width of the extension portion 11.
  • the polarizer protective film 1 is torn off from the extending portion 11 until the polarizer protective film 1 is completely torn off from the polarizer body 2.
  • the polarizer protective film 1 has a long side 13 and a short side 14, a corner 12 is formed at the intersection of the long side 13 and the short side 14, and the extended portion 11 is on the short side 14. Therefore, as shown in FIG. 4, when the polarizer protective film 1 is torn off, the moving wheel 32 ascends and drives the tape 33 from the corner with the extension 11 to move away from the polarizer protective film 1 to polarize the polarized light
  • the film protection film 1 is completely torn off from the polarizer body 2.
  • the moving wheel 32 is lowered to the original designated position, and the next piece of polarizer protective film 1 is torn off.
  • An extension 11 is provided on the polarizer protective film 1 so that when the machine tears off the lower polarizer protective film 1, there is a good stress point to achieve the effect of removing the lower polarizer protective film 1 at one time.
  • the body of the polarizer is not damaged, thereby improving the quality of the product.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)

Abstract

一种偏光片保护膜（1）及其撕揭方法，偏光片保护膜（1）黏覆于偏光片本体（2）的表面，偏光片保护膜（1）设有延伸部（11），突出于所述偏光片本体（2）。通过在偏光片保护膜（2）设置延伸部（11），使得在撕下偏光片保护膜（1）时，有一个很好的受力点，达到一次性撕除下偏光片保护膜（1）的效果。

Description

偏光片保护膜及其撕揭方法 技术领域
本发明涉及偏光片领域，尤其涉及一种偏光片保护膜及其撕揭方法。
 背景技术
偏光片带有保护膜，现有的设计，偏光片和保护膜外形一样大小，导致在生产过程中需要把保护膜撕掉时，必须额外贴一张带粘性的易撕贴在保护膜表面，利用易撕贴的粘性将保护膜带起，从而撕掉保护膜。但是在这个过程中，往往因为下偏光片材质跟粘度关系，或者粘合面积不够，拉起易撕贴角度不对等问题，导致组装机台在撕除下偏光片保护膜时，机台撕膜机构无法一次完成撕除，极大的影响到产能。
 技术问题
为了解决上述技术问题，本发明提供一种偏光片保护膜及其撕揭方法以解决现有技术中存在的撕膜难、影响产能的问题。
 技术解决方案
解决上述问题的技术方案是：提供一种偏光片保护膜，黏覆于偏光片本体的表面，所述偏光片保护膜设有延伸部，突出于所述偏光片本体。
进一步地，所述偏光片保护膜具有至少一边角，所述延伸部连接于其中一所述边角。
进一步地，所述偏光片保护膜具有长边和短边，所述长边和所述短边相交处形成所述边角，所述延伸部位于所述短边上。
进一步地，所述延伸部突出于所述偏光片本体的长度为3mm-5mm。
进一步地，所述保护膜的厚度为10um-70um。
进一步地，所述延伸部为条形或者半圆形。
本发明还提供一种偏光片保护膜的撕揭方法，包括以下步骤：提供一撕揭装置以及一载台；将黏覆有偏光片保护膜的偏光片本体置于所述载台上，其中所述偏光片保护膜位于所述偏光片本体的上方，所述偏光片保护膜设有延伸部，所述延伸部突出于所述偏光片本体；将所述偏光片保护膜以及所述延伸部粘附于所述撕揭装置上；从所述延伸部开始撕揭所述偏光片保护膜，直至所述偏光片保护膜从所述偏光片本体上完全撕揭下来。
进一步地，所述撕揭装置包括定向轮、移动轮及胶带。所述移动轮可升降移动；所述胶带穿过所述移动轮和所述定向轮，所述胶带位于所述偏光片保护膜的上方；所述胶带具有一粘附面，朝向所述偏光片保护膜；在撕揭所述偏光片保护膜之前，所述胶带的粘附面粘附于所述偏光片保护膜；在撕揭所述偏光片保护膜时，所述移动轮上升带动所述胶带从所述延伸部开始向远离所述偏光片保护膜的方向移动，以将所述偏光片保护膜从所述偏光片本体上完全撕揭下来。
进一步地，所述偏光片保护膜具有至少一边角，所述延伸部连接于其中一所述边角，在撕揭所述偏光片保护膜时，所述移动轮上升带动所述胶带从具有所述延伸部的边角向远离所述偏光片保护膜的方向移动，以将所述偏光片保护膜从所述偏光片本体上完全撕揭下来。
进一步地，所述胶带的宽度与所述延伸部的宽度相同。
 有益效果
本发明的技术效果在于，本发明的偏光片保护膜及其撕揭方法，在偏光片保护膜设置延伸部，该延伸部突出于偏光片本体，使得在撕下偏光片保护膜时，有一个很好的受力点，达到一次性撕除下偏光片保护膜的效果，同时，又不损伤偏光片本体，进而提高产品的品质。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供偏光片保护膜的结构示意图；
图2是本发明实施例提供偏光片保护膜撕揭方法的步骤流程图；
图3是本发明实施例的撕揭装置的运动状态图一，主要体现移动轮的移动的方向，移动方向为图中箭头所示；
图4是本发明实施例的撕揭装置的运动状态图二，主要体现移动轮的移动的方向，移动方向为图中箭头所示。
附图部件标识如下：
1偏光片保护膜；                     2偏光片本体；
3撕揭装置；                         4载台；
11延伸部；                          12边角；
13长边；                            14短边；
31定向轮；                          32移动轮；
33胶带；                            331粘附面。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本专利文档中，下文论述的附图以及用来描述本发明公开的原理的各实施例仅用于说明，而不应解释为限制本发明公开的范围。所属领域的技术人员将理解，本发明的原理可在任何适当布置的系统中实施。将详细说明示例性实施方式，在附图中示出了这些实施方式的实例。此外，将参考附图详细描述根据示例性实施例的终端。附图中的相同附图标号指代相同的元件。
如图1所示，本实施例提供一种偏光片保护膜1，偏光片保护膜1黏覆于偏光片本体2的表面，偏光片保护膜1设有延伸部11，突出于偏光片本体2，这样在撕下偏光片保护膜时，有一个很好的受力点，达到一次性撕除下偏光片保护膜的效果。
偏光片保护膜1具有至少一边角12，延伸部11连接于其中一边角12，偏光片保护膜1具有长边13和短边14，长边13和短边14相交处形成边角12，延伸部位11于短边14上。延伸部11突出于偏光片本体2的长度为3mm-5mm，厚度为10um-70um，延伸部11为条形或者半圆形，但不局限于此。
偏光片保护膜1可以为硅胶保护膜或PU(聚氨酯)保护膜或亚克力保护膜，还可以为其他材质的保护膜，对此本实施例不作具体限制。
如图2所示，偏光片保护膜1的结构同时参见图1所示，本实施例还提供了一种偏光片保护膜的撕揭方法，包括步骤S1）- 步骤S4）。
S1）提供一撕揭装置3以及一载台4，参见图3和图4。撕揭装置3包括定向轮31、移动轮32及胶带33。移动轮32可升降移动；胶带33穿过移动轮32和定向轮31。本实施例所提供的撕揭装置3为现有的用以撕揭偏光片保护膜1的装置，因此，对于撕揭装置3的其他部件，如提供移动轮32上下移动的动力机构等不再一一赘述。
S2）将黏覆有偏光片保护膜1的偏光片本体2置于载台4上，其中偏光片保护膜1位于偏光片本体2的上方，偏光片保护膜1设有延伸部11，延伸部11突出于偏光片本体2；胶带33位于偏光片保护膜1的上方，胶带33具有一粘附面，朝向偏光片保护膜1。
S3）将偏光片保护膜1以及延伸部11粘附于撕揭装置3上；即在撕揭所述偏光片保护膜1之前，如图3所示，移动轮31带动胶带33移动到指定位置，所述指定位置即能够使偏光片保护膜1以及延伸部11能够粘附于胶带33的粘附面的位置。
偏光片保护膜1具有至少一边角12，延伸部11连接于其中一边角12，在撕揭所述偏光片保护膜1时，移动轮32上升带动胶带33从具有延伸部11的边角向远离偏光片保护膜1的方向移动，以将偏光片保护膜1从偏光片本体2上完全撕揭下来。胶带33的宽度与延伸部11上，其中胶带33的宽度与延伸部11的宽度相同，在延伸部11贴附于上述胶带33上时，尽可能的将胶带33与延伸部11对准。
S4）从延伸部11开始撕揭偏光片保护膜1，直至偏光片保护膜1从偏光片本体2上完全撕揭下来。参见图1所示，本实施例中，由于偏光片保护膜1具有长边13和短边14，长边13和短边14相交处形成边角12，延伸部位11于短边14上。因此，如图4所示，在撕揭所述偏光片保护膜1时，移动轮32上升带动胶带33从具有延伸部11的边角处向远离偏光片保护膜1的方向移动，以将偏光片保护膜1从偏光片本体2上完全撕揭下来。
当前的偏光片保护膜1被撕揭下后，所述移动轮32下降至原先的所述指定位置，进入下一片偏光片保护膜1的撕揭。
在偏光片保护膜1设置延伸部11，使得机台撕除下偏光片保护膜1时，有一个很好的受力点，达到一次性撕除下偏光片保护膜1的效果，同时，又不损伤偏光片本体，进而提高产品的品质。
以上对本发明实施例所提供的偏光片保护膜及其撕揭方法进行了详细介绍。应理解，本文所述的示例性实施方式应仅被认为是描述性的，用于帮助理解本发明的方法及其核心思想，而并不用于限制本发明。在每个示例性实施方式中对特征或方面的描述通常应被视作适用于其他示例性实施例中的类似特征或方面。尽管参考示例性实施例描述了本发明，但可建议所属领域的技术人员进行各种变化和更改。本发明意图涵盖所附权利要求书的范围内的这些变化和更改。

Claims (10)

  1. 一种偏光片保护膜，黏覆于偏光片本体的表面，其中，所述偏光片保护膜设有延伸部，突出于所述偏光片本体。
  2. 如权利要求1所述的偏光片保护膜，其中，所述偏光片保护膜具有至少一边角，所述延伸部连接于其中一所述边角。
  3. 根据权利要求2所述的偏光片保护膜，其中，所述偏光片保护膜具有长边和短边，所述长边和所述短边相交处形成所述边角，所述延伸部位于所述短边上。
  4. 根据权利要求1所述的偏光片保护膜，其中，所述延伸部突出于所述偏光片本体的长度为3mm-5mm。
  5. 根据权利要求1所述的偏光片保护膜，其中，所述保护膜的厚度为10um-70um。
  6. 根据权利要求1所述的偏光片保护膜，其中，所述延伸部为条形或者半圆形。
  7. 一种偏光片保护膜的撕揭方法，其中，包括以下步骤：
    提供一撕揭装置以及一载台；
    将黏覆有偏光片保护膜的偏光片本体置于所述载台上，其中所述偏光片保护膜位于所述偏光片本体的上方，所述偏光片保护膜设有延伸部，所述延伸部突出于所述偏光片本体；
    将所述偏光片保护膜以及所述延伸部粘附于所述撕揭装置上；
    从所述延伸部开始撕揭所述偏光片保护膜，直至所述偏光片保护膜从所述偏光片本体上完全撕揭下来。
  8. 根据权利要求7所述的偏光片保护膜的撕揭方法，其中，所述撕揭装置包括
    定向轮；
    移动轮，可升降移动；
    胶带，穿过所述移动轮和所述定向轮，所述胶带位于所述偏光片保护膜的上方；所述胶带具有一粘附面，朝向所述偏光片保护膜；
    在撕揭所述偏光片保护膜之前，所述胶带的粘附面粘附于所述偏光片保护膜；
    在撕揭所述偏光片保护膜时，所述移动轮上升，带动所述胶带从所述延伸部向远离所述偏光片保护膜的方向移动，以将所述偏光片保护膜从所述偏光片本体上完全撕揭下来。
  9. 根据权利要求8所述的偏光片保护膜的撕揭方法，其中，所述偏光片保护膜具有至少一边角，所述延伸部连接于其中一所述边角，在撕揭所述偏光片保护膜时，所述移动轮上升带动所述胶带从具有所述延伸部的边角向远离所述偏光片保护膜的方向移动，以将所述偏光片保护膜从所述偏光片本体上完全撕揭下来。
  10. 根据权利要求8所述的偏光片保护膜的撕揭方法，其中，所述胶带的宽度与所述延伸部的宽度相同。
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