WO2020220429A1 - 光学胶膜 - Google Patents

光学胶膜 Download PDF

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Publication number
WO2020220429A1
WO2020220429A1 PCT/CN2019/089752 CN2019089752W WO2020220429A1 WO 2020220429 A1 WO2020220429 A1 WO 2020220429A1 CN 2019089752 W CN2019089752 W CN 2019089752W WO 2020220429 A1 WO2020220429 A1 WO 2020220429A1
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WO
WIPO (PCT)
Prior art keywords
tear
optical adhesive
adhesive film
protective film
line segment
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/CN2019/089752
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English (en)
French (fr)
Inventor
丁峰
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.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/607,306 priority Critical patent/US20210403768A1/en
Publication of WO2020220429A1 publication Critical patent/WO2020220429A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature

Definitions

  • This application relates to the technical field of adhesive materials, in particular to an optical adhesive film.
  • the bonding process uses optical clear adhesive (OCA) for bonding.
  • OCA optical clear adhesive
  • the thickness of the optical adhesive is generally thin.
  • the tearing position of the protective film 201 of the traditional optical glue is set on one corner of the protective film.
  • the protective film 201 is torn off from the thinner optical glue 200, the protective film is removed from one corner.
  • the film is easy to cause "gluing" phenomenon at the corner A of the optical glue.
  • the purpose of this application is to provide an optical adhesive film, which can prevent the glue layer from being pulled when the protective film on at least one side of the colloidal layer is torn off from the optical adhesive film.
  • An optical adhesive film comprising a colloidal layer and a first protective film and a second protective film attached to opposite sides of the colloidal layer
  • the first protective film has a first body and a first tear-off portion, the first body has a first side edge, and the first tear-off portion extends from the first side edge,
  • the thickness of the colloid layer is 0.5 ⁇ m-30 ⁇ m.
  • the first tear-off portion extends from the entire first side edge.
  • the number of the first tear-off part is at least one, and the shape of the first tear-off part is any of an isosceles triangle, an isosceles trapezoid, a semi-ellipse, a semicircle, and a rectangle One kind.
  • the first side has a plurality of disconnected line segments, and at least two of the disconnected line segments extend out of the first tear-off portion.
  • the first side edge includes a first line segment and a second line segment located at opposite ends of the first side edge, and the first side edge further includes a first line segment and a second line segment located at the opposite ends of the first side edge.
  • the third line segment in the middle of the second line segment, the first line segment, the second line segment, and the third line segment each extend one first tear-off part.
  • the second protective film has a second body and a second tear-off portion, the second body has a second side edge, and the second tear-off portion extends from the second side edge Out.
  • the second tear-off part and the first tear-off part are located on the same side of the optical adhesive film.
  • the vertical projection of the colloid layer on the first protective film is located in the first body, and the vertical projection of the colloidal layer on the second protective film is located in the second body. In the body, the vertical projection of the first body on the second protective film coincides with the second body.
  • the thickness of the colloid layer is 1 ⁇ m-25 ⁇ m.
  • the shape of the colloidal layer is a rectangle with a connecting section, the connecting section is located at a corner of the rectangle, and the connecting section is disposed on the colloidal layer close to the first tear-off The location of the department.
  • An optical adhesive film comprising a colloidal layer and a first protective film and a second protective film attached to opposite sides of the colloidal layer
  • the first protective film has a first body and a first tear-off portion, the first body has a first side edge, and the first tear-off portion extends from the first side edge.
  • the first tear-off portion extends from the entire first side edge.
  • the number of the first tear-off part is at least one, and the shape of the first tear-off part is any of an isosceles triangle, an isosceles trapezoid, a semi-ellipse, a semicircle, and a rectangle One kind.
  • the first side has a plurality of disconnected line segments, and at least two of the disconnected line segments extend out of the first tear-off portion.
  • the first side edge includes a first line segment and a second line segment located at opposite ends of the first side edge, and the first side edge further includes a first line segment and a second line segment located at the opposite ends of the first side edge.
  • the third line segment in the middle of the second line segment, the first line segment, the second line segment, and the third line segment each extend one first tear-off part.
  • the second protective film has a second body and a second tear-off portion, the second body has a second side edge, and the second tear-off portion extends from the second side edge Out.
  • the second tear-off part and the first tear-off part are located on the same side of the optical adhesive film.
  • the vertical projection of the colloid layer on the first protective film is located in the first body, and the vertical projection of the colloidal layer on the second protective film is located in the second body. In the body, the vertical projection of the first body on the second protective film coincides with the second body.
  • the thickness of the colloid layer is 1 ⁇ m-25 ⁇ m.
  • the shape of the colloidal layer is a rectangle with a connecting section, the connecting section is located at a corner of the rectangle, and the connecting section is disposed on the colloidal layer close to the first tear-off The location of the department.
  • the present application provides an optical adhesive film.
  • the first tear-off part is provided on the first side of the first protective film, so that when an external force is applied to the first tear-off part, the starting position of the separation of the colloidal layer and the first protective film It is a line contact, so that the stress on each point of the colloid layer at the initial position of the separation is small, and the phenomenon of rubber pulling on the colloid layer is avoided.
  • Figure 1 is a schematic diagram of the protective film being torn off from a corner of the colloid in the traditional technology
  • FIG. 2 is a side view of the optical adhesive film according to the first embodiment of the application.
  • FIG. 3 is a first plan view of the first protective film of the optical adhesive film shown in FIG. 2;
  • FIG. 4 is a schematic plan view of a second type of the first protective film of the optical adhesive film shown in FIG. 2;
  • Fig. 5 is a third plan view of the first protective film of the optical adhesive film shown in Fig. 2;
  • Figure 6 is a schematic plan view of the colloidal layer shown in Figure 2;
  • FIG. 7 is a side view of the optical adhesive film according to the second embodiment of the application.
  • FIG. 8 is a schematic plan view of the first protective film of the optical adhesive film shown in FIG. 7;
  • FIG. 9 is a schematic plan view of the colloidal layer of the optical adhesive film shown in FIG. 7;
  • FIG. 10 is a side view of the optical adhesive film according to the third embodiment of the application.
  • FIG. 11 is a top view of the optical adhesive film shown in FIG. 10.
  • the present application provides an optical adhesive film.
  • the optical adhesive film includes a colloidal layer and a first protective film and a second protective film attached to opposite sides of the colloidal layer.
  • the first protective film has a first body and a first tear-off part The first body has a first side edge, and the first tear-off portion extends from the first side edge.
  • the first tear-off part is provided on the first side of the first protective film, so that when an external force is applied to the first tear-off part, the initial position of separation between the colloid layer and the first protective film is line contact, so that the colloid The stress of the layer at the initial position of separation is small to avoid the phenomenon of rubber pull in the colloidal layer.
  • FIG. 2 is a side view of the optical adhesive film according to the first embodiment of the application.
  • the optical adhesive film 100 includes a colloid layer 10, a first protective film 11 and a second protective film 12.
  • the first protective film 11 and the second protective film 12 are respectively attached to two opposite sides of the colloidal layer 10.
  • the first protective film 11 has a first body 110 and a first tear-off part 111.
  • the shape of the first body 110 is rectangular. Specifically, the shape of the first body 110 is a rectangle.
  • the first body 110 has a first side 1101. When the shape of the first body 110 is a rectangle, the first side 1101 is a side of the first body 110 with a shorter length. In other embodiments of the optical adhesive film, the first side 1101 may also be the longer side of the first body 110.
  • FIG. 3 is a first plan view of the first protective film of the optical adhesive film shown in FIG. 2.
  • the first tear-off portion 111 extends from the first side 1101. Specifically, the first tear-off portion 111 extends from the entire first side 1101.
  • the number of the first tear-off part 111 is at least one, and the first tear-off part 111 is an axisymmetric figure.
  • the shape of the first tear-off part 111 is an isosceles triangle, an isosceles trapezoid, a semi-ellipse, a semicircle, and Any of the rectangles.
  • the number of the first tear-off 111 is one
  • the shape of the first tear-off portion 111 is an isosceles triangle
  • the base of the isosceles triangle coincides with the first side 1101
  • the isosceles triangle is opposite to the first side 1101
  • the angle of the apex angle is greater than 60 degrees.
  • the first protective film 11 When the first protective film 11 needs to be removed from the colloidal layer 10, external force acts on the top corner of the first tear-off part 111 of the isosceles triangle. Since the first tear-off part 111 is an isosceles triangle, the first protective film 11 is The peeling force between the colloidal layer 10 and the colloidal layer 10 is evenly dispersed to each point of the starting position where the colloidal layer 10 separates from the first protective film 11, and the starting position is on the colloidal layer 10 that the colloidal layer 10 is close to the first side 1101 Compared with the traditional technology, the colloidal layer 10 and the first protective film 11 of this embodiment are in the initial position where they are separated, and the colloidal layer 10 is in line contact with the first protective film 11, which can prevent the colloidal layer 10 from being pulled out. .
  • FIG. 4 is a second plan view of the first protective film of the optical adhesive film shown in FIG.
  • the first protective film 11 shown in FIG. 4 is basically similar to the first protective film 11 shown in FIG. 3, except that the number of the first tear-off portions 111 is multiple, and the multiple first tear-off portions 111 are composed of the entire The first side 1101 extends out.
  • the first tear-off part 111 is an isosceles triangle, and the number of the first tear-off part 111 is two.
  • the first protective film 11 needs to be peeled off from the colloidal layer 10, external force is required to act on the two first peeling portions 111 respectively.
  • the main body applying external force is a manipulator
  • the number of manipulators required is two.
  • FIG. 5 is a third plan view of the first protective film of the optical adhesive film shown in FIG. 2.
  • the first side 1101 has a plurality of unconnected line segments, and at least two unconnected line segments extend out of the first tear-off portion 111.
  • the first side 1101 includes a first line segment 1102 and a second line segment 1103 at opposite ends of the first side 1101, and the first side 1101 also includes a first line segment 1102 and a second line segment 1103.
  • the three line segments 1104, the first line segment 1102, the second line segment 1103, and the third line segment 1104 each extend a first tear-off portion 111.
  • the starting position of the colloidal layer 10 and the first protective film 11 is the side of the colloidal layer 10 close to the first side 1101, that is, the starting position of the colloidal layer 10 and the first protective film 11 is
  • the glue layer 10 is close to the side of the first side 1101 to prevent the peeling force from acting on a point when the glue layer 10 is separated and the phenomenon of glue pulling occurs.
  • FIG. 6 is a schematic plan view of the colloid layer shown in FIG. 2.
  • the colloidal layer 10 is rectangular.
  • the colloidal layer 10 is an optically transparent glue.
  • the thickness of the colloidal layer 10 is 0.5 ⁇ m-30 ⁇ m. Further, the thickness of the colloidal layer 10 is 1 ⁇ m-25 ⁇ m. Specifically, the thickness of the colloidal layer 10 is 5 microns, 8 microns or 10 microns. The thinner the thickness of the gel layer 10 is, when the gel layer 10 is applied to a foldable or flexible display panel, the foldable or flexible display panel has better foldability.
  • the orthographic projection of the colloidal layer 10 on the first protective film 11 exactly coincides with the first body 110, that is, the size of the colloidal layer 10 is equal to the size of the first body 110 of the first protective film 11.
  • the orthographic projection of the colloidal layer 10 on the second protective film 12 exactly coincides with the second body 120.
  • the second protective film 12 has a second body 120 and a second tear-off portion 121.
  • the second body 120 has a second side 1201, and the second tear-off portion 121 extends from the second side 1201.
  • the second tear-off part 121 and the first tear-off part 111 are located on the same side of the optical adhesive film 100. It is understandable that the second tear-off part 121 and the first tear-off part 111 may also be located on different sides of the optical adhesive film 100. For example, the second tear-off part 121 and the first tear-off part 111 are respectively located on the optical adhesive film 100. Opposite sides.
  • the second tear-off portion 121 extends from the entire second side 1201.
  • the number of the second tear-off part 121 is at least one, and the shape of the second tear-off part 121 is any one of an isosceles triangle, an isosceles trapezoid, a semi-ellipse, a semicircle, and a rectangle.
  • the second tear-off portion 121 may also extend from a part of the second side 1201.
  • the second tear-off part 121 may be the same as the first tear-off part 111 to make the first protective film 11 and the second protective film 12 the same, thereby simplifying the overall manufacturing process of the optical adhesive film 100.
  • the thickness of the first protective film 11 and the second protective film 12 are both 30 ⁇ m-100 ⁇ m, the thickness of the first protective film 11 may be 50 ⁇ m, and the thickness of the second protective film 12 may be 75 ⁇ m.
  • the material of the first protective film 11 and the second protective film 12 is selected from polyethylene terephthalate or other materials.
  • FIG. 7 is a side view of the optical adhesive film according to the second embodiment of the application
  • FIG. 8 is a schematic plan view of the first protective film of the optical adhesive film shown in FIG. 7
  • FIG. 9 is a diagram 7 shows a schematic plan view of the colloidal layer of the optical adhesive film.
  • the optical adhesive film 100 includes a colloid layer 10, a first protective film 11 and a second protective film 12.
  • the first protective film 11 and the second protective film 12 are respectively attached to two opposite sides of the colloidal layer 10.
  • the first protective film 11 has a first body 110 and a first tear-off part 111.
  • the first body 110 is rectangular, the first body 110 has a first side 1101, and the first tear-off portion 111 extends from the first side 1101. Specifically, the first tear-off portion 111 extends from one end of the first side 1101.
  • the shape of the first tear-off part 111 may be a rectangle, a triangle, a semicircle or other figures. Specifically, the shape of the first tear-off portion 111 is rectangular.
  • the shape of the gel layer 10 is a rectangle with a connecting section 1101, the connecting section 1101 is located at the corner of the rectangle and the connecting section 1101 is disposed at a position of the gel layer 10 close to the first tear-off part 111.
  • the colloidal layer 10 has a first side 101, a second side 102, a third side 103, and a fourth side 104, and a connecting section 1011 connecting the first side 101 and the third side 103.
  • the first side 101 and the fourth side 104 are opposite straight lines, the length of the first side 101 is slightly smaller than the length of the fourth side 104, the second side 102 and the third side 103 are opposite straight lines, and the length of the third side 103 is slightly smaller. Less than the length of the second side 102.
  • the first side 101 is located at an end of the glue layer 10 close to the first tear-off portion 111, and the connecting section 1011 is located on the side of the glue layer 10 close to the first tear-off portion 111.
  • the connecting section 1011 is a straight line section. It can be understood that the connecting segment 1011 may also be an arc segment.
  • the second protective film 12 has a second body 120 and a second tear-off portion 121.
  • the second body 120 has a second side 1201, and the second tear-off portion 121 extends from the second side 1201.
  • the second protective film 12 has the same structure as the first protective film 11, and will not be described in detail here.
  • the structure of the second protective film 12 and the shape of the first protective film 11 may also be different.
  • the first side 1101 and the second side 1201 are located on the same side of the optical adhesive film 100, and the second tear-off part 121 is located on the second side.
  • the end where the side 1201 is located is opposite to the end where the first tear-off portion 111 is located at the first side 1101.
  • the second side 102 and the first side 101 of the colloidal layer 10 are connected by a second connecting section to avoid When the second protective film 12 is torn off from the colloidal layer 10, the glue pulling phenomenon occurs.
  • the first protective film 11 When it is necessary to tear off the first protective film 11 from the colloidal layer 10, the first protective film 11 is peeled off from the first side 1101 or from one corner, and the colloidal layer 10 is set close to the corner of the first tear-off part 111 There is a connecting section 1011, and the starting position of the separation of the colloidal layer 10 and the first protective film 11 is line contact, and the peeling force will not be concentrated at one point, which will cause the glue layer to pull the glue problem.
  • FIG. 10 is a side view of the optical adhesive film according to the third embodiment of the application
  • FIG. 11 is a top view of the optical adhesive film shown in FIG.
  • the optical adhesive film shown in FIG. 10 is basically similar to the optical adhesive film shown in FIG. 2, except that the vertical projection of the colloidal layer 10 on the first protective film 11 is located in the first body 110, and the colloidal layer 10 is in the second protective film.
  • the vertical projection on the film 12 is located in the second body 120, and the vertical projection of the first body 110 on the second protective film 12 coincides with the second body 120, that is, the size of the first body 110 of the first protective film 11 is larger than the colloid layer
  • the size of the second body 120 of the second protective film 12 is larger than the size of the colloidal layer 10, and the size of the second body 120 and the first body 110 are the same. Since the colloid layer 10 has fluidity, the size of the first body 110 and the size of the second body 120 are larger than the size of the colloid layer 10 to prevent the colloid layer 10 from overflowing from the optical adhesive film 100.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

一种光学胶膜(100)，通过在第一保护膜(11)的第一侧边(1101)设置第一撕除部(111)，使得外力施加于第一撕除部(111)时，胶体层(10)与第一保护膜(11)分离的起始位置为线接触，从而使得胶体层(10)在分离的起始位置各点所受的应力较小，避免胶体层(10)出现拉胶的现象。

Description

光学胶膜 技术领域
本申请涉及胶粘材料技术领域，尤其涉及一种光学胶膜。
 背景技术
随着柔性显示面板技术的成熟，柔性显示面板的量产化已经成为可能，柔性显示面板的可量产化为可折叠显示面板的制造打下坚实基础。
在可折叠显示面板的模组制程中，贴合工艺都是采用光学胶（Optical Clear Adhesive，OCA）进行贴合，为保证可折叠面板的可折叠特性，光学胶厚度普遍较薄。如图1所示，传统光学胶的保护膜201的撕膜位置设置于保护膜的一个角上，将保护膜201从厚度较薄的光学胶200上撕去时，从一个角上撕除保护膜易造成光学胶的转角处A点出现“拉胶”现象。
因此，有必要提出一种技术方案以解决光学胶厚度较薄时从保护膜的一个角上撕除保护膜容易造成光学胶出现拉胶的问题。
 技术问题
本申请的目的在于提供一种光学胶膜，从该光学胶膜上撕除胶体层上至少一侧的保护膜时可以避免胶体层出现拉胶现象。
 技术解决方案
一种光学胶膜，所述光学胶膜包括胶体层以及贴附于所述胶体层相对两侧的第一保护膜以及第二保护膜，
所述第一保护膜具有第一本体和第一撕除部，所述第一本体具有第一侧边，所述第一撕除部由所述第一侧边延伸出，
所述胶体层的厚度为0.5微米-30微米。
在上述光学胶膜中，所述第一撕除部由整个所述第一侧边延伸出。
在上述光学胶膜中，所述第一撕除部的数目为至少一个，所述第一撕除部的形状为等腰三角形、等腰梯形、半椭圆形、半圆形以及矩形中的任意一种。
在上述光学胶膜中，所述第一侧边具有多个互相不连接的线段，至少两个所述互相不连接的线段延伸出所述第一撕除部。
在上述光学胶膜中，所述第一侧边包括位于所述第一侧边相对两端的第一线段和第二线段，所述第一侧边还包括位于所述第一线段和所述第二线段中间的第三线段，所述第一线段、所述第二线段以及所述第三线段各自延伸出一个所述第一撕除部。
在上述光学胶膜中，所述第二保护膜具有第二本体和第二撕除部，所述第二本体具有第二侧边，所述第二撕除部由所述第二侧边延伸出。
在上述光学胶膜中，所述第二撕除部和所述第一撕除部位于所述光学胶膜的同一侧。
在上述光学胶膜中，所述胶体层在所述第一保护膜上的垂直投影位于所述第一本体内，所述胶体层在所述第二保护膜上的垂直投影位于所述第二本体内，所述第一本体在所述第二保护膜上的垂直投影与所述第二本体重合。
在上述光学胶膜中，所述胶体层的厚度为1微米-25微米。
在上述光学胶膜中，所述胶体层的形状为具有一连接段的矩形，所述连接段位于所述矩形的转角处且所述连接段设置于所述胶体层靠近所述第一撕除部的位置。
一种光学胶膜，所述光学胶膜包括胶体层以及贴附于所述胶体层相对两侧的第一保护膜以及第二保护膜，
所述第一保护膜具有第一本体和第一撕除部，所述第一本体具有第一侧边，所述第一撕除部由所述第一侧边延伸出。
在上述光学胶膜中，所述第一撕除部由整个所述第一侧边延伸出。
在上述光学胶膜中，所述第一撕除部的数目为至少一个，所述第一撕除部的形状为等腰三角形、等腰梯形、半椭圆形、半圆形以及矩形中的任意一种。
在上述光学胶膜中，所述第一侧边具有多个互相不连接的线段，至少两个所述互相不连接的线段延伸出所述第一撕除部。
在上述光学胶膜中，所述第一侧边包括位于所述第一侧边相对两端的第一线段和第二线段，所述第一侧边还包括位于所述第一线段和所述第二线段中间的第三线段，所述第一线段、所述第二线段以及所述第三线段各自延伸出一个所述第一撕除部。
在上述光学胶膜中，所述第二保护膜具有第二本体和第二撕除部，所述第二本体具有第二侧边，所述第二撕除部由所述第二侧边延伸出。
在上述光学胶膜中，所述第二撕除部和所述第一撕除部位于所述光学胶膜的同一侧。
在上述光学胶膜中，所述胶体层在所述第一保护膜上的垂直投影位于所述第一本体内，所述胶体层在所述第二保护膜上的垂直投影位于所述第二本体内，所述第一本体在所述第二保护膜上的垂直投影与所述第二本体重合。
在上述光学胶膜中，所述胶体层的厚度为1微米-25微米。
在上述光学胶膜中，所述胶体层的形状为具有一连接段的矩形，所述连接段位于所述矩形的转角处且所述连接段设置于所述胶体层靠近所述第一撕除部的位置。
 有益效果
本申请提供一种光学胶膜，通过在第一保护膜的第一侧边设置第一撕除部，使得外力施加于第一撕除部时，胶体层与第一保护膜分离的起始位置为线接触，从而使得胶体层在分离的起始位置各点所受的应力较小，避免胶体层出现拉胶的现象。
 附图说明
图1为传统技术中保护膜从胶体的一角撕除的示意图；
图2为本申请第一实施例光学胶膜的侧视图；
图3为图2所示光学胶膜的第一保护膜的第一种平面示意图；
图4为图2所示光学胶膜的第一保护膜的第二种平面示意图；
图5为图2所示光学胶膜的第一保护膜的第三种平面示意图；
图6为图2所示胶体层的平面示意图；
图7为本申请第二实施例光学胶膜的侧视图；
图8为图7所示光学胶膜的第一保护膜的平面示意图；
图9为图7所示光学胶膜的胶体层的平面示意图；
图10为本申请第三实施例光学胶膜的侧视图；
图11为图10所示光学胶膜的俯视图。
 本发明的实施方式
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，都属于本申请保护的范围。
本申请提供一种光学胶膜，该光学胶膜包括胶体层以及贴附于胶体层相对两侧的第一保护膜以及第二保护膜，第一保护膜具有第一本体和第一撕除部，第一本体具有第一侧边，第一撕除部由第一侧边延伸出。
本申请通过在第一保护膜的第一侧边设置第一撕除部，使得外力施加于第一撕除部时，胶体层与第一保护膜分离的起始位置为线接触，从而使得胶体层在分离的起始位置存在的应力较小，避免胶体层出现拉胶的现象。
以下结合具体实施例对上述技术方案进行描述。
请参阅图2，其为本申请第一实施例光学胶膜的侧视图。光学胶膜100包括胶体层10、第一保护膜11以及第二保护膜12。第一保护膜11和第二保护膜12分别贴附于胶体层10相对的两侧。
第一保护膜11具有第一本体110和第一撕除部111。第一本体110的形状为矩形。具体地，第一本体110的形状为长方形。第一本体110具有第一侧边1101，第一本体110的形状为长方形时，第一侧边1101为第一本体110长度较短的边。在光学胶膜的其他实施例中，第一侧边1101也可以为第一本体110长度较长的边。
请参阅图2和图3，图3为图2所示光学胶膜的第一保护膜的第一种平面示意图。第一撕除部111由第一侧边1101延伸出。具体地，第一撕除部111由整个第一侧边1101延伸出。第一撕除部111的数目为至少一个，第一撕除部111为轴对称图形，例如，第一撕除部111的形状为等腰三角形、等腰梯形、半椭圆形、半圆形以及矩形中的任意一种。具体地，第一撕除111的数目为一个，第一撕除部111的形状为等腰三角形，等腰三角形的底边与第一侧边1101重合，等腰三角形与第一侧边1101相对的顶角的角度大于60度。
需要将第一保护膜11从胶体层10上撕除时，外力作用于等腰三角形第一撕除部111的顶角，由于第一撕除部111为等腰三角形，使得第一保护膜11与胶体层10之间的剥离力均匀地分散至胶体层10与第一保护膜11分离的起始位置的各个点，该起始位置在胶体层10上为胶体层10靠近第一侧边1101的侧边，相对传统技术，本实施例胶体层10与第一保护膜11在两者分离的起始位置，胶体层10与第一保护膜11线接触，能避免胶体层10出现拉胶现象。
请参阅图4，其为图2所示光学胶膜的第一保护膜的第二种平面示意图。图4所示第一保护膜11与图3所示第一保护膜11基本相似，不同之处在于，第一撕除部111的数目为多个，多个第一撕除部111是由整个第一侧边1101延伸出。具体地，第一撕除部111为等腰三角形，第一撕除部111的数目为两个。
需要将第一保护膜11从胶体层10上撕除时，需要外力分别作用于两个第一撕除部111。例如，施加外力的主体为机械手时，需要机械手的数目为两个。
请参阅图5，其为图2所示光学胶膜的第一保护膜的第三种平面示意图。第一侧边1101具有多个互相不连接的线段，至少两个互相不连接的线段延伸出第一撕除部111。
具体地，第一侧边1101包括位于第一侧边1101相对两端的第一线段1102和第二线段1103，第一侧边1101还包括位于第一线段1102和第二线段1103中间的第三线段1104，第一线段1102、第二线段1103以及第三线段1104各自延伸出一个第一撕除部111。
需要将第一保护膜11从胶体层10上撕除时，外力分别作用于由至少两个互相不连接的线段延伸出的第一撕除部111，以使得整个第一保护膜11的一侧与胶体层10分离，胶体层10与第一保护膜11分离的起始位置为胶体层10靠近第一侧边1101的侧边，即胶体层10与第一保护膜11分离的起始位置为胶体层10靠近第一侧边1101的一侧，避免胶体层10分离时剥离力作用于一点而出现拉胶现象。
请参阅图6，其为图2所示胶体层的平面示意图。胶体层10为矩形。胶体层10为光学透明胶。胶体层10的厚度为0.5微米-30微米。进一步地，胶体层10的厚度为1微米-25微米。具体地，胶体层10的厚度为5微米、8微米或者10微米。胶体层10的厚度越薄，胶体层10应用于可折叠或柔性显示面板时，可折叠或柔性显示面板具有更好的可折叠性。胶体层10在第一保护膜11上的正投影与第一本体110恰好重合，即胶体层10的尺寸与第一保护膜11的第一本体110的尺寸相等。胶体层10在第二保护膜12上的正投影与第二本体120恰好重合。
请继续参阅图2，第二保护膜12具有第二本体120和第二撕除部121，第二本体120具有第二侧边1201，第二撕除部121由第二侧边1201延伸出。第二撕除部121和第一撕除部111位于光学胶膜100的同一侧。可以理解的是，第二撕除部121和第一撕除部111也可以位于光学胶膜100的不同侧，例如，第二撕除部121和第一撕除部111分别位于光学胶膜100相对的两侧。第二撕除部121由整个第二侧边1201延伸出。第二撕除部121的数目至少为一个，第二撕除部121的形状为等腰三角形、等腰梯形、半椭圆形、半圆形以及矩形中的任意一种。第二撕除部121也可以从第二侧边1201的部分段延伸出。第二撕除部121可以与第一撕除部111相同以使第一保护膜11和第二保护膜12相同，从而使得光学胶膜100的整体制造工艺简化。
第一保护膜11和第二保护膜12的厚度均为30微米-100微米，第一保护膜11的厚度可以为50微米，第二保护膜12的厚度为75微米。第一保护膜11和第二保护膜12的制备材质选自聚对苯二甲酸乙二醇酯或者其他材料。
请参阅图7、图8以及图9，图7为本申请第二实施例光学胶膜的侧视图，图8为图7所示光学胶膜的第一保护膜的平面示意图，图9为图7所示光学胶膜的胶体层的平面示意图。光学胶膜100包括胶体层10、第一保护膜11以及第二保护膜12。第一保护膜11和第二保护膜12分别贴附于胶体层10相对的两侧。
第一保护膜11具有第一本体110和第一撕除部111。第一本体110为矩形，第一本体110具有第一侧边1101，第一撕除部111从第一侧边1101上延伸出。具体地，第一撕除部111从第一侧边1101的一端延伸出。第一撕除部111的形状可以为矩形、三角形、半圆形或者其他图形。具体地，第一撕除部111的形状为矩形。
胶体层10的形状为具有一连接段1101的矩形，连接段1101位于矩形的转角处且连接段1101设置于胶体层10靠近第一撕除部111的位置。具体地，胶体层10具有第一边101、第二边102、第三边103以及第四边104以及连接第一边101和第三边103的连接段1011。第一边101和第四边104为相对的直线，第一边101的长度稍小于第四边104的长度，第二边102和第三边103为相对的直线，第三边103的长度稍小于第二边102的长度。第一边101位于胶体层10靠近第一撕除部111的一端，连接段1011位于胶体层10靠近第一撕除部111的一侧。连接段1011为直线段。可以理解的是，连接段1011也可以为弧线段。
第二保护膜12具有第二本体120和第二撕除部121，第二本体120具有第二侧边1201，第二撕除部121由第二侧边1201延伸出。第二保护膜12与第一保护膜11的结构相同，此处不作详述。第二保护膜12的结构和第一保护膜11的形状也可以不同，例如，第一侧边1101和第二侧边1201位于光学胶膜100的同侧，第二撕除部121位于第二侧边1201所在端与第一撕除部111位于第一侧边1101的所在端相对，此时，胶体层10的第二边102和第一边101之间通过第二连接段连接，以避免第二保护膜12从胶体层10上撕除时出现拉胶现象。
需要将第一保护膜11从胶体层10上撕除时，使第一保护膜11从第一侧边1101开始剥离或从一角开始剥离，胶体层10靠近第一撕除部111的转角处设置有连接段1011，胶体层10与第一保护膜11分离的起始位置均为线接触，不会出现剥离力集中于一点而导致胶体层出现拉胶问题。
请参阅图10以及图11，图10为本申请第三实施例光学胶膜的侧视图，图11为图10所示光学胶膜的俯视图。图10所示光学胶膜与图2所示光学胶膜基本相似，不同之处在于，胶体层10在第一保护膜11上的垂直投影位于第一本体110内，胶体层10在第二保护膜12上的垂直投影位于第二本体120内，第一本体110在第二保护膜12上的垂直投影与第二本体120重合，即第一保护膜11的第一本体110的尺寸大于胶体层10的尺寸，第二保护膜12的第二本体120的尺寸大于胶体层10的尺寸，第二本体120和第一本体110的尺寸相同。由于胶体层10具有流动性，第一本体110的尺寸和第二本体120的尺寸大于胶体层10的尺寸能避免胶体层10从光学胶膜100中溢出。
以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种光学胶膜，其中，所述光学胶膜包括胶体层以及贴附于所述胶体层相对两侧的第一保护膜以及第二保护膜，
    所述第一保护膜具有第一本体和第一撕除部，所述第一本体具有第一侧边，所述第一撕除部由所述第一侧边延伸出，
    所述胶体层的厚度为0.5微米-30微米。
  2. 根据权利要求1所述的光学胶膜，其中，所述第一撕除部由整个所述第一侧边延伸出。
  3. 根据权利要求2所述的光学胶膜，其中，所述第一撕除部的数目为至少一个，所述第一撕除部的形状为等腰三角形、等腰梯形、半椭圆形、半圆形以及矩形中的任意一种。
  4. 根据权利要求1所述的光学胶膜，其中，所述第一侧边具有多个互相不连接的线段，至少两个所述互相不连接的线段延伸出所述第一撕除部。
  5. 根据权利要求4所述的光学胶膜，其中，所述第一侧边包括位于所述第一侧边相对两端的第一线段和第二线段，所述第一侧边还包括位于所述第一线段和所述第二线段中间的第三线段，所述第一线段、所述第二线段以及所述第三线段各自延伸出一个所述第一撕除部。
  6. 根据权利要求1所述的光学胶膜，其中，所述第二保护膜具有第二本体和第二撕除部，所述第二本体具有第二侧边，所述第二撕除部由所述第二侧边延伸出。
  7. 根据权利要求6所述的光学胶膜，其中，所述第二撕除部和所述第一撕除部位于所述光学胶膜的同一侧。
  8. 根据权利要求6所述的光学胶膜，其中，所述胶体层在所述第一保护膜上的垂直投影位于所述第一本体内，所述胶体层在所述第二保护膜上的垂直投影位于所述第二本体内，所述第一本体在所述第二保护膜上的垂直投影与所述第二本体重合。
  9. 根据权利要求1所述的光学胶膜，其中，所述胶体层的厚度为1微米-25微米。
  10. 根据权利要求1所述的光学胶膜，其中，所述胶体层的形状为具有一连接段的矩形，所述连接段位于所述矩形的转角处且所述连接段设置于所述胶体层靠近所述第一撕除部的位置。
  11. 一种光学胶膜，其中，所述光学胶膜包括胶体层以及贴附于所述胶体层相对两侧的第一保护膜以及第二保护膜，
    所述第一保护膜具有第一本体和第一撕除部，所述第一本体具有第一侧边，所述第一撕除部由所述第一侧边延伸出。
  12. 根据权利要求11所述的光学胶膜，其中，所述第一撕除部由整个所述第一侧边延伸出。
  13. 根据权利要求12所述的光学胶膜，其中，所述第一撕除部的数目为至少一个，所述第一撕除部的形状为等腰三角形、等腰梯形、半椭圆形、半圆形以及矩形中的任意一种。
  14. 根据权利要求11所述的光学胶膜，其中，所述第一侧边具有多个互相不连接的线段，至少两个所述互相不连接的线段延伸出所述第一撕除部。
  15. 根据权利要求14所述的光学胶膜，其中，所述第一侧边包括位于所述第一侧边相对两端的第一线段和第二线段，所述第一侧边还包括位于所述第一线段和所述第二线段中间的第三线段，所述第一线段、所述第二线段以及所述第三线段各自延伸出一个所述第一撕除部。
  16. 根据权利要求11所述的光学胶膜，其中，所述第二保护膜具有第二本体和第二撕除部，所述第二本体具有第二侧边，所述第二撕除部由所述第二侧边延伸出。
  17. 根据权利要求16所述的光学胶膜，其中，所述第二撕除部和所述第一撕除部位于所述光学胶膜的同一侧。
  18. 根据权利要求16所述的光学胶膜，其中，所述胶体层在所述第一保护膜上的垂直投影位于所述第一本体内，所述胶体层在所述第二保护膜上的垂直投影位于所述第二本体内，所述第一本体在所述第二保护膜上的垂直投影与所述第二本体重合。
  19. 根据权利要求11所述的光学胶膜，其中，所述胶体层的厚度为1微米-25微米。
  20. 根据权利要求11所述的光学胶膜，其中，所述胶体层的形状为具有一连接段的矩形，所述连接段位于所述矩形的转角处且所述连接段设置于所述胶体层靠近所述第一撕除部的位置。
PCT/CN2019/089752 2019-04-28 2019-06-03 光学胶膜 Ceased WO2020220429A1 (zh)

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