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Optical adhesive and manufacturing method and flexible display screen thereof

A flexible display and manufacturing method technology, applied in the field of optical glue and flexible display, can solve problems such as difficult to pass the nano-indentation pencil hardness test

Inactive Publication Date: 2019-03-15
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although a flexible screen using traditional support columns can pass the bending test, it is often difficult to pass the nanoindentation or pencil hardness test.

Method used

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  • Optical adhesive and manufacturing method and flexible display screen thereof
  • Optical adhesive and manufacturing method and flexible display screen thereof
  • Optical adhesive and manufacturing method and flexible display screen thereof

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Embodiment Construction

[0032] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0033] see figure 1 As shown, in one embodiment of the present invention, an optical glue 10 is proposed, including a first section 3 and a second section 4 arranged on both sides of the first section 3, the first section 3 Including the OCA glue layer 12 , the second section 4 includes the OCA glue layer 12 and the support pillars 11 arranged in the OCA glue layer 12 .

[0034] Wherein the elastic modulus of the support column 11 is 50-250GPa; the elastic...

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Abstract

The embodiment of the invention discloses an optical adhesive and a manufacturing method and flexible display screen thereof. The optical adhesive includes a first section and second sections disposedon both sides of the first section, the first section includes an OCA adhesive layer, and the second section includes OCA adhesive layers and support columns disposed in the OCA adhesive layers. Themanufacturing method of the optical adhesive includes the steps of defining the first section and the second sections which are located on the two sides of the first section on the surface of a provided substrate; preparing the support columns on the portions, in the second sections, of the substrate; coating the portions, in the first section and the second section, of the substrate with an OCA adhesive. The flexible display screen includes the optical adhesive. By embedding a support column in a non-bending area of the flexible display screen, the normal stiffness of the flexible display screen is improved, correspondingly the hardness of the flexible display screen is improved, and thus the flexible display screen can pass through pencil hardness and nanoindentation tests; the conventional OCA adhesive is adopted in a bending area without reinforcing the bending area, and therefore not only can the high hardness of the non-bending area be ensured, but also a good bending property ofthe flexible display screen in the bending area can be ensured.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical adhesive, a manufacturing method thereof and a flexible display screen. Background technique [0002] In recent years, OLED (Organic Light Emitting Display, Organic Light Emitting Display) display technology has been gradually popularized in the mobile phone and TV markets, and the yield rate has been greatly improved. It is an important research and development direction of future display technology. OCA glue (Optically Clear Adhesive, optical glue) is often used to bond the various film layers of flexible screens. Due to the low modulus of the glue material, viscous rheology is prone to occur under the action of external loads, which reduces the hardness of the flexible screen. Regarding the bending property of the flexible screen, it is hoped that the optical glue in the bending area has a lower modulus and good fluidity, so as to improve the bending resistance. ...

Claims

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Application Information

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IPC IPC(8): G09F9/30
CPCG09F9/301
Inventor 陈宝
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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