Modified polyamide acid material and application thereof
A flexible technology of polyamic acid and polyimide, used in climate sustainability, photovoltaic power generation, electrical components, etc., can solve the problem of low product yield and other problems, achieve low prices, reduce production costs, and excellent thermal stability Effect
Inactive Publication Date: 2020-08-28
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
[0007] An object of the present invention is to provide a method for preparing a display panel, which can solve the problem in the prior art that the yield of the product is not high in order to realize the separation of the PI flexible substrate and the glass substrate
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[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.
[0036] An embodiment of the present invention provides a modified polyamic acid material, which includes polyamic acid, a polar aprotic solvent, and an ultraviolet absorber.
[0037] In the modified polyamic acid material, the mass fraction of the polyamic acid is 10-20wt.%, the mass fraction of the ultraviolet absorber is 2-5wt.%, and the mass fraction of the polar aprotic solvent is 75-88wt.%.
[0038] Wherein the polyamic acid is synthesized by low-temperature multi-componen...
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Abstract
The invention discloses a modified polyamide acid material and application thereof. The modified polyamide acid material comprises polyamide acid and an ultraviolet absorbent, and the ultraviolet absorbent contains an ultraviolet absorption group. The ultraviolet absorbent is added into a polyimide flexible substrate, the ultraviolet absorbent absorbs ultraviolet light to generate inert gas, and the pressure intensity generated by the inert gas can reduce the bonding force between the polyimide flexible substrate and the glass substrate, so the polyimide flexible substrate and the glass substrate are automatically separated, damage to the polyimide flexible substrate in the laser stripping or mechanical stripping process can be improved, the separation yield of the flexible substrate and the glass substrate is increased, meanwhile, the price of the ultraviolet absorbent is low, and the production cost is also reduced.
Description
technical field [0001] The present application relates to the technical field of display panels, in particular to a modified polyamic acid material and its application. Background technique [0002] Compared with traditional display panels based on glass, flexible display panels based on flexible film materials can realize various display forms such as inner and outer folding, multi-folding and even curling. Therefore, flexible display has become a hot spot in the current display field and is also a main development direction. [0003] Polyimide (PI), especially transparent PI, has become the material of choice for flexible substrates in flexible display panels due to its comprehensive properties such as excellent optical properties and heat resistance. [0004] In the prior art, in order to realize the separation of the PI flexible substrate and the glass substrate, there are two common methods as follows: (1) Mechanical peeling process: by introducing a debonding layer be...
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IPC IPC(8): C08L79/08C08K5/00H01L51/00H01L51/56H10K99/00
CPCC08K5/005H10K71/80H10K77/111C08L79/08Y02E10/549Y02P70/50
Inventor 李林霜
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD