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A kind of ultra-thin flexible cover plate stripping method

A flexible cover and ultra-thin technology, applied in the field of film release of ultra-thin flexible cover plates, can solve the problems of increased production cost, low environmental cleanliness, limited mechanical properties, etc. rate effect

Active Publication Date: 2022-05-31
芜湖东信光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even so, due to the brittleness and strength of the glass itself, it is easy to shatter and sputter after being broken, which is harmful to the human body. Therefore, pure UTG cannot be applied to the outermost layer of the display device alone.
[0003] At present, the folding display cover on the market is basically made of flexible plastic. Although it can meet the folding requirements, due to the limitation of its mechanical properties, the surface of the flexible plastic cover is easily scratched and easily broken.
In addition, there is also a flexible cover made of transparent polyimide (CPI) bonded with UTG, but after repeated use, the flexible cover will have creases in the bending area and the screen is prone to defects such as ripples, which will affect the performance of the display device. application
[0004] In order to improve this situation, a plan to coat UTG with polymer organic materials to make cover plates was proposed. However, due to factors such as immature preparation process, low environmental cleanliness and low purity of pharmaceuticals, the prepared ultra-thin flexible cover plates It is inevitable that there will be some poor appearance or performance
The cost of UTG is relatively high, and directly discarding UTG due to defects caused by the coating of polymer organic materials is not only wasteful, but also greatly increases production costs

Method used

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  • A kind of ultra-thin flexible cover plate stripping method
  • A kind of ultra-thin flexible cover plate stripping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for stripping an ultra-thin flexible cover plate, comprising the following steps:

[0032] 1) Prepare the pretreatment solution: mix 30wt% ethanol, 15wt% DMAc and 55wt% pure water to obtain a pretreatment solution, heat it to 40°C, place an ultra-thin flexible cover plate poorly coated with polyurethane material in it, adjust the ultrasonic The frequency is 2.3KHz, ultrasonic treatment for 30min;

[0033] 2) Configure the release solution: stir 50wt% pure water, 40wt% ethanol and 10wt% mixed solution, wherein the mixed solution is configured by glycerol, propylene glycol, and polyethylene glycol at a ratio of 1:2:2 to obtain a release film Process the solution, heat it to 65°C, put the ultra-thin flexible cover plate treated in step 1) in it, set the ultrasonic frequency to 2.5KHz; ultrasonic treatment for 1.5h;

[0034] 3) Cleaning: The ultra-thin flexible cover plate treated in step 2) is soaked and cleaned in 60°C pure water for 20 minutes under ultrasonic ...

Embodiment 2

[0036] A method for stripping an ultra-thin flexible cover plate, comprising the following steps:

[0037] 1) Prepare the pretreatment solution: mix 25wt% ethanol, 10wt% dichloromethane and 65wt% pure water to obtain the pretreatment solution, heat it to 40°C, place the ultra-thin flexible cover plate coated with poor epoxy resin material Among them, adjust the ultrasonic power to 2.5KHz, and ultrasonically treat for 45 minutes;

[0038] 2) Configure the release solution: stir 55wt% pure water, 35wt% ethanol and 10wt% mixed solution, wherein the mixed solution is configured by glycerol, propylene glycol, and polyethylene glycol in a ratio of 5:2:3 to obtain a release film Treat the solution, heat it to 60°C, place the ultra-thin flexible cover plate treated in step 1) in it, set the ultrasonic power to 3.0KHz, and ultrasonically treat for 1.5h;

[0039] 3) Cleaning: The ultra-thin flexible cover plate treated in step 2) is soaked and cleaned in 65°C pure water for 30 minutes ...

Embodiment 3

[0041] A method for stripping an ultra-thin flexible cover plate, comprising the following steps:

[0042] 1) Configure pretreatment solution: mix 25wt% ethanol, 15wt% acetone and 60wt% pure water to obtain a pretreatment solution, heat it to 45°C, place an ultra-thin flexible cover plate coated with poor PMMA in it, adjust the ultrasonic The power is 2.5KHz, ultrasonic treatment for 50min;

[0043] 2) Configure the stripping solution: stir 50%wt pure water, 40wt% ethanol and 10wt% mixed solution, wherein the mixed solution is configured by glycerol, propylene glycol, and polyethylene glycol in a ratio of 4:3:3, and the stripped solution is obtained. Membrane treatment solution, heated to 65°C, put the ultra-thin flexible cover plate treated in step 1) in it, set the ultrasonic power to 3.0KHz, and ultrasonically treat for 1.5h;

[0044] 3) Cleaning: The ultra-thin flexible cover plate treated in step 2) was soaked and cleaned in 70°C pure water for 25 minutes under ultrasoni...

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PUM

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Abstract

The invention provides a method for stripping an ultra-thin flexible cover plate, which mixes common organic solvents with low environmental hazards to prepare a stripping agent, and utilizes the principle of similar compatibility between organic solvents and high-molecular organic materials to realize high-molecular The activated decomposition of the organic material film and then falling off greatly improves the rework rate of defective ultra-thin flexible cover plates, saving costs for UTG and its subsequent processing. Compared with the prior art, the pretreatment solution and the stripping solution of the present invention have simple formulas, easy-to-obtain raw materials, low toxicity, and basically no harm to the human body and the environment; the stripping process is easy to operate, requires little manpower, has high stripping efficiency, and is practical Good sex. The invention provides a brand-new idea for the rework of the ultra-thin flexible cover, and becomes a major milestone in the development of the ultra-thin flexible cover.

Description

technical field [0001] The invention belongs to the technical field of ultra-thin flexible cover plates, and in particular relates to an ultra-thin flexible cover plate stripping method. Background technique [0002] With the rapid development of science and technology, consumers pay more and more attention to the lightness and thinness of electronic products. Ultra-thin flexible glass (UTG) has become a hot spot in current research and development. UTG refers to flexible glass with a glass thickness of less than 100 μm. The outstanding feature is the bendability, by using the bendability, the display device can be bent or folded, thus bringing convenience to people's carrying or use. Even so, due to the brittleness and strength of the glass itself, it is easy to shatter and sputter after being broken, which is harmful to the human body. Therefore, pure UTG cannot be applied to the outermost layer of the display device alone. [0003] Currently, the foldable display covers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C23/00
CPCC03C23/0075
Inventor 郑建军俞良汪晓玲杨夫舜齐彦杰任伟
Owner 芜湖东信光电科技有限公司