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Flexible composite glass and preparation method thereof

A composite glass and flexible glass technology, applied in coating and other directions, can solve the problems of inability to realize automatic production, high production cost, and many manual participation, and achieve the effect of realizing automatic mass production, reducing production costs, and improving product yield.

Active Publication Date: 2021-05-14
河北光兴半导体技术有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology adopts the process method of UTG+adhesive (OCA for short)+flexible coating (PET for short)+OCA+HC to realize the production and application of the flexible cover plate, but there is a lot of manual participation, and due to the complicated process, the PET and UTG, PET and HC are connected through OCA, the yield rate is low, and automatic production cannot be realized, which leads to high production costs and cannot form mass production. It is also a key factor that restricts the high price of folding screens and cannot be popularized.

Method used

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  • Flexible composite glass and preparation method thereof
  • Flexible composite glass and preparation method thereof
  • Flexible composite glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The flexible glass substrate is taken out by automatic equipment and sent to the first coating machine to prepare the first coating machine for loading. The thickness of the flexible glass substrate is 30 μm. The delivered flexible glass substrate is placed on the first coating machine by a three-axis manipulator or a robot with a manipulator arm for flexible film slurry coating. The composition of the flexible film slurry is: polyimide, polyethylene terephthalate, polypropylene film and dimethylacetamide, and the viscosity at 24°C is 9000cps. The first coating machine chooses the mechanical structure suitable for the flow operation of the production line, and the coating form of the first coating machine is slit coating. After the coating of the flexible film slurry is finished, the first coater is unloaded using the same equipment as the first coater. The flexible glass substrate coated with the flexible film slurry is transported to the first pre-curing furnace for...

Embodiment 2

[0082] The flexible composite glass A2 was prepared by the same method as in Example 1, except that the viscosity of the flexible film slurry at 24°C was 9000cps, and the viscosity of the hardened film slurry at 24°C was 6000cps. The performance tests of the prepared flexible composite glass product A2, flexible film and hardened film are carried out, and the results are listed in Table 1.

Embodiment 3

[0084] The flexible composite glass A3 was prepared by the same method as in Example 1, except that the viscosity of the flexible film slurry at 24°C was 6000cps, and the viscosity of the hardened film slurry at 24°C was 9000cps. The performance tests of the prepared flexible composite glass product A3, flexible film and hardened film are carried out, and the results are listed in Table 1.

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Abstract

The invention relates to a method for preparing flexible composite glass, and the method comprises the following steps: S1, coating a flexible glass substrate with flexible film slurry on a coating machine to form a first precursor; S2, carrying out first pre-curing on the first precursor in a pre-curing furnace, and then carrying out first curing in a curing furnace to form a second precursor coated with a flexible film layer; S3, coating the second precursor with the hardened film slurry on the coating machine to form a third precursor; and S4, carrying out second pre-curing on the third precursor in the pre-curing furnace, and then carrying out second curing in the curing furnace to form the flexible composite glass sequentially coated with a flexible film layer and a hardened film layer. According to the method disclosed by the invention, the flexible film slurry and the hardened film slurry are directly and sequentially coated and cured on the flexible glass substrate, so that the step of adding an adhesive is omitted, the process is simplified, and the production cost is reduced; glass grabbing, conveying, carrying and the like are completed through automatic equipment, batch production is achieved, and the yield is effectively increased.

Description

technical field [0001] The disclosure relates to the field of composite glass production, in particular, to a flexible composite glass and a preparation method thereof. Background technique [0002] As folding screens become more and more popular, flexible covers have become a key factor restricting the development of folding screens. At present, there are two technical solutions for flexible cover plates. One is the production process of transparent polyimide (referred to as CPI) + hard coating (referred to as HC), which is relatively mature at present. The other directly adopts foldable flexible glass (UTG for short). Both have different advantages and disadvantages. CPI is not as good as UTG in terms of hardness, anti-aging, scratch resistance, and transparency. UTG has better stiffness and dimensional stability during repeated bending, which can effectively reduce creases in the folding area. . CPI has good bending performance and high yield. [0003] However, with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/3405C03C2218/114
Inventor 李青李赫然崔海舰陈兵哲集建昌闫冬成胡恒广
Owner 河北光兴半导体技术有限公司
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