Ultrathin unequal-thickness glass as well as production method and application thereof

A production method and ultra-thin glass technology, applied in the field of display screens, can solve problems such as wrinkles and excessive bending times

Active Publication Date: 2021-06-11
芜湖东信光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an ultra-thin non-equal thickness glass, which has excellent bending performance, high impact resistance and scratch resistance, and solves the problem of wrinkles caused by excessive bending times of existing products

Method used

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  • Ultrathin unequal-thickness glass as well as production method and application thereof
  • Ultrathin unequal-thickness glass as well as production method and application thereof
  • Ultrathin unequal-thickness glass as well as production method and application thereof

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Embodiment 1

[0039] A method for producing ultra-thin non-equal-thickness glass, comprising the following steps:

[0040] 1) Acid etching the folding area of ​​ultra-thin glass to reduce the thickness of the folding area:

[0041] The size of the ultra-thin glass described in the patent of the present invention is between 70×70-200×200mm, and the thickness is 150-200μm. The 20-40mm wide area in the middle of one surface is the folding area. Except for this folding area, other areas of this surface It is a non-folding area, and the top view is as follows image 3 As shown; the other surface of the ultra-thin glass is the back, and the back and the non-folding area are covered with polyurethane UV film, and then the folding area is sprayed and etched. The temperature of the acid etching process is controlled at 30-40 ° C. The rate is controlled at 1-2μm / min, the spray flow rate is 400-600L / min, and after the first acid etching amount is 10-15μm, use 200-300mJ / cm 2 Ultraviolet light irradiat...

Embodiment 2

[0048] A method for producing ultra-thin non-equal-thickness glass, comprising the following steps:

[0049] 1) Acid etching the folding area of ​​ultra-thin glass to reduce the thickness of the folding area:

[0050] The size of the ultra-thin glass described in the patent of the present invention is between 100×100 mm and the thickness is 150 μm. The 40 mm wide area in the middle of one surface is a folding area. Except for this folding area, other areas of this surface are non-folding areas. The top view is as follows: image 3 As shown; the other surface of the ultra-thin glass is the back, and the back and the non-folding area are covered with polyurethane UV film, and then the folding area is sprayed and etched. The temperature of the acid etching process is controlled at 35 ° C, and the etching rate is controlled At 1-2μm / min, the spray flow rate is 500L / min, and after the first acid etching amount is 15μm, use 200-300mJ / cm 2 Ultraviolet light irradiation, gently peelin...

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Abstract

The invention provides ultrathin unequal-thickness glass as well as a production method and application thereof. The production method includes the steps that covering films on the two sides of the glass are protected through protective films, the middle of the glass is exposed and not covered with the covering films, then the covered glass is subjected to spraying acid etching treatment, and in order to achieve the arc-shaped groove effect, the mode of segmented etching and repeated acid-proof film covering is adopted, so that different groove depths can be controlled, and the groove depth is ensured to be uniform. Meanwhile, in order to ensure that the folding area and the non-folding area have a proper chemical toughening effect, the folding area and the non-folding area are respectively protected by adopting a film coating mode, so that a uniform stress layer and a uniform stress value are obtained, excellent bending performance and strong impact resistance of the UTG are ensured to be combined, chemical toughening treatment is performed in the bending area, and the whole foldable UTG product has no chromatic aberration in front view.

Description

technical field [0001] The invention belongs to the field of display screens, and in particular relates to an ultra-thin non-equal-thickness glass and its production method and application. Background technique [0002] With the upgrading of electronic products, people's pursuit of the glass cover tends to be thinner and lighter. The emergence of folding screens has attracted widespread attention from all walks of life. Since 2019, well-known electronic display manufacturers such as Samsung and Huawei have successively launched folding screens. At the same time, the crease problem of polyimide (CPI) also appears with the increase of the number of folds; ultra-thin glass (Ultra-Thin Glass, UTG) refers to glass thickness less than 100μm and flexible Glass. In 2020, the Galaxy series of Samsung Electronics will use ultra-thin glass for the first time in the mobile phone cover. Due to its small size, thin thickness, good resilience, and no crease after bending 200,000 times, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C15/00C03C17/34C03C21/00
CPCC03C15/00C03C17/3417C03C21/002C03C2218/156Y02P40/57
Inventor 郑建军杨夫舜徐炯岳伟陈兴齐彦杰
Owner 芜湖东信光电科技有限公司
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