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Method for manufacturing foldable glass by laser direct writing micro-nano structure

A technology of micro-nano structure and laser direct writing, which is applied in the field of new glass materials, can solve the problems of large manpower and material resources, time cost, and difficulty in foldability, and achieve the effect of ensuring the folding strength

Pending Publication Date: 2022-07-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above prerequisites for achieving glass foldability are based on ultra-thin flexible glass, but it is difficult to achieve foldability of glass through thinning, which requires a lot of manpower, material resources and time costs, and subsequent cutting and processing A series of problems will arise during the processing

Method used

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  • Method for manufacturing foldable glass by laser direct writing micro-nano structure
  • Method for manufacturing foldable glass by laser direct writing micro-nano structure
  • Method for manufacturing foldable glass by laser direct writing micro-nano structure

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A method of laser direct writing micro-nano structure to fabricate foldable glass, such as figure 1 As shown, it is a schematic diagram of the process of laser micro-nano processing of foldable glass, which is prepared according to the following steps:

[0034] (1) Select the borosilicate glass to be processed, and its composition is 75% SiO 2 , 10% B 2 O 3 , 6%Na 2 O, 5% Al 2 O 3 , 2% BaO, 2% CaO, the size is 300mm×600mm, the thickness is 1mm, and the glass is completely cleaned;

[0035] (2) Place the glass on the three-dimensional sample stage;

[0036] (3) The wavelength of the ultraviolet laser for processing glass is 365nm, adjust the laser pulse width to 100ps, the pulse power to 10μJ, and adjust the objective lens and eyepiece to focus the laser on the starting position at the bottom of the glass;

[0037] (4) Design a "rectangular" laser processing path in the control computer ( image 3 , a) and time, and locate the initial and end positions of laser p...

Embodiment 2

[0044] A method of laser direct writing micro-nano structure to fabricate foldable glass, such as figure 1 As shown, it is a schematic diagram of the process of laser micro-nano processing of foldable glass, which is prepared according to the following steps:

[0045] (1) Select the germanate glass to be processed, and its composition is 15% Na 2 O, 85% GeO 2, the size is 325mm×525mm, the thickness is 2mm, and the glass is completely cleaned;

[0046] (2) Place the glass on the three-dimensional sample stage;

[0047] (3) The visible laser wavelength for processing glass is 532nm, continuous laser, and the output power is 5W. Adjust the objective lens and eyepiece to make the laser focus on the starting position at the bottom of the glass;

[0048] (4) Design a "circular" laser processing path in the control computer ( image 3 , b) and time, and locate the initial and end positions of laser processing;

[0049] (5) Open the laser baffle, make the laser focus on the glass...

Embodiment 3

[0055] A method of laser direct writing micro-nano structure to fabricate foldable glass, such as figure 1 As shown, it is a schematic diagram of the process of laser micro-nano processing of foldable glass, which is prepared according to the following steps:

[0056] (1) Select the tellurite glass to be processed, and its composition is 75% TeO 2 , 10%Na 2 O, 8% PbF 2 , 7% Bi 2 O 3 , the size is 275mm×325mm, the thickness is 0.2mm, and the glass is completely cleaned;

[0057] (2) Place the glass on the three-dimensional sample stage;

[0058] (3) The wavelength of the near-infrared laser for processing glass is 1064 nm, the laser pulse width is adjusted to 150 fs, the pulse power is 25 μJ, and the objective lens and eyepiece are adjusted to focus the laser on the starting position at the bottom of the glass;

[0059] (4) Design a "triangle" laser processing path in the control computer ( image 3 , c) and time, and locate the initial and end positions of laser process...

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Abstract

The invention relates to the technical field of new glass materials, in particular to a method for manufacturing foldable glass through a laser direct writing micro-nano structure, which comprises the following steps: selecting glass and cleaning; performing laser etching on the to-be-processed position of the glass according to a preset processing path by adopting laser to form a micro-nano structure; after laser processing, the glass is put into molten salt containing potassium ions, so that a stress layer and an ion exchange layer are generated on the surface of the glass and a laser processing interface; and taking out the glass from the fused salt, cooling and cleaning to obtain the foldable glass. According to the method, firstly, through laser processing, a micro-nano crack structure is generated in glass by utilizing instant high temperature generated by interaction of high-energy laser and the glass, and then a folding rotating shaft is formed; and then the glass subjected to laser processing is subjected to ion exchange chemical enhancement, a pressure stress layer and an ion exchange layer are generated in the glass, and high pressure stress on the surface of the glass and high stress on a micro-nano structure part are realized, so that the folding strength and the folding stability of the glass are ensured.

Description

Technical field [0001] The present invention relates to the technical field of new glass materials, and specifically relates to a method for manufacturing foldable glass using laser direct writing of micro-nano structures. Background technique [0002] In recent years, the electronics industry has developed rapidly, and various types of electronic products have emerged in endlessly. People's requirements for electronic products tend to be portable and functionally diversified. The emergence of folding display technology has attracted widespread attention from society. With the continuous development of electronic display technology, the performance requirements of display devices have increased accordingly, and flexibility and foldability have become important directions for the development of the display industry. [0003] Glass materials have good chemical stability, light transmittance and biocompatibility, and are widely used in the manufacturing of key components in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C15/00C03C21/00
CPCC03C15/00C03C21/002
Inventor 张继红崔楷敏邓芷盈谢俊韩建军
Owner WUHAN UNIV OF TECH
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