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Microcrystalline glass and terminal

A glass-ceramic and terminal technology, applied in the field of glass preparation, can solve the problems of small fragments that cannot be used for cover plates, increased tensile stress, etc.

Active Publication Date: 2022-01-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ordinary aluminosilicate glass used in traditional mobile phone glass covers is strengthened by secondary ion exchange to achieve improved drop resistance performance. Continuous lifting will increase the tensile stress synchronously, resulting in the fragments produced by the broken glass during the drop process being too small to be applied to the cover plate

Method used

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  • Microcrystalline glass and terminal
  • Microcrystalline glass and terminal
  • Microcrystalline glass and terminal

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preparation example Construction

[0087] Correspondingly, the embodiment of the present application also provides a method for preparing the above-mentioned glass-ceramics, including:

[0088] The raw materials corresponding to each component are mixed according to the proportion, and after melting, molding and annealing, the raw glass material is obtained, and then the raw glass material is crystallized by heat treatment, and the glass-ceramic is obtained.

[0089] In the embodiment of the present application, the melting temperature may be 1550°C-1650°C.

[0090] In the embodiment of the present application, the annealing temperature may be 450°C-600°C.

[0091] In the embodiment of the present application, the temperature of the heat treatment may be 650°C-750°C, and the time may be 6h-24h. The heat treatment is a one-step or two-step method, and the heat treatment can be completed by a one-step method or by a two-step method. The specific process of one-step heat treatment can be that the sample is heate...

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Abstract

The invention provides microcrystalline glass. The microcrystalline glass comprises the following components by mole percentage: 56-60% of SiO2, 17-22% of Al2O3, 8-12% of Li2O, 6-10% of Na2O, 0-6% of ZnO, 0-4% of MgO and 1-2.5% of ZrO2, wherein the sum of Li2O and Na2O is greater than or equal to 16% and less than or equal to 20%, the ratio of Li2O / Na2O is greater than or equal to 0.8 and less than or equal to 1.5, and the sum of Al2O3+0.7(ZnO+MgO)-(Li2O+Na2O) is greater than or equal to 0 and less than or equal to 6%. The component microcrystalline glass can be subjected to efficient ion exchange to obtain high hardness and high drop resistance, has high transmittance, and can meet the application requirements of large-size and ultrathin terminal glass cover plates. An embodiment of the invention further provides a terminal adopting the microcrystalline glass.

Description

technical field [0001] The present application relates to the technical field of glass preparation, in particular to a glass-ceramic and a terminal. Background technique [0002] At present, the demand for large-size and ultra-thin screens of electronic products such as smartphones and tablet computers has become increasingly prominent, and higher requirements have been put forward for the drop resistance of the glass cover. Ordinary aluminosilicate glass used in traditional mobile phone glass covers is strengthened by secondary ion exchange to achieve improved drop resistance performance. The continuous lifting will make the tensile stress increase synchronously, resulting in the fragments produced by the broken glass during the drop process being too small to be applied to the cover plate. Therefore, it is necessary to develop new glasses with excellent drop resistance to meet the application requirements of large-sized and ultra-thin cover plates. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/12C03C21/00C03B32/02
CPCC03C10/0027C03C21/002C03B32/02
Inventor 许文彬黄义宏刘超郭云岚陈杰杰王慧娟李铭陈石峰
Owner HUAWEI TECH CO LTD