Glass ceramic and reinforced glass ceramic for front cover of 5G (fifth generation) mobile communication terminal

A technology of glass-ceramics and mobile terminals, which is applied in the field of glass applications, can solve the problems that cannot meet the needs of mobile terminals, cannot meet the needs of 5G mobile terminal front cover materials, low strength and hardness of glass-ceramics, and achieve high visible light The effect of transmittance and mechanical properties, high visible light transmittance, and high hardness

Inactive Publication Date: 2018-08-17
GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength and hardness of the glass-ceramics invented by this patent are too low to meet the needs of mobile terminals
[0007] The glass-ceramic materials disclosed in the above patents cannot meet the requirements of 5G mobile terminals for front cover materials in terms of flexural strength, surface hardness, and ion diffusion depth.

Method used

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  • Glass ceramic and reinforced glass ceramic for front cover of 5G (fifth generation) mobile communication terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A kind of glass ceramics, in terms of mass percentage of oxide, the composition of the glass ceramics is SiO 2 50%, Al 2 o 3 15.5%, Na 2 O 14%, K 2 O 2%, MgO 13.2%, ZrO 2 2%, P 2 o 5 4.3%. The glass-ceramic of this embodiment can be used as a high-transparency and high-strength basic glass-ceramic for the front cover of a 5G communication mobile terminal. The light transmittance of a sample with a thickness of 1mm at a wavelength of 550nm is 92%, the microhardness is 5.7GPa, the four-point bending strength is 180Mpa, and the fracture toughness is K IC Up to 0.6MPa·mm 0.5 .

Embodiment 2

[0040] A kind of glass ceramics, in terms of mass percentage of oxide, the composition of the glass ceramics is SiO 2 48.2%, Al 2 o 3 20.6%, Na 2 O 13.5%, K 2 O 1%, MgO 7.5%, ZrO 2 2%, Li 2 O 3.7%, P 2 o 5 1.5%, Sb 2 o 3 1%, RbO 2 1%. The glass-ceramic of this embodiment can be used as a high-transparency and high-strength basic glass-ceramic for the front cover of a 5G communication mobile terminal. The light transmittance of a 1mm-thick sample at a wavelength of 550nm is 92%, the microhardness is 5.9GPa, the four-point bending strength is 160Mpa, and the fracture toughness is K IC Up to 0.7MPa·mm 0.5 .

Embodiment 3

[0042] A kind of glass ceramics, in terms of mass percentage of oxide, the composition of the glass ceramics is SiO 2 55%, Al 2 o 3 15%, Na 2 O 13%, K 2 O 3%, Li 2 O 3%, MgO 7%, P 2 o 5 3%, Sb 2 o 3 1%. The glass-ceramic in this example is a high-transmittance and high-strength basic glass-ceramic for the front cover of a 5G communication mobile terminal. Its 1mm sample has a transmittance of 91.5% at 550nm, a microhardness of 5.7GPa, a four-point bending strength of 180Mpa, and a fracture toughness of K IC Up to 0.6MPa·mm 0.5 .

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Abstract

Disclosed is a glass ceramic for the front cover of a 5G mobile communication terminal. The glass ceramic is composed of, by weight percentage of oxides, 45-75% of SiO2, 10-25% of Al2O3, 8-20% of Na2O, 1-4% of K2O, 0-20% of MgO, 2-15% of ZrO2, 0-5% of Li2O, 0-10% of ZnO, 0-3% of Eu2O3, 0-5% of P2O5 and 0-3% of Sb2O3. The glass ceramic for the front cover of the 5G mobile communication terminal hasthe advantages of being high in strength, hardness and transmittance, resistant to impact and dropping and can meet the requirements of 5G communication on the performance of front cover material ofmobile terminals.

Description

technical field [0001] The invention belongs to the technical field of glass-ceramics, and relates to applications in 5G communication mobile terminals or other glass applications that require light transmittance, strength, and the like. Background technique [0002] Currently, the sales volume of large-screen mobile terminals exceeds that of small-screen mobile phones for the first time. For large-screen mobile phones, it is difficult to have both the hardness and impact resistance of the screen glass. While improving the anti-shatter performance, the anti-scratch performance is also a shortcoming. In addition, 5G mobile phones are expected to be put into commercial use in recent years. The transformation of 5G communication and the application of wireless charging put forward more stringent requirements for the front cover materials used in mobile terminals. [0003] Most smartphone screens on the market use high-alumina glass, which has improved mechanical properties co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/10
CPCC03C10/0018
Inventor 袁坚郑伟宏田培静彭志钢
Owner GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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