Tempering equipment and tempering method for display cover glass

A technology for cover glass and display screen, which is applied in the direction of glass tempering, glass manufacturing equipment, manufacturing tools, etc. To meet application requirements and other issues, to achieve the effect of high yield, improved physical properties, and high degree of automation

Active Publication Date: 2018-06-05
QINHUANGDAO GLASS IND RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Along with the expansion of the application field of electronic display products and the improvement of application performance, the existing chemical tempering method (such as the use of KNO in the patent application with publication number CN1491911A 3 and CsNO 3 The glass is chemically tempered by mixed molten salt) The display cover glass obtained can no longer meet the application requirements
[0005] There are two other manufacturing methods of fireproof glass (the patent application number is 01124523.9 and the patent application with publication number CN101219854A) adopts chemical toughening first, then adopts physical toughening to improve the performance of fireproof glass, but the surface of fireproof glass obtained by this method The compressive stress value is 500MPa, while the current compressive stress value of the display cover glass is required to be above 800MPa, which obviously cannot meet the requirements of the display cover glass for resistance to falling and damage

Method used

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  • Tempering equipment and tempering method for display cover glass
  • Tempering equipment and tempering method for display cover glass
  • Tempering equipment and tempering method for display cover glass

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Embodiment 1, the size is 130 * 65 * 0.7mm (length * wide * thick) the toughening of display screen cover glass

[0052] According to the tempering method of display screen cover glass of the present invention, ordinary glass (ordinary glass is selected from aluminosilicate flat glass produced by float process) of 130*65*0.7mm (length*width*thick) is tempered. Among them, the temperature of primary chemical tempering is 450°C, and the exchange time is 1.5h; the temperature of secondary chemical tempering is 600°C, and the exchange time is 11h; the temperature of primary physical tempering is 580°C, and the exchange time is 6s; The cooling air pressure is 650Pa and the flow rate is 100Nm 3 / h, the cooling air temperature is 15°C, and the cooling time is 10s.

Embodiment 2

[0053] Embodiment 2, the size is 120 * 50 * 0.7mm (length * width * thick) the toughening of display screen cover glass

[0054] According to the tempering method of display screen cover glass of the present invention, ordinary glass (ordinary glass is selected from aluminosilicate flat glass produced by float process) of 120*50*0.7mm (length*width*thick) is tempered. Among them, the temperature of primary chemical tempering is 400°C, and the exchange time is 3h; the temperature of secondary chemical tempering is 450°C, and the exchange time is 5h; the temperature of primary physical tempering is 750°C, and the exchange time is 2s; The cooling air pressure is 510Pa and the flow rate is 180Nm 3 / h, the cooling air temperature is 25°C, and the cooling time is 15s.

Embodiment 3

[0055] Embodiment 3, the size is 120 * 60 * 0.55mm (length * width * thick) the toughening of display screen cover glass

[0056] According to the tempering method of display screen cover glass of the present invention, ordinary glass (ordinary glass is selected from aluminosilicate flat glass produced by float process) of 120 × 60 × 0.55mm (length × width × thickness) is tempered. Among them, the temperature of primary chemical tempering is 380°C, and the exchange time is 2h; the temperature of secondary chemical tempering is 420°C, and the exchange time is 5h; the temperature of primary physical tempering is 600°C, and the exchange time is 4s; The cooling air pressure is 300Pa and the flow rate is 130Nm 3 / h, the cooling air temperature is 45°C, and the cooling time is 15s.

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Abstract

The invention discloses a tempering equipment and a tempering method for display screen cover glass. The tempering equipment includes a first-level chemical toughening zone, a second-level chemical toughening zone, a first-level physical toughening zone and a rapid cooling zone connected in sequence; the tempering method includes First-level chemical toughening, second-level chemical toughening, first-level physical toughening and rapid cooling. The tempering equipment and tempering method for the display screen cover glass of the present invention adopt two-stage chemical tempering and one-stage physical tempering, so that the physical properties such as surface stress, compressive strength, and surface Vickers hardness of the display screen cover glass are greatly improved, satisfying The use requirements of the cover glass are met; and the three areas are isolated from each other and do not interfere with each other. The parameters of the three areas can be adjusted at the same time according to different needs to meet the use requirements of the display cover glass for different occasions and requirements.

Description

technical field [0001] The invention relates to the technical field of special glass deep processing, in particular to a tempering device and a tempering method for display screen cover glass. Background technique [0002] The development of network and wireless communication technology and the rapid popularization of its products, and the rapid advancement of the global digitalization process have contributed to the vigorous rise of information technology (IT) and the information industry, and have also created a broad market and good development for imaging and display technology. opportunity. Various information display technologies have become the focus of research and development and industrial investment. Therefore, the cover glass for display screen has become an indispensable component in electronic display products. [0003] In recent years, thanks to the vigorous development of the mobile terminal market in the information industry, the market demand for display ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C21/00C03B27/04
Inventor 陈福续芯如赵恩录张文玲冯建业贾立丹周琳琳刘丰
Owner QINHUANGDAO GLASS IND RES & DESIGN INST
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