Chemically strengthened glass plate, cover glass, chemically strengthened glass with touch sensor, and display device

A touch sensor, tempered glass technology, used in the identification of devices, instruments, transportation and packaging, etc.

Inactive Publication Date: 2015-02-11
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Soda-lime glass is inexpensive and has the feature that the surface compressive stress S of the compressive stress layer formed on the glass surface by chemical strengthening can be made to be 550 MPa or more, but it is difficult to reduce the thickness DOL of the compressive stress layer (hereinafter, sometimes referred to as Depth of compressive stress layer) is 20 μm or more

Method used

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  • Chemically strengthened glass plate, cover glass, chemically strengthened glass with touch sensor, and display device
  • Chemically strengthened glass plate, cover glass, chemically strengthened glass with touch sensor, and display device
  • Chemically strengthened glass plate, cover glass, chemically strengthened glass with touch sensor, and display device

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0182] Figure 1 ~ Figure 3 It is explanatory drawing of the manufacturing method of the glass plate which concerns on 1st Embodiment of this invention.

[0183] The glass pane 10 has a front main face 11 and a rear main face 12 as well as an end face 13 adjoining the two main faces 11 , 12 . The two main surfaces 11, 12 are flat surfaces parallel to each other.

[0184] The end face 13 is composed of a flat portion 14 perpendicular to the two main faces 11 , 12 and chamfered portions 15 , 16 formed between the respective main faces 11 , 12 and the flat portion 14 . The flat portion 14 may be an original cut surface obtained by cutting a sheet glass having an area larger than that of the glass plate 10 , or may be a processed surface obtained by processing a cut surface.

[0185] For example, four chamfered parts 15 and 16 may be provided corresponding to the four sides of the rectangular main surfaces 11 and 12, or only one may be provided, and the number of chamfered parts...

no. 2 approach

[0202] This embodiment relates to the manufacturing method of the glass plate which has a chamfered part.

[0203] Figure 4 ~ Figure 6 It is explanatory drawing of the manufacturing method of the glass plate of 2nd Embodiment of this invention. Figure 4 A laminate 130 including a glass plate 110 as an original plate and a brush 140 for polishing the outer edge of the laminate 130 are shown. Figure 5 The state in which the outer edge portion of the laminated body 130 is polished by the brush 140 is shown enlarged. Figure 6 In , the glass plate 110A after brush grinding is indicated by a solid line, and the glass plate 110 before brush grinding is indicated by a two-dot chain line.

[0204] The method of manufacturing a glass plate includes a lamination step of producing a laminated body 130 by interposing spacers 120 between glass plates 110 , and a polishing step of polishing the outer edge of the laminated body 130 with a brush 140 . In addition, the manufacturing meth...

no. 3 approach

[0222] This embodiment relates to the manufacturing method of the glass plate which has a chamfered part. In this embodiment, before producing a laminated body, the process of grinding the outer edge part of a glass plate is further included.

[0223] Figure 7 ~ Figure 9 It is explanatory drawing of the manufacturing method of the glass plate of 3rd Embodiment of this invention. Figure 7 A glass plate 110 as an original plate and a rotating grindstone 240 for grinding the outer edge of the glass plate 110 are shown. Figure 8 The magnification shows the use of the brush 140 (reference Figure 4 ) A state in which the outer edge portion of the laminated body 130B including the glass plate 110B ground by the rotary grindstone 240 is ground. Figure 9 In , the glass plate 110C after brush grinding is indicated by a solid line, and the glass plate 110B before brush grinding is indicated by a dashed-two dotted line.

[0224] The method of manufacturing a glass plate includes ...

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Abstract

A chemically strengthened glass plate which has front and back main surfaces and edge surfaces between the front and back main surfaces, has undergone a chemical strengthening treatment, and is approximately rectangular and which has a surface compression stress of 800 MPa or greater and in which the internal tensile stress layer has a tensile stress of 42 MPa or less.

Description

technical field [0001] The present invention relates to a chemically strengthened glass plate suitable for cover glass and the like of display devices such as mobile devices such as mobile phones, PDAs, and tablet PCs, touch panels, and large thin TVs such as large LCD TVs, and display devices such as in-vehicle instrumentation devices. . Background technique [0002] In recent years, mobile devices such as mobile phones, PDAs, and tablet PCs, touch panels, and display devices such as liquid crystal televisions have increasingly used cover glasses to protect displays and improve appearance. In addition, surface processing such as forming a film that has functions such as antireflection, impact damage prevention, electromagnetic wave shielding, near infrared shielding, and color tone correction may be performed on the cover glass of a flat-screen TV such as an LCD TV. [0003] Such a display device is required to be lightweight and thin in order to reduce the difference caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C21/00C03C3/083C03C3/085C03C3/087G09F9/00
CPCC03C3/083C03C3/085C03C3/087C03C15/00C03C21/002C03C2201/40C03C2201/50C03C2201/54Y10T428/24777
Inventor 石丸政行大川博之秋叶周作泽村茂辉小野和孝中岛哲也鹿岛出小林裕介村山优山本文
Owner ASAHI GLASS CO LTD
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