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Cover glass for flat panel displays

A technology for flat panel display and protective glass, which is applied in glass forming, glass tempering, glass forming, etc. It can solve the problems of strength reduction and achieve the effects of suppressing the generation of defects, preventing spontaneous damage, and reducing the production rate

Inactive Publication Date: 2012-07-18
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the thickness of the glass is reduced, the strength will decrease. In order to solve this problem, it is currently necessary to use a glass strengthened by a chemical strengthening method (for example, Patent Documents 1 and 2)

Method used

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  • Cover glass for flat panel displays
  • Cover glass for flat panel displays
  • Cover glass for flat panel displays

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0100] Hereinafter, the present invention will be described with reference to Examples, but the present invention is not limited to these Examples.

[0101] Glass manufactured by the fusion method [composition (mol %): SiO] was measured using optical microscope photographs of 38 samples 2 66.6%, Al 2 O 3 10.8%, Na 2 O 13.2%, K 2 The particle size (diameter) of defects in O 2.4%, MgO 6.2%, CaO 0.6%], and the frequency in each particle size range was calculated. The particle size of the defect was determined by comparing the length of the largest portion with the photograph of the objective micrometer. The results are shown in figure 1 bar chart.

[0102] Moreover, the generation rate of cracks in the said glass was measured. Here, the occurrence rate of cracks is measured by visually determining whether or not cracks have occurred in the micrograph. The results are shown in figure 1 line chart.

[0103] like figure 1 As shown in the line graph of , when the particl...

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PUM

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Abstract

A cover glass for flat panel displays, which is difficult to be spontaneously destroyed is provided. The present invention relates to a cover glass for flat panel displays, obtained by chemically strengthening a glass obtained by a fusion process, in which the glass before chemical strengthening does not contain defects having a particle size of 40 [mu]m or more, and the cover glass has an internal tensile stress of 30 MPa or more and a thickness of 1.5 mm or less.

Description

technical field [0001] The present invention relates to a cover glass for flat panel displays and a method for producing the same. Background technique [0002] In recent years, flat panel displays (hereinafter also referred to as FPDs) have adopted a configuration in which a thin plate-shaped glass wider than the image display portion is provided on the front of the display to eliminate the convex portion of the frame and improve the appearance. [0003] In order to install the glass on the front of the display, a method of separating the cover glass and the FPD panel is used. However, in this method, the reflection between the glass and the air layer impairs the appearance. Therefore, it is preferable to use a resin or an adhesive sheet to separate the glass from the FPD panel. The panels are bonded to reduce reflections at the interface. [0004] In recent years, large-sized TVs are preferred as home TVs. However, when the method of directly bonding the FPD panel and the...

Claims

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Application Information

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IPC IPC(8): C03B17/06C03B27/03C03C21/00G02F1/1333
CPCC03C3/087C03C3/085C03C21/00G02F1/13
Inventor 小野和孝
Owner ASAHI GLASS CO LTD
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