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Glass substrate chamfering method and device

A glass substrate and chamfering technology, applied in glass cutting devices, glass production, glass manufacturing equipment, etc., can solve the problems of end face cracking, unusability, and residual stress problems of glass substrates, so as to prevent cracks and defects, The effect of improving productivity

Inactive Publication Date: 2012-05-09
ASAHI GLASS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In particular, there is a problem that when these glass substrates are transported or positioned during the production process of flat panel displays, cracks or defects occur from the end faces of the glass substrates due to impact or mechanical external force.
Therefore, this method cannot be used in R chamfering of glass substrates
In addition, this method does not consider the problem of residual stress at all, and does not disclose its solution

Method used

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  • Glass substrate chamfering method and device
  • Glass substrate chamfering method and device
  • Glass substrate chamfering method and device

Examples

Experimental program
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Effect test

Embodiment

[0071] Below, the present invention is further described in detail through examples.

[0072] like figure 1 The chamfering test of the glass substrate of this Example was implemented as shown. As the glass substrate 1 for a test, the glass substrate for liquid crystal displays cut|disconnected by the wheel cutter was prepared on the following conditions.

[0073] A: Length 12cm, width 2.5cm, thickness 0.7mm

[0074] B: length 12cm, width 2.5cm, thickness 0.5mm

[0075] C: length 12cm, width 2.5cm, thickness 0.5mm

[0076] D: length 12cm, width 2.5cm, thickness 0.5mm

[0077] E: length 12cm, width 2.5cm, thickness 0.5mm

[0078] F: length 12cm, width 2.5cm, thickness 0.5mm

[0079] G: length 5cm, width 0.5cm, thickness 0.3mm

[0080] Here, for the C and F glass substrates, a #500 grinding wheel was further used to chamfer the end face to a radius of curvature of about 0.25 mm. In addition, the glass substrates of A to F are glass substrates for liquid crystal displays (...

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Abstract

The invention aims to provide a novel glass substrate chamfering method and a device thereof. The method and the device can be used to raise bending strength and impact strength of a transverse plane of the glass substrate, prevent rupture and defects of the glass substrate during the manufacturing process of the glass substrate and improve productivity. The glass substrate chamfering method is a chamfering method by the utilization of laser lines and is characterized in that the laser lines irradiate the transverse plane of the glass substrate and cool gas is blown on the laser-line irradiation portion of the glass substrate.

Description

technical field [0001] The present invention relates to a glass substrate and a glass substrate for display, especially a glass substrate for flat panel display and a chamfering method and device for a glass substrate used as a photomask. Background technique [0002] At present, as glass substrates for displays, especially glass substrates for flat panel displays such as liquid crystal displays, plasma displays, organic EL displays, and field emission displays, as well as window glass for buildings such as houses and buildings, or for automobiles, railways, and airplanes In fact, glass substrates are widely used for opening parts in many fields, such as window glass for vehicles such as ships and transport aircraft. Such a glass substrate is formed from molten glass using a float method, a fusion method, or a down-draw method. In addition, it is obtained by down-drawing a glass plate after primary molding. [0003] In particular, there is a problem that, when these glass ...

Claims

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Application Information

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IPC IPC(8): C03B33/08
CPCY02P40/57
Inventor 黑岩裕伊贺元一伊藤节郎深泽宁司渡边满
Owner ASAHI GLASS CO LTD
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