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Glass substrate for display and sorting method thereof

A glass substrate and display technology, applied in sorting, cold cathode tubes, etc., can solve problems such as particle adhesion, insulation damage, glass substrates are easy to attract dust, etc.

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

AI Technical Summary

Problems solved by technology

In the manufacturing process of displays, various patterns including microscopic electrodes are formed on the glass substrate, but the electrification of the glass substrate destroys the insulating properties of the film forming the electrodes.
In addition, the charged glass substrate tends to attract dust, causing the problem of so-called attached particles

Method used

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  • Glass substrate for display and sorting method thereof
  • Glass substrate for display and sorting method thereof
  • Glass substrate for display and sorting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] As a glass substrate, a high strain point glass (manufactured by Asahi Glass Co., Ltd. [trade name: PD200]) was used as a raw material, and a glass ribbon having a plate thickness of 2.8 mm was formed by a float process. During float forming, by changing the forming conditions such as the forming temperature and forming time, a glass plate having three levels of waviness was formed and used as a glass substrate (Example 1-Example 3).

[0049] As a glass substrate for comparison, substrates from the same lot as the glass substrate of Example 3 were ground to a removal thickness of 10 μm using an Oscar grinder to prepare a glass substrate with a smooth surface to be evaluated.

[0050] Ten glass substrates produced under the same conditions were prepared, and the contact peeling electrification and waviness of the top surface in the float process were evaluated. The glass substrate was cut out to a size of a rectangle of 550 mm×650 mm, which is the size used for charging ...

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Abstract

The invention provides a glass substrate for a display and a sorting method thereof, wherein the glass substrate can inhibit electrification caused by contact peeling. The invention provides a glass substrate 1 with the thickness of 0.3-6mm for a display, wherein the glass substrate is characterized in that the average value of WCA (center line of filtered waviness) measured by a touch-pin-type roughometer is 0.03-0.5mu m, and a phase compensation-type 2RC band pass filter with the set measured length of 200mm and the set cut-off value of 0.8-25mm is utilized for the touch-pin-type surface roughometer.

Description

technical field [0001] The present invention relates to a glass substrate for a display, in particular to a plasma display (PDP), a TFT liquid crystal display (TFT-LCD), an STN liquid crystal display (STN-LCD), a plasma assist liquid crystal display (PALC), an electroluminescent Glass substrates for flat panel displays (generic term for flat displays) such as display (EL) and field emission display (FED). [0002] In flat panel displays, two glass substrates are usually used, which are called the front panel and the back panel, and in TFT liquid crystal displays, these two glass substrates are called the array side substrate and the color filter side substrate . The present invention relates to these glass substrates. Background technique [0003] In a flat panel display, two glass substrates are usually used, and a light emitting mechanism and a light transmission control mechanism are formed between the two glass substrates. Among the glasses used as glass substrates, t...

Claims

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Application Information

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IPC IPC(8): H01J17/49B07C5/34
Inventor 加濑准一郎深泽宁司中尾泰昌
Owner ASAHI GLASS CO LTD