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Glass substrate for flat panel glass

A glass substrate, flat glass technology, applied in glass production, coating, gas discharge tube/container, etc., can solve the problems of PDP quality reduction, screen brightness reduction, etc., to prevent Ag colloid color development, good damage resistance. Effect

Inactive Publication Date: 2012-02-15
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the silver paste is fired to form the silver electrode, the glass substrate appears yellow, and there is a problem that the quality of the PDP color display is lowered. Specifically, there are screens that display white with yellow around the silver electrode and display blue. The problem of reduced brightness

Method used

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  • Glass substrate for flat panel glass
  • Glass substrate for flat panel glass
  • Glass substrate for flat panel glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] use figure 2 The experimental setup is shown. figure 2 is a cross-sectional view of a large tube furnace used in Examples.

[0146] Specifically, a quartz tube 12 is installed in a large-scale tube furnace 11 capable of adjusting the temperature, a glass substrate 13 (10 cm square) for flat glass with a thickness of 2.8 mm is placed in the quartz tube 12, and the large-scale tube furnace 11 is heated to 600 ℃. Among them, "glass substrate for flat glass" is expressed as SiO by mass percentage of oxide standard 2 : 58.6, Al 2 o 3 : 6.9, MgO: 1.9, CaO: 4.8, SrO: 6.9, BaO: 7.9, Na 2 O: 4.0, K 2 O: 6.1, ZrO 2 : 2.8, Fe 2 o 3 : Glass with a composition of 0.09. In addition, the glass transition temperature of the said glass is 600 degreeC.

[0147] Then, the sodium tetraborate decahydrate reagent 15 added to the alumina boat 14 was vaporized by locally heating it to 850° C., and the vaporized substance was sprayed from the end of the quartz tube in the direction...

Embodiment 2

[0151] In addition to making SO 2 The gas injection volume is 0.4L / m 2 Except that, the glass substrate for plate glass with a protective film was manufactured by the method similar to Example 1.

Embodiment 3

[0153] In addition to making SO 2 The gas injection volume is 1.0L / m 2 Except that, the glass substrate for plate glass with a protective film was manufactured by the method similar to Example 1.

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Abstract

A process for producing a glass substrate for flat panel glasses which retains satisfactory marring resistance and can be prevented from suffering colloidal-silver coloring; and a glass substrate for flat panel glasses which is obtained by the process. The process produces a glass substrate for flat panel glasses by the float method. It comprises a forming step in which a molten glass is formed on molten tin into a glass substrate and an annealing step in which the glass substrate formed in the forming step is annealed. The process further comprises a first supply step in which an inorganic substance containing an alkali metal is blown against that surface of the glass substrate which was in contact with the molten tin and a second supply step in which after the first supply step, SO2 gas is blown against that surface of the glass substrate which was in contact with the molten tin.

Description

[0001] This application is a divisional application, the application number of the original application is "200780025845.4 (PCT / JP2007 / 062914)", the application date is June 27, 2007, and the title of the invention is "Manufacturing method of glass substrate for flat glass". technical field [0002] This invention relates to the manufacturing method of the glass substrate for plate glass. Background technique [0003] In recent years, flat panel displays, particularly plasma display panels (hereinafter referred to as "PDPs"), which are a type of thin flat gas discharge display panels, have attracted attention as thin and large flat color display devices. [0004] The PDP is divided into cells by a front glass substrate, a rear glass substrate, and partition walls, and plasma discharges are generated in the cells to make phosphor layers on the inner walls of the cells emit light to form images. [0005] In general, for the front glass substrate and rear glass substrate of a P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/078C03C3/085C03C3/087
CPCC03B18/14C03C3/087C03C17/22C03C21/007C03C2217/28C03C2217/283C03C2218/355H01J9/241H01J2211/34Y02P40/57C03C3/078C03C3/083H01J11/34
Inventor 竹田谕司谷井史朗东诚二秋山良司
Owner AGC INC
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