TFT-base plate glass

A glass and substrate technology, applied in the field of TFT substrate glass, can solve the problems of increasing glass density, difficult to discharge bubbles, lowering glass softening temperature, etc., and achieves the effects of good thermal shock resistance, good chemical corrosion resistance, and high softening temperature.

Active Publication Date: 2007-11-07
CHINA LUOYANG FLOAT GLASS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality requirements of this kind of glass used for displays are very strict. Defects such as tiny air bubbles, stones, ribs, surface pits, and surface scars will cause errors in the display and affect image quality.
However, the melting temperature of alkali-free glass is relatively high, the melting of raw materials is difficult, and the bubbles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example consists of the following components by weight, 61.08% silicon dioxide (SiO 2 ), 14.7% of aluminum oxide (Al 2 o 3 ), 9.54% boron trioxide (B 2 o 3 ), 0.96% zirconia (ZrO 2 ), 0.3% zinc oxide (ZnO), 1.88% magnesium oxide (MgO), 5.94% calcium oxide (CaO), 2.30% strontium oxide (SrO), 1% barium oxide (BaO), 0.5% Germanium dioxide (GeO 2 ), 0.3% vanadium pentoxide (V 2 o 5 ), 1.2% lanthanum trioxide (La 2 o 3 ) and 0.3% antimony trioxide (Sb 2 o 3 ).

Embodiment 2

[0035] This example consists of the following components by weight, 60.08% silicon dioxide (SiO 2 ), 15.0% aluminum oxide (Al 2 o 3 ), 10.54% of boron trioxide (B 2 o 3 ), 0.96% zirconia (ZrO 2 ), 0.3% zinc oxide (ZnO), 5.2% calcium oxide (CaO), 3.80% strontium oxide (SrO), 2.2% barium oxide (BaO), 0.5% germanium dioxide (GeO 2 ), 0.3% vanadium pentoxide (V 2 o 5 ), 1.2% lanthanum trioxide (La 2 o 3 ) and 0.2% antimony trioxide (Sb 2 o 3 ).

Embodiment 3

[0037] This example consists of the following components by weight, 57.50% silicon dioxide (SiO 2 ), 17.0% aluminum oxide (Al 2 o 3 ), 11.5% of boron trioxide (B 2 o 3 ), 0.4% zirconium dioxide (ZrO 2 ), 0.3% zinc oxide (ZnO), 3.5% calcium oxide (CaO), 4.5% strontium oxide (SrO), 3.0% barium oxide (BaO), 1.0% germanium dioxide (GeO 2 ), 0.5% vanadium pentoxide (V 2 o 5 ), 0.6% lanthanum trioxide (La 2 o 3 ) and 0.2% cerium oxide (CeO 2 ).

[0038] swell

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PUM

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Abstract

The TFT base plate glass consists of SiO2 55-62 wt%, Al2O3 13-20 wt%, B2O3 8-12 wt%, ZrO2 0.1-4 wt%, CaO 3.5-8 wt%, MgO 0.1-5 wt%, SrO 2-6 wt%, BaO 1-4.0 wt%, ZnO 0.1-1 wt%, GeO2 0.1-2 wt%, V2O5 0-0.8 wt% and La2O3 0.1-2 wt%, as well as Sb2O3 0.1-0.3 wt% or CeO2 0.1-0.3 wt%. It has high performance and is used in producing base plate f TFT-LCD. It has thermal expansion coefficient at 25-400 deg.c of 40x10<-7>/ deg.c, strain point higher than 650 deg.c, transition point higher than 710 deg.c, Ritter softening point higher than 900 deg.c, density lower than 2.55 g/cu mm, and visible light transmission rate not lower than 90 %.

Description

technical field [0001] The invention belongs to the technical field of glass, and mainly relates to a TFT substrate glass. Background technique [0002] As a terminal for information display, monitors play a very important role in the construction of an information society. Since the 1990s, flat panel display technology has risen rapidly and gradually replaced CRT with its unique charm (thin, light, low power consumption, low radiation, no flicker, etc.). As a new big country in the production and consumption of electronics industry, China's demand for flat panel displays is developing at an annual growth rate of 20%, and because China has a huge market space to support, this speed of development will continue for a long period of time . Flat-panel LCD displays are divided into three types: TN type, STN type and TFT (Thin film transistor) type. Compared with these three types, TFT type LCD has high contrast, fast response and wide viewing angle, etc. Its image quality is ...

Claims

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Application Information

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IPC IPC(8): C03C3/095
CPCC03C3/095
Inventor 姜宏郅晓王桂荣赵会峰沈洁郭晓丽李军葛肖晶
Owner CHINA LUOYANG FLOAT GLASS GROUP
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