Clarifying agent for TFT-LCD (Thin Film Transistor Liquid Crystal Display) glass, application and use method thereof

A clarifying agent and glass technology, applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools, etc., can solve problems affecting the performance of glass products, achieve the effect of reducing the content of hydroxyl groups and improving clarification

Inactive Publication Date: 2012-07-18
成都中光电科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under certain conditions, hydrogen and oxygen will be generated. If these gases are not removed in time, bubbles will be formed, which will affect the performance of glass products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A. Mixing: Add strontium chloride accounting for 0.118% by weight of the TFT-LCD glass raw material to the TFT-LCD glass raw material in proportion. The TFT-LCD glass raw material includes quartz sand, alumina, boron oxide, nitrate, strontium oxide and A small amount of regulators (strontium chloride, SnO, BaO), mixed evenly and then glass melting;

[0022] B. Melting: add the mixture obtained in step A at 1560±20°C (preferably 1560°C), heat and dissolve for 3-4 hours (preferably 3 hours); heat up to 1600±10°C (preferably 1600°C), clarify for 2 hours Above (preferably 2 hours); then heat up to 1620±10°C (preferably 1620°C), clarify for more than 1.5 hours (preferably 1.5 hours);

[0023] C. Annealing: Cast the molten glass on the preheated mold, and then put it into the annealing furnace for annealing.

[0024] As a preferred manner, in the mixing step, quartz sand is used as a diluent to fully mix with strontium chloride first, and then to mix with other TFT-LCD glass...

Embodiment 2

[0026] Its strontium chloride accounts for 0.236% by weight of the TFT-LCD glass raw material, and the rest are the same as in Example 1.

Embodiment 3

[0028] Its strontium chloride accounted for 0.354% by weight of the TFT-LCD glass raw material, and the rest were the same as in Example 1.

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PUM

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Abstract

The invention belongs to the field of glass manufacturing and discloses a clarifying agent for TFT-LCD (Thin Film Transistor Liquid Crystal Display) glass. The clarifying agent is strontium chloride of which the weight percent is 0.12-0.36% of the weight of the TFT-LCD glass raw materials. Due to the adoption of the clarifying agent, the weight percent of the strontium oxide correspondingly generated in the TFT-LCD glass is 0.5-1.5%. The invention also discloses a use method of the clarifying agent. The use method comprises the steps of mixing, founding and annealing. The invention also discloses an application of the strontium chloride which is used as the clarifying agent for the TFT-LCD glass. The invention provides a new application of the strontium chloride, which is the clarifying agent for manufacturing a TFT-LCD glass substrate; the content of hydroxyl in liquid glass is reduced; a clarifying effect is achieved; the air bubbles are reduced; and according to the use method, the optimal effect of the clarifying agent is achieved and the optimal classifying effect is achieved.

Description

technical field [0001] The invention belongs to the field of glass manufacturing, in particular to TFT-LCD glass. Background technique [0002] In the manufacturing process of TFT-LCD glass substrate, it is necessary to introduce various raw materials, which contain moisture. During the high-temperature melting process, some water will evaporate, while some water will remain in the molten glass and mostly exist in the form of hydroxyl group (-OH). Under certain conditions, hydrogen and oxygen will be generated. If these gases are not removed in time, bubbles will be formed, which will affect the performance of glass products. Contents of the invention [0003] The object of the present invention is to introduce a clarifying agent used in the manufacture of TFT-LCD glass substrates, reduce the hydroxyl content in the glass liquid, have a clarifying effect, and reduce bubbles. [0004] The second purpose of the present invention is to propose a method for using the above-m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/00C03B5/225
Inventor 彭寿李兆廷郭建评
Owner 成都中光电科技有限公司
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