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A method for testing thermal shrinkage of glass

A heat shrinkage and glass technology, which is used in the heat shrinkage test of liquid crystal substrate glass melt samples, and in the field of testing glass heat shrinkage to achieve the effect of fast and accurate testing.

Active Publication Date: 2021-04-13
IRICO DISPLAY DEVICES
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  • Abstract
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Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the present invention provides a method for testing the heat shrinkage of glass, which uses a dilatometer to test the heat shrinkage of glass, which effectively solves the disadvantages brought about by the current glass heat shrinkage test method, and can not only accurately and quickly Testing the heat shrinkage of glass can even test the heat shrinkage of molten samples in the laboratory, which provides a test guarantee for the detection of product thermal properties in the production process and the research of glass thermal properties in material recipe development.

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  • A method for testing thermal shrinkage of glass

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are explanations rather than limitations of the present invention.

[0023] A method for testing thermal shrinkage of glass, comprising the steps of:

[0024] Step 1: Preparation of Glass Samples

[0025] Process the bulk glass samples melted in the laboratory into a number of cylindrical rods with a length of 50mm and a diameter of ￠8mm. The two ends of the processed glass samples 3 are ground and polished to ensure that the two ends of the glass samples are flat and parallel to each other without burrs. The two end faces installed on the bracket 6 are perpendicular to the axis of the push rod of the dilatometer.

[0026] The second step, glass sample annealing

[0027] Place the processed glass sample 3 on the support 6 of the dilatometer. The position of the glass sample 3 cannot affect the normal sliding of the push rod 5 of the dilatometer. After t...

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Abstract

The invention provides a method for testing the heat shrinkage of glass, which uses a glass thermal dilatometer to anneal the tested glass sample, and further uses a thermal dilatometer to test the thermal shrinkage of the glass. The test method integrates annealing and testing in the same instrument. , At the same time, because the test of the thermal dilatometer is accurate, fast and convenient, it reduces the manual error in the test and provides a guarantee for the accurate test of glass performance.

Description

technical field [0001] The invention relates to the field of production and measurement of glass substrates, in particular to a method for testing thermal shrinkage of glass, in particular for testing the thermal shrinkage of molten liquid crystal substrate glass samples. Background technique [0002] Substrate glass is an important part of liquid crystal display. In the manufacturing process of liquid crystal display, thin film transistor (TFT) and color filter layer need to go through multiple times of direct heating on the glass plate and photolithography process accurate to the micron level, but due to the During repeated thermal processing, the glass plate will shrink, which will lead to pixel dislocation and size change, which will affect the quality of the liquid crystal display. Therefore, we must improve the thermal stability of the substrate glass and reduce the thermal stability of the glass. shrink. The composition and thermal history of the glass determine the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/16G01N1/32
CPCG01N1/32G01N25/16
Inventor 郭萍莉王答成曾召
Owner IRICO DISPLAY DEVICES
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