Glass substrate for display and manufacturing method thereof

A glass substrate and display technology, which is applied in the field of glass substrate for flat panel display, glass substrate for oxide semiconductor thin film transistor) display, glass substrate for display and its manufacture, glass substrate for low temperature polysilicon thin film transistor) display, can solve the problem of heat Reduced shrinkage, insufficient, etc.

Active Publication Date: 2016-04-20
AVANSTRATE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the technology of Patent Document 3 is insufficient for reducing the thermal shrinkage rate due to the increasing demand for high-definition display panels in recent years.

Method used

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

Examples

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Embodiment

[0355] Hereinafter, this embodiment will be described in more detail based on examples. However, this embodiment is not limited to the Examples. In the following examples and comparative examples, the physical properties described below were measured.

[0356] (strain point)

[0357] The measurement was performed using a beam bending measuring device (manufactured by Tokyo Industrial Co., Ltd.), and the strain point was obtained by calculation in accordance with the beam bending method (ASTMC-598).

[0358] (devitrification temperature)

[0359] The glass was pulverized, and the glass pellets passed through the 2380 μm sieve and remained on the 1000 μm sieve were added to the platinum boat. This platinum boat was held in an electric furnace having a temperature gradient of 1050 to 1380° C. for 5 hours, then taken out from the furnace, and devitrification generated inside the glass was observed with a 50-power optical microscope. The highest temperature at which devitrifica...

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Abstract

This invention provides a glass substrate used for a display and a manufacturing method thereof,, and particularly provides a glass substrate simultaneously achieving a glass substrate having a high strain point and preventing damage of a melting tank, simultaneously achieving a glass substrate having a high strain point and inhibiting devitrification, or simultaneously achieving a glass substrate having a high strain point and a high etching rate and a manufacturing method of the glass substrate. The glass substrate for a display contains SiO2, Al2O3, 0-8 mol% of B2O3, and 0.01-0.8 mol% of R2O, wherein the BaO / RO is 0.05-1, and a strain point is 670 DEG C or above. Or the glass substrate for a display contains a glass containing SiO2, Al2O3 and MgO, wherein the MgO / (RO+ZnO) is 0.1-0.9, a strain point is 700 DEG C or above, and a thermal contraction rate is 5 to 75 ppm. Or the glass substrate for a display contains SiO2, Al2O3, BaO, 0-7% of B2O3, and 1-15% of BaO, wherein the SiO2 / Al2O3 is lower than 6.0, and a strain point is 700 DEG C or above. The RO represents (MgO+CaO+SrO+BaO) and the R2O represents (Li2O+Na2O+K2O).

Description

[0001] Information about divisional applications [0002] This case is a divisional application. The parent case of this divisional case is an invention patent application with an application date of December 30, 2013, an application number of 201310745033.4, and an invention title of “Glass Substrate for Display and Its Manufacturing Method”. technical field [0003] The invention relates to a glass substrate for a display and a manufacturing method thereof. In particular, the present invention relates to a glass substrate for a low temperature polysilicon thin film transistor (hereinafter, referred to as LTPS-TFT (Low-Temperature-Polycrystalline-SiliconThin-Film-Transistor)) display. Also, the present invention relates to a glass substrate for an oxide semiconductor thin film transistor (hereinafter referred to as OS-TFT (Oxide-Semiconductor Thin-Film-Transistor)) display. More specifically, the present invention relates to a glass substrate for a display in which the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/091
CPCY02P40/57
Inventor 市川学小山昭浩
Owner AVANSTRATE INC
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