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Alkaline earth aluminum silicate glass substrate and components thereof

A technology of aluminosilicate glass and glass substrate, applied in the field of alkaline earth aluminosilicate glass substrate and its composition, can solve the problems of low clarification gas temperature, low effectiveness of glass bubbles, toxicity, etc., and improve the yield of production line Large, production cost reduction, the effect of lowering the melting temperature

Active Publication Date: 2014-11-19
北京远大信达科技有限公司 +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, antimony itself poses environmental and health concerns
Although Sb 2 o 3 is not as toxic as As 2 o 3 that high, but Sb 2 o 3 still toxic
Moreover, compared with arsenic, antimony produces clear gas at a lower temperature and is less effective in removing such glass bubbles

Method used

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  • Alkaline earth aluminum silicate glass substrate and components thereof
  • Alkaline earth aluminum silicate glass substrate and components thereof

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Embodiment Construction

[0019] The key to the alkaline earth aluminosilicate glass substrate and its composition is: the molar percentage meter of each component in the original glass substrate includes:

[0020] SiO 2 69~75%,

[0021] Al 2 O 3 12.5~17.5%,

[0022] CaO 3.5~7.5%,

[0023] SrO 0.8~3%,

[0024] ZnO 3~6%,

[0025] Y 2 O 3 0.3~2.5%,

[0026] La 2 O 3 0.01~0.2%.

[0027] Among the components: SiO 2 +Al 2 O 3 > 86%.

[0028] Among the components: SrO / R’O <0.25, where R’O=CaO+SrO+ZnO.

[0029] Among the components: Y 2 O 3 / R’O <0.25.

[0030] Among the components: ZnO / (CaO+SrO)> 0.3.

[0031] Among the components: Al 2 O 3 / (R’O+RE 2 O 3 )> 0.95.

[0032] The glass substrate uses SnO as a clarifying agent, and its content is 0.05 to 0.15% in terms of mole percentage.

[0033] Among the components: SiO 2 The preferred mole percentage is 70~74%, Al 2 O 3 The preferred mole percentage of is 13-17%.

[0034] Among the components: the preferred mole percentage of ZnO is 3...

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Abstract

The invention discloses an alkaline earth aluminum silicate glass substrate and components thereof and aims at providing a flat panel display glass substrate which is environmentally friendly and more perfect in performance and components of the flat panel display glass substrate. According to the adopted technical scheme, an original sheet of the glass substrate comprises the following components in percentage by mole: 69-75% of SiO2, 12.5-17.5% of Al2O3, 3.5-7.5% of CaO, 0.8-3% of SrO, 3-6% of ZnO, 0.3-2.5% of Y2O3 and 0.01-0.2% of La2O3. The alkaline earth aluminum silicate glass substrate does not contain As2O3, Sb2O3 and compounds of As2O3 and Sb2O3, and meanwhile, the glass does not contain heavy metal barium and a compound thereof and has a relatively high strain point, relatively high young modulus, relatively high transmittance, relatively low melting temperature, relatively low liquidus temperature and relatively low density so as to be in accord with the industrial development tendency of flat panel displays.

Description

Technical field [0001] The invention belongs to the field of glass manufacturing, in particular an alkaline earth aluminosilicate glass substrate and its composition. It can be widely used to make glass substrates for flat-panel displays, photovoltaic devices or other optoelectronic devices, and is particularly suitable for low-temperature polysilicon films. Transistor liquid crystal display (LTPS TFT-LCD) substrate glass and organic electroluminescent display (OEL) substrate glass. Background technique [0002] With the rapid development of the flat panel display industry, the demand for various display devices continues to grow, such as active matrix liquid crystal displays (AMLCD), organic light-emitting diodes (OLED), and active matrix liquid crystal displays (LTPS TFT- LCD) devices, these display devices are based on the use of thin film semiconductor materials to produce thin film transistor (TFT) technology. Silicon-based TFTs can be divided into amorphous silicon (a-...

Claims

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Application Information

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IPC IPC(8): C03C3/095C03C1/00
Inventor 张广涛闫冬成刘泽文沈玉国李俊锋刘文泰
Owner 北京远大信达科技有限公司
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