Silicate glass substrate for flat-panel display

Abstract

The invention discloses a silicate glass substrate for a flat-panel display. The glass substrate comprises the following components by molar percent: 64-70% of SiO2, 12-16% of Al2O3, 3-8.5% of B2O3, 6.5-9.5% of CaO, 2.5-5% of SrO and 0.02-0.1% of SnO. The glass substrate disclosed by the invention is the silicate glass substrate for the flat-panel display having the advantages of relatively high strain point, relatively low melting temperature, relatively low liquidus temperature and environmental friendliness, and is especially applicable for glass substrates for low-temperature polysilicon thin-film transistor liquid crystal displays (LTPSTFT-LCD) and glass substrates for organic electroluminescence (OEL) displays.

Description

technical field [0001] The invention belongs to the field of glass manufacturing, and relates to an alkaline-earth aluminoborosilicate glass component, which can be widely used in the production of glass substrates for flat-panel displays, and is especially suitable for low-temperature polysilicon thin-film 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 is increasing, such as active matrix liquid crystal display (AMLCD), organic light emitting diode (OLED) and active matrix liquid crystal display (LTPS TFT- LCD) devices, which are based on thin-film transistor (TFT) technology using thin-film semiconductor materials. Silicon-based TFT can be divided into amorphous silicon (a-Si) TFT, polycrystalline silicon (p-Si) TFT and single crystal silicon (SCS) TFT, among whic...

AI Technical Summary

Problems solved by technology

Silicon-based TFT can be divided into amorphous silicon (a-Si) TFT, polycrystalline silicon (p-Si) TFT and single crystal silicon (SCS) TFT, among which amorphous silicon (a-Si) TFT is currently the mainstream TFT-LCD application However, the active matrix TFT fabricated on the amorphous silicon film has to make the device area slightly larger due to its low electron mobility, so it occupies a large proportion of the small pixel area, making the pixel The aperture ratio (effective pixel area / total pixel area) is only about 70%

Seriously affects the effective use of the backlight source, and although the passive liquid crystal display cannot display video images, its aperture ratio is high (up to 100% regardless of the pixel interval), and the mutual competition in the aperture ratio has led people to develop the aperture A polysilicon TFT active matrix with an efficiency of more than 80%, that is, P-TFT-LCD

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