The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2017
Filed:
Apr. 14, 2015
Avanstrate Inc., Yokkaichi-shi, Mie, JP;
AvanStrate Inc., Yokkaichi-shi, JP;
Abstract
A substrate for p-Si TFT flat panel displays made of a glass having a high low-temperature-viscosity characteristic temperature and manufactured while avoiding erosion/wear of a melting tank during melting through direct electrical heating. The glass substrate comprises 52-78 mass % of SiO, 3-25 mass % of AlO, 3-15 mass % of BO, 3-20 mass % of RO, wherein RO is total amount of MgO, CaO, SrO, and BaO, 0.01-0.8 mass % of RO, wherein RO is total amount of LiO, NaO, and KO, and 0-0.3 mass % of SbO, and substantially does not comprise AsO, wherein the mass ratio CaO/RO is equal to or greater than 0.65, the mass ratio (SiO+AlO)/BOis in a range of 7-30, and the mass ratio (SiO+AlO)/RO is equal to or greater than 5. A related method involves melting glass raw materials blended to provide the glass composition; a forming step of forming the molten glass into a flat-plate glass; and an annealing step of annealing the flat-plate glass.