GLASS FOR SEMICONDUCTOR PACKAGE WINDOW, GLASS WINDOW FOR SEMICONDUCTOR PACKAGE AND METHOD FOR MANUFACTURING THE SAME, AND SEMICONDUCTOR PACKAGE

摘要

PROBLEM TO BE SOLVED: To provide glass for a window that can be preferably attached to a plastic semiconductor package and a glass window for the semiconductor package having various functions.;SOLUTION: The glass for a semiconductor package window is: (1) used for a window material of a plastic semiconductor package and the average coefficient of linear expansion at a temperature of 100 to 300°C is 120 to 180×10^-7/°C; or (2) has the average coefficient of linear expansion and each contents of U and Th is less than or equal to 5ppb. Moreover, the glass for a semiconductor package window: (a) consists of the glass for a window; (b) is equipped with a lens function and has the average coefficient of linear expansion; or (c) has the average coefficient of linear expansion, and each contents of U and Th is less than or equal to 5ppb, consisting of glass containing Cu and phosphoric acid and the wavelength showing a transmittance of 50% is less than 630 nm in a spectral transmittance of the wavelength of 400 to 700 nm converted to a thickness of 0.5 mm.;COPYRIGHT: (C)2005,JPO&NCIPI