Patent ID: 11195971

Abstract:
A glass wiring substrate includes a glass substrate, a first wiring portion formed on a first surface of the glass substrate, a second wiring portion formed on a second surface opposite to the first surface, a through-hole formed in a region of the glass substrate in which the first wiring portion and the second wiring portion are not formed, the through-hole having a diameter on a second surface side larger than a diameter on a first surface side, and a through-hole portion formed in the through-hole, one end portion of the through-hole portion extending to the first wiring portion, the other end portion of the through-hole portion extending to the second wiring portion, in which a wiring pitch P1 of the first wiring portion in the vicinity of the through-hole portion is narrower than a wiring pitch P2 of the second wiring portion in the vicinity of the through-hole portion.