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:
Jan. 07, 2020
Filed:
Jul. 09, 2018
Agc Inc., Chiyoda-ku, JP;
Mamoru Isobe, Chiyoda-ku, JP;
Motoshi Ono, Chiyoda-ku, JP;
Shigetoshi Mori, Chiyoda-ku, JP;
Kohei Horiuchi, Chiyoda-ku, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
A glass substrate includes a first surface and a second surface that are opposite to each other. Multiple through holes pierce through the glass substrate from the first surface to the second surface. Each of five through holes randomly selected from the multiple through holes includes a first opening at the first surface and a second opening at the second surface. The approximate circle of the first opening has a diameter greater than a diameter of the approximate circle of the second opening. The first opening has a roundness of 5 μm or less. Perpendicularity expressed by P=t/tranges from 1.00000 to 1.00015, where P is the perpendicularity, tis the distance between the center of the approximate circle of the first opening and the center of the approximate circle of the second opening, and tis the thickness of the glass substrate.