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. 24, 2026
Filed:
Oct. 20, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Hiromitsu Itamoto, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Provided here are: a sub-mount board that is provided with, on its front surface, a GND pattern, a capacitor mounting pattern and a signal line, and is provided with, on its back surface, a GND pattern; a light modulation element that is bonded to the surface of the GND pattern; a matching capacitor whose back surface is bonded to the surface of the capacitor mounting pattern and whose front surface is connected through a wire to a front surface electrode of the light modulation element; a matching resistor that makes a connection between the capacitor mounting pattern and the GND pattern; and a protective resistor that makes a connection between the signal line and the GND pattern across the sub-mount board in a board thickness direction, the signal line being connected through a wire to the front surface electrode of the light modulation element. Accordingly, the sub-mount board is small-sized.