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:
Jul. 14, 2026
Filed:
Sep. 24, 2024
Lapis Technology Co., Ltd., Yokohama, JP;
Hiroki Aizawa, Yokohama, JP;
Hiroshi Tsuchi, Yokohama, JP;
LAPIS Technology Co., Ltd., Yokohama, JP;
Abstract
An output amplifier circuit, and a display driver and a display device including the output amplifier circuit. The output amplifier circuit includes: first to nth amplifiers which receive first to nth input voltages and generate first to nth output voltages by amplifying the respective first to nth input voltages; first to Kth bias circuits which are provided corresponding to each of first to Kth amplifier groups formed by grouping the first to nth amplifiers into K groups, and each generates a bias voltage for setting a current value of an operating current of the amplifiers; first to Kth wirings which supply the bias voltage generated by each of the first to Kth bias circuits to the first to Kth amplifier groups respectively; and a switch circuit which, when in an ON state, connects one wiring among the first to Kth wirings with another wiring different from the one wiring.