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.

Date of Patent:
Jan. 31, 2023

Filed:

Feb. 15, 2022
Applicant:

Lapis Technology Co., Ltd., Yokohama, JP;

Inventors:

Hiroshi Tsuchi, Yokohama, JP;

Manabu Nishimizu, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); H03K 17/687 (2006.01); G02F 1/1362 (2006.01); G02F 1/133 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3685 (2013.01); G09G 3/3614 (2013.01); H03K 17/6872 (2013.01); G02F 1/13306 (2013.01); G02F 1/136286 (2013.01);
Abstract

An output circuit includes a first switch that outputs a positive voltage signal received via a first node when in an ON state, a second switch that outputs a negative voltage signal received via a second node when in an ON state, third and fourth switches that set the first and second nodes to a reference power supply voltage when in an ON state, a first follower circuit that generates, as a gate voltage, a voltage signal following and being in phase with a voltage signal of the first node through source follower operation and supplies the gate voltage to a gate of the first switch, and a second follower circuit that generates, as a gate voltage, a voltage signal following and being in phase with a voltage signal of the second node through source follower operation and supplies the gate voltage to a gate of the second switch.


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