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:
Sep. 03, 2013
Filed:
Jul. 29, 2009
Katsuyoshi Takahashi, Miyazaki, JP;
Katsuyoshi Takahashi, Miyazaki, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
A display driving device includes an output circuit that drives display elements. The output circuit includes a bias circuit, an amplifier stage and an output stage. The bias circuit generates bias signals that include constant-current-control signals of a first bias signal and a second bias signal of the same polarity. The first and second bias signals are short circuited by a vertical line in the bias circuit and the vertical line is shielded. The amplifier stage is formed in a first well and constant-current-controlled by the first bias signal to amplify an input display signal. The output stage is formed in a second well. The first and second wells are formed separately in a semiconductor substrate. The output stage is constant-current-controlled by the second bias signal and supplies an output signal of the amplifier stage to the display element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile