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. 26, 2010
Filed:
Sep. 03, 2003
Yuichi Takagi, Kanagawa, JP;
Genichiro Oga, Kanagawa, JP;
Hiroshi Tachimori, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A circuit having a plurality of driver IC's-to-n provided corresponding to divided areas of a display panel, each driver having an output circuit for outputting a supplied reference current IREF as a drive current to corresponding divided areas DRVAto DRVAn of the display paneland reference current source circuits-to-n for sampling and holding the reference current input from the reference current input terminal, then supplying the same to the output circuit, the reference current input terminal being connected to the reference current input terminal of another driver by a common current interconnect CML, and the reference current being distributed to the reference current source circuits of drivers by time division. According to the present invention, luminance steps among drivers driving the display (driven object) by division can be made sufficiently small, and a large size, high dynamic range display organic EL display, which cannot be realized by the conventional method of supply of the reference current, can be realized.