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:
Apr. 30, 2013

Filed:

Jun. 29, 2007
Applicants:

Somei Kawasaki, Saitama, JP;

Takanori Yamashita, Yokohama, JP;

Inventors:

Somei Kawasaki, Saitama, JP;

Takanori Yamashita, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/038 (2006.01); G09G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A display apparatus includes a plurality of luminescent devices aligned periodically in a row direction and in a column direction, a plurality of pixel circuits aligned periodically in a row direction and in a column direction for supplying an electric current to each of the luminescent devices, a plurality of data lines each connected commonly to the pixel circuits aligned periodically in the column direction for supplying signal currents to these pixel circuits, and a plurality of column-current generating circuits connected to the plurality of data lines respectively for supplying signal currents to corresponding data lines. Each of the column-current generating circuits have a plurality of transistor devices arranged in a distributed manner and including main electrodes respectively connected in parallel and control electrodes commonly connected. The plurality of transistor devices are arranged in the row direction at a pitch equal to or n times, with n being a natural number not smaller than two, of the alignment period in the row direction of the plurality of luminescent devices and arranged in the column direction at a constant pitch.


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