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:
Jun. 09, 2009
Filed:
Nov. 08, 2004
Kazuo Nakamura, Kanagawa, JP;
Katsuhide Uchino, Kanagawa, JP;
Nobutoshi Asai, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
An organic electroluminescent display device includes scanning lines, signal lines, and pixels formed in a matrix, each pixel being at an intersection of each of the scanning lines and each of the signal lines. Each pixel includes a light-emitting element, a light-emitting circuit composed of a thin-film transistor, and a light-receiving circuit composed of a thin-film transistor. When the light-emitting circuit is selected by the scanning line, the light-emitting circuit drives the light-emitting element according to a video signal that is input from the signal line, thereby displaying an image on the pixels formed in the matrix. The light-receiving circuit is selected in a period of time during which the light-emitting circuit does not operate, and outputs a light-receiving signal in accordance with the amount of light incident on the pixel to a different signal line.