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. 13, 2006
Filed:
Mar. 15, 2002
Mitsuo Inoue, Tokyo, JP;
Masashi Okabe, Tokyo, JP;
Shuji Iwata, Tokyo, JP;
Takashi Yamamoto, Tokyo, JP;
Mitsuo Inoue, Tokyo, JP;
Masashi Okabe, Tokyo, JP;
Shuji Iwata, Tokyo, JP;
Takashi Yamamoto, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a spontaneous light-emitting display device operating in an active matrix mode, variations in the threshold voltages of transistors controlling the current flowing to light-emitting elements and variations in the light emission threshold voltages of the light-emitting elements are suppressed, reducing variations in the luminance of the light-emitting elements. Light-detecting elements detect light emitted by the light-emitting elements, and threshold voltages of the transistors are detected by the voltages of nodes of resistors and the light-emitting elements. Further, transistors controlled by respective signals of the light-detecting elements also detect the light emission threshold voltages of the light-emitting elements.