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:
Mar. 20, 2007
Filed:
Feb. 14, 2006
Atsushi Sudoh, Saitama, JP;
Yoshinori Okada, Oita, JP;
Seiji Murakami, Oita, JP;
Atsuhiro Miwata, Oita, JP;
Atsushi Sudoh, Saitama, JP;
Yoshinori Okada, Oita, JP;
Seiji Murakami, Oita, JP;
Atsuhiro Miwata, Oita, JP;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A current driver that can control variation in the consumed current in conjunction with variation in the setting value of the driving current. The mirror current of transistors Q-to Q-at each of output circuits-to-keeps flowing through output terminal Toor node Nirrespective of the setting value of the pixel data. Also, the mirror current of transistor QD keeps flowing in the series circuit of transistors QD and QD irrespective of the setting value of the pixel data. Consequently, even when the setting value of the driving current varies in various ways, the current consumed in each output circuit can still be kept constant. As a result, it is possible to prevent variation in the voltage of the power supply line in conjunction with variation of the consumed current, and it is possible to reduce fluctuation in the driving current between output channels.