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:
Sep. 04, 2007
Filed:
Feb. 27, 2006
Applicants:
Chin-chung Tsai, Hsinhua, TW;
Kun-cheng Hung, Hsinhua, TW;
Inventors:
Chin-Chung Tsai, Hsinhua, TW;
Kun-Cheng Hung, Hsinhua, TW;
Assignee:
Himax Technologies Limitd, Tainan County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a decoder of a digital-to-analog converter, the gamma voltage selection is controlled by a reduced number of NMOS and PMOS transistors according to the characteristic of the NMOS and PMOS transistor, such that the layout area of the switch array is reduced. Moreover, a N-type buried diffusion (BDN) layer and a P-type buried diffusion (BDP) layer are adopted to replace the contacts in the layout of conventional decoder, such that the layout can be simplified and the bump pad pitch thereof can be decreased.