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:
Dec. 11, 2001
Filed:
Jun. 15, 1999
Applicant:
Inventor:
Kazuo Taki, Kobe, JP;
Assignee:
AIL Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/500 ; H03K 1/900 ;
U.S. Cl.
CPC ...
H01L 2/500 ; H03K 1/900 ;
Abstract
To provide a small-area and low-power-consuming logic gate cell which is constructed of a circuit of two inverting logic gates connected in series in a layout of four-step diffusion regions. A first inverting logic gate is formed of a small transistor on internal two-step diffusion regions, a second inverting logic gate is formed of external two-step diffusion regions, and output wirings of the second inverting logic gate is formed of second metal layer wirings so that the second metal layer wirings extend over the first inverting logic gate.