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:
Nov. 09, 1999
Filed:
Jan. 07, 1999
Applicant:
Inventors:
Chung-Min Liu, Hsinchu, TW;
Chien-Chung Hung, Hsinchu, TW;
Ming-Jinn Tsai, Hsinchu, TW;
Ming-Jer Kao, Hsinchu, TW;
June-Min Yao, Hsinchu, TW;
Assignee:
Industrial Technology Research Institute, Hsin-Chu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257339 ; 257341 ; 257335 ;
Abstract
A design for a trench DMOS transistor having improved current carrying capability is presented. The principal improvement lies in the periodic replacement of the individual cells in the array with a protection cell of a different size. When this is done it becomes possible to significantly increase the density of cells per unit area. This results in a corresponding improvement in the amount of channel area available to the device and hence an increase in its current carrying capability.