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:
Jul. 04, 2000
Filed:
Mar. 01, 1999
Applicant:
Inventor:
Elmer L Turner, Jr, Dallas, TX (US);
Assignee:
Teccor Electronics, LP, Irving, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257107 ; 257112 ; 257164 ; 257168 ; 257173 ;
Abstract
A four-layer low voltage thyristor device (30) in which the breakover voltage is independent of the holding current. Rather than forming a buried region (38) underlying the emitter region (42), the buried region 38 is formed laterally to the side of the emitter (42). In order to form a low breakover voltage device, the buried region (38) is required to be highly doped, but the resulting junction (40) does not approach the emitter junction (48). A low breakover voltage (5 V-12-V) thyristor can thus be realized.