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:
Aug. 26, 2008
Filed:
Jul. 01, 2005
Chih-feng Huang, Jhubei, TW;
Ta-yung Yang, Milpitas, CA (US);
Jenn-yu G. Lin, Taipei, TW;
Tuo-hsin Chien, Tucheng, TW;
Chih-Feng Huang, Jhubei, TW;
Ta-yung Yang, Milpitas, CA (US);
Jenn-yu G. Lin, Taipei, TW;
Tuo-Hsin Chien, Tucheng, TW;
System General Corp., Taipei Hsien, TW;
Abstract
An electrostatic discharge (ESD) device has a parasitic SCR structure and a controllable trigger voltage. The controllable trigger voltage of the ESD device is achieved by modulating a distance between an edge of a lightly doped well and an edge of a heavily doped region located at two ends of the lightly doped well. Since the distance and the trigger voltage are linearly proportional, the trigger voltage can be set to a specific value from a minimum value to a maximum value.