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:
May. 09, 2006
Filed:
Mar. 14, 2005
Chih-feng Huang, Jhubei, TW;
Tuo-hsin Chien, Tucheng, TW;
Jenn-yu G. Lin, Taipei, TW;
Ta-yung Yang, Milpitas, CA (US);
Chih-Feng Huang, Jhubei, TW;
Tuo-Hsin Chien, Tucheng, TW;
Jenn-yu G. Lin, Taipei, TW;
Ta-yung Yang, Milpitas, CA (US);
System General Corp., Taipei Hsien, TW;
Abstract
An electrostatic discharge (ESD) device, which functions like a diode during normal IC operation and like a SCR during an electrostatic discharge event, is provided. To form an equivalent SCR structure, the ESD device includes a plurality of N+ regions and a plurality of P+ regions formed inside an N-well. The P+ regions and the N+ regions are formed adjacent to each other in a sequence, and the regions located at both ends of the sequence are the N+ regions. In addition, the ESD device is integrated with a pad and is formed under the pad. Furthermore, since the pad has a large surface area and is plated to be a good electrical conductor, the current distribution in the ESD device is uniform.