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. 26, 2006
Filed:
Mar. 04, 2004
Jen-chau Wu, Hsin-Chu, TW;
Cheng-chung Yang, Chang-Hua Hsien, TW;
Rong-yih Hwang, Hsin-Chu Hsien, TW;
Chuan-cheng Tu, Taipei, TW;
Jen-Chau Wu, Hsin-Chu, TW;
Cheng-Chung Yang, Chang-Hua Hsien, TW;
Rong-Yih Hwang, Hsin-Chu Hsien, TW;
Chuan-Cheng Tu, Taipei, TW;
Epistar Corporation, Hsinchu, TW;
Abstract
This invention relates to an ESD protection configuration and method for light emitting diodes (LED), including an LED an LED, having a p-n junction and connected to a circuit substrate, the circuit substrate having two p-type substrates and one n-type substrate therein; a first ESD protection configuration, built-in the circuit substrate and including a first resistor, a first capacitor and a first diode that are connected in series and then engage a parallel connection with the LED, wherein the first diode has a p-node connected to an n-node of the LED; and a second ESD protection configuration, built-in the circuit substrate and including a second resistor, a second capacitor and a second diode that are connected in series and then engage a parallel connection with the LED and the first ESD protection configuration, wherein the second diode has a p-node connected to the p-node of the LED, whereby such a configuration absorbs and removes ESD induced upon human contact and prevents the LED from burning to effectively extend the lifespan of the LED.