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:
Feb. 16, 2010
Filed:
May. 22, 2007
Hendrik Santo, San Jose, CA (US);
Gurjit Thandi, San Jose, CA (US);
Dilip S, Saratoga, CA (US);
Kien Vi, Palo Alto, CA (US);
Hendrik Santo, San Jose, CA (US);
Gurjit Thandi, San Jose, CA (US);
Dilip S, Saratoga, CA (US);
Kien Vi, Palo Alto, CA (US);
mSilica Incorporated, Santa Clara, CA (US);
Abstract
The present invention provides a controller for regulating current in LEDs in electronic displays. The controller uses temperature sensing diodes to detect changes in the LED ambient temperature. As the LED ambient temperature changes, the forward voltage of the temperature sensing diode decreases. A signal processor adjusts the current passing through the LEDs based on the temperature induced changes in the forward voltage of the temperature sensing diodes. The present invention can reduce costs over the present methods of regulating current in LEDs and may more easily be integrated into a single integrated circuit chip. The temperature sensing may also be implemented outside the integrated circuit chip.