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:
Oct. 19, 2010
Filed:
Jul. 11, 2006
Shau Chew Wang, Taipei, TW;
Jyh Ming Yu, Kaohsiung, TW;
Shau Chew Wang, Taipei, TW;
Jyh Ming Yu, Kaohsiung, TW;
Polytronics Technology Corp., Hsinchu, TW;
Abstract
An LED apparatus with temperature self-regulating, over-temperature protection, and over-current protection function comprises an LED chip, a heat dissipation plate, a heat conductive layer and a temperature control device. The heat dissipation and the heat conductive layer disposed thereon carry the LED chip and dissipate the heat generated from the LED chip that is connected to an electric power source for luminance. The temperature control device exhibiting PTC behavior is electrically connected between the LED chip and the electric power source in series, and the distance between the LED chip and the temperature control device is less than 3 cm. The heat conductive layer can consist of polymeric dielectric material and has a heat conduction coefficient larger than 1.0 W/mK at 25° C.