Light emitting diode apparatus
AssigneePolytronics Technology Corp.
InventorsDavid Shau Chew Wang, Jyh Ming Yu
Life of this patent
Estimating the term…
Abstract
A light emitting diode (LED) apparatus with temperature control and current regulation functions is provided. The LED apparatus includes at least one LED die and at least one temperature control and current regulation (TCCR) device. The TCCR device is electrically connected between the LED die and a power source, and is placed within an effective temperature sensing distance of the LED die, so as to sense temperature changes of the LED die. The resistance of the TCCR device is proportional to the temperature in a range of 25° C. to 85° C., i.e., the resistance increases with temperature. Moreover, the resistance difference of the TCCR device between 50° C. and 80° C. is greater than or equal to 100 mΩ.
Claims7
A light emitting diode (LED) apparatus, comprising:
- at least one LED die;
- and
- at least one temperature control and current regulation (TCCR) device electrically connected in series between the LED die and a power source, and placed within an effective temperature sensing distance of the LED die to sense a temperature change of the LED die, wherein the TCCR device exhibits positive temperature coefficient behaviors, and resistance difference between 50° C. and 80° C. is greater than or equal to 100 mΩ.
Dependencies are inferred from the claim text.