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Light-emitting element with temperature compensation function

A light-emitting element and temperature compensation technology, applied in the field of light-emitting elements with temperature compensation function, can solve problems such as inconvenient use and unstable color

Active Publication Date: 2015-11-25
EPISTAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the warm white light-emitting element composed of red and blue light-emitting diodes is used in the lighting field, due to the different heat and cold coefficients of the red and blue light-emitting diodes, the lighting system will appear from the beginning to the end of the lighting system. There is an unstable problem in the color of the light, which causes inconvenience in use

Method used

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  • Light-emitting element with temperature compensation function
  • Light-emitting element with temperature compensation function
  • Light-emitting element with temperature compensation function

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Embodiment Construction

[0040] figure 2 Shown is a schematic circuit diagram of the first embodiment of the light-emitting element of the present invention. The light-emitting element 200 includes a first LED group 202 , a second LED group 204 , and a thermistor 206 with a positive temperature coefficient. The first LED group 202 includes a first number of LED units 208 connected in series, the second LED group 204 includes a second number of LED units 208 connected in series, and the first LED group 202 and the second LED group 202 The two light emitting diode groups 204 are electrically connected in series; wherein, the light emitting diode unit 208 has a thermal coefficient not greater than 0.9, or preferably not greater than 0.85, or more preferably not greater than 0.8, and includes a wavelength range that can be emitted in visible light or Light-emitting diodes in the invisible light range, such as light-emitting diodes in the wavelength range of red light, blue light, or ultraviolet light, or...

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PUM

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Abstract

The invention relates to a light-emitting element with a function of temperature compensation, which comprises a light-emitting diode group. A temperature compensation element is electrically connected with the light-emitting diode group. When the light-emitting element is operated, the interface temperature of the light-emitting diode group rises from the first temperature to the second temperature. Due to the temperature compensation element, the value of the current passing through the light-emitting diode group at the second temperature is higher than the value of the current passing through the light-emitting diode group at the first temperature.

Description

technical field [0001] The invention discloses a light-emitting element, especially a light-emitting element with temperature compensation function. Background technique [0002] The light-emitting diode (light-emitting diode, LED) light-emitting principle is to use the energy difference between the electrons moving between the n-type semiconductor and the p-type semiconductor, and release the energy in the form of light. This light-emitting principle is different from the light-emitting principle of incandescent lamps. , so light-emitting diodes are called cold light sources. [0003] In addition, light-emitting diodes have the advantages of high durability, long life, light weight, and low power consumption. Therefore, today's lighting market has high expectations for light-emitting diodes, which are regarded as a new generation of lighting tools, which have gradually replaced traditional light sources. In various fields, such as traffic signs, backlight modules, street l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/00H05B37/02
CPCH01L24/24H01L2924/12041H01L2224/24H01L2924/00H01L2924/00012
Inventor 谢明勋王健源
Owner EPISTAR CORP