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Light-emitting diode

A technology of light-emitting diodes and light-exiting surfaces, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve problems such as short lifespan, light decay, yellowing of insulating rubber, etc., and achieve the effect of increasing life and reducing light decay rate

Inactive Publication Date: 2009-04-08
NINGBO ANDY OPTOELECTRONIC CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

The theoretical lifespan of light-emitting diodes is about 100,000 hours. However, when the light-emitting diodes emit light after receiving positive and negative voltages at both ends, they will generate a certain amount of heat. If the heat is not conducted out quickly, it will heat up around the chip. On the one hand, the temperature is higher than the junction temperature of the chip, so that the chip itself fails; The light will be absorbed by the yellowed insulating glue (silver glue) or the resin or phosphor material encapsulated on the chip, resulting in a large loss of the overall light efficiency of the light-emitting diode, resulting in light decay.
Judging from the light-emitting diode products currently on the market, due to the existence of the above-mentioned light decay phenomenon, its service life is far from the theoretical 100,000 hours. Greatly shorten the life of light-emitting diode products

Method used

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Embodiment Construction

[0012] The light-emitting diode disclosed in the present invention includes a bracket and a light-emitting diode grain, the light-emitting diode grain is fixed on the bracket, and a light-transmitting layer containing polydimethylsilicone medium.

[0013] In this embodiment, the chip selects the light-emitting diode crystal grains with a blue light emitting wavelength of 455-465nm, an insulating glue for the crystal-bonding adhesive (of course, silver paste can also be used), and an iron support for the light-emitting diode bracket (of course, copper can also be used). stent), the light-transmitting medium is made of organic silicon material polydimethylsilicone and a curing agent for light-emitting diode encapsulation (in this embodiment, dibutyltin dilaurate is used, of course, it can also be a silanol condensation reaction Catalytic acid and alkali or soluble organic salts of lead, cobalt, tin, iron and other metals) are formulated in proportion (mass, the same below). In t...

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Abstract

A light emitter diode including support and light emitter diode crystal grain which is fixed on the support, the light emitting surface of the LED is est with a layer of light transmission medium containing poly-dimethyl-silicone. The medium is a blended material formed by poly-dimethyl-silicone and a curing agent according to a certain proportion, which greatly reduces light emitter diode light fading rate, thus large scale enhance the light emitter diode service life.

Description

【Technical field】 [0001] The invention relates to a light-emitting diode, more precisely, to a light-emitting diode with low light decay and long life. 【Background technique】 [0002] Light-emitting diode is a semiconductor light-emitting device, which is widely used as indicator lights, display screens, etc. Light-emitting diodes are known as the fourth-generation lighting source to replace fluorescent lamps and incandescent lamps. The theoretical lifespan of light-emitting diodes is about 100,000 hours. However, when the light-emitting diodes emit light after receiving positive and negative voltages at both ends, they will generate a certain amount of heat. If the heat is not conducted out quickly, it will heat up around the chip. On the one hand, the temperature is higher than the junction temperature of the chip, so that the chip itself fails; The light will be absorbed by the yellowed insulating glue (silver glue) or the resin or phosphor material encapsulated on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00H01L33/56
Inventor 占贤武
Owner NINGBO ANDY OPTOELECTRONIC CO LTD
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