Light-emitting diode packaging method

Abstract

One light emitter diode seal method, including following step: drip insulation glue into support reflection cup; place prepared crystal grains on to the support; bake the crystai grains to be adhered to the support; lead two dold wires at positive pole and negative pole; blend poly-dimethyl-silicone and curing agent in a proportion and fully mix them; drip the blended material on the lighr emitting surface of LED grains to form a layer light transmission medium; bake the medium to be cured, and so on.

Description

【Technical Field】 [0001] The present invention relates to a method for packaging light emitting diodes, more specifically, to a method for packaging light emitting diodes with low light attenuation and long life. 【Background technique】 [0002] Light-emitting diode is a kind of semiconductor light-emitting device, which is widely used as indicator light, display screen and so on. Light-emitting diodes are known as the fourth-generation lighting source to replace fluorescent lamps and incandescent lamps. The theoretical life of the light-emitting diode is about 100,000 hours. However, when the light-emitting diode emits light after passing the positive and negative voltages at both ends, it generates a certain amount of heat. If the heat is not quickly transferred out, it will heat up around the chip. On the one hand, the temperature is higher than the junction temperature of the chip, causing the chip itself to fail; on the other hand, it causes the surrounding packaging material...

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 life is far from the theoretical 100,000 hours. Generally, at 1,000 hours, its light decay rate has reached more than 30%, so in Greatly shorten the life of light-emitting diode products

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