LED

Abstract

The invention relates to a LED, specifically a LED with long light emitting life, a good light emitting efficiency and stable brightness, comprising: a substrate; a thermal conductive layer arranged on surface of the substrate; a first semiconductor layer arranged on part surface of the thermal conductive layer; an active layer arranged on surface of the first semiconductor layer; a second semiconductor layer arranged on surface of the active layer; a radiation film layer arranged on the surface of the part of the first semiconductor layer which is not covered by and is arranged on the thermal conductive layer; an insulative layer on surface of that part of the thermal conductive layer which is not covered by the first semiconductor layer and the radiation film layer; a first electric contact part connected to the substrate electrically; and a second electric contact part connected to the second semiconductor layer electrically.

Description

technical field [0001] The invention relates to a light-emitting diode, especially a light-emitting diode with longer luminous life, better luminous efficiency and more stable luminous brightness. Background technique [0002] Light-emitting diodes (LEDs) have been widely used in various fields, such as backlight modules, lighting fixtures, and display lights. However, since the heat energy generated by the light-emitting diodes cannot be removed smoothly, the temperature of the light-emitting diodes will gradually increase with the increase of use time, resulting in the gradual degradation of the luminous efficacy and luminous brightness. For this reason, the industry has made every effort to develop various ways to remove heat energy, such as various active heat dissipation devices and passive heat dissipation devices, hoping to effectively extract the heat energy accumulated inside the LED, so as to prolong its luminous life and increase its luminous efficiency. And impr...

AI Technical Summary

Problems solved by technology

[0005] But as mentioned above, when the known light emitting diode 1 is in operation, its active layer 13 generates light and generates considerable heat energy at the same time, and these heat energy are gradually accumulated inside the known light emitting diode 1 because they cannot be discharged smoothly, resulting in It is known that the temperature of the light-emitting diode 1 gradually increases

After the thermal energy accumulates to a certain extent, the light-emitting structure of the known light-emitting diode 1 is gradually destroyed, causing the light-emitting brightness of the known light-emitting diode 1 to gradually decrease, and eventually no more light can be emitted.

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