Light-emitting diode (LED) chip with capacitance structure and preparation method thereof

Abstract

The invention provides a light-emitting diode (LED) chip with a capacitance structure and a preparation method thereof. The LED chip comprises an N-type semiconductor layer, a multi-quantum well light-emitting layer, a P-type semiconductor layer, an N electrode and a P electrode, wherein the N electrode is electrically connected with the N-type semiconductor layer, the P electrode is electrically connected with the P-type semiconductor layer, the LED chip is electrically connected with the capacitance structure, the capacitance structure comprises a first conductive layer, a second conductive layer and a dielectric material layer, the first conductive layer and the second conductive layer are parallel to each other and are arranged at intervals, the dielectric material layer is arranged between the first conductive layer and the second conductive layer, the first conductive layer is electrically connected with the P electrode, the second conductive layer is electrically connected with the N electrode, and the first conductive layer and the second conductive layer in the capacitance structure and the P electrode and the N electrode of the LED chip are arranged in parallel. By additionally arranging the capacitance structure on the LED chip, the capacitance structure can play a protection role on the LED chip, ripple can be filtered, surge impact is prevented, and the reliability of the LED chip is improved.

Description

technical field [0001] The invention relates to the field of semiconductor chips, in particular to an LED chip with a capacitor structure and a preparation method thereof. Background technique [0002] A light-emitting diode (Light-Emitting Diode, LED) is a semiconductor electronic component that can emit light. This electronic component appeared as early as 1962. In the early days, it could only emit red light with low luminosity. Later, other monochromatic light versions were developed. Today, the light that can be emitted has covered visible light, infrared rays and ultraviolet rays, and the luminosity has also increased to a considerable extent. of luminosity. Because of its energy saving, environmental protection, safety, long life, low power consumption, low heat, high brightness, waterproof, miniature, shockproof, easy dimming, concentrated beam, easy maintenance, etc., it can be widely used in various indications, displays, decorations , backlight, general lighting...

AI Technical Summary

Problems solved by technology

[0009] The production of the LED chip is completed through the above process. However, the LED chip with the traditional structure only has a light-emitting structure design in the structure. In practical applications, the switching power supply is used for power management. Stroboscopic, making the light output of the chip not constant, unable to guarantee the stable light output of the light source without stroboscopic, which will affect people's vision, etc.

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