High colour-rendering white light LED and manufacturing method thereof

Abstract

The invention discloses a high colour-rendering white light LED and a manufacturing method thereof. The LED comprises: a high-efficient heat dissipation aluminum pedestal which is provided with a groove, a first gold indium tin alloy layer, a silicon sinking layer, a LED high voltage chip, a gold thread and a silica gel layer, wherein the first gold indium tin alloy layer, the silicon sinking layer, the LED high voltage chip, the gold thread and the silica gel layer are successively arranged in the groove of the high-efficient heat dissipation aluminum pedestal from bottom to top. One side of the silicon sinking layer is provided with a circuit board and the other side is plated with a second gold indium tin alloy layer. The first gold indium tin alloy layer is fixedly connected with the second gold indium tin alloy layer. The LED high voltage chip is electrically connected with the circuit board arranged on the silicon sinking layer through the gold thread. The silica gel layer is infused into the groove and is filled in the whole groove. The LED high voltage chip comprises: a green-light high-voltage chip, a blue-light high-voltage chip and a red-light high-voltage chip. The green-light high-voltage chip, the blue-light high-voltage chip and the red-light high-voltage chip are connected parallelly with each other and then the chips are electrically connected with the circuit board. By using the LED and the method of the invention, a stable and reliable high colour-rendering white light source can be obtained without using phosphors.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a high color rendering white light LED and a manufacturing method thereof. Background technique [0002] At present, white light-emitting diodes are more and more widely used in the lighting field because of their remarkable energy-saving and environmental protection effects. The white light generation method of existing white light diodes is usually to coat the YAG phosphor powder on the blue light-emitting chip. Part of the blue light encounters the phosphor powder and emits yellow light, and the yellow light mixes with the remaining blue light to emit white light. Due to the fast light decay of the YAG phosphor, the stability of the white light-emitting diode is poor, the reliable use time is short, the color rendering of the white light produced is poor, and the heat dissipation of the high-power device is poor. [0003] How to improve the heat dissipation and white lig...

AI Technical Summary

Problems solved by technology

Due to the fast light decay of YAG phosphor, the stability of white light-emitting diodes is poor, the reliable use time is short, the color rendering of white light produced is poor, and the heat dissipation of high-power devices is poor.

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