A kind of full-angle LED light source and preparation method thereof

Abstract

The invention discloses an all-angle luminous LED light source and a preparation method thereof. The LED light source comprises a bracket, a chip and a wavelength conversion layer; the bracket comprises a plane main body and two pins; the chip is fixedly arranged on the upper end face of the plane main body and is connected to the two pins through a bonding wire; the wavelength conversion layer is covered above the plane main body; therefore, the chip is packaged in the wavelength conversion layer; the two pins are respectively connected to the cathode and the anode of a power supply. A reflection cup is canceled; the chip is fixed on the plane main body; the activation angles of the light are greatly improved; the emission angles of the light are improved to about 250 degrees; the phenomena that the wavelength conversion layer covered on the chip is small in size and thin in thickness so that the aperture uniformity is poor and the color temperature deviates are solved; the uniformity of the apertures is improved; the shade is eliminated; and the color temperature is relatively even.

Description

technical field [0001] The invention relates to an LED light source and a preparation method thereof. Background technique [0002] The core part of LED light emission is a PN junction die composed of P-type and N-type semiconductors. When the minority carriers injected into the PN junction recombine with the majority carriers, visible light, ultraviolet light or near-infrared light is emitted. However, the photons emitted by the PN junction area are non-directional, that is, each direction has the same probability of emission, but not all the light generated by the die can be released, which mainly depends on the quality of the semiconductor material, the structure and geometry of the die , encapsulate the internal structure and encapsulation material. [0003] At present, the LED light source includes a light-emitting diode chip 1', the light-emitting diode chip is located in the reflective cup 2', the reflective cup is fixed on the support 3', and the light-emitting diod...

AI Technical Summary

Problems solved by technology

This kind of LED light source is affected by the angle of the bracket, reflective cup and mold strip, so that the light angle is below 130°, the light diffusion angle is limited, the light cannot reach the back, and will form a dark shadow

In addition, due to the influence of the size of the reflective cup, the thickness of the wavelength conversion layer covering the light-emitting diode chip is relatively thin and the volume is small. During the production process, phenomena such as settlement and uneven dispersion are more likely to occur, which further leads to the distortion of the aperture. Poor consistency, color temperature deviation, etc.

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