White-light LED chip with same spectrum in all directions and synchronous light attenuation and manufacturing method

Abstract

The invention provides a white-light LED chip with the same spectrum in all directions and synchronous light attenuation and a manufacturing method. The white-light LED chip comprises a substrate; a light-emitting film layer which is arranged on one side of the substrate; a protective layer which is arranged on the side edge of the white light LED chip, wherein the protective layer has a reflection effect so that the white light LED chip can emit light from one side; and a three-dimensional fluorescent glue layer which is arranged on the light emitting surface, wherein the thickness of each position of the three-dimensional fluorescent glue layer is matched with the blue light intensity at the corresponding position. That is to say, it is possible to obtain a product, a white light LED chip is set to emit light from a single surface, and the thickness of each position of the three-dimensional fluorescent glue layer is matched with the blue light intensity of the corresponding position,so that the spectrum of each position of the illuminated area is not different in space, and the spectrum of the blue light chip and the fluorescent glue layer is not different in time when the bluelight chip and the fluorescent glue layer are subjected to synchronous light attenuation in the long-term use process.

Description

technical field [0001] The invention relates to the technical field of LED chips, more specifically, to a white LED chip with isotropy and same spectrum and synchronous light attenuation and a manufacturing method thereof. Background technique [0002] As a lighting source, LED is energy-saving and environmentally friendly. It has opened a new era of human lighting and has been closely related to people's lives. [0003] Although LED lamps are gradually replacing traditional lighting sources such as incandescent lamps and fluorescent tubes, they still have some other defects. [0004] Traditional lighting sources, such as incandescent lamps and fluorescent lamps, have the same spectral spatial distribution, that is, the spectrum of each position in the illuminated area is consistent, and they are isotropic light sources. The spectra before and after aging are different in intensity, but the shape of the spectral lines is the same, which means that the light attenuation of e...

AI Technical Summary

Problems solved by technology

[0005] However, there are obvious differences in the spatial distribution of the spectrum of LED lighting, and its spectrum is anisotropic in space. There are obvious differences in the spectral shape before and after aging, and its light decay is not synchronized.

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