High color rendering light emitting diode and manufacture method thereof

Abstract

Provided is a high color rendering light emitting diode, comprising a support and a support pin. A blue ray LED chip and a red ray LED chip are fixedly arranged in a cup chamber. The blue ray LED chip is connected with the red ray LED chip in series. The blue ray LED chip and the red ray LED chip which are connected in series are connected to the support pin. The cup chamber is provided with yellow fluorescent glue which covers the blue ray LED chip and the red ray LED chip. According to the invention, a crimson color is added in the spectrum and the problem that an R9 test index is too low can be effectively solved.

Description

technical field [0001] The invention relates to light-emitting diode technology, in particular to a high-color-rendering light-emitting diode and a manufacturing method thereof. Background technique [0002] With the development of economy and society, the continuous progress of science and technology, and the continuous improvement of the industrialization of light-emitting diodes, LED lighting has gradually become popular. At present, there are more and more LED lighting fixtures for various professional fields on the market. These fields The requirements for light are high, especially for places such as exhibition halls, galleries, offices, etc., especially for the high reducibility of colors. [0003] To measure the color reproduction of the light source, it is generally expressed by the color rendering index, which is composed of 14 indicators (see the table below). By comparing each color, comparing its similarity, and then calculating and synthesizing it. [0004] ...

AI Technical Summary

Problems solved by technology

[0006] The color rendering index of the light source is greater than 85, which is considered to be suitable for lighting in all places. However, traditional white LEDs are generally made of blue LED chips and yellow phosphors. The white light emitted only has blue and yellow spectra. The width is small and it is a discontinuous spectrum, and it is impossible to restore all the colors, especially because ordinary white light lacks a deep red spectrum, so its color rendering index cannot be effectively improved

In addition, for high color rendering white LEDs, there is another production method: red phosphor powder can be added to the fluorescent glue to achieve the effect of spectral compensation. However, due to the low excitation efficiency of the red phosphor powder, it will make the LED lighting The overall luminous efficiency is reduced, and the performance is still insufficient. It cannot meet the lighting requirements of the professional field, and it is not conducive to the application and promotion of LED lighting as a whole.

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