High color gamut LED lamp bead and side-entry backlight source thereof

Abstract

The present invention discloses a high color gamut LED lamp bead, including an LED bracket, a blue chip, a green chip, a heat insulating silica gel, and fluorescent glue. The blue chip and the green chip are respectively mounted on two sides of a bottom of the LED bracket. The heat-insulating silica gel is disposed on the top of the blue chip and the green chip. The fluorescent glue is disposed onthe top of the LED bracket, and the blue chip and the green chip are wrapped in the fluorescent glue. In the present invention, the blue chip and the green chip matches a red phosphor, and a surfaceof the chip is coated with the heat-insulating silica gel, so that a value of NTSC color gamut in a display field can be improved, a LED light output can be increased, a service life of the LED can beextended, and the quality of the lamp bead to withstand various harsh environments can be improved.

Description

technical field [0001] The invention relates to the field of LED lamps, in particular to a high color gamut LED lamp bead and a side-entry backlight source thereof. Background technique [0002] As an emerging solid-state lighting source, LED has the characteristics of small size, long life, good reliability, energy saving and environmental protection, and has been widely used in lighting and display fields. With the rapid development of LED backlight technology, consumers have high expectations for LED TVs. The demand for color gamut and other aspects is increasing day by day, requiring richer colors, better layering, and higher color reproduction. [0003] Whether in the traditional method, red, green or yellow phosphors are mixed with encapsulant, and then dot-coated on the blue chip to form white LED through light color combination, or red, green and blue chips are mixed to form white light, or Quantum dot films and quantum dot tubes have the following defects: [0004...

AI Technical Summary

Problems solved by technology

[0004] ①The current commercial phosphors are mostly YAG powder or silicate, nitride phosphor, KSF phosphor, β-SiAlON, and the color gamut can only reach 72%-93%;

[0005] ② The excitation efficiency of phosphor is low, and the improvement of color gamut can only be achieved by increasing the dosage, which is far from meeting the requirements of today's society for lower energy consumption, higher energy efficiency and higher color gamut;

[0006] ③R, G, B three-color LED chips are difficult to mix light, and there are also problems with heat dissipation, and the drive control system is more complicated;

[0007] ④Current commercial quantum dot materials are easily affected by temperature and humidity and lead to failure. At the same time, due to the complex preparation process of quantum dots, low output, poor stability, and high price, they have not been fully popularized

[0008] ⑤At present, the LEDs on the market adopt the traditional packaging form, which is directly filled with glue, which not only reduces the brightness output of the package, but also shortens the service life in harsh environments

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