Light emitting diode (LED) device characterized by wide color gamut display

Abstract

The invention discloses a light emitting diode (LED) device characterized bywide color gamut display. The LED device comprises a package body, an LED chip module and fluorescent powder adhesive, wherein the package body is provided with a package groove, the LED chip module is arranged at the bottom of the package groove, a chip of the LED chip module is a blue-light chip, and the fluorescent powder adhesive is arranged in the package groove and formed by mixing fluoride K<2>SiF<6>.Mn<4+> multi-peak red fluorescent powder, green fluorescent powder and silica gel. Through substituting the traditional fluorescent powder by the fluoride K<2>SiF<6>.Mn<4+> multi-peak red fluorescent powder, the red-light excitation efficiency, chromaticity coordinate position and half-peak width of the LED device are effectively improved, the color gamut coverage rate of a liquid crystal display product is increased, and compared with nitride red fluorescent powder, the LED device has the advantages that the luminous efficiency is obviously improved.

Description

technical field [0001] The invention relates to an LED device with wide color gamut display. Background technique [0002] LED is a solid-state semiconductor device that can directly convert electrical energy into light energy. It has the advantages of small size, low power consumption, long life, high brightness, low heat, and environmental protection. light source. [0003] Most LED devices used in liquid crystal display products use blue LED chips + phosphors to emit white light, and phosphors are the key factors that determine the color gamut of LED-backlit liquid crystal displays. Aluminate Y is mainly used in the market 3 Al 5 o 12 : Ce 3+ (YAG:Ce) as a phosphor, due to its poor color purity, the color gamut coverage is usually around 70% NTSC; the combination of nitride red phosphor and SiAlON:Eu green phosphor can improve the color gamut coverage To 80% NTSC, but the color gamut coverage is still difficult to reach more than 85% NTSC, and the luminous efficienc...

AI Technical Summary

Problems solved by technology

Aluminate Y is mainly used in the market 3 Al 5 o 12 : Ce 3+ (YAG:Ce) as a phosphor, due to its poor color purity, the color gamut coverage is usually around 70% NTSC; the combination of nitride red phosphor and SiAlON:Eu green phosphor can improve the color gamut coverage to 80% NTSC, but the color gamut coverage is still difficult to reach above 85% NTSC, and the luminous efficiency of LED devices is significantly lower than the previous technical solution

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