Light-emitting diode (LED) device

Abstract

The invention discloses an LED device. The LED device comprises a substrate, a cup-like structure and a separation structure. The separation structure divides the accommodating space defined by the cup-like structure into a first block and a second block. A first blue light chip and a first package colloid are arranged in the first block, and a second blue light chip and a second package colloid are arranged in the second block. The second package colloid is mixed with a green phosphor powder for completely transforming the monochromatic emission spectrum of the second blue band of the second blue light chip to the monochromatic emission spectrum of the green band. The green phosphor powder is selected from one of silicates, nitrogen oxides, lutetium aluminum oxides and calcium scandium oxides. The liquid crystal display device in the invention can effectively reduce the difference of characteristics of three chips with different colors of the conventional LED device, and can greatly improve the market competitiveness of liquid crystal display devices with the LED device.

Description

technical field [0001] The present invention is related to light-emitting diodes, in particular to a light-emitting diode device used in liquid crystal display devices. A green or red monochromatic light source is formed by combining a blue light chip with phosphor powder to reduce the gap between chips of different colors in a traditional light-emitting diode device. The difference in characteristics improves its overall efficiency. Background technique [0002] In recent years, with the continuous development of display technology, Liquid Crystal Display (LCD) is undoubtedly the mainstream of flat panel display technology in terms of mass production scale and product application popularity. Among all kinds of liquid crystal displays, color sequential liquid crystal display (Color Sequential LCD, CS-LCD) can meet wide color requirements because it can improve the color gamut and saturation of the system, reduce material costs, and even greatly improve the electro-optic conv...

AI Technical Summary

Problems solved by technology

[0006] However, the LED backlight module 20 of the color sequential liquid crystal display needs to have the red LED chip 200, the green LED chip 202 and the blue LED chip 204 at the same time, because the red LED chip 200, the green LED chip 202 and the blue light emitting diode chip 204, these three kinds of light emitting diode chips with different primary colors have different photoelectric and life characteristics, and the efficiency of the green light emitting diode chip 202 is not good, and the red light emitting diode chip 200 is too sensitive to temperature , easily lead to heat decay and color shift, etc., seriously affecting the overall efficiency and service life of the color sequential LCD

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