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Light-emitting diode (LED) device

A technology of light-emitting diodes and green light, which is applied to electrical components, electrical solid devices, circuits, etc., can solve problems such as heat decay, color shift, temperature sensitivity, and affect the overall efficiency and service life of color-sequential liquid crystal displays. Excellent stability, enhanced market competitiveness, and reduced characteristic differences

Inactive Publication Date: 2011-05-18
AU OPTRONICS CORP
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  • Abstract
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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

Method used

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Embodiment Construction

[0041] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

[0042] The invention discloses a light emitting diode device applied to a liquid crystal display device. In view of the poor efficiency of the green LED chip of the LED device in the prior art, and the red LED chip is too sensitive to temperature, resulting in heat decay and color shift, etc., the LED device of the present invention uses its blue light The light-emitting diode chip is combined with phosphor to form a green or red monochromatic light source, reducing the characteristic difference between different color light-emitting diode chips, so as to improve the overall efficiency of the liquid crystal display device.

[0043] A p...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/13H01L33/48H01L33/50
CPCH01L2224/48091
Inventor 王志麟柯韦志林睿腾
Owner AU OPTRONICS CORP
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