Rosenberg, Klein & Lee
LED structure applied to backlight source
An LED structure is applied to a backlight source to set a white light of a backlight module at a standard D65 position of the CIE1931 chromaticity coordinates and used together with a display module. A red phosphor for emitting a red light, a yellow phosphor for emitting a yellow light, and a blue light LED chip are provided. The mixing ratio of the red phosphor to the yellow phosphor is controlled within a range of (2.33−1):1, so that the original LED white light falls within a region enclosed by ccy≦1.8*ccx−0.12, ccy≧1.8*ccx−0.336, ccy≦0.33 and ccy≧0.15 of the CIE1931 coordinates. Since the red phosphor does not absorb or convert yellow light, the brightness loss of the yellow light that excites the yellow phosphor is minimized. A color filter may be installed to achieve better NTSC effect and luminous efficacy.
Unity Opto Technology Co., Ltd.
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Y02B H01L H01L
additional inventional inventional
Po-Hsiang Chih-Chao Ru-Shi Hung-Li Chun-Che
Chung Chang Liu Yeh Lin