Mr. Kiter He Profile

Kiter He

at Tsinghua Univ

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Proceedings Article | 5 January 2017 Paper

Wide color gamut LCD module using white light LED

Chang-Feng He, Ke-Yuan Qian, Han-Feng Wang

Proceedings Volume 10244, 102440O (2017) https://doi.org/10.1117/12.2263249

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LED is a kind of reliable source of LCD backlight. The characteristics of LED determine the color gamut and brightness of LCD TV. At present, the mainstream of white LED mainly uses blue chip coated with YAG phosphor to get white light, which can only guarantee the color gamut to 72%NTSC. Based on the color characteristics of backlight module, the method of calculating the color gamut of backlight module are introduced in detail. Coating blue chip by different kind of phosphors, a new LED backlight for LCD TV is developed. The color gamut is improved to more than 80%NTSC or more. At the same time, through the optimization of combination of blue chip with selected green phosphor and red phosphor excitation peak, this white LED solution can get the different color gamut and the highest color gamut, which will be 88%NTSC at most. This technique has been applied to a LCD TV.

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