Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2005.07a
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- Pages.438-440
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- 2005
The Improvement of color reproduction ratio used to CCFL with high color rendering characteristic in TFT-LCD
고연색 CCFL을 이용한 TFT-LCD 색재현율의 향상
- Park, Ki-Duck (BOE HYDIS TECHNOLOGY) ;
- Song, Yong-Ki (BOE HYDIS TECHNOLOGY) ;
- Park, Doo-Sung (BOE HYDIS TECHNOLOGY) ;
- Kim, Seo-Yoon (BOE HYDIS TECHNOLOGY) ;
- Lim, Young-Jin (BOE HYDIS TECHNOLOGY)
- Published : 2005.07.07
Abstract
At present, characteristic of high color reproduction for LCD TV is needed in Display market according to start mass production of LCD TV. Therefore development target for LCD is focused on improvement of color reproduction. The improving methods of high color reproduction are alteration of color Filter or Red, Green, Blue phosphor alteration of CCFL. But decrease of luminance and panel transmittance is caused by alteration of Color Filter. Accordingly, we completed LCD with high color reproduction by the most suitable emission spectrum of CCFL phosphor at panel with conventional color filter. In this experiment, we knew that LCD applied to CCFL with high color rendering characteristic had color reproduction range of 81% compared with NTSC in CIE color coordinate. According to increase of intensity peak and alteration of Red, Green, Blue phosphor spectrum, we made LCD with high color reproduction characteristic. In conclusion we achieved improvement of color reproduction ratio by alteration of CCFL phosphor without changing color filter.