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Proceedings Paper

Design of LED backlight system used for ultra-slim LCD TV
Author(s): Xiuzhen Li; Guoheng Ma; Dongsheng Yang; Fei Liu; Lifang Wan; Zhonglian Qiao
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Paper Abstract

Large-size LED backlight is the new development trend of flat-panel TV industry. A large-sized ultra-slim edge-light type LED backlight is designed in this paper. Depending of the research of the LED manufacturers, LED is chose by the consideration of luminous efficiency, power consumption, structure design, etc. The LGP is designed through the optical design software; According to the specification and number of LED, the light-bar is designed to be double-layer MCPCB, and high voltage design is adopted in the driver control circuit which supports the PWM dimming; In order to achieve a better cooling effect, thermal design is carried out. The edge light type LED backlight designed in this paper, and backlight 9.9 mm thickness, 150W power, 5700nit center brightness, the uniformity is 82% by testing. It reaches a leading level of industry.

Paper Details

Date Published: 22 July 2010
PDF: 5 pages
Proc. SPIE 7749, 2010 International Conference on Display and Photonics, 77490X (22 July 2010); doi: 10.1117/12.869645
Show Author Affiliations
Xiuzhen Li, Beijing BOE CHATANI Electronics Co.,Ltd. (China)
Guoheng Ma, Beijing BOE CHATANI Electronics Co.,Ltd. (China)
Dongsheng Yang, Beijing BOE CHATANI Electronics Co.,Ltd. (China)
Fei Liu, Beijing BOE CHATANI Electronics Co.,Ltd. (China)
Lifang Wan, BOE Technology Group Co., Ltd. (China)
Zhonglian Qiao, Beijing BOE CHATANI Electronics Co., Ltd. (China)


Published in SPIE Proceedings Vol. 7749:
2010 International Conference on Display and Photonics

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