Design of LED backlight system used for ultra-slim LCD TV

Xiuzhen Li; Guoheng Ma; Dongsheng Yang; Fei Liu; Lifang Wan; Zhonglian Qiao

doi:10.1117/12.869645

21 July 2010 Design of LED backlight system used for ultra-slim LCD TV

Xiuzhen Li, Guoheng Ma, Dongsheng Yang, Fei Liu, Lifang Wan, Zhonglian Qiao

Proceedings Volume 7749, 2010 International Conference on Display and Photonics; 77490X (2010) https://doi.org/10.1117/12.869645
Event: 2010 International Conference on Display and Photonics, 2010, Nanjing, China

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.

Citation Download Citation

Xiuzhen Li, Guoheng Ma, Dongsheng Yang, Fei Liu, Lifang Wan, and Zhonglian Qiao "Design of LED backlight system used for ultra-slim LCD TV", Proc. SPIE 7749, 2010 International Conference on Display and Photonics, 77490X (21 July 2010); https://doi.org/10.1117/12.869645

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