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Zhang X.-B.,Huadong Photoelectric Technique Institute of Anhui | Zhang X.-B.,Anhui University of Technology | Wang R.,Anhui University of Technology | Dong D.,Huadong Photoelectric Technique Institute of Anhui | And 4 more authors.
IEEE/OSA Journal of Display Technology | Year: 2012

In conventional liquid crystal display (LCDs), the backlight is set to maximum luminance regardless of the image which causes power waste and light leakage in the dark scenes. To circumvent these problems, the local dimming backlight is investigated. The algorithm based on details of the input image for the local dimming backlight in LCDs is proposed in this paper. Experimental results show that the proposed method achieves low power consumption and little image distortion ratio simultaneously. © 2006 IEEE.

Yang L.,Hefei University of Technology | Yang J.,Hefei University of Technology | Deng G.,Hefei University of Technology | Dong B.,Hefei University of Technology | And 2 more authors.
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | Year: 2014

A calculation method based on rectangular waveguide cavity theory for the open resonance structure with double-row grating and double-groove was proposed. The corrected formula of TE04-mode in the quasi optical cavity structure was proposed for the design optimization, and the electronic efficiency was improved effectively by enhancing the electric field intensity in electron beam tunnel. The cold dispersion character of double-row grating slow-wave structure and the impacts of different parameters on the high frequency characteristic were calculated and analyzed. The results show that the widths of the double-row grating and the electron beam tunnel have great impact on the dispersion character.

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