液晶与显示, 2012, 27 (6): 785, 网络出版: 2012-11-28
低功耗TFT-LCD驱动方法
Driving Method for Low Power Consumption in TFT-LCDs
低功耗 驱动 双栅之型反转 莫尔条纹 TFT-LCD TFT-LCD low power consumption driving dual-gate+Z-inversion Moiré phenomenon
摘要
为了降低薄膜晶体管液晶显示器(TFT-LCD)的功耗, 提出了一种新的双栅之型反转驱动方法。研究了双栅之型反转驱动技术的节能原理, 完成了相关结构设计、电路设计, 制作了35.6 cm(14 in)WXGA(1 366 RGB×768)样品, 测试并分析了节能效果。结果表明, 该技术可以有效降低TFT-LCD的功耗, 在显示彩条画面的情况下, 液晶屏模拟电源功耗降低了70%(191 mW)。分析了出现的莫尔条纹问题, 并提出了解决方案。该研究为降低TFT-LCD及其他显示设备的功耗提供了一种驱动方法及设计参考。
Abstract
A dual-gate + Z-inversion (DZi) driving method was proposed to reduce power consumption of thin-film transistor liquid crystal display (TFT-LCD). The power saving principle of DZi driving was researched, the structure design and circuit design were finished, 35.6 cm(14 in) WXGA (1 366 RGB×768) samples were manufactured, and the power saving effect was measured and analyzed. As results, DZi can save TFT-LCD power consumption in effect, such as panel AVDDS power reduces 70% (191 mW) when display color-bar pattern. Moiré phenomenon that appeared in DZi module was analyzed, and solutions were proposed. The research established a driving method and design reference for lower power consumption in TFT-LCDs and other displays.
商广良, 赵天月, 赵星星, 王强涛, 姚琪, 杨亚锋, 张玉婷, 张凯亮, 冷长林, 张丽蕾, 金瑞润, 柳在一, 王刚. 低功耗TFT-LCD驱动方法[J]. 液晶与显示, 2012, 27(6): 785. SHANG Guang-liang, ZHAO Tian-yue, ZHAO Xing-xing, WANG Qiang-tao, YAO Qi, YANG Ya-feng, ZHANG Yu-ting, ZHANG Kai-liang, LENG Chang-lin, ZHANG Li-lei, KIM Sean, RYU Jai-il, WANG Gang. Driving Method for Low Power Consumption in TFT-LCDs[J]. Chinese Journal of Liquid Crystals and Displays, 2012, 27(6): 785.
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