Trapezoidal and Triangular Waveform Profiles for Reducing Power Dissipation in Liquid Crystal Displays
Trapezoidal and Triangular Waveform Profiles for Reducing Power Dissipation in Liquid Crystal Displays
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DOI：
10.1109/jdt.2008.920173
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发表时间：
2008-05
影响因子：
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通讯作者：
M. Govind;T. Ruckmongathan
中科院分区：
文献类型：
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作者：
M. Govind;T. Ruckmongathan
我们建议用梯形或三角形选择波形取代所有传统寻址技术中的矩形选择脉冲，以降低均方根响应液晶显示器的功耗。一个现实的分析，包括在寻址波形中的失真，梯形，三角形的轮廓，以及它们的等效物在离散域，即多步的轮廓和结果进行了比较。作为在选择脉冲结束时的校正电压的分析和施加的副产品，实现了被驱动到相同状态的像素之间的良好亮度均匀性。硬件复杂性的增加和成本是最小的，因为仅电压电平发生器电路被修改以利用新的波形轮廓实现功耗的降低。
We propose to replace the rectangular select pulses in all the conventional addressing techniques with either trapezoidal or triangular select waveforms to reduce the power dissipated in rms responding liquid crystal displays. A realistic analysis that includes the distortion in the addressing waveforms is presented for trapezoidal, triangular profiles, as well as their equivalents in discrete domain viz. the multi-step profiles and the results are compared. Good brightness uniformity among pixels that are driven to same state is achieved as a spinoff of the analysis and application of a correction voltage at the end of the select pulses. Increase in hardware complexity and the cost is minimal because just the voltage level generator circuit is modified to achieve reduction in power dissipation with new waveform profiles.