| Title of Invention |
A METHOD TO DRIVE LCD |
| Abstract |
ABSTRACT The largest transition in the select waveform of successive approximation technique is eliminated to reduce power dissipation in liquid crystal displays. Power dissipation in the driver circuit is analyzed for gray scale images for several select sequences. They are compared and new select sequences are proposed to achieve low power dissipation. An combination of pulse width modulation for MSBs and pulse height modulation for LSBs so as to form discrete trapezoidal waveform to reduce peak amplitude of select and data waveforms to achieve a low supply voltage and low power dissipation in the driver circuit. Figure 4. |
| Full Text |
FIELD OF THE INVENTION
Instant disclose is related to low power technique for gray shades in Liquid Crystal displays (LCDs). Method to achieve low power dissipation in LCDs with high efficacy is disclosed here. Addressing waveforms are modified to achieve low supply voltage and low power. Average power dissipation in drivers of LCD is analyzed and compared for several line-by-line addressing techniques that are based on energy multiplexing. |
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