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What is VCOM

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seyyah
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2010/12/10 17:19:29 (permalink)
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What is VCOM

TFT has a Vcom input actually it's the tft driver's input. I think it's related to contrast etc. But if it's not supplied, nothing will be displayed on the screen. Driver also has a pol output. And it dictates us to adjust the Vcom signal according to pol signal. What's the idea of Vcom and how is it used? Is it a pulse or a constant voltage? Thanks.
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    McSparky
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    Re:What is VCOM 2011/02/06 08:10:24 (permalink)
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    This might be helpful, it helped me to understand VCOM

    http://www.intersil.com/data/an/an1208.pdf

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