LCD driver for handheld

Hi, This is the first time I'm attempting to put a circuit together (well, its been a long time since my engineering).... Hence I need lot of help from many experts out there. First I had to choose an LCD display driver for my application. I am looking at dot-matrix type display and should at-least be 128x128 pixels. The application is for a hand-held, hence I also expect that it consumes low power. When I look at multiple data-sheets, I notice that the operating voltage is smaller (2.5-5V) but the LCD drive voltage is higher, mostly in the range >12V. I wonder if that'll be the case always.. I'm planning to power my device from two AA type batteries... and hence would like to know, if it would be possible or am i doing something very wrong! My application requirement is the following.

  1. should be able to power it with two AA type batteries
  2. the batteries should atleast last for 50hrs of operation (just for the display), don't worry about the power to other circuitry.

For this requirement could you suggest me appropriate display drivers? And LCD vendors if any? I'm open to hear any open views

Regards, Naren.

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naren
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