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Problem in lcd panel driving voltage

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arul_chennai

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Hi,
I am working on VL-FS-COG-BCD-12864-XX LCD module. i made communication between LCD and AT91SAM7SE512.
As per the specification of the Module,require 24v to drive the display panel.

I have tried with 2.2uf and 4.7uf as decoupling capacitor.but i can get driving voltage upto 17v.sometimes it reduces to 6v to 10v.

Using this voltage,i can see only scan line.i cant clear the whole display.then how to generate panel driving voltage of 24v.
 

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