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PostPosted: Wed Jan 30, 2008 19:29 
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Joined: Wed Jan 30, 2008 19:01
Posts: 1
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Datasheet http://www.tianma.com/web/uploads/spec/719TM24064BDBW.pdf?PHPSESSID=4d8abcf455e06b03e59901d5f23b31ab

I just got a cheap graphic lcd from ebay and I need your help to get -6V to my LCD.
If I use this schematic.
Image
Image

Please bear with me I'm an electronic newbie. Here are my noob questions.
I just wanna make it as clear as possible.
1) What are the value of R1 and R2 in order to get Vout = -6V ?
2) What is the value of Vin (Is it 12V or 5V?)
3) What is the value of voltage of C2 and C3 ?
4) According to the datasheet, this LCD is using Transflective EL Backlight
and grey mode stn positive. Do I need to modify the above schemetic to get the backlight working ?

Any help would be appreciate.
:roll:


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