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Ericsson T39 LCD and PIC (whar are the pin1 and pin8 for)

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pic lcd ericson

Hi all,
sorry for my english :)
I have an old Ericsson T39 GSM phone and I want to re-use the display ;).
I have searched on the net some infos and I have found these:
**broken link removed**
https://www.hardwarehacking.com/category/electronics/lcds/page/5/

I have only one question :).
What are the pin1 and pin8?
pin1 El1 (cca. 50V / 100 KHz) ???? :|:|:| ???

Thanks all.

P.S. I have readed the source but nothing it's explained :(

Bye
 

pic t39

input for high voltage that is applied to the EL lamp.

see datasheet HV857 (Supertex inc.)
 

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