Trouble on ESD of cellular phone!

[yemax]

i have some trouble on ESD of cellular phone!

when i discharged to my phone, the LCM will dead.but for a moment ,the

LCM can return.

what's matter with it. somebody can give me some advises.

 

[Rayengine]

It seems that the LCD controller is malfunction! And then the mobile phone controller try to initialize it again! It is a common scheme for ESD protection.

 

[hskao]

If air discharge voltage is 15KV, this soft failure was accepted.

 

[bschoo]

try a better grounding on the LCD metal bezel. If the LCD can still recover after a while, it is not too bad. At least there is no latch up of the driver.