Light emitting display on a portable communication device...

Details Light emitting display on a portable communication device... Light emitting display on a portable communication device...

H - Electricity

04

Q

H04Q 7/32 (2006.01) H04M 19/04 (2006.01)

Patent

CA 2325673

A light emitting display on a mobile phone for incoming phone calls comprises an electro luminescent lamp, and a control circuit to mount on the battery of the mobile phone. The control circuit further comprises a signal receive unit, an automatic control unit, a reverse changed voltage rising unit, and switching drive unit.

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