Organic electroluminescence display apparatus, driving...

Details Organic electroluminescence display apparatus, driving... Organic electroluminescence display apparatus, driving...

2008-07-31

2011-12-27

Shankar, Vijay (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S076000, C345S092000, C345S212000

Reexamination Certificate

active

08085258

ABSTRACT:
A driving circuit for driving an organic electroluminescence light emitting portion includes: a driving transistor of the n channel type having source/drain regions, a channel formation region and a gate electrode; an image signal writing transistor having source/drain regions, a channel formation region and a gate electrode; and a capacitor element. A first voltage for supplying current toward the organic electroluminescence light emitting portion through the driving transistor and a second voltage for preventing a potential difference between the second node and a cathode electrode provided on the organic electroluminescence light emitting portion from exceeding a threshold voltage of the organic electroluminescence light emitting portion are selectively applied from the power supply section to the first one of the source/drain regions of the driving transistor. An LDD (Lightly Doped Drain) structure is formed adjacent the first one of the source/drain regions of the driving transistor.

REFERENCES:
patent: 6356026 (2002-03-01), Murto
patent: 6693388 (2004-02-01), Oomura
patent: 2006-215213 (2006-08-01), None

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