Display and method of driving pixel

Details Display and method of driving pixel Display and method of driving pixel

2006-02-01

2009-06-23

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S077000, C345S087000, C345S092000

Reexamination Certificate

active

07551152

ABSTRACT:
In a pixel circuit formed by using a MOS process, a constant current is applied from a second transistor (T2) as a constant current source to an organic EL device coupled to a third transistor (T3) so that the organic EL device emits light, during the period when the third transistor (T3) is in the conductive state. The third transistor (T3) is switched on and off based on its gate voltage dependent upon a signal value written to a capacitor (Cs) and a ramp signal voltage (Vcs). Thus, the organic EL device emits light during the period dependent upon the signal value. That is, displaying operation is implemented with gray-scale being controlled according to a video signal value.

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