Display apparatus

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

Reexamination Certificate

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C345S078000

Reexamination Certificate

active

07808455

ABSTRACT:
Apparatus for compensating for a threshold voltage of a driver element having gate and drain electrodes which controls current flowing in a light emitting element effective in an on and off state. A capacitor is disposed between the gate electrode and a drain electrode when the light emitting element is in the on state emits light and when the light emitting element is in the off state, applying a voltage to the gate and the source of the driver element and a threshold voltage between the gate and drain electrodes is detected and stored in the capacitor, by writing a signal voltage closer to a potential which causes the driver element to turn off than the potential supplied to the gate electrode of the driver element when detecting a threshold value, the signal voltage being superimposed on the threshold voltage without losing the threshold voltage of the driver element.

REFERENCES:
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patent: 2005/0179399 (2005-08-01), Leo et al.
patent: 2005/0218946 (2005-10-01), Miyazawa
patent: 2006/0012310 (2006-01-01), Chen et al.
patent: 2006/0176250 (2006-08-01), Nathan et al.

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