Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Reexamination Certificate
2005-11-01
2005-11-01
Dinh, Trinh Vo (Department: 2821)
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
C315S169300, C345S076000, C345S036000, C345S045000
Reexamination Certificate
active
06960889
ABSTRACT:
This invention relates to a method for driving an electro-luminescence display device. The method includes the steps of selecting a scan line by applying a scan signal to any one of a plurality of scan lines; and switching between a constant voltage and a constant current to apply data to a plurality of data lines crossing the scan lines. The method switches between the constant voltage source and the constant current source to drive the data lines. As a result, it increases the brightness uniformity and brightness. Therefore, the picture quality can be sustained at a high level.
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Kim Se Don
Park Kyung Vin
Tak Yoon Heung
Birch & Stewart Kolasch & Birch, LLP
Dinh Trinh Vo
LG Electronics Inc.
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