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US 2011/0254880 A1Published application
Signal line driver circuit, light emitting device and driving method thereof
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorHajime KIMURA
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Abstract
Variation occurs in transistor characteristics. The present invention relates to a signal line driver circuit comprising a plurality of current source circuits respectively corresponding to a plurality of wirings, characterized in that: the plurality of current source circuits each comprise capacitor means and supply means; and the plurality of current source circuits each convert a supplied current into a voltage in accordance with a video signal, and supply a current corresponding to the converted voltage.
Claims7
A light emitting device comprising:
- a first pixel comprising a first light emitting element;
- a second pixel comprising a second light emitting element;
- a driver circuit comprising:
- a first circuit configured to store a first digital signal, and comprising a first output terminal;
- a second circuit configured to store a second digital signal, and comprising a second output terminal;
- a third circuit comprising a first input terminal electrically connected to the first output terminal, and a second input terminal, and a third output terminal;
- a fourth circuit comprising a third input terminal electrically connected to the second output terminal, and a fourth input terminal, and a fourth output terminal;
- a first wiring electrically connected to the third input terminal and the fourth input terminal;
- a first current source circuit electrically connected to the third output terminal and the first pixel;
- a second current source circuit electrically connected to the fourth output terminal and the second pixel;
- wherein each of the third circuit and the fourth circuit is configured to perform a logic operation of two input digital signals.
8 more elements
Dependencies are inferred from the claim text.