Patent ID: 7928937

Claim:
A light emitting device comprising: a first driver circuit for controlling switching between an on state and an off state of first and second switching transistors, the first driver circuit comprising a first shift register; a second driver circuit for controlling switching between an on state and an off state of first and second data selecting transistors, the second driver circuit comprising a second shift register; a third driver circuit; and a pixel comprising: a light emitting element; the first switching transistor and the second switching transistor for controlling a video signal input into the pixel; a first driving transistor and a second driving transistor whose gate voltages are controlled by the inputted video signal; the first data selecting transistor for controlling supply of drain current of the pixel's first driving transistor to the light emitting element; and the second data selecting transistor for controlling supply of drain current of the pixel's second driving transistor to the light emitting element, wherein gates of the pixel's first and the second data selecting transistors are electrically connected to a same selection line, wherein the pixel's first and the second data selecting transistors have different polarity from each other, wherein one of a source and a drain of the first data selecting transistor is electrically connected to one of a source and a drain of the first driving transistor, and the other one of the source and the drain of the first data selecting transistor is electrically connected to the light emitting element, wherein one of a source and a drain of the second data selecting transistor is electrically connected to one of a source and a drain of the second driving transistor, and the other one of the source and the drain of the second data selecting transistor is electrically connected to the light emitting element, wherein the third driver circuit is configured to input one bit of the video signal into a gate of the first driving transistor and another bit of the video signal into a gate of the second driving transistor in a first writing operation in one frame period and to input the one bit of the video signal into the gate of the first driving transistor in a second writing operation in the one frame period, and wherein the second driver circuit is configured to switch the first data selecting transistor from an on state to an off state and the second data selecting transistor from an off state to an on state during a transition from the first writing operation to the second writing operation.