Scan driver and organic light emitting display device having the same
AssigneeSamsung Display Co., Ltd.
InventorsGeun-Ho Cho, Yong-Sung Park
Life of this patent
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Abstract
A scan driver includes a plurality of stages for respectively outputting a plurality of scan signals, an N-th stage of the stages including a shift register for outputting an N-th carry signal based on a frame start signal or based on a carry signal from a previous stage, and an output control block for outputting the N-th carry signal as an N-th scan signal in a display mode, and for repeatedly outputting active periods of the N-th scan signal during an active period of the N-th carry signal in a sensing mode, wherein N is a positive integer.
Claims20
A scan driver comprising a plurality of stages for respectively outputting a plurality of scan signals, an N-th stage of the stages comprising:
- a shift register for outputting an N-th carry signal based on a frame start signal or based on a carry signal from a previous stage;
- and
- an output control block for outputting the N-th carry signal as an N-th scan signal in a display mode, and for repeatedly outputting active periods of the N-th scan signal during an active period of the N-th carry signal in a sensing mode,
- wherein N is a positive integer.
An organic light emitting display device comprising:
- a display panel comprising a plurality of pixels to be driven by a display mode and by a sensing mode;
- a data driver for providing a data voltage corresponding to a display image to the display panel in the display mode, and for providing a sensing voltage to the display panel based on a data control signal in the sensing mode;
- a scan driver for repeatedly generating and applying an active period of a scan signal to a scan line in the sensing mode;
- a sensing driver for repeatedly generating and applying an active period of a sensing signal to a sensing line corresponding to the scan line in the sensing mode;
- and
- a controller for performing a compensation with respect to the pixels based on sensing currents that are repeatedly generated at the pixels corresponding to the scan line in the sensing mode.
A scan driver comprising a plurality of stages for respectively outputting a plurality of scan signals, an N-th stage of the stages comprising:
- a shift register for outputting an N-th carry signal based on a frame start signal or based on a carry signal from a previous stage;
- an output control block for outputting the N-th carry signal as an N-th scan signal in a display mode, and for repeatedly outputting active periods of the N-th scan signal during an active period of the N-th carry signal in a sensing mode;
- and
- a buffer block for controlling a rising time and a falling time of the N-th scan signal output from the output control block,
- wherein N is a positive integer.
Dependencies are inferred from the claim text.