Selective pixel driver and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorsWontae Kim, Jihye Kim, Jae-Hyeon Jeon
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Abstract
A pixel driver includes a plurality of stages, with each stage including a pixel driving signal generator, a shift register, and a selection circuit. The pixel driving signal generator generates a pixel driving signal. The shift register receives image data and the pixel driving signal and generates an output control signal for determining whether to output the pixel driving signal based on the image data and the pixel driving signal. The selection circuit selectively outputs the pixel driving signal in response to the output control signal.
Claims21
A pixel driver comprising:
- a plurality of stages,
- wherein each of the plurality of stages includes:
- a pixel driving signal generator configured to generate a pixel driving signal;
- a shift register configured to receive image data and the pixel driving signal and to generate an output control signal for determining whether to output the pixel driving signal based on the image data and the pixel driving signal;
- and
- a selection circuit configured to selectively output the pixel driving signal or an off signal having a preset voltage level in response to the output control signal.
A display device comprising:
- a display panel including a plurality of pixels;
- a data driver configured to supply a data signal to the plurality of pixels;
- a pixel driver including a plurality of stages, and configured to supply a pixel driving signal to the plurality of pixels;
- and
- a timing controller configured to generate control signals for controlling the data driver and the pixel driver, wherein each of the plurality of stages includes:
- a pixel driving signal generator configured to generate the pixel driving signal;
- a shift register configured to receive image data and the pixel driving signal and to generate an output control signal for determining whether to output the pixel driving signal based on the image data and the pixel driving signal;
- and
- a selection circuit configured to selectively output the pixel driving signal or an off signal having a preset voltage level in response to the output control signal.
A pixel driver comprising:
- a plurality of stages,
- wherein an nth stage of the plurality of stages includes:
- a pixel driving signal generator configured to generate a scan signal or an emission control signal as a pixel driving signal and output the pixel driving signal to a shift register and an (n+1)th stage;
- the shift register configured to receive image data and the pixel driving signal, to generate an output control signal based on the image data and the pixel driving signal, and output the output control signal to a selection circuit;
- and
- the selection circuit configured to receive the output control signal and to output one of the pixel driving signal or an off signal in response to the output control signal, and wherein n is a natural number greater than or equal to 1.
Dependencies are inferred from the claim text.