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US 12,688,821 B2Granted
Display device including light sensing pixel
AssigneeSamsung Display Co., Ltd.
InventorsChul Kim, Jongyeop An, Dongwook Yang
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Abstract
A display device includes a display panel including a light-emitting pixel including a light-emitting element, and a light-sensing pixel including an organic photodiode, and configured to reset the organic photodiode to a reset voltage in response to a global reset signal, a data driver configured to provide a data signal to the light-emitting pixel, a scan driver configured to provide a scan signal to the light-emitting pixel and to the light-sensing pixel, and a readout circuit connected to the light-sensing pixel through a readout line, and configured to change at least one of the global reset signal or the reset voltage between a first sensing mode and a second sensing mode.
Claims19
A display device comprising:
- a display panel comprising a light-emitting pixel comprising a light-emitting element, and a light-sensing pixel comprising an organic photodiode, and configured to reset the organic photodiode to a reset voltage in response to a global reset signal;
- a data driver configured to provide a data signal to the light-emitting pixel;
- a scan driver configured to provide a scan signal to the light-emitting pixel and to the light-sensing pixel;
- and
- a readout circuit connected to the light-sensing pixel through a readout line, and configured to change at least one of the global reset signal or the reset voltage between a first sensing mode and a second sensing mode,
- wherein the first sensing mode is a fingerprint-sensing mode, and the second sensing mode is a photoplethysmography-sensing mode,
- wherein, in the fingerprint-sensing mode, the light-emitting pixel in a first sensing region is configured to emit light, and the light-sensing pixel in the first sensing region is configured to sense reflected light, and
- wherein, in the photoplethysmography-sensing mode, the light-emitting pixel in an adjacent region adjacent to a second sensing region is configured to emit light, and the light-sensing pixel in the second sensing region is configured to sense reflected light.
5 more elements
An electronic device comprising:
- a processor configured to provide input image data;
- and
- a display device configured to receive the input image data from the processor, and to display an image based on the input image data, the display device comprising:
- a display panel comprising a light-emitting pixel comprising a light-emitting element, and a light-sensing pixel comprising an organic photodiode, and configured to reset the organic photodiode to a reset voltage in response to a global reset signal;
- a data driver configured to provide a data signal to the light-emitting pixel;
- a scan driver configured to provide a scan signal to the light-emitting pixel and to the light-sensing pixel;
- and
- a readout circuit connected to the light-sensing pixel through a readout line, and configured to change a voltage level of the reset voltage among a normal mode, a fingerprint-sensing mode, and a photoplethysmography-sensing mode,
- wherein, in the fingerprint-sensing mode, the light-emitting pixel in a first sensing region is configured to emit light, and the light-sensing pixel in the first sensing region is configured to sense reflected light, and
- wherein, in the photoplethysmography-sensing mode, the light-emitting pixel in an adjacent region adjacent to a second sensing region is configured to emit light, and the light-sensing pixel in the second sensing region is configured to sense reflected light.
7 more elements
An electronic device comprising:
- a processor configured to provide input image data;
- and
- a display device configured to receive the input image data from the processor, and to display an image based on the input image data, the display device comprising:
- a display panel comprising a light-emitting pixel comprising a light-emitting element, and a light-sensing pixel comprising an organic photodiode and configured to reset the organic photodiode to a reset voltage in response to a global reset signal;
- a data driver configured to provide a data signal to the light-emitting pixel;
- a scan driver configured to provide a scan signal to the light-emitting pixel and to the light-sensing pixel;
- and
- a readout circuit connected to the light-sensing pixel through a readout line, and configured to change at least one of a voltage level, a timing, a waveform, or a slew rate of the global reset signal among a normal mode, a fingerprint-sensing mode, and a photoplethysmography-sensing mode,
- wherein, in the fingerprint-sensing mode, the light-emitting pixel in a first sensing region is configured to emit light, and the light-sensing pixel in the first sensing region is configured to sense reflected light, and
- wherein, in the photoplethysmography-sensing mode, the light-emitting pixel in an adjacent region adjacent to a second sensing region is configured to emit light, and the light-sensing pixel in the second sensing region is configured to sense reflected light.
7 more elements
Dependencies are inferred from the claim text.