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US 12,433,084 B2Granted
Display device
AssigneeLG Electronics Inc.
InventorsByunghun Park, Sunghwan Kim, Hongkyu Lee
Life of this patent
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Abstract
A display device may include first to third semiconductor light-emitting devices in each of a plurality of pixels, a sensing element, and a circuit block in each of the plurality of pixels. The sensing element may include a fourth semiconductor light-emitting device. The first to third semiconductor light-emitting devices may emit light during the first section by a power source having a forward bias. The fourth semiconductor light-emitting device may be light-received by a power source having a reverse bias.
Claims15
A display device, comprising:
- first to third semiconductor light-emitting devices in each of a plurality of pixels;
- a sensing element;
- and
- a circuit block in each of the plurality of pixels,
- wherein an image is configured to be displayed in units of frames, and
- wherein one frame comprises a first section driven in an emission mode and a second section driven in a sensing mode,
- wherein the first to third semiconductor light-emitting devices are configured to emit light during the first section by a power source having a forward bias,
- wherein the sensing element comprises a fourth semiconductor light-emitting device,
- wherein a first sensing signal is configured to output from the fourth semiconductor light-emitting device during the second section by a power source configured to output a power having a reverse bias,
- wherein a sensitivity adjustment circuit is configured to change a reference value to adjust a sensitivity of the first sensing signal, and
- wherein the sensitivity adjustment circuit comprises an image brightness calculator, a frame image duplication detector, and a reference value calculator.
8 more elements
Dependencies are inferred from the claim text.