Display device including photo sensor and driving method thereof
AssigneeSamsung Display Co., Ltd.
InventorHee Joon KIM
Life of this patent
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Abstract
Provided is a display device including a photo sensor and a driving method. The display device includes a first sensing unit and a second sensing unit that sense light, at least one sensing signal line that is connected with the first sensing unit and the second sensing unit and transmits a reference voltage for resetting the first sensing unit and the second sensing unit, a sensing signal processor that processes a sensing signal from the sensing signal line, and a backlight that irradiates internal light toward the first sensing unit and the second sensing unit during an internal light irradiation period which is repeated per frame, in which the first sensing unit is reset once and the second sensing unit is reset at least three times during each frame.
Claims28
A display device, comprising:
- a first sensing unit and a second sensing unit each configured to sense light;
- at least one sensing signal line that is connected with the first sensing unit and the second sensing unit and that is configured to transmit a reference voltage for resetting the first sensing unit and the second sensing unit;
- a sensing signal processor configured to process a sensing signal from the sensing signal line;
- and
- a backlight configured to irradiate internal light toward the first sensing unit and the second sensing unit during an internal light irradiation period which is repeated per frame,
- wherein the first sensing unit is reset once and the second sensing unit is reset at least three times during each frame.
A method of driving a display device including a first sensing unit and a second sensing unit each configured to sense light, and at least one sensing signal line connected with the first sensing unit and the second sensing unit, the method comprising:
- irradiating light from the display device toward the first sensing unit and the second sensing unit during an internal light irradiation period which is repeated for each of a number of frames;
- resetting the first sensing unit once during one frame, so as to transmit a reference voltage transmitted from the sensing signal line to the first sensing unit;
- and
- resetting the second sensing unit at least three times during one frame, so as to transmit the reference voltage to the second sensing unit.
Dependencies are inferred from the claim text.