Display device for changing a sensing mode and operating method thereof
AssigneeSamsung Display Co., Ltd.
InventorsGyeong-Ub Moon, Yun-Ho Kim, Chui Kim, Jaeuk Choi
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Abstract
A display device includes: a display panel; an input sensor on the display panel; a panel driving circuit to drive the display panel, and to output a synchronization signal; and a sensor controller to control the input sensor. The sensor controller determines a sensing mode in response to the synchronization signal, and changes the sensing mode to a second sensing mode when the synchronization signal is activated in a first sensing mode.
Claims20
A display device comprising:
- a display panel;
- an input sensor on the display panel;
- a panel driving circuit configured to drive the display panel, and to output a synchronization signal, an active level of the synchronization signal indicating a start of an image frame;
- and
- a sensor controller configured to control the input sensor,
- wherein the sensor controller is configured to determine a sensing mode from among a first sensing mode and a second sensing mode in response to the synchronization signal having the active level, and to change the sensing mode to the second sensing mode when the synchronization signal is activated in the first sensing mode.
A display device comprising:
- a display panel configured to display an image in each of a plurality of continuous image frames in synchronization with a synchronization signal, an active level of the synchronization signal indicating a start of an image frame from among the plurality of continuous image frames;
- an input sensor comprising a first sensing electrode, and a second sensing electrode crossing the first sensing electrode and insulated from the first sensing electrode;
- and
- a sensor controller configured to transmit and receive a signal with the first sensing electrode and the second sensing electrode,
- wherein the sensor controller is configured to operate in each of the plurality of continuous image frames in a first sensing mode and a second sensing mode, and
- wherein, when the synchronization signal is activated while the sensor controller operates during a first sensing period in the first sensing mode, the sensor controller is configured to change an operating mode to the second sensing mode after the first sensing period is completed.
An operating method of a display device comprising a display panel, and an input sensor configured to operate in a first sensing mode and a second sensing mode, the method comprising:
- sensing a first input from the input sensor during a first sensing period of the first sensing mode;
- determining whether the first sensing period is completed;
- determining whether a flag signal indicating a state of a synchronization signal is a first value, an active level of the synchronization signal indicating a start of an image frame;
- and
- in response to determining that the first sensing period is completed and the flag signal is the first value, changing an operating mode to the second sensing mode during which a second input is sensed from the input sensor.
Dependencies are inferred from the claim text.