Patent ID: 11914817
Assignee: WACOM CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A display device that carries out a display of image data by driving each of a plurality of pixel electrodes, the display device comprising:
a touch panel including a sensor electrode, and a touch sensor communicating with an active pen using a frequency belonging to a predetermined frequency band by a charge induced in the sensor electrode; and
a display surface disposed to overlap with the sensor electrode,
wherein the display device is operable to suppress at least one frequency component included in the predetermined frequency band in capacitive noise that occurs in the sensor electrode due to a voltage vibration in an interconnect in the display device caused by driving of the plurality of pixel electrodes,
wherein the display device selectively operates in either of a first operation mode in which driving of the plurality of pixel electrodes suppresses the at least one frequency component included in the predetermined frequency band in the capacitive noise that occurs in the sensor electrode or a second operation mode in which driving of the plurality of pixel electrodes does not suppress the at least one frequency component included in the predetermined frequency band in the capacitive noise that occurs in the sensor electrode,
wherein the capacitive noise in the first operation mode is suppressed compared with the capacitive noise in the second operation mode
wherein the second operation mode is a mode in which image quality of the display device is prioritized over accuracy of detection of the active pen by the touch sensor, and
wherein the first operation mode is a mode in which accuracy of detection of the active pen by the touch sensor is prioritized over image quality of the display device.