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US 2023/0409147 A1Published application
Detecting device
AssigneeJapan Display Inc.
InventorYuto KAKINOKI
Life of this patent
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Abstract
A detecting device includes a sensor unit having a detection region in which a plurality of detection electrodes are arrayed, and a detector configured to supply a drive signal to the detection electrodes and detect a position of an object to be detected in a space on the detection region based on an output value of each of the detection electrodes.
Claims8
A detecting device comprising:
- a sensor unit having a detection region in which a plurality of detection electrodes are arrayed;
- and
- a detector configured to supply a drive signal to the detection electrodes and detect a position of an object to be detected in a space on the detection region based on an output value of each of the detection electrodes, wherein
- the sensor unit comprises a peripheral electrode provided along an outer periphery of the detection region,
- the detector calculates a first detected value based on the output value of the detection electrode in a first period for supplying the drive signal to the peripheral electrode,
- the detector calculates a second detected value based on the output value of the detection electrode in a second period for supplying a voltage signal different from the drive signal to the peripheral electrode, and
- the detector calculates spatial coordinates of the object to be detected in the space on the detection region using a value calculated based on a difference value between the first detected value and the second detected value.
4 more elements
Dependencies are inferred from the claim text.