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US 12,608,109 B2Granted
Detection device having peripheral region detection electrodes
AssigneeMagnolia White Corporation
InventorsHiroshi Yamaguchi, Naoki Takada
Life of this patent
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Abstract
A detection device includes a plurality of first detection electrodes disposed in a matrix of rows and columns in a detection region of a substrate, at least one second detection electrode disposed in a peripheral region outside the detection region, positioned adjacent to some of the plurality of the first detection electrodes, and provided along a side of the detection region, and a coordinate calculation circuit configured to calculate a detection position of a detection target body.
Claims16
A detection device comprising:
- a plurality of first detection electrodes disposed in a matrix of rows and columns in a detection region of a substrate;
- a plurality of second detection electrodes disposed in a peripheral region outside the detection region, positioned adjacent to some of the plurality of the first detection electrodes, and provided along a side of the detection region;
- a coordinate calculation circuit configured to calculate a detection position of a detection target body;
- and
- a shield electrode provided in the peripheral region and surrounding outside of the plurality of first detection electrodes and the plurality of second detection electrodes, wherein
- an inner edge of the shield electrode is outside outer edges of the plurality of second detection electrodes in a plan view, and
- the shield electrode is supplied with a signal having the same phase as signals to the plurality of first detection electrodes and the plurality of second detection electrodes.
4 more elements
A detection device comprising:
- a plurality of first detection electrodes disposed in a matrix of rows and columns in a detection region of a substrate;
- a plurality of second detection electrodes disposed in a peripheral region outside the detection region, positioned adjacent to some of the plurality of the first detection electrodes, and provided along a side of the detection region;
- a coordinate calculation circuit configured to calculate a detection position of a detection target body;
- and
- a shield electrode provided in the peripheral region and surrounding outside of the plurality of first detection electrodes and the plurality of second detection electrodes, wherein
- an inner edge of the shield electrode is outside outer edges of the plurality of second detection electrodes in a plan view, and
- a time constant of the plurality of second detection electrodes is equivalent to a time constant of each of the plurality of first detection electrodes in effect.
4 more elements
A detection device comprising:
- a plurality of first detection electrodes disposed in a matrix of rows and columns in a detection region of a substrate;
- a plurality of second detection electrodes disposed in a peripheral region outside the detection region, positioned adjacent to some of the plurality of the first detection electrodes, and provided along a side of the detection region;
- a coordinate calculation circuit configured to calculate a detection position of a detection target body;
- a shield electrode provided in the peripheral region and surrounding outside of the plurality of first detection electrodes and the plurality of second detection electrodes;
- and
- a storage circuit configured to store a first correction value in accordance with sensitivity of the plurality of second detection electrodes, wherein
- an inner edge of the shield electrode is outside outer edges of the plurality of second detection electrodes in a plan view, and
- the coordinate calculation circuit calculates the detection position of the detection target body based on a value obtained by multiplying the detection value of the plurality of second detection electrodes by the first correction value.
5 more elements
Dependencies are inferred from the claim text.