KEYBOARD APPARATUS AND PROXIMITY SENSOR
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United States of America Patent
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Issued Date -
Aug 24, 2023
app pub date -
Apr 25, 2023
filing date -
Nov 13, 2020
priority date (Note) -
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Abstract
A keyboard apparatus according to an embodiment includes a keyboard and a mutual capacitance proximity sensor. The keyboard includes a first key and a second key arranged in an array direction with respect to the first key. The proximity sensor includes a first electrode having a portion extending from at least a first area below the first key to a second area below the second key, a second electrode arranged in the first area, and a third electrode arranged in the second area. The proximity sensor is a mutual capacitance type sensor and is configured to use a change in capacitance between the first electrode and the second electrode and a change in capacitance between the first electrode and the third electrode.
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