Title:
CAPACITIVE TOUCH SENSOR
Document Type and Number:
WIPO Patent Application WO/2021/109110
Kind Code:
A1
Abstract:
An apparatus comprises a circuit board (440) having a first conductive pad (420) on a circuit board surface and a conductive overlay (410B), which has a first surface and a second surface opposite the first surface and is configured to deflect in response to a touch on the first surface. A protrusion (490) protrudes from the second surface and is configured to be a second conductive pad. The circuit board, the conductive overlay, and the protrusion are arranged such that the second surface faces the circuit board surface and is separated from the first conductive pad by a first distance (d1). The protrusion and the first conductive pad are separated by a second distance (d2) and have an overlapping area. The apparatus may also comprise a spacer (450A, 450B) configured to separate the first conductive pad from the second surface by the first distance and from the protrusion by the second distance.
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Inventors:
ZHU LING (CN)
HAN XUTONG (CN)
HAN XUTONG (CN)
Application Number:
PCT/CN2019/123581
Publication Date:
June 10, 2021
Filing Date:
December 06, 2019
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
TEXAS INSTRUMENTS JAPAN LTD (JP)
International Classes:
H01G5/16
Foreign References:
| CN104798154A | 2015-07-22 | |||
| CN106775100A | 2017-05-31 | |||
| CN206894615U | 2018-01-16 | |||
| US8149564B2 | 2012-04-03 |
Attorney, Agent or Firm:
JEEKAI & PARTNERS (CN)
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