Patent · US Active

Capacitive pointing stick assembly with presence detection

US11614813B1 · kind B1 · utility

0Cited by

1References

17Claims

0Family size

Assignee

Synaptics Incorporated · US

Inventors

Wei-Lung Lee · Bietigheim-Bissingen, DE
Chih-Chien Chou · Taoyuan, TW
Lin-Hsiang Hsieh · Taoyuan, TW

Key dates

Filing date	Sep 30, 2021
Grant date	Mar 28, 2023
Priority date	—
Expiry date	Sep 30, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH05K2201/10151
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A pointing stick assembly includes: a head having a top surface configured to interface with a finger; a shaft connected to the head, wherein the shaft configured to be moved downward based on a finger pressing down on the head and to be tilted based on a finger tilting the head; a first sensor layer comprising a receiver electrode and a transmitter electrode; a second sensor layer comprising a transmitter electrode; and a third sensor layer comprising a plurality of receiver electrodes. The first sensor layer is configured for detection of presence of a finger based on a change in capacitance between the receiver electrode and the transmitter electrode of the first sensor layer caused by the presence of the finger on the top surface of the head.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.