US 2019/0294275 A1 · DEVICE AND METHOD FOR COMPENSATING FOR TEMPERATURE CHANGE IN STRAIN-GAUGE PRESSURE SENSOR AND METHOD FOR IMPLEMENTING STRAIN-GAUGE PRESSURE FROM TOUCHSCREEN ELEMENT

Abstract

An electronic device is provided. The electronic device includes a sensor layer including a first channel including one or more first electrodes and a second channel including one or more second electrodes and a control circuit configured to detect touch information corresponding to an input of an external object to the sensor layer based on a change in capacitance between at least one of the one or more first electrodes and at least one of the one or more second electrodes and detect pressure information corresponding to the input based on a resistance changed by the input to at least one of the first channel or the second channel.

Claims20

Dependent claims

An electronic device comprising:

a sensor layer including a first channel including one or more first electrodes and a second channel including one or more second electrodes;
and
a control circuit configured to:
detect touch information corresponding to an input of an external object to the sensor layer based on a change in capacitance between at least one of the one or more first electrodes and at least one of the one or more second electrodes, and
detect pressure information corresponding to the input based on a resistance changed by the input to at least one of the first channel or the second channel.

2 more elements

A method for operating an electronic device, the electronic device including a sensor layer including a first channel including one or more first electrodes and a second channel including one or more second electrodes, the method comprising:

detecting touch information corresponding to an input of an external object to the sensor layer based on a change in capacitance between at least one of the one or more first electrodes and at least one of the one or more second electrodes;
and
detecting pressure information corresponding to the input based on a resistance changed by the input to at least one of the first channel or the second channel.

An electronic device comprising:

a sensor layer including a plurality of electrodes;
and
a control circuit configured to:
detect touch information based on a capacitance between adjacent electrodes corresponding to an input of an external object to the sensor layer among the plurality of electrodes, and
detect pressure information in a position of a target electrode based on a difference in resistance between a reference electrode among the plurality of electrodes and the target electrode among the plurality of electrodes, the target electrode corresponding to the input, wherein a resistance change characteristic corresponding to a change in temperature of the target electrode is substantially the same as a resistance change characteristic corresponding to a change in temperature of the reference electrode.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/361,911Filed 22 Mar 2019

Priority

KR 10-2018-003382323 Mar 2018

Published

26 Sep 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 3/04166
Control or interface arrangements specially adapted for digitisers: details of scanning methods, e.g. sampling time, grouping of sub areas or time…
G06F 3/044
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: by capacitive means
G06F 3/0418
Control or interface arrangements specially adapted for digitisers: for error correction or compensation, e.g. based on parallax, calibration or…
G06F 3/0445
By capacitive means: using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Device and method for compensating for temperature change in strain-gauge pressure sensor and method for implementing strain-gauge pressure from touchscreen element

Life of this patent

Device and method for compensating for temperature change in strain-gauge pressure sensor and method for implementing strain-gauge pressure from touchscreen element

Life of this patent

Abstract

Claims20