US 12,704,925 B2Granted

Touch input device including a plurality of receiving electrodes disposed to interleave a plurality of driving electrodes

AssigneeHiDeep Inc.

InventorsBonkee Kim, Seyeob Kim, Jongsik Kim, Sein Lee

Life of this patent

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Abstract

A touch input device including a sensor detects whether a touch input to a touch surface is input by an object or/and a touch position even in a situation where the touch input device is in a floating state. The touch input device includes a touch surface, including: a sensor which is disposed under the touch surface and includes a plurality of driving electrodes, a plurality of receiving electrodes, and a plurality of dummy receiving electrodes; and a touch detection unit configured to detect a touch position of an object input to the touch surface based on a detection signal output from the plurality of receiving electrodes of the sensor, in which the touch detection unit detects the touch position of the object input to the touch surface.

Claims20

Dependent claims

An electronic device, comprising:

a display panel;
a sensor including:
a plurality of driving electrodes;
and
a plurality of receiving electrodes disposed to interleave the plurality of driving electrodes, and electrically insulated from the plurality of driving electrodes, and
a circuitry connected to the plurality of driving electrodes and the plurality of receiving electrodes,
wherein at least one of the plurality of driving electrodes includes:
a first driving electrode;
and
a second driving electrode disposed adjacent to the first driving electrode, and electrically insulated from the first driving electrode,
wherein at least one of the plurality of receiving electrodes is configured to:
output a first detection signal including first capacitance information associated with the first driving electrode when a first driving signal is applied to the first driving electrode by the circuitry, and
output a second detection signal including second capacitance information associated with the second driving electrode when a second driving signal is applied to the second driving electrode by the circuitry,
wherein the circuitry is configured to output a third detection signal corresponding to a subtraction based on the first detection signal and the second detection signal, and
wherein the circuitry is configured to:
drive the at least one of the plurality of driving electrodes in synchronization with at least one horizontal synchronization signal applied to the display panel, and
drive the at least one of the plurality of driving electrodes for a predetermined period of time after the horizontal synchronization signal starts to be applied to the display panel, and
wherein the at least one of the plurality of receiving electrodes comprises a first receiving electrode and a second receiving electrode electrically insulated from the first receiving electrode,
wherein the first receiving electrode is positioned closer to the first driving electrode than the second driving electrode, and
wherein the second receiving electrode is positioned closer to the second driving electrode than the first driving electrode.

17 more elements

An electronic device, comprising:

a display panel;
a sensor including:
a plurality of driving electrodes;
and
a plurality of receiving electrodes disposed to interleave the plurality of driving electrodes, and electrically insulated from the plurality of driving electrodes, and
a circuitry connected to the plurality of driving electrodes and the plurality of receiving electrodes,
wherein at least one of the plurality of driving electrodes includes:
a first driving electrode;
and
a second driving electrode disposed adjacent to the first driving electrode, and electrically insulated from the first driving electrode,
wherein at least one of the plurality of receiving electrodes is configured to:
output a first detection signal including first capacitance information associated with the first driving electrode when a first driving signal is applied to the first driving electrode by the circuitry, and
output a second detection signal including second capacitance information associated with the second driving electrode when a second driving signal is applied to the second driving electrode by the circuitry,
wherein the circuitry is configured to output a third detection signal corresponding to a subtraction based on the first detection signal and the second detection signal,
wherein the circuitry is configured to drive the at least one of the plurality of driving electrodes in a second time period different from a first time period in which a plurality of horizontal synchronization signals are applied to the display panel,
wherein the at least one of the plurality of receiving electrodes comprises a first receiving electrode and a second receiving electrode electrically insulated from the first receiving electrode,
wherein the first receiving electrode is positioned closer to the first driving electrode than the second driving electrode, and
wherein the second receiving electrode is positioned closer to the second driving electrode than the first driving electrode.

15 more elements

An electronic device, comprising:

a display panel;
a sensor including:
a plurality of driving electrodes;
and
a plurality of receiving electrodes disposed to interleave the plurality of driving electrodes, and electrically insulated from the plurality of driving electrodes, and
a circuitry connected to the plurality of driving electrodes and the plurality of receiving electrodes,
wherein at least one of the plurality of driving electrodes includes:
a first driving electrode;
and
a second driving electrode disposed adjacent to the first driving electrode, and electrically insulated from the first driving electrode,
wherein at least one of the plurality of receiving electrodes is configured to:
include first capacitance information associated with the first driving electrode when a first driving signal is applied to the first driving electrode by the circuitry, and
include second capacitance information associated with the second driving electrode when a second driving signal is applied to the second driving electrode by the circuitry, and
wherein the circuitry is configured to output a detection signal based on the first capacitance information and the second capacitance information, and
wherein the circuitry is configured to:
drive the at least one of the plurality of driving electrodes in synchronization with at least one horizontal synchronization signal applied to the display panel,
drive the at least one of the plurality of driving electrodes for a predetermined period of time after the horizontal synchronization signal starts to be applied to the display panel,
wherein the at least one of the plurality of receiving electrodes comprises a first receiving electrode and a second receiving electrode electrically insulated from the first receiving electrode,
wherein the first receiving electrode is positioned closer to the first driving electrode than the second driving electrode, and
wherein the second receiving electrode is positioned closer to the second driving electrode than the first driving electrode.

17 more elements

An electronic device, comprising:

a display panel;
a sensor including:
a plurality of driving electrodes;
and
a plurality of receiving electrodes disposed to interleave the plurality of driving electrodes, and electrically insulated from the plurality of driving electrodes, and
a circuitry connected to the plurality of driving electrodes and the plurality of receiving electrodes,
wherein at least one of the plurality of driving electrodes includes:
a first driving electrode;
and
a second driving electrode disposed adjacent to the first driving electrode, and electrically insulated from the first driving electrode,
wherein at least one of the plurality of receiving electrodes is configured to:
include first capacitance information associated with the first driving electrode when a first driving signal is applied to the first driving electrode by the circuitry, and
include second capacitance information associated with the second driving electrode when a second driving signal is applied to the second driving electrode by the circuitry, and
wherein the circuitry is configured to output a detection signal based on the first capacitance information and the second capacitance information,
wherein the circuitry is configured to drive the at least one of the plurality of driving electrodes in a second time period different from a first time period in which a plurality of horizontal synchronization signals are applied to the display panel,
wherein the at least one of the plurality of receiving electrodes comprises a first receiving electrode and a second receiving electrode electrically insulated from the first receiving electrode,
wherein the first receiving electrode is positioned closer to the first driving electrode than the second driving electrode, and
wherein the second receiving electrode is positioned closer to the second driving electrode than the first driving electrode.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/958,700Filed 25 Nov 2024 · continuation in part
Priority: KR 10-2019-00382922 Apr 2019
Published: US 2025/0093998 A120 Mar 2025
Granted: 11 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G06F 3/0418
Control or interface arrangements specially adapted for digitisers: for error correction or compensation, e.g. based on parallax, calibration or…
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
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 3/0443
By capacitive means: using a single layer of sensing electrodes

Family

Application17/600,465Parent of this continuation · filed 11 Feb 2020
PCT/KR2020/001925Parent of this continuation · filed 11 Feb 2020
Application18/210,499Parent of this continuation-in-part · filed 15 Jun 2023
US 12,079,427 B2Parent of this continuation · filed 3 Sep 2024
US 2025/0093998 A1Pre-grant publication · published 20 Mar 2025
US 12,468,412 B2Parent of this continuation-in-part
Application18/210,499Parent of this continuation
US 2022/0253173 A1Published application
US 2023/0325031 A1Published application
US 12,704,925 B2This patent

From the US filing history. Foreign family members aren’t listed.