# US 12,118,167 B2 · Touch panel

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- Number: US 12,118,167 B2
- Document ID: US12118167B2
- Status: Granted
- Kind: B2
- Application number: 18/349,979
- Filed: 2023-07-11
- Published: 2024-01-18
- Granted: 2024-10-15
- Earliest claimed: 2022-07-12
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Takumi Sano
- Web page: https://patentgrep.com/patent/US12118167B2

## CPC

- G06F 3/044: by capacitive means
- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F 3/0443: {using a single layer of sensing electrodes}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads}
- G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)}
- G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
- G06F 2203/04108: Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

According to an aspect, a touch panel includes, in sequence: a stretchable array substrate, a touch detection electrode; and a resin plate. The resin plate has: a facing surface facing the touch detection electrode; and a detection surface facing opposite to the facing surface. The facing surface or the detection surface has a recessed surface. The recessed surface is provided with a high permittivity layer having permittivity higher than permittivity of the resin plate. The touch detection electrode and the high permittivity layer overlap when viewed in a stacking direction in which the stretchable array substrate, the touch detection electrode, and the resin plate are stacked.

## Claims

### Claim 1

A touch panel comprising, in sequence:
a stretchable array substrate,
a touch detection electrode; and
a resin plate, wherein
the stretchable array substrate includes: a switching element having a source coupled to the touch detection electrode; a gate line coupled to a gate of the switching element; and a signal line coupled to a drain of the switching element,
the resin plate has:
a facing surface facing the touch detection electrode; and
a detection surface facing opposite to the facing surface,
the facing surface or the detection surface has a recessed surface,
the recessed surface is provided with a high permittivity layer having permittivity higher than permittivity of the resin plate, and
when viewed in a stacking direction in which the stretchable array substrate, the touch detection electrode, and the resin plate are stacked, the high permittivity layer overlaps the touch detection electrode that is coupled to the source of the switching element.

### Claim 2 (depends on 1)

The touch panel according to claim 1, wherein
the stretchable array substrate comprises a resin base member,
the resin base member comprises:
a plurality of bodies disposed apart from each other; and
a plurality of hinges that couple the bodies, and
the touch detection electrode and the high permittivity layer overlap a corresponding one of the bodies when viewed in the stacking direction.

### Claim 3 (depends on 2)

The touch panel according to claim 2, wherein the recessed surface is provided to the facing surface.

### Claim 4 (depends on 1)

The touch panel according to claim 1, wherein the recessed surface is provided to the facing surface.