# US 10,120,468 B2 · Touch device comprising pressure-sensing layer and flat touch sensing layer

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- Number: US 10,120,468 B2
- Document ID: US10120468B2
- Status: Granted
- Kind: B2
- Application number: 15/175,056
- Filed: 2016-06-07
- Published: 2016-12-15
- Granted: 2018-11-06
- Earliest claimed: 2015-06-10
- Assignees: TPK Touch Solutions (Xiamen) Inc.
- Applicants: TPK Touch Solutions (Xiamen) Inc.
- Inventors: Wenlong Chen; Cheng-Chung Chiang; Yau-Chen Jiang; Yanjun Xie; Bin Lai; Ching-Shan Lin
- Web page: https://patentgrep.com/patent/US10120468B2

## CPC

- G06F 3/0443: {using a single layer of sensing electrodes}
- G02F 1/133345: {Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence)}
- G02F 1/13338: {Input devices, e.g. touch panels}
- G02F 1/133514: {Colour filters}
- G02F 1/133528: {Polarisers}
- G02F 1/134309: {characterised by their geometrical arrangement}
- G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making}
- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F 3/0412: {Digitisers structurally integrated in a display}
- H05K 1/0296: {Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18)}
- G02F 1/133357: {Planarisation layers}
- G02F 2202/28: Adhesive materials or arrangements
- 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 2203/04104: Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
- G06F 2203/04105: Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
- G06F 2203/04106: Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
- G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

The disclosure provides a touch device, including a protection cover, a pressure-sensing layer and a flat touch-sensing electrode layer. The protection cover is used as an outer protection shield, and an upper surface of the protection cover is provided to users for pressing action. The pressure-sensing layer is disposed under the protection cover to detect touch strength. The flat touch-sensing electrode layer is disposed between the pressure-sensing layer and the protection cover to detect the position of the user's touch.

## Claims

### Claim 1

A touch device, comprising:
a protection cover used as an outer protection shield, wherein an upper surface of the protection cover is provided to users for a pressing action;
a pressure-sensing layer, disposed under the protection cover, configured to detect touch strength;
a flat touch-sensing electrode layer, disposed between the pressure-sensing layer and the protection cover, configured to detect a position of the pressing action, wherein the flat touch-sensing electrode layer is disposed directly on a bottom surface of the protection cover; and
a display panel, wherein:
the display panel is composed at least by a polarizer, an upper substrate, a color filter set, a liquid-crystal layer, a driver layer and a bottom substrate from top to bottom, and
the pressure-sensing layer is embedded in the display panel between the polarizer and the upper substrate.

### Claim 2 (depends on 1)

The touch device as claimed in claim 1, wherein:
the pressure-sensing layer at least comprises a radial pressure-sensing electrode,
the radial pressure-sensing electrode has a plurality of extension portions, and
each of the plurality of extension portions is presented as a radial pattern outwards from a center of the radial pressure-sensing electrode for increasing a pressure-detection sensitivity.

### Claim 3 (depends on 2)

The touch device as claimed in claim 2, wherein a size of the radial pressure-sensing electrode is about 25 mm2 to 225 mm2.

### Claim 4 (depends on 2)

The touch device as claimed in claim 2, wherein the radial pressure-sensing electrode is a transparent wire bent and rounded in a radial pattern.

### Claim 5 (depends on 1)

The touch device as claimed in claim 1, wherein:
the pressure-sensing layer comprises a plurality of radial pressure-sensing electrodes,
each of the plurality of radial pressure-sensing electrodes is formed of a plurality of radial patterns bent and rounded by at least one transparent wire, and
at least two of the plurality of radial patterns are formed of one bent and rounded transparent wire.

### Claim 6 (depends on 4)

The touch device as claimed in claim 4, wherein a range of a linewidth of the transparent wire is 3 um-500 um.

### Claim 7 (depends on 4)

The touch device as claimed in claim 4, wherein a gauge factor of the transparent wire is greater than 0.5.

### Claim 8

A touch device, comprising:
a pressure-sensing layer configured to detect touch strength, wherein:
the pressure-sensing layer comprises at least one radial pressure-sensing electrode,
the radial pressure-sensing electrode has a plurality of extension portions, and
each of the plurality of extension portions is presented as a radial pattern outwards from a center of the radial pressure-sensing electrode; and
a display panel, wherein:
the display panel is composed at least by a polarizer, an upper substrate, a color filter set, a liquid-crystal layer, a driver layer and a bottom substrate from top to bottom, and
the pressure-sensing layer is embedded in the display panel between the polarizer and the upper substrate.

### Claim 9 (depends on 8)

The touch device as claimed in claim 8, wherein the radial pressure-sensing electrode is a transparent wire bent and rounded in a radial pattern.

### Claim 10 (depends on 9)

The touch device as claimed in claim 9, wherein a gauge factor of the transparent wire is greater than 0.5.

### Claim 11 (depends on 8)

The touch device as claimed in claim 8, wherein:
the pressure-sensing layer comprises a plurality of radial pressure-sensing electrodes, and
each of the plurality of radial pressure-sensing electrodes is formed of a plurality of radial patterns bent and rounded by at least one transparent wire, and
at least two of the plurality of radial patterns are formed of one bent and rounded transparent wire.

### Claim 12 (depends on 8)

The touch device as claimed in claim 8, comprising:
a protection cover; and
a flat touch-sensing electrode layer disposed between the pressure-sensing layer and the protection cover, wherein the flat touch-sensing electrode layer is disposed directly on a bottom surface of the protection cover.

### Claim 13 (depends on 12)

The touch device as claimed in claim 12, wherein the flat touch-sensing electrode layer is configured to detect a position of a pressing action of a user.

### Claim 14

A touch device, comprising:
a protection cover, used as an outer protection shield, an upper surface of the protection cover provided to users for a pressing action;
a pressure-sensing layer, disposed under the protection cover, configured to detect touch strength;
a flat touch-sensing electrode layer, disposed between the pressure-sensing layer and the protection cover, configured to detect position of the pressing action, wherein the flat touch-sensing electrode layer is disposed directly on a bottom surface of the protection cover; and
a display panel, wherein:
the display panel is composed at least by a polarizer, an upper substrate, a color filter set, a liquid-crystal layer, a driver layer and a bottom substrate from top to bottom, and
the pressure-sensing layer is embedded in the display panel between the upper substrate and color filter set.

### Claim 15 (depends on 14)

The touch device as claimed in claim 14, wherein:
the pressure-sensing layer at least comprises a radial pressure-sensing electrode,
the radial pressure-sensing electrode has a plurality of extension portions, and
each of the plurality of extension portions is presented as a radial pattern outwards from a center of the radial pressure-sensing electrode for increasing a pressure-detection sensitivity.

### Claim 16 (depends on 15)

The touch device as claimed in claim 15, wherein a size of the radial pressure-sensing electrode is about 25 mm2 to 225 mm2.

### Claim 17 (depends on 15)

The touch device as claimed in claim 15, wherein the radial pressure-sensing electrode is a transparent wire bent and rounded in a radial pattern.

### Claim 18 (depends on 17)

The touch device as claimed in claim 17, wherein a range of a linewidth of the transparent wire is 3 um-500 um.

### Claim 19 (depends on 17)

The touch device as claimed in claim 17, wherein a gauge factor of the transparent wire is greater than 0.5.

### Claim 20 (depends on 14)

The touch device as claimed in claim 14, wherein:
the pressure-sensing layer comprises a plurality of radial pressure-sensing electrodes,
each of the plurality of radial pressure-sensing electrodes is formed of a plurality of radial patterns bent and rounded by at least one transparent wire, and
at least two of the plurality of radial patterns are formed of one bent and rounded transparent wire.