# US 2019/0171324 A1 · Display module and method for manufacturing the same, display device and wearable device

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- Number: US 2019/0171324 A1
- Document ID: US20190171324A1
- Status: Published application
- Kind: A1
- Application number: 16/038,611
- Filed: 2018-07-18
- Published: 2019-06-06
- Earliest claimed: 2017-12-06
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.
- Inventors: Minghsi WANG
- Web page: https://patentgrep.com/patent/US20190171324A1

## CPC

- G06F 3/0414: {using force sensing means to determine a position}
- G02F 1/133528: {Polarisers}
- G06F 1/163: {Wearable computers, e.g. on a belt}
- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- H10H 20/83: Electrodes
- H10H 20/854: characterised by their material, e.g. epoxy or silicone resins
- G02F 1/13338: {Input devices, e.g. touch panels}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/044: by capacitive means
- G06F 3/045: using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- G06F 2203/04105: Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
- 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
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

The present disclosure provides a display module and a method for manufacturing the same, a display device and a wearable device. The display module includes a display screen, at least one pressure sensing electrode, and a touch screen. The display screen includes a first and a second electrode on opposite sides of a display layer, and an encapsulation layer on the second electrode. The at least one pressure sensing electrode is disposed on the encapsulation layer and opposite to the second electrode. The touch screen is disposed on the at least one pressure sensing electrode and is insulated from the at least one pressure sensing electrode.

## Claims

### Claim 1

A display module, comprising:
a display screen, comprising:
a first and a second electrode disposed on opposite sides of a display layer, and
an encapsulation layer disposed on the second electrode;
at least one pressure sensing electrode disposed on the encapsulation layer and opposite to the second electrode; and
a touch screen disposed on the at least one pressure sensing electrode and insulated from the at least one pressure sensing electrode.

### Claim 2 (depends on 1)

The display module according to claim 1, wherein:
the touch screen comprises a touch sensor and a transparent cap layer on the touch sensor; and
the display module further comprises an insulating layer disposed between the at least one pressure sensing electrode and the touch sensor.

### Claim 3 (depends on 1)

The display module according to claim 1, wherein the touch screen comprises a transparent cap layer and a touch sensor disposed on the transparent cap layer, a material of the transparent cap layer comprises an insulating material.

### Claim 4 (depends on 2)

The display module according to claim 2, wherein the at least one pressure sensing electrode comprises a plurality of pressure sensing electrodes spaced apart from each other, wherein a gap between adjacent pressure sensing electrodes of the plurality of pressure sensing electrodes is filled with an insulating material.

### Claim 5 (depends on 2)

The display module according to claim 2, wherein the touch screen further comprises:
a polarizer disposed between the transparent cap layer and the touch sensor.

### Claim 6 (depends on 1)

The display module according to claim 1, wherein the first electrode is an anode, the second electrode is a cathode, and the display layer comprises an electroluminescent material.

### Claim 7 (depends on 1)

The display module according to claim 1, wherein the first electrode is a pixel electrode, the second electrode is a common electrode, and the display layer comprises a liquid crystal material.

### Claim 8 (depends on 1)

The display module according to claim 1, wherein a material of the at least one pressure sensing electrode is selected from a group of indium tin oxide, nano silver wire, metal mesh, carbon nanotube, or graphene.

### Claim 9 (depends on 1)

The display module according to claim 1, wherein the at least one pressure sensing electrode has a thickness ranging from 300 nm to 1.2 μm.

### Claim 10 (depends on 1)

A display device, comprising: the display module according to claim 1.

### Claim 11 (depends on 10)

A wearable device, comprising: the display device according to claim 10.

### Claim 12

A method for manufacturing a display module, comprising:
providing a display screen, the display screen comprising a first and a second electrode disposed on opposite sides of a display layer, and an encapsulation layer disposed on the second electrode;
forming at least one pressure sensing electrode disposed opposite to the second electrode on the encapsulation layer; and
forming, on the at least one pressure sensing electrode, a touch screen insulated from the at least one pressure sensing electrode.

### Claim 13 (depends on 12)

The method according to claim 12, further comprising:
forming an insulating layer on the at least one pressure sensing electrode;
forming the touch screen comprises:
forming a touch sensor on the insulating layer; and
forming a transparent cap layer on the touch sensor.

### Claim 14 (depends on 12)

The method according to claim 12, wherein forming the touch screen comprises:
forming a transparent cap layer on the at least one pressure sensing electrode, wherein a material of the transparent cap layer comprises an insulating material; and
forming a touch sensor on the transparent cap layer.

### Claim 15 (depends on 13)

The method according to claim 13, wherein the at least one pressure sensing electrode comprises a plurality of pressure sensing electrodes spaced apart from each other, wherein a gap between adjacent pressure sensing electrodes of the plurality of pressure sensing electrodes is filled with an insulating material.

### Claim 16 (depends on 13)

The method according to claim 13, further comprising:
forming a polarizer on the touch sensor, wherein the transparent cap layer is formed on the polarizer.

### Claim 17 (depends on 12)

The method according to claim 12, wherein the first electrode is an anode, the second electrode is a cathode, and the display layer comprises an electroluminescent material.

### Claim 18 (depends on 12)

The method according to claim 12, wherein the first electrode is a pixel electrode, the second electrode is a common electrode, and the display layer comprises a liquid crystal material.

### Claim 19 (depends on 12)

The method according to claim 12, wherein a material of the at least one pressure sensing electrode is selected from a group of indium tin oxide, nano silver wire, metal mesh, carbon nanotube, or graphene.

### Claim 20 (depends on 12)

The method according to claim 12, wherein the at least one pressure sensing electrode has a thickness ranging from 300 nm to 1.2 μm.