# US 10,502,997 B2 · Touch liquid crystal display device with two adhesives, touch display device and lamination method

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- Number: US 10,502,997 B2
- Document ID: US10502997B2
- Status: Granted
- Kind: B2
- Application number: 15/078,721
- Filed: 2016-03-23
- Published: 2017-01-05
- Granted: 2019-12-10
- Earliest claimed: 2015-07-02
- Assignees: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd.
- Applicants: BOE Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd.
- Inventors: Jun Chen; Hongqiang Luo; Pengyu Zhang; Zhanqi Xu; Zhongzheng Yang; Kefeng Li; Ting Zeng
- Web page: https://patentgrep.com/patent/US10502997B2

## CPC

- G02F 1/13338: {Input devices, e.g. touch panels}
- G02F 1/133331: {Cover glasses}
- G02F 1/133354: {Arrangements for aligning or assembling substrates}
- G02F 2202/28: Adhesive materials or arrangements
- 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

## Abstract

A touch liquid crystal display (LCD) device, a touch display device and a lamination method are provided. The touch LCD device includes an LCD module, a package substrate, a first adhesive and a second adhesive; the LCD module and the package substrate are adhered to each other through the first adhesive which covers a display area of the LCD module; and the second adhesive is disposed between the LCD module and the package substrate and on a non-display area of the LCD module, and hardness of the second adhesive is greater than hardness of the first adhesive. The touch LCD device can effectively eliminate the problem of reduced display quality caused by the water wave phenomenon that the touch LCD device adopting a full lamination method tends to generate.

## Claims

### Claim 1

A touch liquid crystal display (LCD) device, comprising an LCD module, a package substrate, a filler, a first adhesive and a second adhesive, wherein
the LCD module and the package substrate are adhered to each other through the first adhesive which covers a display area of the LCD module;
the second adhesive is disposed between the filler and the package substrate and on a non-display area of the LCD module, and hardness of the second adhesive is greater than hardness of the first adhesive;
the LCD module comprises an opposite substrate close to the package substrate and an array substrate away from the package substrate;
the filler is disposed at a position, beyond the opposite substrate, of the array substrate in the non-display area, the second adhesive is disposed on the filler; and
in a direction perpendicular to a surface of the array substrate, the filler is disposed directly between the second adhesive and the array substrate, and a surface of the filler facing the package substrate is in direct contact with the second adhesive, and a surface of the filler away from a side where the package substrate is located is in direct contact with the array substrate.

### Claim 2 (depends on 1)

The touch LCD device according to claim 1, wherein the second adhesive covers at least two opposite edge regions in the non-display area.

### Claim 3 (depends on 2)

The touch LCD device according to claim 2, wherein the second adhesive covers two opposite edge regions in the non-display area.

### Claim 4 (depends on 2)

The touch LCD device according to claim 2, wherein
the filler is disposed in the at least two opposite edge regions in the non-display area.

### Claim 5 (depends on 1)

The touch LCD device according to claim 1, wherein the filler comprises a photosensitive adhesive or plastic.

### Claim 6 (depends on 5)

The touch LCD device according to claim 5, wherein the plastic comprises poly-terephthalic-acid series, polycarbonate or polythene.

### Claim 7 (depends on 1)

The touch LCD device according to claim 1, wherein the first adhesive is glue or an optical adhesive, and the second adhesive is a plastic tape.

### Claim 8 (depends on 7)

The touch LCD device according to claim 7, wherein a width of the plastic tape ranges from 0.2 mm to 0.4 mm.

### Claim 9 (depends on 7)

The touch LCD device according to claim 7, wherein a thickness of the plastic tape ranges from 0.1 mm to 0.5 mm.

### Claim 10 (depends on 7)

The touch LCD device according to claim 7, wherein the plastic tape is a double-sided plastic tape.

### Claim 11 (depends on 2)

The touch LCD device according to claim 2, wherein the first adhesive is glue or an optical adhesive; and the second adhesive is a plastic tape.

### Claim 12 (depends on 3)

The touch LCD device according to claim 3, wherein the first adhesive is glue or an optical adhesive; and the second adhesive is a plastic tape.

### Claim 13 (depends on 4)

The touch LCD device according to claim 4, wherein the first adhesive is glue or an optical adhesive; and the second adhesive is a plastic tape.

### Claim 14 (depends on 5)

The touch LCD device according to claim 5, wherein the first adhesive is glue or an optical adhesive; and the second adhesive is a plastic tape.

### Claim 15 (depends on 6)

The touch LCD device according to claim 6, wherein the first adhesive is glue or an optical adhesive; and the second adhesive is a plastic tape.

### Claim 16 (depends on 1)

The touch LCD device according to claim 1, wherein a thickness of the first adhesive is equal to a thickness of the second adhesive in a direction from the LCD module to the package substrate.

### Claim 17

A touch display device, comprising:
a display panel comprising a first substrate and a second substrate arranged to be opposite to each other;
a package substrate disposed on a side, away from the second substrate, of the first substrate;
a first adhesive connecting the package substrate and the display panel and covering a display area of the display panel;
a second adhesive disposed between the display panel and the package substrate and on a non-display area of the display panel, wherein hardness of the second adhesive is greater than hardness of the first adhesive; and
a filler is disposed at a position, beyond the first substrate, of the second substrate in the non-display area, the second adhesive is disposed on the filler in the non-display area,
wherein the second adhesive is disposed between the filler and the package substrate, in a direction perpendicular to a surface of the array substrate, the filler is disposed directly between the second adhesive and the second substrate, and a surface of the filler facing the package substrate is in direct contact with the second adhesive, and a surface of the filler away from a side where the package substrate is located is in direct contact with the array substrate.

### Claim 18

A lamination method, comprising:
forming a first adhesive on a display area of a display panel, wherein the first adhesive layer covers the display area, wherein the display panel comprises a first substrate and a second substrate arranged to be opposite to each other, and a package substrate is disposed on a side, away from the second substrate, of the first substrate;
forming a filler at a position, beyond the first substrate, of the second substrate in a non-display area; and
forming a second adhesive on the filler in the non-display area of the display panel,
wherein hardness of the second adhesive is greater than hardness of the first adhesive, the first adhesive connects the display panel and the package substrate, the second adhesive is disposed between the filler and the package substrate, in a direction perpendicular to a surface of the array substrate, the filler is disposed directly between the second adhesive and the second substrate, and a surface of the filler facing the package substrate is in direct contact with the second adhesive, and a surface of the filler away from a side where the package substrate is located is in direct contact with the array substrate.

### Claim 19 (depends on 1)

The touch LCD device according to claim 1, wherein, the first adhesive is in direct contact with the LCD module and the package substrate, and the second adhesive is in direct contact with the package substrate.