# US 12,181,915 B2 · Display module and manufacturing method thereof

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- Number: US 12,181,915 B2
- Document ID: US12181915B2
- Status: Granted
- Kind: B2
- Application number: 17/275,201
- Filed: 2020-12-31
- Published: 2023-10-26
- Granted: 2024-12-31
- Earliest claimed: 2020-12-30
- Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Inventors: Peng Wang
- Web page: https://patentgrep.com/patent/US12181915B2

## CPC

- G06F 1/1601: {Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays (constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64)}
- B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)}
- B32B 5/18: characterised by features of a layer {of} foamed material
- B32B 9/007: {comprising carbon, e.g. graphite, composite carbon}
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- B32B 27/281: {comprising polyimides}
- G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing}
- B32B 2255/00: Coating on the layer surface
- B32B 2266/0242: Acrylic resin
- B32B 2266/12: Gel
- B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays
- B32B 2571/00: Protective equipment
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

A display module and a manufacturing method thereof are provided, which include a display panel having a display region, and a protective layer attached to a back surface of the display region. Wherein, at least two alignment marks are disposed on peripheral sides of the display region, at least two alignment grooves are defined on peripheral sides of the protective layer, and the alignment grooves respectively one-to-one correspond to the alignment marks to align and attach the protective layer to the back surface of the display region.

## Claims

### Claim 1

A display module, comprising:
a display panel having a display region, wherein the display region has peripheral sides and a back surface; and
a protective layer attached to the back surface of the display region, wherein the protective layer has peripheral sides;
wherein the peripheral sides of the protective layer are disposed within the peripheral sides of the display region;
wherein at least two alignment marks are disposed on the peripheral sides of the display region in a direction towards the peripheral sides of the protective layer, at least two alignment grooves are defined on the peripheral sides of the protective layer, and the alignment grooves respectively one-to-one correspond to the alignment marks to align and attach the protective layer to the back surface of the display region;
the alignment marks have a first lateral surface and a second lateral surface disposed oppositely, and the alignment grooves have an opening and a bottom section;
the first lateral surface is located on a side away from the opening of the alignment grooves in a direction towards the peripheral sides of the display region and is spaced a first distance from the opening, and the second lateral surface is located within the opening of one of the alignment grooves in a direction towards the bottom section and is spaced a second distance from the bottom section; and
the first distance or the second distance are dimensions of confirmed accuracy of the protective layer attached to the back surface of the display region.

### Claim 2 (depends on 1)

The display module as claimed in claim 1, wherein two of the alignment marks are disposed on any peripheral side of the display region, two of the alignment grooves are defined on the peripheral sides of the protective layer, and the alignment grooves respectively one-to-one correspond to the alignment marks.

### Claim 3 (depends on 1)

The display module as claimed in claim 1, wherein two adjacent peripheral sides of the display region are respectively provided with one of the alignment marks, two adjacent peripheral sides of the protective layer are respectively provided with one of the alignment grooves, and the alignment groove respectively one-to-one correspond to the alignment mark.

### Claim 4 (depends on 1)

The display module as claimed in claim 1, wherein two adjacent peripheral sides of the display region are respectively provided with two of the alignment marks, two adjacent peripheral sides of the protective layer are respectively provided with two of the alignment grooves, and the alignment grooves respectively one-to-one correspond to the alignment marks.

### Claim 5 (depends on 1)

The display module as claimed in claim 1, wherein the alignment grooves penetrate the protective layer.

### Claim 6 (depends on 1)

The display module as claimed in claim 1, wherein the protective layer comprises at least one of lattice gel, acrylic foam, polyimide, graphite, or copper foil.

### Claim 7

A manufacturing method of a display module, comprising:
providing a display panel, wherein the display panel has a display region, the display region has peripheral sides and a back surface, and at least two alignment marks are disposed on the peripheral sides of the display region in a direction towards the peripheral sides of the protective layer;
providing a protective layer, wherein the protective layer has peripheral sides, and at least two alignment grooves are defined on the peripheral sides of the protective layer, the peripheral sides of the protective layer being disposed within the peripheral sides of the display region;
attaching the protective layer to the back surface of the display region, and corresponding the alignment grooves to the alignment marks one-to-one, respectively;
obtaining distances between the first lateral surface of the alignment marks and the opening of the alignment grooves, or obtaining distances between the second lateral surface of the alignment marks and the correspondingly disposed bottom section of the alignment grooves to act as the dimensions of confirmed accuracy of the protective layer attached to the back surface of the display region;
adjusting an attaching position of the protective layer according to the dimensions of confirmed accuracy to align and attach the protective layer to the back surface of the display region;
wherein the alignment marks have a first lateral surface and a second lateral surface disposed oppositely, and the alignment grooves have an opening and a bottom section; and
the first lateral surface is located on a side away from the opening of the alignment grooves in a direction towards the peripheral sides of the display region and is spaced a first distance from the opening, and the second lateral surface is located within the opening of one of the alignment grooves in a direction towards the bottom section and is spaced a second distance from the bottom section.