# US 2024/0201529 A1 · Display panel

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- Number: US 2024/0201529 A1
- Document ID: US20240201529A1
- Status: Published application
- Kind: A1
- Application number: 18/192,628
- Filed: 2023-03-29
- Published: 2024-06-20
- Earliest claimed: 2022-12-16
- Assignees: Industrial Technology Research Institute
- Applicants: Industrial Technology Research Institute
- Inventors: Pao-Ju Hsieh; Chyi-Ming Leu; Tzong-Ming Lee; Yu-Tsung Chiu
- Web page: https://patentgrep.com/patent/US20240201529A1

## CPC

- G02F 1/133305: {Flexible substrates, e.g. plastics, organic film}
- G02F 1/133514: {Colour filters}
- G02F 1/133528: {Polarisers}
- 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 display panel including a first substrate, a second substrate, and a display medium layer is provided. The second substrate is disposed opposite to the first substrate. The display medium layer is disposed between the first substrate and the second substrate. At least one of the first substrate and the second substrate includes a plastic base and a support layer, and the plastic base is disposed between the support layer and the display medium layer. A thickness of the support layer ranges from 0.3 mm to 3 mm.

## Claims

### Claim 1

A display panel, comprising:
a first substrate;
a second substrate, disposed opposite to the first substrate; and
a display medium layer, disposed between the first substrate and the second substrate,
wherein at least one of the first substrate and the second substrate comprises a plastic base and a support layer, and the plastic base is disposed between the support layer and the display medium layer,
wherein a thickness of the support layer ranges from 0.3 mm to 3 mm,
wherein the thickness of the support layer and a diagonal length of the display panel conform to a following formula of correlation:
dR1=α ln(D)-β,
wherein dR1 is the thickness of the support layer in a unit of mm, D is the diagonal length of the display panel in a unit of inches, α≥0.5, and β≥1.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein the first substrate comprises a first base, a first support layer, and a first polarization layer, the first support layer is disposed between the first base and the first polarization layer in a normal direction of the display panel, the second substrate comprises a second base and a second polarization layer, and the second base is disposed between the second polarization layer and the display medium layer in the normal direction of the display panel, wherein the first base is the plastic base, and a material of the display medium layer comprises liquid crystal.

### Claim 3 (depends on 2)

The display panel according to claim 2, wherein the second substrate further comprises a device layer and a color filter layer disposed on a surface of the second base away from the second polarization layer, wherein
the device layer is disposed between the color filter layer and the second base in the normal direction of the display panel; or
the color filter layer is disposed between the device layer and the second base in the normal direction of the display panel.

### Claim 4 (depends on 1)

The display panel according to claim 1, wherein the first substrate comprises a first base and a first polarization layer, the first base is disposed between the first polarization layer and the display medium layer in a normal direction of the display panel, the second substrate comprises a second base, a second support layer, and a second polarization layer, and the second support layer is disposed between the second base and the second polarization layer in the normal direction of the display panel, wherein the second base is the plastic base, and the material of the display medium layer comprises liquid crystal.

### Claim 5 (depends on 4)

The display panel according to claim 4, wherein the second substrate further comprises a device layer and a color filter layer disposed on a surface of the second base away from the second polarization layer, wherein
the device layer is disposed between the color filter layer and the second base in the normal direction of the display panel; or
the color filter layer is disposed between the device layer and the second base in the normal direction of the display panel.

### Claim 6 (depends on 1)

The display panel according to claim 1, wherein the first substrate comprises a first base, a first support layer, and a first polarization layer, the first support layer is disposed between the first base and the first polarization layer in a normal direction of the display panel, the second substrate comprises a second base, a second support layer, and a second polarization layer, and the second support layer is disposed between the second base and the second polarization layer in the normal direction of the display panel, wherein the first base and the second base are the plastic base.

### Claim 7 (depends on 6)

The display panel according to claim 6, wherein the second substrate further comprises a device layer and a color filter layer disposed on a surface of the second base away from the second polarization layer, wherein
the device layer is disposed between the color filter layer and the second base in the normal direction of the display panel; or
the color filter layer is disposed between the device layer and the second base in the normal direction of the display panel.

### Claim 8 (depends on 1)

The display panel according to claim 1, wherein the first substrate comprises the plastic base, and a thickness of the plastic base ranges from 20 μm to 30 μm.

### Claim 9 (depends on 1)

The display panel according to claim 1, wherein the material of the support layer comprises poly(methyl methacrylate), polycarbonate, cyclo olefin polymer, polyethylene terephthalate, polyethylene naphthalate, or a combination thereof.

### Claim 10 (depends on 1)

The display panel according to claim 1, wherein the first substrate or the second substrate comprises a glass substrate.

### Claim 11 (depends on 1)

The display panel according to claim 1, wherein the second substrate comprises the plastic base, and a thickness of the plastic base ranges from 10 μm to 20 μm.