# US 2021/0240033 A1 · Liquid crystal display

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- Number: US 2021/0240033 A1
- Document ID: US20210240033A1
- Status: Published application
- Kind: A1
- Application number: 17/234,777
- Filed: 2021-04-19
- Published: 2021-08-05
- Earliest claimed: 2019-04-22
- Assignees: Innolux Corporation
- Applicants: InnoLux Corporation
- Inventors: Yu-Chia Huang; Yuan-Lin Wu; Kuan-Feng Lee; Tsung-Han Tsai
- Web page: https://patentgrep.com/patent/US20210240033A1

## CPC

- G02F 1/133504: {Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606)}
- G02B 6/0045: {by shaping at least a portion of the light guide}
- G02B 6/005: {provided by one optical element, or plurality thereof, placed on the light output side of the light guide}
- G02F 1/133305: {Flexible substrates, e.g. plastics, organic film}
- G02F 1/133528: {Polarisers}
- G02F 1/133567: {on the back side}
- G02F 1/13363: Birefringent elements, e.g. for optical compensation
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- 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
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A flexible electronic device includes a first flexible substrate and an optical film. The optical film is adhered to the first flexible substrate, the optical film includes a plurality of layers and a plurality of openings, and at least one of the plurality of openings penetrates through at least two of the plurality of layers of the optical film.

## Claims

### Claim 1

A flexible electronic device, comprising:
a first flexible substrate; and
an optical film adhered to the first flexible substrate, comprising a plurality of layers and a plurality of openings, wherein at least one of the plurality of openings penetrates through at least two of the plurality of layers of the optical film.

### Claim 2 (depends on 1)

The flexible electronic device according to claim 1, wherein the at least one of the plurality of openings penetrates through the optical film and exposes a portion of an outer surface of the first flexible substrate.

### Claim 3 (depends on 1)

The flexible electronic device according to claim 1, wherein the optical film is adhered to the first flexible substrate by an optical glue.

### Claim 4 (depends on 1)

The flexible electronic device according to claim 1, wherein the optical film is adhered to the first flexible substrate by coating.

### Claim 5 (depends on 1)

The flexible electronic device according to claim 1, wherein a thickness of the optical film is greater than or equal to a thickness of the first flexible substrate.

### Claim 6 (depends on 1)

The flexible electronic device according to claim 1, wherein a Young's modulus of the optical film is greater than a Young's modulus of the first flexible substrate.

### Claim 7 (depends on 1)

The flexible electronic device according to claim 1, wherein an area of the first flexible substrate is different from an area of the optical film.

### Claim 8 (depends on 7)

The flexible electronic device according to claim 7, wherein a ratio of the area of the first flexible substrate to the area of the optical film is greater than 1 and less than or equal to 1.2.

### Claim 9 (depends on 1)

The flexible electronic device according to claim 1, wherein the first flexible substrate has a first edge, the optical film has a second edge adjacent to the first edge, and a distance between the first edge of the first flexible substrate and the second edge of the optical film is in a range from 0.5 millimeters to 5 centimeters.

### Claim 10 (depends on 1)

The flexible electronic device according to claim 1, wherein a curvature radius of the first flexible substrate is substantially equal to a curvature radius of the optical film.

### Claim 11 (depends on 1)

The flexible electronic device according to claim 1, further comprising a backlight module, wherein the optical film is disposed between the first flexible substrate and the backlight module, and the backlight module comprising a light guide layer.

### Claim 12 (depends on 1)

The flexible electronic device according to claim 1, comprising a light source.

### Claim 13 (depends on 12)

The flexible electronic device according to claim 12, wherein the light source comprises a light emitting diode (LED), a micro-LED, a mini-LED, an organic light-emitting diode (OLED), or a quantum dot light emitting diode (QLED, QDLED).

### Claim 14 (depends on 1)

The flexible electronic device according to claim 1, comprising a second flexible substrate and a liquid crystal layer, wherein the liquid crystal layer is disposed between the first flexible substrate and the second flexible substrate.

### Claim 15 (depends on 14)

The flexible electronic device according to claim 14, further comprising another optical film adhered to the second flexible substrate, wherein the first flexible substrate and the second flexible substrate are disposed between the optical film and the another optical film.

### Claim 16 (depends on 15)

The flexible electronic device according to claim 15, wherein a first total thickness is defined as a thickness from an inner surface of the first flexible substrate to an outer surface of the optical film, a second total thickness is defined as a thickness from an inner surface of the second flexible substrate to an outer surface of the another optical film, and a ratio of the first total thickness to the second total thickness is in a range from 0.5 to 1.5.