# US 10,312,228 B2 · Display device

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- Number: US 10,312,228 B2
- Document ID: US10312228B2
- Status: Granted
- Kind: B2
- Application number: 15/588,707
- Filed: 2017-05-08
- Published: 2018-07-26
- Granted: 2019-06-04
- Earliest claimed: 2017-01-25
- Assignees: Innolux Corporation
- Applicants: InnoLux Corporation
- Inventors: Jia-Yuan Chen; Hsiao-Lang Lin; Jui-Jen Yueh; Kuan-Feng Lee
- Web page: https://patentgrep.com/patent/US10312228B2

## CPC

- H10K 77/111: {Flexible substrates}
- G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)}
- G02F 1/133305: {Flexible substrates, e.g. plastics, organic film}
- G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels}
- G02F 1/1343: Electrodes {(reflective electrodes G02F1/133553)}
- G02F 1/1347: Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F 1/1533: {structural features not otherwise provided for}
- H10D 30/67: Thin-film transistors [TFT] {(Stacked nanowire, nanosheet or nanoribbon FETs H10D30/501)}
- H10D 30/6729: {characterised by the electrodes}
- H10D 62/116: {adjoining the input or output regions of field-effect devices, e.g. adjoining source or drain regions}
- H10D 86/471: {having different architectures, e.g. having both top-gate and bottom-gate TFTs}
- H10D 86/60: wherein the TFTs are in active matrices
- H10D 86/85: characterised by only passive components
- H10D 89/213: {in field-effect devices}
- H10K 50/8445: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- H10K 59/00: Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- C09K 2323/00: Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K 2323/03: Viewing layer characterised by chemical composition
- G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED}
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- 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
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A display device includes a light-emitting unit and a light conversion layer. The light conversion layer is disposed on the light-emitting unit, and the light conversion layer includes plural quantum dot portions and a first shielding portion surrounding the plural quantum dot portions. One of the plural quantum dot portions has a surface and at least a part of the surface is a curved surface.

## Claims

### Claim 1

A display device, comprising:
a light-emitting unit;
a light conversion layer, disposed on the light-emitting unit, the light conversion layer including plural quantum dot portions, a first shielding portion surrounding the plural quantum dot portions, and plural of reflective portions disposed between the first shielding portion and the plural quantum dot portions respectively, wherein a height of the first shielding portion is greater than a height of one of the plural quantum dot portions, and a height of one of the plural of reflective portions is greater than a height of one of the plural quantum dot portions;
a liquid crystal layer disposed between the light-emitting unit and the light conversion layer;
a second shielding portion disposed between the liquid crystal layer and the first shielding portion, wherein the second shielding portion is overlapped with the first shielding portion, and a width of the second shielding portion is greater than a width of the first shielding portion;
a first polarizer disposed between the light conversion layer and the liquid crystal layer; and
a second polarizer disposed between the light-emitting unit and the liquid crystal layer;
wherein one of the plural quantum dot portions has a surface and at least a part of the surface is a curved surface.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the curved surface is a convex surface.

### Claim 3 (depends on 1)

The display device of claim 1, wherein the curved surface is a concave surface.

### Claim 4 (depends on 1)

The display device of claim 1, wherein a thickness of one of the plural quantum dot portions is between 3 μm and 130 μm.

### Claim 5 (depends on 4)

The display device of claim 4, wherein the thickness of the one of the plural quantum dot portions is between 3 μm and 70 μm.

### Claim 6 (depends on 1)

The display device of claim 1, wherein a concentration of quantum dot particles in one of the plural quantum dot portions is between 0.3 wt % and 13.4 wt %.

### Claim 7 (depends on 6)

The display device of claim 6, wherein the concentration of quantum dot particles in the one of the plural quantum dot portions is between 0.5 wt % and 13.4 wt %.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the first shielding portion has a first thickness and the second shielding portion has a second thickness, wherein a ratio of the first thickness to the second thickness is between 1.5 and 650.

### Claim 9 (depends on 1)

The display device of claim 1, wherein a difference between the second width and the first width is between 2 μm and 62 μm.

### Claim 10 (depends on 1)

The display device of claim 1, the light conversion layer further including plural filtering portions respectively disposed on some of the plural quantum dot portions.

### Claim 11 (depends on 1)

The display device of claim 1, further comprising a TFT substrate, wherein at least one thin-film transistor is disposed on the TFT substrate, and the TFT substrate is disposed between the light-emitting unit and the light conversion layer.

### Claim 12 (depends on 1)

The display device of claim 1, wherein the first shielding portion includes two or more first shielding units stacked with each other, and the two or more first shielding units respectively include different materials.

### Claim 13 (depends on 1)

The display device of claim 1, wherein at least one of the first polarizer and the second polarizer comprises a wire grid polarizer.

### Claim 14 (depends on 1)

The display device of claim 1, wherein the light-emitting unit produces blue light or ultraviolet (UV) light.