# US 2021/0240041 A1 · Display apparatus comprising a color conversion pattern and a light blocking pattern disposed on a data pattern of a thin film transistor

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- Number: US 2021/0240041 A1
- Document ID: US20210240041A1
- Status: Published application
- Kind: A1
- Application number: 17/237,035
- Filed: 2021-04-21
- Published: 2021-08-05
- Earliest claimed: 2017-07-05
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Doyeong PARK; Kee-Bum PARK; Seongyoung LEE
- Web page: https://patentgrep.com/patent/US20210240041A1

## CPC

- G02F 1/133617: {Illumination with ultraviolet light; Luminescent elements or materials associated to the cell}
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G02F 1/133514: {Colour filters}
- G02F 1/136209: {Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element}
- G02F 1/01791: {Quantum boxes or quantum dots}
- G02F 1/133345: {Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence)}
- G02F 1/133357: {Planarisation layers}
- G02F 1/133548: {Wire-grid polarisers}
- G02F 1/133614: {using photoluminescence, e.g. phosphors illuminated by UV or blue light}
- G02F 1/136218: {Shield electrodes}
- G02F 1/136222: {Colour filters incorporated in the active matrix substrate}
- 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 apparatus includes a light unit to emit blue light, a first base substrate disposed on the light unit, a gate pattern disposed on the first base substrate and including a gate electrode, a first inorganic insulation layer disposed on the gate pattern, a data pattern disposed on the first inorganic insulation layer and including a drain electrode, a light blocking pattern disposed on the first inorganic insulation layer, a second inorganic insulation layer disposed on the data pattern and the first inorganic insulation layer, a pixel electrode disposed on the second inorganic insulation layer, and electrically connected to the drain electrode, a color conversion pattern overlapping the pixel electrode and including a quantum dot or phosphor, and a thin film transistor disposed on the first base substrate, wherein the light blocking pattern overlaps the thin film transistor, and the light blocking pattern is disposed on the first base substrate.

## Claims

### Claim 1

A display apparatus, comprising:
a light unit configured to emit blue light;
a first base substrate disposed on the light unit;
a gate pattern disposed on the first base substrate, the gate pattern comprising a gate electrode;
a first inorganic insulation layer disposed on the gate pattern;
a data pattern disposed on the first inorganic insulation layer, the data pattern comprising a drain electrode;
a light blocking pattern disposed on the first inorganic insulation layer;
a second inorganic insulation layer disposed on the data pattern and the first inorganic insulation layer;
a pixel electrode disposed on the second inorganic insulation layer, and electrically connected to the drain electrode;
a color conversion pattern overlapping the pixel electrode, the color conversion pattern comprising a quantum dot or phosphor; and
a thin film transistor disposed on the first base substrate,
wherein the light blocking pattern overlaps the thin film transistor, and the light blocking pattern is disposed on the first base substrate.

### Claim 2 (depends on 1)

The display apparatus of claim 1, further comprising a shielding electrode disposed on the light blocking pattern and overlapping the gate pattern or the data pattern.

### Claim 3 (depends on 2)

The display apparatus of claim 2, wherein the data pattern further comprises a source electrode and a data line,
the shielding electrode overlaps the data line, and
the light blocking pattern is disposed between the data line and the shielding electrode.

### Claim 4 (depends on 3)

The display apparatus of claim 3, wherein the shielding electrode comprises a first shielding electrode and a second shielding electrode which is spaced apart from the first shielding electrode and extends in parallel with the first shielding electrode.

### Claim 5 (depends on 3)

The display apparatus of claim 3, wherein the pixel electrode and the shielding electrode comprise transparent conductive material.

### Claim 6 (depends on 1)

The display apparatus of claim 1, wherein the light blocking pattern is disposed between the first inorganic insulation layer and the second inorganic insulation layer.

### Claim 7 (depends on 6)

The display apparatus of claim 6, wherein the first inorganic insulation layer and the second inorganic insulation layer are disposed between the pixel electrode and the first base substrate, and
the pixel electrode is located within 2 μm from the first base substrate.

### Claim 8 (depends on 6)

The display apparatus of claim 6, wherein an organic insulation layer is not present between the pixel electrode and the first base substrate.

### Claim 9 (depends on 1)

The display apparatus of claim 1, further comprising:
a second base substrate opposite to the first base substrate;
a light blocking layer disposed on the second base substrate; and
a transparent pattern disposed on the second base substrate,
wherein the color conversion pattern is disposed on the light blocking layer, and comprises a first color conversion pattern and a second color conversion pattern, the first color conversion pattern comprises a red quantum dot or red phosphor, and the second color conversion pattern comprises a green quantum dot or green phosphor.

### Claim 10 (depends on 9)

The display apparatus of claim 9, further comprising a polarizer disposed between the color conversion pattern and the second inorganic insulation layer and between the transparent pattern and the second inorganic insulation layer.

### Claim 11 (depends on 9)

The display apparatus of claim 9, further comprising:
a shielding electrode disposed on the light blocking pattern and overlapping the gate pattern or the data pattern; and
a second light blocking pattern disposed on the second base substrate and overlapping the shielding electrode.

### Claim 12 (depends on 1)

The display apparatus of claim 1, further comprising a main column spacer disposed on the second inorganic insulation layer and overlapping the gate pattern.

### Claim 13 (depends on 12)

The display apparatus of claim 12, wherein the gate pattern, the first inorganic insulation layer, the light blocking pattern, and the second inorganic insulation layer are disposed between the main column spacer and the first base substrate.

### Claim 14 (depends on 1)

The display apparatus of claim 1, wherein the light blocking pattern overlaps the thin film transistor, and the light blocking pattern is disposed between the thin film transistor and the second inorganic insulation layer.

### Claim 15 (depends on 14)

The display apparatus of claim 14, wherein the light blocking pattern is a red color filter.

### Claim 16 (depends on 1)

The display apparatus of claim 1, wherein the light blocking pattern has a thickness of about 1 to 2 μm.

### Claim 17 (depends on 2)

The display apparatus of claim 2, wherein the light blocking pattern is disposed between the shielding electrode and the first base substrate.

### Claim 18 (depends on 1)

The display apparatus of claim 1, wherein the light blocking pattern contacts an upper surface of the drain electrode.