# US 2019/0172873 A1 · Transparent organic light emitting diode display

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- Number: US 2019/0172873 A1
- Document ID: US20190172873A1
- Status: Published application
- Kind: A1
- Application number: 16/204,106
- Filed: 2018-11-29
- Published: 2019-06-06
- Earliest claimed: 2017-12-06
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: Seokwon JI; Jongmoo KIM
- Web page: https://patentgrep.com/patent/US20190172873A1

## CPC

- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 59/121: characterised by the geometry or disposition of pixel elements
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/87: {Passivation; Containers; Encapsulations}
- H10K 59/879: {comprising refractive means, e.g. lenses}
- H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A transparent organic light emitting diode display is disclosed. The transparent organic light emitting diode display includes a substrate, a pixel disposed on the substrate, the pixel including a light-transmitting area and a light-emitting area, an organic light emitting diode disposed in the light-emitting area of the substrate, an encapsulation substrate that is bonded face to face opposite the substrate, a color filter disposed in the encapsulation substrate corresponding to the light-emitting area, and a color compensation layer disposed in the encapsulation substrate corresponding to the light-transmitting area.

## Claims

### Claim 1

A transparent organic light emitting diode display, comprising:
a substrate;
a pixel disposed on the substrate, the pixel including a light-transmitting area and a light-emitting area;
an organic light emitting diode disposed in the light-emitting area of the substrate;
an encapsulation substrate that is bonded face to face opposite the substrate;
a color filter disposed in the encapsulation substrate corresponding to the light-emitting area; and
a color compensation layer disposed in the encapsulation substrate corresponding to the light-transmitting area.

### Claim 2 (depends on 1)

The transparent organic light emitting diode display of claim 1, wherein the organic light emitting diode includes:
an anode electrode;
an organic light emitting layer; and
a cathode electrode,
wherein at least one of the organic light emitting layer and the cathode electrode is disposed to extend to the light-transmitting area.

### Claim 3 (depends on 1)

The transparent organic light emitting diode display of claim 1, wherein the color compensation layer is formed by alternately stacking two or more inorganic films having different refractive indices.

### Claim 4 (depends on 1)

The transparent organic light emitting diode display of claim 1, wherein the color compensation layer is formed by alternately stacking a plurality of silicon oxide thin films and a plurality of titanium oxide thin films.

### Claim 5 (depends on 1)

The transparent organic light emitting diode display of claim 1, further comprising:
an antireflection layer disposed on an outer surface of the encapsulation substrate corresponding to the light-emitting area.

### Claim 6 (depends on 1)

The transparent organic light emitting diode display of claim 1, further comprising:
a driving element, which is disposed under the organic light emitting diode in the light-emitting area, configured to drive the organic light emitting diode.

### Claim 7 (depends on 6)

The 1 transparent organic light emitting diode display of claim 6, further comprising:
a scan line, a driving current line, and a data line disposed to define the pixel on the substrate,
wherein the driving element includes:
a switching thin film transistor connected between the scan line and the data line; and
a driving thin film transistor connected between the switching thin film transistor and the organic light emitting diode.

### Claim 8 (depends on 7)

The transparent organic light emitting diode display of claim 7, further comprising:
an auxiliary capacitor connected with the switching thin film transistor, the driving thin film transistor and the organic light emitting diode.

### Claim 9 (depends on 2)

The transparent organic light emitting diode display of claim 2, wherein the anode electrode is not disposed in the light-transmitting area.

### Claim 10 (depends on 2)

The transparent organic light emitting diode display of claim 2, wherein only the cathode electrode is disposed to extend to the light-transmitting area.