# US 12,118,171 B2 · Display device

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- Number: US 12,118,171 B2
- Document ID: US12118171B2
- Status: Granted
- Kind: B2
- Application number: 18/146,058
- Filed: 2022-12-23
- Published: 2023-05-18
- Granted: 2024-10-15
- Earliest claimed: 2021-03-12
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Youngchan Kim; Jinoh Kwag; Jeongwoo Park; Jaeho You; Mingyeong Jo
- Web page: https://patentgrep.com/patent/US12118171B2

## CPC

- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- H10K 59/40: OLEDs integrated with touch screens
- H10K 59/50: OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
- G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
- H10K 59/12: Active-matrix OLED [AMOLED] displays
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display device includes a display unit, an upper electrode layer, a lower electrode layer and an electrochromic layer. The display unit includes a plurality of light emitting diodes disposed in a light emitting area. The upper electrode layer is disposed on the display unit, and includes a plurality of first electrode patterns and a plurality of second electrode patterns. The first electrode patterns are arranged in a first direction, and are electrically connected each other. The second electrode patterns are arranged in a second direction intersecting the first direction and are electrically connected each other. The lower electrode layer is disposed between the upper electrode layer and the display unit. The electrochromic layer is disposed between the upper electrode layer and the lower electrode layer, and includes an electrochromic pattern.

## Claims

### Claim 1

A display device comprising:
a light emitting diode disposed in a light emitting area;
an encapsulation layer disposed on the light emitting diode;
an electrode layer disposed on the encapsulation layer;
a black matrix disposed on the encapsulation layer, wherein the black matrix is between the electrode layer and the encapsulation layer;
a viewing angle adjusting layer directly disposed on the electrode layer; and
a window cover disposed on the viewing angle adjusting layer,
wherein the viewing angle adjusting layer includes a material which absorbs a portion of light generated from the light emitting diode,
wherein a light absorption rate of the material is independent of a voltage applied to the viewing angle adjusting layer, and
wherein at least some of the material is included in a portion of the viewing angle adjusting layer which is spaced apart from the light emitting diode in a plan view.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the viewing angle adjusting layer includes an organic material.

### Claim 3 (depends on 1)

The display device of claim 1,
wherein the black matrix is disposed in a light shielding area which surrounds the light emitting area.

### Claim 4 (depends on 3)

The display device of claim 3, wherein the portion of the viewing angle adjusting layer is in an opaque state.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the portion of the viewing angle adjusting layer in which the at least some of the material is included is non-overlapping with the light emitting diode in the plan view.