# US 2018/0026087 A1 · Organic light-emitting display apparatus

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- Number: US 2018/0026087 A1
- Document ID: US20180026087A1
- Status: Published application
- Kind: A1
- Application number: 15/721,288
- Filed: 2017-09-29
- Published: 2018-01-25
- Earliest claimed: 2015-10-01
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Dongki Lee; Jongsung Bae
- Web page: https://patentgrep.com/patent/US20180026087A1

## CPC

- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K 59/35: comprising red-green-blue [RGB] subpixels
- H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- H10K 59/879: {comprising refractive means, e.g. lenses}
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- H10K 85/10: Organic polymers or oligomers
- H10K 85/111: {comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene}
- H10K 2102/00: Constructional details relating to the organic devices covered by this subclass
- H10K 2102/351: {Thickness}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

An organic light-emitting display apparatus includes a pixel electrode, a light emission layer over the pixel electrode, an opposite electrode covering the light emission layer, a plurality of upper layers over the opposite electrode, a light-shielding layer over the upper layers. A distance L between an edge of an emission area of the light emission layer and an edge of the light-shielding layer when viewed in a thickness direction satisfies Inequality below: L ≥ ∑ i = 1 m  d i  tan  ?  ( sin - 1  ( n air n i  sin   θ air ) ) + d BM  tan  ( sin - 1  ( n air n CF  sin   θ air ) )   ?  indicates text missing or illegible when filed [ Inequality ] wherein m represents the number of the upper layers, ni and di represent a refraction index and a thickness of each of the upper layers, respectively, dBM represents a thickness of the light-shielding layer, nCF represents a refraction index of the color filter layer, n air represents a refraction index of air, and θair represents a refraction angle in external air after light generated from the light emission layer passes through the color filter layer.

## Claims

### Claim 1

An organic light-emitting display apparatus comprising:
an array of pixels disposed over a substrate, each pixel comprising:
a first sub-pixel comprising a first light emission layer configured to emit first light having a first wavelength within a first wavelength range;
a second sub-pixel comprising a second light emission layer configured to emit second light having a second wavelength within a second wavelength range, the second wavelength of the second light being longer than a wavelength of light within the first wavelength range; and
a third sub-pixel comprising a third light emission layer configured to emit third light having a third wavelength within a third wavelength range, the third wavelength of the third light being longer than a wavelength of light within the second wavelength range;
an encapsulating layer disposed over the first to third sub-pixels;
a light-shielding layer disposed over the encapsulating layer; and
a color filter layer disposed on the encapsulating layer,
wherein L1<L2<L3 is satisfied when L1 represents a distance between an edge of an emission area of the first light emission layer and a first edge of the light-shielding layer when viewed in a viewing direction perpendicular to a major surface of the substrate, L2 represents a distance between an edge of an emission area of the second light emission layer and a second edge of the light-shielding layer when viewed in the viewing direction, and L3 represents a distance between an edge of an emission area of the third light emission layer and a third edge of the light-shielding layer when viewed in the viewing direction.

### Claim 2 (depends on 1)

The organic light-emitting display apparatus of claim 1, wherein the first edge of the light-shielding layer defines an opening through which light emitted from the first light emission layer travels, wherein the distance L1 is determined such that substantially the entire amount of the light emitted from the first light emission layer toward the encapsulation layer travels through the opening.

### Claim 3 (depends on 1)

The organic light-emitting display apparatus of claim 1, wherein the first edge forms a first closed loop surrounding the emission area of the first light emission layer, wherein the second edge forms a second closed loop surrounding the emission area of the second light emission layer, wherein the third edge forms a third closed loop surrounding the emission area of the third light emission layer.