Organic light-emitting display apparatus

Patent metadata

Field	Value
Publication number	US-10181503-B2
Application number	US-201715721288-A
Country	US
Kind code	B2
Filing date	Sep 29, 2017
Priority date	Oct 1, 2015
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

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

)

)

[
Inequality
]

wherein m represents the number of the upper layers, n i and d i represent a refraction index and a thickness of each of the upper layers, respectively, d BM represents a thickness of the light-shielding layer, n CF represents a refraction index of the color filter layer, n air represents a refraction index of air, and θ air represents a refraction angle in external air after light generated from the light emission layer passes through the color filter layer.

First claim

What is claimed is:

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 L 1 <L 2 <L 3 is satisfied when L 1 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, L 2 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 perpendicular to the major surface of the substrate, and L 3 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 perpendicular to the major surface of the substrate.

2. 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, and wherein the distance L 1 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.

3. 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, and wherein the third edge forms a third closed loop surrounding the emission area of the third light emission layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Dongki
• Bae Jongsung

Classifications

• H01L2251/301

  Electricity · mapped topic

• H01L27/3272 Primary

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic

• H01L2251/558

  Electricity · mapped topic

• H01L27/3211

  Electricity · mapped topic