Organic light-emitting display apparatus

Patent metadata

Field	Value
Publication number	US-2021126065-A1
Application number	US-202016861488-A
Country	US
Kind code	A1
Filing date	Apr 29, 2020
Priority date	Oct 29, 2019
Publication date	Apr 29, 2021
Grant date	—

Abstract

An organic light-emitting display apparatus includes a red pixel, a green pixel, and a blue pixel, each including: a first insulating layer on a substrate; a connection electrode on the first insulating layer; a second insulating layer on the first insulating layer; an organic light-emitting diode on the second insulating layer, the organic light-emitting diode including a pixel electrode, an intermediate layer including an organic emission layer, and an opposite electrode; a pixel defining layer covering an edge of the pixel electrode and including an opening exposing the pixel electrode, the opening defining an emission area; and a via hole defined in the second insulating layer and through which the pixel electrode is connected to the connection electrode, and a spacing distance between the emission area and the via hole is different in each of the red pixel, the green pixel, and the blue pixel.

First claim

What is claimed is:

1 . An organic light-emitting display apparatus comprising
a red pixel, a green pixel, and a blue pixel, each comprising: a first insulating layer on a substrate; a connection electrode on the first insulating layer; a second insulating layer on the first insulating layer to cover the connection electrode; an organic light-emitting diode on the second insulating layer, the organic light-emitting diode comprising a pixel electrode, an intermediate layer comprising an organic emission layer, and an opposite electrode; a pixel defining layer covering an edge of the pixel electrode and comprising an opening exposing a central portion of the pixel electrode, the opening defining an emission area; and a via hole defined in the second insulating layer and through which the pixel electrode is connected to the connection electrode, wherein a spacing distance between the emission area and the via hole is different in each of the red pixel, the green pixel, and the blue pixel.

2 . The organic light-emitting display apparatus of claim 1 , wherein
in the red pixel, 0≤d(R)≤1.2 μm or d(R)≥5 μm, where d(R) is the spacing distance between the emission area and the via hole in the red pixel, and in the blue pixel, 0≤d(B)≤1.2 μm or d(B)≥5 μm, where d(B) is the spacing distance between the emission area and the via hole in the blue pixel.

3 . The organic light-emitting display apparatus of claim 1 , wherein, in the green pixel, 0≤d(G)≤2.8 μm or d(G)≥5 μm, where d(G) is the spacing distance between the emission area and the via hole in the green pixel.

4 . The organic light-emitting display apparatus of claim 1 , wherein, in at least one of the red pixel, the green pixel, and the blue pixel, an upper surface of the second insulating layer in the emission area has a first slope portion and a second slope portion which are sloped in different directions from each other.

5 . The organic light-emitting display apparatus of claim 1 , wherein, in at least one of the red pixel, the green pixel, and the blue pixel, an upper surface of the second insulating layer in the emission area is parallel to an upper surface of the substrate.

6 . The organic light-emitting display apparatus of claim 1 , further comprising a first wiring on a same layer as the connection electrode and located adjacent to the emission area of the green pixel,
wherein a spacing distance between the emission area of the green pixel and the first wiring is greater than or equal to 1.2 μm.

7 . The organic light-emitting display apparatus of claim 1 , further comprising a first wiring and a second wiring, which are on a same layer as the connection electrode with the emission area therebetween,
wherein a spacing distance between the first wiring and the emission area is equal to a spacing distance between the second wiring and the emission area.

8 . The organic light-emitting display apparatus of claim 7 , wherein the spacing distance between the first wiring and the emission area is less than or equal to 1.2 μm.

9 . The organic light-emitting display apparatus of claim 1 , further comprising a first wiring and a second wiring, which are on a same layer as the connection electrode with the emission area therebetween, wherein a spacing distance between the first wiring and the emission area is different from a spacing distance between the second wiring and the emission area, and
the spacing distance between the first wiring and the emission area is greater than the spacing distance between the second wiring and the emission area by 1.2 μm or more.

10 . The organic light-emitting display apparatus of claim 1 , wherein the red pixel, the green pixel, and the blue pixel are arranged in a pentile matrix structure, and
an emission area of the green pixel is smaller than emission areas of the red pixel and the blue pixel.

11 . An organic light-emitting display apparatus comprising:
a first insulating layer on a substrate; a connection electrode on the first insulating layer; a second insulating layer on the first insulating layer to cover the connection electrode; an organic light-emitting diode on the second insulating layer, the organic light-emitting diode comprising a pixel electrode, an intermediate layer comprising an organic emission layer, and an opposite electrode; a pixel defining layer covering an edge of the pixel electrode and comprising an opening exposing a central portion of the pixel electrode, the opening defining an emission area; and a via hole defined in the second insulating layer and through which the pixel electrode is connected to the connection electrode, wherein an upper surface of the second insulating layer comprises a flat portion parallel to an upper surface of the substrate, a first slope portion having a first slope angle with respect to the upper surface of the substrate, and a second slope portion having a second slope angle with respect to the upper surface of the substrate, the second slope angle greater than the first slope angle, and the second slope portion is located closer to the via hole than the first slope portion.

12 . The organic light-emitting display apparatus of claim 11 , wherein the emission area overlaps with the first slope portion and the second slope portion.

13 . The organic light-emitting display apparatus of claim 12 , wherein an area in which the first slope portion overlaps with the emission area is larger than an area in which the second slope portion overlaps with the emission area.

14 . The organic light-emitting display apparatus of claim 11 , wherein the emission area overlaps with the flat portion and does not overlap with the second slope portion.

15 . The organic light-emitting display apparatus of claim 11 , further comprising a first wiring and a second wiring, which are on a same layer as the connection electrode with the emission area therebetween, wherein a spacing distance between the first wiring and the emission area is equal to a spacing distance between the second wiring and the emission area.

16 . The organic light-emitting display apparatus of claim 15 , wherein the spacing distance between the first wiring and the emission area is less than or equal to 1.2 μm.

17 . The organic light-emitting display apparatus of claim 15 , wherein the first insulating layer is bent according to shapes of the first wiring and the second wiring.

18 . The organic light-emitting display apparatus of claim 11 , further comprising a first wiring and a second wiring, which are on a same layer as the connection electrode with the emission area therebetween, wherein a spacing distance between the first wiring and the emission area is different from a spacing distance between the second wiring and the emission area, and
the spacing distance between the first wiring and the emission area is greater than the spacing distance between the second wiring and the emission area by 1.2 μm or more.

19 . The organic light-emitting display apparatus of claim 11 , wherein the organic light-emitting display apparatus comprises a red pixel, a green pixel, and a blue pixel, and
a spacing distance between the emission area and the via hole is different in each of the red pixel, the green pixel, and the blue pixel.

20 . The organic light-emitting display apparatus of claim 19 , wherein the red pixel, the green pixel, and the blue pixel are arranged in a pentile matrix structure, and
an emission area of the green pixel is smaller than emission areas of the red pixe

Assignees

• Samsung Display Co Ltd

Inventors

• Kwon Wonju
• Sung Hyangki
• Jeong Heeseong
• Hong Sangmin

Classifications

• H10K59/80515

  characterised by their shape · CPC title

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/123 Primary

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title

• H10K50/80

  Constructional details · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title