Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-2020119113-A1
Application number	US-201916384806-A
Country	US
Kind code	A1
Filing date	Apr 15, 2019
Priority date	Oct 16, 2018
Publication date	Apr 16, 2020
Grant date	—

Abstract

An organic light emitting display device including a base layer; an insulating layer disposed on the base layer and including a flat region having a flat surface and a lens region having a concave or convex surface; a dam disposed on the insulating layer and defining an opening exposing the lens region; and a color filter disposed on the lens region of the insulating layer and filling the opening, The dam includes a sensing electrode.

First claim

What is claimed is:

1 . An organic light emitting display device, comprising:
a base layer; an insulating layer disposed on the base layer and comprising a flat region having a flat surface and a lens region having a concave or convex surface; a dam disposed on the insulating layer and defining an opening exposing the lens region; and a color filter disposed on the lens region of the insulating layer and filling the opening, wherein the dam comprises a sensing electrode.

2 . The organic light emitting display device of claim 1 , wherein the dam comprises a liquid-repellent material layer disposed on the sensing electrode.

3 . The organic light emitting display device of claim 2 , wherein the dam further comprises a black matrix disposed between the sensing electrode and the liquid-repellent material layer.

4 . The organic light emitting display device of claim 3 , wherein the black matrix covers the sensing electrode.

5 . The organic light emitting display device of claim 2 , further comprising a conductive layer between the base layer and the insulating layer, wherein:
the insulating layer includes a contact hole exposing the conductive layer; and the conductive layer and the sensing electrode contact each other through the contact hole.

6 . The organic light emitting display device of claim 5 , wherein the conductive layer has a three-layer structure of titanium (Ti)/aluminum (Al)/titanium (Ti).

7 . The organic light emitting display device of claim 1 , wherein the lens region has a concave shape, and a refractive index of the color filter is greater than a refractive index of the insulating layer.

8 . The organic light emitting display device of claim 1 , wherein the sensing electrode is disposed directly on the insulating layer.

9 . The organic light emitting display device of claim 1 , wherein the sensing electrode has a three-layer structure of titanium (Ti)/aluminum (Al)/titanium (Ti).

10 . The organic light emitting display device of claim 1 , wherein a bending area and a non-bending area are defined in the base layer.

11 . The organic light emitting display device of claim 1 , wherein the insulating layer includes an inclined surface in the lens region, and the inclined surface has a slope of 50° to 80°.

12 . The organic light emitting display device of claim 1 , wherein the lens region has a width of 20 μm to 26 μm.

13 . The organic light emitting display device of claim 1 , wherein:
the base layer defines a light emitting region and a non-light emitting region surrounding the light emitting region; the dam is disposed in the non-light emitting region; and the lens region overlaps the light emitting region.

14 . An organic light emitting display device, comprising:
a base substrate; a pixel electrode disposed on the base substrate; a pixel defining layer disposed on the pixel electrode and having a first opening exposing a part of the pixel electrode; an organic light emitting layer disposed on the exposed pixel electrode; a common electrode disposed on the organic light emitting layer and the pixel defining layer; an encapsulation layer disposed on the common electrode; a first touch conductive layer disposed on the encapsulation layer; an insulating layer disposed on the first touch conductive layer; a dam disposed on the insulating layer and having a second opening exposing at least a part of the insulating layer; and a color filer disposed on the exposed insulating layer, wherein the dam comprises:
a second touch conductive layer disposed on the insulating layer;
a black matrix disposed on the second touch conductive layer; and
a liquid-repellent material layer disposed on the black matrix.

15 . The display device of claim 14 , wherein the insulating layer includes a flat region overlapping the pixel defining layer and a lens region overlapping the first opening.

16 . The display device of claim 14 , wherein the second opening overlaps the first opening.

17 . The display device of claim 16 , wherein a width of the first opening is less than a width of the second opening.

18 . The display device of claim 14 , wherein:
the second touch conductive layer and the black matrix are in direct contact with each other; and the black matrix and the liquid-repellent material layer are in direct contact with each other.

19 . The display device of claim 14 , wherein the insulating layer comprises an organic material.

20 . The display device of claim 14 , wherein the color filter comprises a material denser than a material of the insulating layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Hyeon Bum
• Kim Hyoeng Ki
• Woo Jun Hyuk
• Park Kwang Woo

Classifications

• G06F2203/04112

  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 · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/044

  by capacitive means · CPC title

• H01L51/5256

  Electricity · mapped topic