Touch sensible organic light emitting device

Patent metadata

Field	Value
Publication number	US-2016195997-A1
Application number	US-201615071137-A
Country	US
Kind code	A1
Filing date	Mar 15, 2016
Priority date	Nov 28, 2008
Publication date	Jul 7, 2016
Grant date	—

Abstract

Embodiments of the present invention generally relate to a touch sensible organic light emitting device. The organic light emitting device according to an exemplary embodiment of the present invention comprises: a substrate; a thin film transistor disposed on the substrate; an organic light emitting element connected to the thin film transistor and receiving a data voltage; a plurality of encapsulation thin films disposed on the organic light emitting element, and encapsulating the thin film transistor and the organic light emitting element; a planarization layer disposed on the encapsulation thin film; and a touch sensor disposed on the planarization layer.

First claim

What is claimed is:

1 . An organic light emitting device comprising:
a substrate; a thin film transistor disposed on a first surface of the substrate; an organic light emitting element connected to the thin film transistor; a stacked layer disposed on the organic light emitting element and including a first layer, wherein the stacked layer includes a first portion overlapping the organic light emitting element in a direction perpendicular to the first surface of the substrate and a second portion connected to the first portion and including the same stacked layer as the first portion; a second layer disposed on the stacked layer; and a first touch conductive layer disposed on the second layer, wherein a distance between an upper surface of the first layer of the stacked layer of the first portion and the first surface of the substrate is less than a distance between an upper surface of the first layer of the second portion and the first surface of the substrate, and wherein a thickness of the second layer corresponding to the first portion is greater than a thickness of the second layer corresponding to the second portion.

2 . The organic light emitting device of claim 1 , wherein the second layer comprises an insulating material.

3 . The organic light emitting device of claim 2 , wherein the second layer comprises an organic material.

4 . The organic light emitting device of claim 3 , wherein the second layer has a substantially flat upper surface.

5 . The organic light emitting device of claim 1 , wherein the second layer is interposed between an uppermost surface of the stacked layer and the first touch conductive layer.

6 . The organic light emitting device of claim 1 , wherein the second layer is adhered to an uppermost surface of the stacked layer.

7 . The organic light emitting device of claim 1 , wherein the second layer contacts an uppermost surface of the stacked layer, and the first touch conductive layer is connected to the uppermost surface of the stacked layer via the second layer.

8 . The organic light emitting device of claim 1 , wherein the stacked layer comprises at least one organic material layer and at least one inorganic material layer.

9 . The organic light emitting device of claim 8 , wherein the at least one inorganic material layer comprises at least one selected from the group consisting of silicon oxide and silicon nitride.

10 . The organic light emitting device of claim 1 , wherein the first touch conductive layer comprises a transparent conductive material.

11 . The organic light emitting device of claim 1 , further comprising a second touch conductive layer disposed on the second layer.

12 . The organic light emitting device of claim 11 , further comprising a first insulating layer disposed on the first touch conductive layer.

13 . The organic light emitting device of claim 12 , further comprising a second insulating layer disposed on the second touch conductive layer.

14 . The organic light emitting device of claim 11 , wherein one of the first touch conductive layer and the second touch conductive layer is connected to a reference voltage terminal, and the other of the first touch conductive layer and the second touch conductive layer is connected to a sensing signal line disposed on the substrate.

15 . The organic light emitting device of claim 14 , further comprising:
a sensing signal processor configured to receive a changed voltage of the first touch conductive layer or the second touch conductive layer based on a touch on the first and second touch conductive layers, and to generate a sensing signal based on the changed voltage.

16 . The organic light emitting device of claim 1 , wherein the organic light emitting element comprises:
a pixel electrode connected to the thin film transistor and configured to receive a voltage through the thin film transistor; an organic light emitting member disposed on the pixel electrode; and a common electrode disposed on the organic light emitting member.

17 . The organic light emitting device of claim 1 , wherein the thin film transistor comprises:
a switching transistor; and a driving transistor connected to the switching transistor and configured to transmit an output current to the organic light emitting element.

18 . An organic light emitting device comprising:
a substrate; a thin film transistor disposed on a first surface of the substrate; an organic light emitting element connected to the thin film transistor; a stacked layer disposed on the organic light emitting element and including a first layer; a second layer disposed on the stacked layer; and a first touch conductive layer disposed on the second layer, wherein the first layer including a first portion overlapping the organic light emitting element in a direction perpendicular to the first surface of the substrate and a second portion connected to the first portion, wherein a distance between an upper surface of the first portion of the first layer and the first surface of the substrate is less than a distance between an upper surface of the second portion of the first layer and the first surface of the substrate, wherein a thickness of the second layer corresponding to the first portion is greater than a thickness of the second layer corresponding to the second portion.

19 . The organic light emitting device of claim 18 , wherein the second layer comprises an insulating material.

20 . The organic light emitting device of claim 19 , wherein the second layer comprises an organic material.

21 . The organic light emitting device of claim 20 , wherein the second layer has a substantially flat upper surface.

22 . The organic light emitting device of claim 18 , wherein the second layer is interposed between an uppermost surface of the stacked layer and the first touch conductive layer.

23 . The organic light emitting device of claim 18 , wherein the second layer is adhered to an uppermost surface of the stacked layer.

24 . The organic light emitting device of claim 18 , wherein the second layer contacts an uppermost surface of the stacked layer, and the first touch conductive layer is connected to the uppermost surface of the stacked layer via the second layer.

25 . The organic light emitting device of claim 18 , wherein the stacked layer comprises at least one organic material layer and at least one inorganic material layer.

26 . The organic light emitting device of claim 25 , wherein the at least one inorganic material layer comprises at least one selected from the group consisting of silicon oxide and silicon nitride.

27 . The organic light emitting device of claim 18 , wherein the first touch conductive layer comprises a transparent conductive material.

28 . The organic light emitting device of claim 18 , further comprising a second touch conductive layer disposed on the second layer.

29 . The organic light emitting device of claim 28 , further comprising a first insulating layer disposed on the first touch conductive layer.

30 . The organic light emitting device of claim 29 , further comprising a second insulating layer disposed on the second touch conductive layer.

31 . The organic light emitting device of claim 28 , wherein one of the first touch conductive layer and the

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Dong-Ki
• Min Hoon-Kee

Classifications

• H10K50/844

  Encapsulations · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title

• G06F3/045 Primary

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title