Touch sensible organic light emitting device

Patent metadata

Field	Value
Publication number	US-2023363236-A1
Application number	US-202318222475-A
Country	US
Kind code	A1
Filing date	Jul 16, 2023
Priority date	Nov 28, 2008
Publication date	Nov 9, 2023
Grant date	—

Abstract

An organic light emitting device includes: 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 on a surface of the substrate; a pixel electrode electrically connected to the thin film transistor; a partition defining an opening on the pixel electrode; an organic light emitting layer comprising a portion disposed in the opening; a common electrode on the organic light emitting layer and the partition; at least two encapsulation layers formed on the common electrode to encapsulate an organic light emitting element comprising the pixel electrode, the organic light emitting layer, and the common electrode, the at least two encapsulation layers comprising at least one inorganic layer comprising a first portion overlapping the opening and a second portion overlapping the partition without the opening and adjacent to the first portion in a plan view, the at least one inorganic layer comprising silicon nitride or silicon oxide; a first planarization layer formed on the at least two encapsulation layers; and a touch sensor formed on the first planarization layer without any adhesive layer for adhering between the touch sensor and the first planarization layer, wherein:
a first distance between a first surface of the first portion and the surface of the substrate is less than a second distance between a second surface of the second portion and the surface of the substrate;
the touch sensor comprises a capacitive conductive layer; and
the first planarization layer is interposed between the touch sensor and the at least two encapsulation layers.

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