Active matrix organic electroluminescent display device and method of fabricating the same

US7109650B2 · kind B2 · utility

Assignee

• LG Philips LCD Co., Ltd. · KR

Inventors

• Jae-Yong Park · Seojong-myeon, KR
• Choong-Keun Yoo · Incheon, KR
• Ock-Hee Kim · Anyang-si, KR
• Tae Joon Ahn · Seoul, KR

Key dates

• Filing date: Jun 27, 2003
• Grant date: Sep 19, 2006
• Expiry date: Oct 22, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/1201

Abstract

An active matrix organic electroluminescent display device includes a substrate including a light emitting region having sub pixel regions, a plurality of switching elements on the substrate in the sub pixel regions, a first passivation layer covering the plurality of switching elements and having a plurality of first contact holes exposing the plurality of switching elements, a plurality of first electrodes on the first passivation layer, each first electrode connected to each switching element through each first contact hole, a second passivation layer on the plurality of first electrodes, the second passivation layer having a plurality of openings exposing the plurality of first electrodes and covering edge portions of the plurality of first electrodes, a plurality of organic electroluminescent layers on the second passivation layer, each organic electroluminescent layer contacting each first electrode through each opening, and a second electrode on the plurality of organic electroluminescent layers, wherein the first passivation layer is made of a first organic material having a planarized upper surface and the second passivation layer is made of a second organic material havin…