Organic light-emitting diode display device and method of fabricating the same

US10811478B2 · kind B2 · utility

Assignee

• SAMSUNG ELECTRONICS CO., LTD. · KR

Inventors

• Dae Won Choi · Cheonan-si, KR
• Tae-Wook Kang · Suwon-si, KR
• Kyeong Su Ko · Hwaseong-si, KR
• Sang-Gab Kim · Seoul, KR
• Tae-Sung Kim · Seojong-myeon, KR
• Joon Geol Lee · Daechang-ri, KR
• Hyun Min CHO · Yongin-si, KR

Key dates

• Filing date: Apr 3, 2019
• Grant date: Oct 20, 2020
• Expiry date: Apr 3, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/351

Abstract

An organic light-emitting diode display device includes a pixel electrode, a pixel-defining layer, an organic emission layer, and a counter electrode. The pixel-defining layer includes an opening partially exposing the pixel electrode. The organic emission layer is disposed on the pixel electrode. The organic emission layer is disposed in the opening. The counter electrode is disposed on the organic emission layer. The counter electrode opposes the pixel electrode. The pixel-defining layer includes a first pixel-defining layer and a second pixel-defining layer. The first pixel-defining layer is disposed on the pixel electrode and includes an inorganic material. The second pixel-defining layer is disposed on the first pixel-defining layer and includes an organic material. A sidewall of the first pixel-defining layer that is closest to the opening is aligned with a sidewall of the second pixel-defining layer that is closest to the opening.