Pixel array with sub-pixels comprising vertically stacked light emitting layers

US10777612B2 · kind B2 · utility

Assignee

• Au Optronics Corporation · TW

Inventors

• Hung-Chieh Hu · Gongguan, TW
• Yi-Hong Chen · New Taipei, TW
• Chung-Chia Chen · La Habra, US
• Meng-Ting Lee · Hsinchu, TW

Key dates

• Filing date: Jun 12, 2018
• Grant date: Sep 15, 2020
• Expiry date: Jun 12, 2038

Classification

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

Abstract

A pixel array including a plurality of pixel units is provided. Each of the pixel unit includes at least a first color subpixel, a second color subpixel and a Nth color subpixel, wherein N is an integer and N≥3. The first color subpixel includes a first stacked light-emitting layer, the second color subpixel includes a second stacked light-emitting layer, and the Nth color subpixel includes a Nth stacked light-emitting layer. The first stacked light-emitting layer, the second stacked light-emitting layer, and the third stacked light-emitting layer each include a main light-emitting layer and an auxiliary light-emitting layer. The main light-emitting layer of the first color subpixel and the auxiliary light-emitting layer of the second color subpixel are the same material layer. The main light-emitting layer of the Nth color subpixel and the auxiliary light-emitting layer of the first color subpixel are the same material layer.