Electroluminescent device having color layers in patterned pixel define layer

US11056663B2 · kind B2 · utility

Assignee

• Au Optronics Corporation · TW

Inventors

• Hsin-Hui Wu · New Taipei, TW
• Kuan-Heng Lin · Kaohsiung, TW
• Meng-Ting Lee · Hsinchu, TW

Key dates

• Filing date: May 9, 2019
• Grant date: Jul 6, 2021
• Expiry date: Aug 20, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/361

Abstract

An electroluminescent device includes a substrate, a first electrode, a patterned pixel define layer, a first color layer, a first connection layer, a second color layer, and a second electrode. The patterned pixel define layer has a first opening. A projected area of the first opening on the substrate is A. The first color layer is located in the first opening and electrically connected to the first electrode. A projected area of the first connection layer on the substrate is B. The second color layer is located between the first connection layer and the second electrode. When a ratio of B to A is r1, light emitted by the electroluminescent device has a first color temperature. When the ratio of B to A is r2, the light emitted by the electroluminescent device has a second color temperature.