Display with color conversion layer and isolation walls

US11888093B2 · kind B2 · utility

Assignee

• Applied Materials, Inc. · US

Inventors

• Daihua Zhang · Newark, US
• Yingdong Luo · Newark, US
• Mingwei Zhu · Sunnyvale, US
• Hou T. Ng · Campbell, US
• Sivapackia Ganapathiappan · Palo Alto, US
• Nag B. Patibandla · Pleasanton, US

Key dates

• Filing date: Jul 29, 2021
• Grant date: Jan 30, 2024
• Expiry date: Jul 29, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/0364
• WIPO field: Semiconductors
• WIPO sector: Electrical engineering

Abstract

A multi-color display includes a backplane having backplane circuitry, an array of micro-LEDs electrically integrated with backplane circuitry of the backplane, a first color conversion layer over each of a first plurality of light emitting diodes, a second color conversion layer over each of a second plurality of light emitting diodes, and a plurality of isolation walls separating adjacent micro-LEDs of the array. The micro-LEDs of the array are configured to generate illumination of the same wavelength range, the first color conversion layer converts the illumination to light of a first color, and the second color conversion layer converts the illumination to light of a different second color.