Optimal bank shapes for inkjet printing

US7132788B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Rahul Gupta · Santa Clara, US
• Andrew Ingle · Tucson, US
• Sriram Natarajan · Salt Lake City, US
• Stefan Grebler · Sunnyvale, US

Key dates

• Filing date: Sep 9, 2003
• Grant date: Nov 7, 2006
• Expiry date: Apr 30, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/35

Abstract

The shapes of the photo-resist layer “banks” which define pockets for inkjet printing or other patterned processes are optimized to provide a more uniform drying profile for substances which are to be deposited in those pockets and dried therein. Preferably, the shapes of the banks are “mushroom” shaped such that a portion of the photo-resist layer overhangs the exposed lower electrode layer.