Organic thin film transistor, flat panel display apparatus having the same, method of producing the organic thin film transistor and shadow mask used in the method

US7750350B2 · kind B2 · utility

Assignee

• SAMSUNG MOBILE DISPLAY CO., LTD. · KR

Inventors

• Joerg Fischer · Laboe, DE
• Arthur Mathea · Berlin, DE
• Mario Breithecker · Berlin, DE

Key dates

• Filing date: Apr 26, 2006
• Grant date: Jul 6, 2010
• Expiry date: Oct 5, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K71/166

Abstract

An organic thin film transistor with circular semiconducting elements applied to the substrate in a plurality of hexagonal patterns, a method of producing the same, and a shadow mask used in the method that allows for formation of the organic thin film transistor without need for precise alignment of the shadow mask on the substrate. The substrate has a plurality of thin film transistors, each having a drain electrode, a source electrode, a gate electrode, and a channel formed of semiconducting elements that, due to relative dimensions and alignments of the semiconducting elements, may connect both the drain electrode and the source electrode of one transistor but not two electrodes of adjacent transistors. The shadow mask includes openings in the hexagonal pattern, and the pattern is rotated at an angle of 15° relative to longitudinal axes of the drain and source electrodes to form channels.