Transparent body for a touch panel manufacturing method and system for manufacturing a transparent body for a touch screen panel

US9920421B2 · kind B2 · utility

Assignee

• Applied Materials, Inc. · US

Inventors

• Hans-Georg Lotz · Grundau, DE
• Neil MORRISON · Seeheim-Jugenheim, DE
• Thomas DEPPISCH · Aschaffenburg, DE

Key dates

• Filing date: Dec 9, 2013
• Grant date: Mar 20, 2018
• Expiry date: Dec 4, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K2201/10128
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A process for manufacturing a transparent body for a touch screen panel is described. The process includes: depositing a first transparent layer stack over a flexible transparent substrate, wherein said first transparent layer stack includes at least a first dielectric film with a first refractive index, and a second dielectric film with a second refractive index different from the first refractive index; providing a transparent conductive film over the first transparent layer stack; depositing a layer of a conductive material over the transparent conductive film; providing a polymer layer over the layer of a conductive material; imprinting a pattern, e.g. a 3D pattern, on the polymer layer; etching the layer of the conductive material based upon the pattern to form conductive paths for the touch screen panel; and etching the transparent conductive film based upon the pattern to form a structured transparent conductive pattern for touch detection.