Ultrathin transparent EMI shielding film comprising a polymer basecoat and crosslinked polymer transparent dielectric layer

US8350451B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Clark I. Bright · Arcadia, US
• John D. Le · Woodbury, US
• Robert C. Fitzer · North Oaks, US
• Stephen P. Maki · North St. Paul, US

Key dates

• Filing date: Jun 5, 2008
• Grant date: Jan 8, 2013
• Expiry date: Sep 16, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/287
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Provided are multi-component films useful as optical display filters. The films include a transparent substrate, a nucleation layer, an electrically-conductive layer, a barrier layer, and a dielectric layer. The films can provide high visible transmission, are corrosion-resistant, and can provide shielding from electromagnetic interference (EMI shielding). The optical display filters are useful as components of active optical devices such as display panels including liquid crystal display panels such as those used on mobile hand-held phones.