Flexible multi-layered cover lens stacks for foldable displays

US11789300B2 · kind B2 · utility

Assignee

• Applied Materials, Inc. · US

Inventors

• Manivannan Thothadri · Mountain View, US
• Harvey YOU · Mountain View, US
• Helinda NOMINANDA · San Jose, US
• Neil MORRISON · Seeheim-Jugenheim, DE
• Daniel Forster · Perth, AU
• Arvinder Chadha · San Jose, US

Key dates

• Filing date: Jun 16, 2020
• Grant date: Oct 17, 2023
• Expiry date: Nov 3, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/879
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Embodiments described and discussed herein generally relate to flexible or foldable display devices, and more specifically to flexible cover lens assemblies. In one or more embodiments, a flexible cover lens assembly contains a glass layer, an impact absorption layer disposed on the glass layer, a moisture barrier layer disposed on the impact absorption layer, a substrate disposed on the moisture barrier layer, a wet hardcoat layer having a nano-indentation hardness in a range from about 0.4 GPa to about 1.5 GPa and disposed on the substrate, an adhesion promotion layer disposed on the wet hardcoat layer, an anti-reflectance layer disposed on the adhesion promotion layer, a dry hardcoat layer having a nano-indentation hardness in a range from about 1 GPa to about 5 GPa and disposed on the anti-reflectance layer, and an anti-fingerprint coating layer disposed on the dry hardcoat layer.