Display articles with antiglare surfaces and thin, durable antireflection coatings

US11971519B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Shandon Dee Hart · Elmira, US
• Karl William Koch, III · Elmira, US
• Carlo Anthony Kosik Williams · Riverside, US
• Lin Lin · Riverside, US
• Cameron Robert Nelson · Elmira, US
• James Joseph Price · Corning, US
• Jayantha Senawiratne · Horseheads, US
• Florence Christine Monique Verrier · Corning, US
• David Lee Weidman · Corning, US

Key dates

• Filing date: Jul 8, 2021
• Grant date: Apr 30, 2024
• Expiry date: Jan 18, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2207/101
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A display article is described herein that includes: a substrate comprising a thickness and a primary surface; a textured surface region; and an antireflective coating disposed on the textured surface region. The textured surface region comprises structural features and an average texture height (Rtext) from 50 nm to 300 nm. The substrate exhibits a sparkle of less than 5%, as measured by PPD140, and a transmittance haze of less than 40%, at a 0° incident angle. The antireflective coating comprises alternating high refractive index and low refractive index layers. Each of the low index layers comprises a refractive index of less than or equal to 1.8, and each of the high index layers comprises a refractive index of greater than 1.8. The article also exhibits a first-surface average photopic specular reflectance (% R) of less than 0.3% at any incident angle from about 5° to 20° from normal at visible wavelengths.