Electronic inks and displays and image displaying methods

US8356752B2 · kind B2 · utility

Assignee

• HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

• Yaron Grinwald · Gdera, IL
• Stella Stolin Roditi · Rehovot, IL
• Yigal Berson · Lod, IL
• Zhang-Lin Zhou · Palo Alto, US
• Gregg Alan Combs · Monmouth, US
• Jeffrey Todd Mabeck · Corvallis, US
• Albert Teishev · Nesher, IL

Key dates

• Filing date: Dec 30, 2008
• Grant date: Jan 22, 2013
• Expiry date: Mar 19, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2001/1678
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An electronic ink containing charged particles includes a combination of resin particles, a pigment, and a charge director. The resin particles exhibit an average particle size less than 1.0 micron and contain a resin that exhibits a molecular weight of 500 to 20,000. The pigment is loaded on the resin particles. The charge director can physically associate with the resin particles. The charged particles may be negative or positive.