Display with controlled formation of bubbles

US7920317B2 · kind B2 · utility

Assignee

• Pixtronix, Inc. · US

Inventors

• Kar Yue Lee · Burlington, US
• Eugene E. Fike, III · Amesbury, US
• Mark B. Andersson · Northborough, US
• John J. Fijol · Shrewsbury, US
• Jorma Antero Peltola · Chelmsford, US
• Susan Oakley · Oxford, US
• Roger W. Barton · Santa Clara, US

Key dates

• Filing date: Aug 4, 2008
• Grant date: Apr 5, 2011
• Expiry date: Jan 20, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B26/004
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to a display apparatus including a first substrate supporting an array of light modulators, a second substrate separated from the first substrate by a gap, a fluid substantially filling the gap, sealing material joining the first substrate to the second substrate, and a bubble trapping region within a space enclosed by the sealing material for substantially constraining a location of a bubble trapped within the gap. In some embodiments, the bubble trapping region extends along a majority of a side of at least one of the substrates. In some embodiments, the fluid has a viscosity less than 70 centipoise.