Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2007-04-10
2011-10-18
Sugarman, Scott J (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S290000, C359S291000
Reexamination Certificate
active
08040591
ABSTRACT:
A reflective display having a plurality of transparent hemi-beads (60), each having a reflective region (80) surrounding a non-reflective region (82). Light absorbing, electrostatically charged ions are dissolved in an electrophoretic medium (20) maintained adjacent the hemi-beads. A voltage applied across the medium moves many ions into an evanescent wave region adjacent the hemi-beads where the ions absorb light, frustrating TIR at the reflective regions. Ions in the evanescent wave region also absorb light which does not undergo TIR and which would otherwise pass through the non-reflective regions. An opposite voltage applied across the medium moves many ions away from the hemi-beads, allowing light to undergo TIR at the reflective regions. The display's brightness can be enhanced by providing a backplane electrode (48) having reflective regions (108; 110, 112) for reflecting back through the hemi-beads light which passes through the non-reflective regions to the backplane electrode.
REFERENCES:
patent: 5866204 (1999-02-01), Robbie et al.
patent: 5999307 (1999-12-01), Whitehead et al.
patent: 6064784 (2000-05-01), Whitehead et al.
patent: 6130732 (2000-10-01), Crawford et al.
patent: 6206065 (2001-03-01), Robbie et al.
patent: 6215920 (2001-04-01), Whitehead et al.
patent: 6248422 (2001-06-01), Robbie et al.
patent: 6753846 (2004-06-01), Takeuchi et al.
patent: 6865011 (2005-03-01), Whitehead et al.
patent: 6885496 (2005-04-01), Whitehead et al.
patent: 6891658 (2005-05-01), Whitehead et al.
patent: 2005-2833 (2005-02-01), None
patent: 03/075085 (2003-09-01), None
patent: 2006/108285 (2006-10-01), None
Apr. 26, 2010 office action issued by the Korean Intellectual Property Office in respect of corresponding Korean patent application serial No. 10-2008-7023948.
“Transparent Conductive Carbon Nanotube Films,” Z. Wu et al., Science vol. 305, No. 5668, pp. 1273-1276.
“A High Reflectance, Wide Viewing Angle Reflective Display Using Total Internal Reflection in Micro-Hemispheres,” Mossman, M.A. et al., Society for Information Display, 23rd International Display Research Conference, pp. 233-236, Sep. 15-18, 2003, Phoenix, AZ.
Oyen Wiggs Green & Mutala LLP
Sahle Mahidere
Sugarman Scott J
The University of British Columbia
LandOfFree
Ionic electrophoresis in TIR-modulated reflective image... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ionic electrophoresis in TIR-modulated reflective image..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ionic electrophoresis in TIR-modulated reflective image... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4263706