Patent
Electrophoretic, high index, or phase transition control of total internal reflection in high efficiency variable reflectivity image displays
Lorne A. Whitehead,Dmitri Nikolaevich Grandmaison,Robin J.N. Coope,Michele Ann Mossman,Andrzej Kotlicki +4 more
TLDR
In this paper, charged particles suspended in a medium such as FluorinertTM Electronic Liquid are used to electrophoretically control total internal reflection (TIR) at a retro-reflective surface formed on a high refractive index material.Abstract:
Charged particles (21) suspended in a medium (20) such as FluorinertTM Electronic Liquid are used to electrophoretically control total internal reflection (TIR) at a retro-reflective surface formed on a high refractive index material. Prismatic structures (35, 32, 81) redirect ambient light from an overhead light source toward a display image and then from the image to the region in front of the image, yielding a high contrast reflective display. A transparent planar waveguide (36) front lights the display with sequential flashes of red, blue and green light to generate a full colour display. TIR can also be controlled at retro-reflective surfaces by means of a vapour-liquid phase transition, or by changing the absorption coefficient of a material using electrical, chemical and/or electrochemical methods.read more
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Patent
Microencapsulated electrophoretic electrostatically-addressed media for drawing device applications
TL;DR: In this paper, a display includes an encapsulated display media, a rear electrode, and a movable electrode, each capsule comprising a plurality of particles dispersed in a fluid, and the rear electrode is disposed adjacent the second surface of the display media.
Patent
Full color reflective display with multichromatic sub-pixels
Paul Drzaic,Russell J. Wilcox +1 more
TL;DR: In this article, a full color, reflective display having superior saturation and brightness is achieved with a novel display element comprising multichromatic elements, where a capsule includes more than three species of particles which differ visually.
Patent
High dynamic range display devices
TL;DR: In this paper, a display has a first array of pixels connected to emit individually-controlled amounts of light onto a second array of RGB pixels, and the second array is connected to pass individually-controllable portions of the light.
Patent
Electrophoretic particles and processes for the production thereof
Anthony Edward Pullen,Thomas H. Whitesides,Charles Howie Honeyman,Barrett Comiskey,Jonathan D. Albert +4 more
TL;DR: Copper chromite particles can advantageously be used as black particles in electrophoretic media and displays as discussed by the authors, and they are coated with a silica coating and a polymer coating.
Patent
Electrophoretic medium and process for the production thereof
Richard J. Paolini,David D. Miller,Barrett Comiskey,Joseph M. Jacobson,Bin Wu,Charles Howie Honeyman,Jian Lin +6 more
TL;DR: In this paper, a two-phase electrophoretic medium comprises a continuous phase and a discontinuous phase, each of which comprises a suspending fluid and at least one particle disposed within the suspending fluid.
References
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Patent
Backlighting apparatus employing an array of microprisms
TL;DR: In this article, an improved backlighting apparatus comprising a slab waveguide (6) that accepts light rays generated by a light source (4) and transmits the light rays via total internal reflection is presented.
Patent
Apparatus for switching optical signals and method of operation
TL;DR: In this paper, a decollimator was used to focus an input optical signal to one of a plurality of output optical fibers (214 and 216) at an angle with respect to a reference.
Patent
Electrophoretic display devices
TL;DR: An electrophoretic display device comprises a cell in which a colloidal suspension of pigment particles is contained between associated electrodes and means are provided for the establishment of a potential between the electrodes for the selective transport of pigment particle as discussed by the authors.
Patent
Edge-illuminated liquid crystal display devices
TL;DR: In this article, a high contrast display is provided by illuminating a polymer dispersed liquid crystal (PDLC) display panel through opposite edges thereof, where light is scattered out the front of the panel from non-activated areas of the PDLC in which the refractive indices of the liquid crystal and polymer matrix materials are mismatched.
Patent
Liquid crystal display unit which is back-lit with colored lights
TL;DR: In this article, the authors proposed a method to compensate for the differences in light intensity at different positions on the back of a liquid crystal display unit using a plurality of light sources, each having a red, green, and blue light emitter.