US Patent No: 5,737,115

Number of patents in Portfolio can not be more than 2000

Additive color tristate light valve twisting ball display

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A tristate light valve ball for an electrical twisting ball device composed of spheroidal balls rotatably disposed in an elastomer substrate. The ball is composed of segments arrayed substantially parallel to one another, each segment being adjacent to at least one other segment and to no more than two other segments. Adjacent segments are adjoined to one another at substantially planar interfaces. The segments include: a first, interior, nontransparent segment having a first optical modulation characteristic; a second exterior, transparent segment, adjacent to the first segment and having a second optical modulation characteristic; a third, interior, nontransparent segment having a third optical modulation characteristic; and a fourth, exterior, transparent segment adjacent to the third segment. For example, the ball can be made with a black first segment adjacent to a white third segment, surrounded on either side by clear second and fourth exterior segments. The ball has an anisotropy for providing an electrical dipole moment, the electrical dipole moment rendering the ball electrically responsive such that when the ball is rotatably disposed in a nonoscillating electric field while the electrical dipole moment of the ball is provided, the ball tends to rotate to an orientation in which the electrical dipole moment aligns with the field. Also disclosed are: a material made up of a substrate layer in which are disposed the aforementioned balls, with a colored backing joined to a rear surface of the layer; and a method for using a device incorporating the balls.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
XEROX CORPORATIONSTAMFORD, CT18074

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
MacKinlay, Jock D Palo Alto, CA 49 1961
Stone, Maureen C Los Altos, CA 18 1139

Cited Art Landscape

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KENT STATE UNIVERSITY, KENT, OH., A UNIVERSITY OF OH. (1)
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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
E INK CORPORATION (83)
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6,120,588 Electronically addressable microencapsulated ink and display thereof 382 1997
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6,120,839 Electro-osmotic displays and materials for making the same 330 1998
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6,445,489 Electrophoretic displays and systems for addressing such displays 187 1999
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6,422,687 Electronically addressable microencapsulated ink and display thereof 180 1999
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6,538,801 Electrophoretic displays using nanoparticles 218 2001
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7,382,363 Microencapsulated electrophoretic display with integrated driver 64 2005
7,247,379 Electrophoretic particles, and processes for the production thereof 61 2005
8,115,729 Electrophoretic display element with filler particles 9 2006
7,391,555 Non-spherical cavity electrophoretic displays and materials for making the same 55 2006
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7,859,637 Use of a storage capacitor to enhance the performance of an active matrix driven electronic display 10 2006
7,672,040 Electro-optic displays, and materials for use therein 17 2007
7,583,251 Dielectrophoretic displays 25 2007
7,532,388 Electrophoretic media and processes for the production thereof 29 2007
7,375,875 Electrophoretic media and processes for the production thereof 43 2007
8,089,453 Stylus-based addressing structures for displays 5 2007
7,956,841 Stylus-based addressing structures for displays 7 2007
8,384,658 Electrostatically addressable electrophoretic display 0 2008
7,746,544 Electro-osmotic displays and materials for making the same 14 2008
7,791,789 Multi-color electrophoretic displays and materials for making the same 16 2008
7,843,626 Electro-optic display and materials for use therein 11 2009
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8,040,594 Multi-color electrophoretic displays 5 2010
8,593,718 Electro-osmotic displays and materials for making the same 0 2010
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8,441,714 Multi-color electrophoretic displays 1 2011
8,593,721 Multi-color electrophoretic displays and materials for making the same 0 2012
 
XEROX CORPORATION (26)
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6,162,321 Method for making additive color electric paper without registration or alignment of individual elements 18 1998
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6,118,419 Random electrostatic discharge event indicator 14 1998
6,542,283 Gyricon displays utilizing magnetic elements and magnetic trapping 14 1998
6,262,707 Gyricon displays utilizing magnetic addressing and latching mechanism 27 1998
6,251,329 Method of making a gyricon display using magnetic latching 10 1998
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6,197,228 Method of making a gyricon display using magnetic latching 24 1998
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6,110,538 Method of making a gyricon display using magnetic latching 19 1998
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6,122,094 Additive color electric paper without registration or alignment of individual elements 18 1999
6,440,252 Method for rotatable element assembly 10 1999
6,545,671 Rotating element sheet material with reversible highlighting 12 2000
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6,504,525 Rotating element sheet material with microstructured substrate and method of use 11 2000
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6,690,350 Rotating element sheet material with dual vector field addressing 5 2001
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QUALCOMM MEMS TECHNOLOGIES, INC. (21)
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8,031,133 Method and device for manipulating color in a display 4 2005
7,525,730 Method and device for generating white in an interferometric modulator display 16 2005
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7,728,800 Method and device for manipulating color in a display 0 2005
7,483,197 Photonic MEMS and structures 17 2006
7,532,377 Movable micro-electromechanical device 32 2006
8,004,743 Method and apparatus for providing brightness control in an interferometric modulator (IMOD) display 1 2006
7,773,289 Method and apparatus for providing brightness control in an interferometric modulator (IMOD) display 0 2006
7,554,711 MEMS devices with stiction bumps 37 2006
7,511,875 Moveable micro-electromechanical device 4 2006
7,872,792 Method and device for modulating light with multiple electrodes 7 2007
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7,808,694 Method and device for modulating light 11 2007
8,105,496 Method of fabricating MEMS devices (such as IMod) comprising using a gas phase etchant to remove a layer 1 2008
7,791,787 Moveable micro-electromechanical device 1 2009
7,830,588 Method of making a light modulating display device and associated transistor circuitry and structures thereof 17 2009
8,098,431 Method and device for generating white in an interferometric modulator display 0 2009
 
3M INNOVATIVE PROPERTIES COMPANY (5)
7,057,599 Microstructures with assisting optical lenses 6 2001
6,700,695 Microstructured segmented electrode film for electronic displays 9 2001
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COSPHERIC LLC (3)
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8,068,271 Rotating element transmissive displays 3 2009
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CBRITE INC. (2)
7,929,198 Electro-optic display 2 2007
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UNIVERSITY OF ROCHESTER (2)
7,042,617 Optical devices having flakes suspended in a host fluid to provide a flake/fluid system providing flakes with angularly dependent optical properties in response to an alternating current electric field due to the dielectric properties of the system 6 2003
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CABOT CORPORATION (1)
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INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
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REVEO, INC. (1)
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SAMSUNG ELECTRONICS CO., LTD. (1)
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Other [Check patent profile for assignment information] (1)
6,326,945 Magnetic writing board 7 1999