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)
 

Importance

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Abstract

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, CT17085

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
MacKinlay, Jock D Palo Alto, CA 43 1736
Stone, Maureen C Los Altos, CA 16 1021

Cited Art

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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
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6,312,304 Assembly of microencapsulated electronic displays 275 1999
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6,377,387 Methods for producing droplets for use in capsule-based electrophoretic displays 193 2000
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6,498,114 Method for forming a patterned semiconductor film 196 2000
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7,071,913 Retroreflective electrophoretic displays and materials for making the same 57 2001
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7,109,968 Non-spherical cavity electrophoretic displays and methods and materials for making the same 53 2002
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7,365,394 Process for fabricating thin film transistors 45 2004
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7,230,750 Electrophoretic media and processes for the production thereof 54 2004
8,139,050 Addressing schemes for electronic displays 2 2005
7,382,363 Microencapsulated electrophoretic display with integrated driver 53 2005
7,247,379 Electrophoretic particles, and processes for the production thereof 53 2005
8,115,729 Electrophoretic display element with filler particles 2 2006
7,391,555 Non-spherical cavity electrophoretic displays and materials for making the same 48 2006
7,535,624 Electro-optic display and materials for use therein 28 2006
8,035,886 Electronically addressable microencapsulated ink and display thereof 3 2006
7,859,637 Use of a storage capacitor to enhance the performance of an active matrix driven electronic display 9 2006
7,672,040 Electro-optic displays, and materials for use therein 15 2007
7,583,251 Dielectrophoretic displays 23 2007
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8,089,453 Stylus-based addressing structures for displays 4 2007
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8,384,658 Electrostatically addressable electrophoretic display 0 2008
7,746,544 Electro-osmotic displays and materials for making the same 11 2008
7,791,789 Multi-color electrophoretic displays and materials for making the same 10 2008
7,843,626 Electro-optic display and materials for use therein 10 2009
8,305,341 Dielectrophoretic displays 0 2009
8,040,594 Multi-color electrophoretic displays 2 2010
8,213,076 Multi-color electrophoretic displays and materials for making the same 0 2010
 
XEROX CORPORATION (26)
5,892,497 Additive color transmissive twisting ball display 39 1995
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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
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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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6,440,252 Method for rotatable element assembly 9 1999
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6,504,525 Rotating element sheet material with microstructured substrate and method of use 9 2000
6,847,347 Electromagnetophoretic display system and method 6 2000
6,970,154 Fringe-field filter for addressable displays 4 2001
6,897,848 Rotating element sheet material and stylus with gradient field addressing 12 2001
6,690,350 Rotating element sheet material with dual vector field addressing 5 2001
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QUALCOMM MEMS TECHNOLOGIES, INC. (21)
7,710,632 Display device having an array of spatial light modulators with integrated color filters 22 2005
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8,031,133 Method and device for manipulating color in a display 3 2005
7,525,730 Method and device for generating white in an interferometric modulator display 15 2005
8,102,407 Method and device for manipulating color in a display 8 2005
7,911,428 Method and device for manipulating color in a display 14 2005
7,728,800 Method and device for manipulating color in a display 0 2005
7,483,197 Photonic MEMS and structures 16 2006
7,532,377 Movable micro-electromechanical device 28 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 30 2006
7,511,875 Moveable micro-electromechanical device 3 2006
7,872,792 Method and device for modulating light with multiple electrodes 4 2007
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7,791,787 Moveable micro-electromechanical device 0 2009
7,830,588 Method of making a light modulating display device and associated transistor circuitry and structures thereof 11 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 5 2001
6,700,695 Microstructured segmented electrode film for electronic displays 9 2001
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CBRITE INC. (2)
7,929,198 Electro-optic display 1 2007
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COSPHERIC LLC (2)
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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] (2)
6,326,945 Magnetic writing board 6 1999
8,441,714 Multi-color electrophoretic displays 0 2011