US Patent No: 4,917,465

Number of patents in Portfolio can not be more than 2000

Color display system

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A preferred display system is formed by stacking three STN birefringent LCD panels that are tuned to different subtractive primary colors (i.e. yellow, cyan and magenta). Interposed between the panels, and sandwiched about the stack, are polarizers. At least some of the polarizers may be colored to enhance the birefringence color characteristics and to improve brightness. In some embodiments, the assembly is illuminated by a collimated light source and the resulting image is focused onto a projection screen for viewing. In other embodiments, optics are provided to permit direct wide angle viewing of the display without parallax effects.

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First Claim

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all claims..

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Patent Owner(s)

Patent OwnerAddressTotal Patents
IN FOCUS SYSTEMS, INC.WILSONVILLE, OR12
SEIKO EPSON CORPORATIONTOKYO19240

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Conner, Arlie R Portland, OR 103 1853
Gulick, Paul E Tualatin, OR 18 670

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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SHARP KABUSHIKI KAISHA (3)
4,411,496 DAP, LCD Device with a bias voltage 18 1980
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4,549,174 Electrode terminal assembly on a multi-layer type liquid crystal panel 45 1983
 
ABB SWITZERLAND HOLDING LTD. (2)
4,634,229 Liquid crystal display 32 1984
4,697,884 Liquid crystal display having degree of twist and thickness for improved multiplexing 42 1986
 
FUJITSU LIMITED (2)
4,832,461 Projection-type multi-color liquid crystal display device 25 1987
4,812,034 Projection type liquid crystal display device 21 1987
 
HITACHI, LTD. (2)
4,759,612 Twisted nematic type liquid crystal display device having a color polarizer to provide an achromatic or colorless background 65 1986
4,838,655 Projector using guest-host liquid crystal cells for improved color purity 45 1988
 
TEKTRONIX, INC. (2)
4,758,818 Switchable color filter and field sequential full color display system incorporating same 83 1983
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VICTOR COMPANY OF JAPAN, LTD. (2)
4,349,817 Liquid crystal display system using fiber optic faceplates 40 1980
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AKAMAI TECHNOLOGIES, INC. (1)
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 26 2009
 
BBC Brown, Boveri & Company, Limited (1)
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Beckman Instruments, Inc. (1)
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COMMISSARIAT A L'ENERGIE ATOMIQUE (1)
4,813,770 Cell with a double liquid crystal layer using the electrically controlled birefringence effect and process for producing a uniaxial medium with negative optical anisotropy usable in said cell 55 1987
 
CONSIGLIO NAZIONALE DELLE RICERCHE, AN ITALIAN CORP. (1)
4,579,422 Liquid crystal device for continuous rotation of selective polarization of monochromatic light 15 1983
 
Kabushiki Kaisha Suwa Seikosha (1)
4,241,339 Multi-colored display device 57 1978
 
Kaiser Aerospace & Electronics Corporation (1)
4,770,500 Method and apparatus for multi color display 73 1986
 
MANCHESTER R&D LIMITED PARTNERSHIP (1)
4,613,207 Liquid crystal projector and method 105 1984
 
nView Corporation (1)
4,763,993 Liquid crystal display for projection systems 56 1987
 
POLAROID CORPORATION (1)
4,416,514 Color filter 82 1980
 
SECRETARY OF STATE FOR DEFENCE, THE (1)
4,232,948 Liquid crystal display device 70 1974
 
SEIKO EPSON CORPORATION (1)
4,659,183 Backlighted liquid crystal display 39 1984
 
SEIKO PRECISION INC. (1)
4,796,978 Projection type liquid crystal displaying device 65 1987
 
SHINSJU SEIKI KABUSHIKI KAISHA (1)
4,487,481 Backlighted liquid crystal display 61 1981
 
SONY CORPORATION (1)
4,745,406 Liquid crystal display apparatus 20 1986
 
STC PLC (1)
4,720,781 Data processing terminal having support module and portable display module for liquid crystal display 47 1984
 
TEXAS INSTRUMENTS INCORPORATED (1)
4,547,043 Stacked LCD graphics display 29 1982
 
The United States of America as represented by the Secretary of the Navy (1)
4,299,447 Liquid crystal fiber optics large screen display panel 47 1979
 
Veglia (1)
4,723,840 Liquid crystal display using opaque flaps for reflection 21 1986
 
Other [Check patent profile for assignment information] (1)
4,652,101 Overhead projector 38 1985

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
3M INNOVATIVE PROPERTIES COMPANY (27)
5,882,774 Optical film 469 1995
5,828,488 Reflective polarizer display 204 1995
6,088,067 Liquid crystal display projection system using multilayer optical film polarizers 41 1995
6,025,897 Display with reflective polarizer and randomizing cavity 102 1996
5,831,375 Electroluminescent lamp using multilayer optical film 53 1997
5,825,542 Diffusely reflecting multilayer polarizers and mirrors 189 1997
6,124,971 Transflective displays with reflective polarizing transflector 98 1997
6,018,419 Diffuse reflectors 31 1998
6,096,375 Optical polarizer 76 1999
6,543,153 Reflective polarizer having improved properties and optical display with improved reflective polarizer 17 1999
6,262,842 Transflective displays with reflective polarizing transflector 114 2000
6,804,058 Electroluminescent light source and display incorporating same 13 2000
6,888,675 Transflective displays with reflective polarizing transflector 4 2001
6,613,421 Optical film 16 2001
6,671,452 Luminaire device 34 2001
6,905,220 Backlight system with multilayer optical film reflector 51 2002
7,038,745 Brightness enhancing reflective polarizer 25 2003
6,993,242 Luminaire device 27 2003
7,083,847 Optical film 4 2003
7,321,464 Electroluminescent light source and display incorporating same 8 2004
7,209,628 Luminaire device 7 2005
7,423,708 Display having a reflective polarizer 2 2005
7,418,188 Luminaire device 4 2006
7,297,393 Optical film 2 2006
7,424,197 Luminaire device 13 2006
7,587,117 Luminaire device 3 2006
7,852,560 Display incorporating reflective polarizer 2 2008
 
REAL D (16)
5,751,384 Color polarizers for polarizing an additive color spectrum along a first axis and it's compliment along a second axis 74 1995
5,822,021 Color shutter liquid crystal display system 50 1996
6,049,367 Polarization manipulating device modulator with retarder stack which preconditions light for modulation and isotropic states 25 1997
5,999,240 Optical retarder stack pair for transforming input light into polarization states having saturated color spectra 30 1997
5,990,996 Color selective light modulators employing birefringent stacks 27 1997
5,929,946 Retarder stack for preconditioning light for a modulator having modulation and isotropic states of polarization 51 1997
6,882,384 Color filters and sequencers using color selective light modulators 15 1998
6,707,516 Single-panel field-sequential color display systems 46 1998
6,252,638 Color controllable illumination device, indicator lights, transmissive windows and color filters employing retarder stacks 22 1998
6,452,646 Optical retarder stack formed of multiple retarder sheets 18 1999
6,183,091 Color imaging systems and methods 92 1999
6,417,892 Color filters, sequencers and displays using color selective light modulators 43 1999
6,273,571 Display architectures using an electronically controlled optical retarder stack 33 1999
6,899,430 Color imaging systems and methods 3 2000
6,667,784 Color filters, sequencers and displays using color selective light modulators 8 2002
7,511,787 Color filters and sequencers using color-selective light modulators 16 2004
 
KOPIN CORPORATION (10)
5,444,557 Single crystal silicon arrayed devices for projection displays 74 1992
5,751,261 Control system for display panels 43 1993
5,438,241 Single crystal silicon arrayed devices for display panels 121 1993
5,362,671 Method of fabricating single crystal silicon arrayed devices for display panels 98 1994
5,528,397 Single crystal silicon transistors for display panels 139 1994
5,666,175 Optical systems for displays 29 1994
5,661,371 Color filter system for light emitting display panels 58 1996
6,121,950 Control system for display panels 28 1998
6,511,187 Method of fabricating a matrix display system 16 1998
6,558,008 Method of fabricating a matrix display system 14 2000
 
SMARTLIGHT LTD. (8)
5,790,216 Viewing apparatus and work station 13 1996
5,760,851 Display device 3 1996
5,859,676 Self-masking viewing apparatus 2 1996
5,835,173 Transparency viewing device comprising passive matrix LCD 13 1996
6,311,419 Dedicated mammogram viewer 15 1996
5,963,276 Back projection transparency viewer with overlapping pixels 14 1997
5,890,305 Self-masking transparency viewing apparatus 3 1997
6,279,253 Self-masking transparency viewing apparatus 6 1999
 
Minnesota Mining and Manufacturing Company (7)
5,422,756 Backlighting system using a retroreflecting polarizer 237 1992
5,325,218 Cholesteric polarizer for liquid crystal display and overhead projector 146 1992
5,528,720 Tapered multilayer luminaire devices 92 1994
5,559,634 Retroreflecting polarizer 94 1994
5,594,830 Luminaire device 134 1995
6,002,829 Luminaire device 79 1997
6,335,999 Multilayer luminaire device 45 2000
 
REGENMACHER LTD. (7)
5,920,298 Display system having common electrode modulation 37 1996
6,078,303 Display system having electrode modulation to alter a state of an electro-optic layer 9 1997
6,144,353 Display system having electrode modulation to alter a state of an electro-optic layer 15 1997
6,104,367 Display system having electrode modulation to alter a state of an electro-optic layer 12 1997
6,046,716 Display system having electrode modulation to alter a state of an electro-optic layer 19 1997
6,329,971 Display system having electrode modulation to alter a state of an electro-optic layer 15 2000
6,304,239 Display system having electrode modulation to alter a state of an electro-optic layer 15 2000
 
CLIO TECHNOLOGIES, INC. (6)
5,671,994 Flat and transparent front-lighting system using microprisms 122 1994
5,506,929 Light expanding system for producing a linear or planar light beam from a point-like light source 116 1994
5,608,837 Transmissive type display and method capable of utilizing ambient light 52 1995
5,668,913 Light expanding system for producing a linear or planar light beam from a point-like light source 55 1996
5,854,872 Divergent angle rotator system and method for collimating light beams 133 1996
5,835,661 Light expanding system for producing a linear or planar light beam from a point-like light source 74 1996
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (5)
5,179,459 Methods for adhering multiple stack liquid crystal display panels 32 1991
5,187,644 Compact portable computer having an expandable full size keyboard with extendable supports 73 1991
5,796,575 Portable computer with hinged cover having a window 50 1992
6,184,943 Portable computer system incorporating a rear projection display 11 1998
6,791,628 Portable computer system incorporating a rear projection display 6 2000
 
SHARP KABUSHIKI KAISHA (5)
5,329,388 Liquid crystal display employing light guide plate between cells 20 1992
5,615,024 Color display device with chirped diffraction gratings 32 1993
5,642,214 Optical modulating element and electronic apparatus using it 209 1994
5,559,617 Liquid crystal display device with overlapping compensators with portions having different retardation values 25 1994
5,691,791 Reflective liquid crystal display device and reflector 73 1996
 
BRITEVIEW TECHNOLOGIES, INC. (4)
5,390,276 Backlighting assembly utilizing microprisms and especially suitable for use with a liquid crystal display 108 1992
5,371,618 Color liquid crystal display employing dual cells driven with an EXCLUSIVE OR relationship 172 1993
5,359,691 Backlighting system with a multi-reflection light injection system and using microprisms 139 1993
5,926,601 Stacked backlighting system using microprisms 78 1996
 
REVEO, INC. (4)
5,828,427 Computer-based image display systems having direct and projection modes of viewing 54 1994
5,801,793 Backlighting construction for use in computer-based display systems having direct and projection viewing modes of operation 30 1994
6,104,447 Electro-optical backlighting panel for use in computer-based display systems and portable light projection device for use therewith 15 1998
7,110,052 Backlighting construction for use in computer-based display systems having direct and projection viewing modes of operation 5 1998
 
SEIKO EPSON CORPORATION (4)
5,124,818 LCD system having improved contrast ratio 73 1990
5,608,551 Display panel assembly with microlens structure 37 1995
6,612,702 Projection display device 2 1999
6,637,886 Projection display device 2 2003
 
THOMSON LICENSING (4)
5,315,418 Two path liquid crystal light valve color display with light coupling lens array disposed along the red-green light path 151 1992
5,642,125 Two path liquid crystal light valve color display 30 1994
5,504,597 Full color display with gradient index lens array disposed between phosphor emitters and liquid crystal display 31 1995
5,959,711 Enhanced off-axis viewing performance of liquid crystal display employing a fiberoptic faceplate having an opaquely masked front surface on the front face 14 1996
 
BACETILOS APPLICATIONS LLC (2)
5,497,254 Optical apparatus including a liquid crystal modulator 33 1994
5,682,214 Optical apparatus for controlling the wavefront of a coherent light 59 1995
 
CASIO COMPUTER CO., LTD. (2)
5,585,950 STN LCD device displaying multiple colors in response to different voltages which includes a retardation plate 37 1994
6,115,014 Liquid crystal display by means of time-division color mixing and voltage driving methods using birefringence 28 1995
 
CREE, INC. (2)
5,359,345 Shuttered and cycled light emitting diode display and method of producing the same 220 1992
5,724,062 High resolution, high brightness light emitting diode display and method and producing the same 196 1994
 
HITACHI, LTD. (2)
5,455,694 Liquid crystal display with pixel shape same as image of light source through microlens 13 1992
5,684,548 Liquid crystal display element and micro-lens arrangement and a display using the same 11 1995
 
IN FOCUS SYSTEMS, INC. (2)
5,337,103 Case for overhead projection display panel 20 1993
5,353,075 Convertible flat panel display system 48 1993
 
LIGHT VALVE SOLUTIONS, LLC (2)
5,467,154 Projection monitor 77 1993
5,692,820 Projection monitor 43 1995
 
RELIANT TECHNOLOGIES, INC. (2)
5,184,156 Glasses with color-switchable, multi-layered lenses 107 1991
5,432,624 Optical display unit in which light passes a first cell, reflects, then passes a second cell 6 1993
 
SUMITOMO CHEMICAL COMPANY, LIMITED (2)
6,522,468 Light-polarizing film 0 1999
6,583,929 Light-polarizing film 2 2002
 
UNITED CALIFORNIA BANK (FORMERLY KNOWN AS SNAWA BANK CALIFORNIA) (2)
5,838,403 Liquid crystal display system with internally reflecting waveguide for backlighting and non-Lambertian diffusing 96 1996
6,072,551 Backlight apparatus for illuminating a display with controlled light output characteristics 32 1997
 
UNIVERSITY TECHNOLOGY CORPORATION (2)
5,953,083 Retarder stacks for polarizing a first color spectrum along a first axis and a second color spectrum along a second axis 37 1997
6,310,673 Transmissive optical polarizing filters designed to maximize a desired portion of a spectral output 18 1999
 
XEROX CORPORATION (2)
5,220,442 Method of making color liquid crystal display with dead front appearance 6 1991
5,307,188 Color liquid crystal display with dead front appearance having opaque mask formed on the primary display 8 1993
 
Advanced Simulation Displays Co. (1)
7,414,595 Virtual mosaic wide field of view display system 14 2003
 
APPLE INC. (1)
7,821,474 Rendering luminance levels of a high dynamic range display 0 2006
 
BROWN UNIVERSITY (1)
5,682,180 Multi-color electronic display utilizing opponent colors 8 1990
 
CANON KABUSHIKI KAISHA (1)
5,237,435 Multicolor projector employing diffraction grating type liquid crystal light modulators 107 1991
 
COUNTERPOINT MASTER LLC (1)
5,467,207 LCD projection system which aligns the larger beam spread angle of the light source with the larger acceptance angle of the light valve and a nonimaging reflector for an illumination system 8 1994
 
GUARDIAN INDUSTRIES CORP. (1)
5,737,045 LCD with notch filter 10 1995
 
HANNSTAR DISPLAY CORP. (1)
7,486,354 Backlight module of a liquid crystal display, display device, method of improving color gamut of a display device 1 2006
 
HITACHI MAXELL, LTD. (1)
RE38175 Liquid crystal display element and micro-lens arrangement and a display using the same 1 1999
 
Honeywell Inc. (1)
5,032,007 Apparatus and method for an electronically controlled color filter for use in information display applications 121 1988
 
INTEL CORPORATION (1)
6,417,863 Color balancing a multicolor display 5 2000
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,799,231 Variable index distributed mirror 48 1996
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
5,719,650 High-fidelity spatial light modulator 29 1995
 
NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY (1)
8,073,303 Light-concentrating panel 2 2009
 
nView Corporation (1)
5,153,621 Optical system for projecting multiple images in adjoining relation without illuminance discontinuities 24 1991
 
PALOMAR TECHNOLOGIES CORPORATION (1)
5,594,561 Flat panel display with elliptical diffuser and fiber optic plate 62 1993
 
PETER VOGEL;GE HEALTHCARE (1)
5,946,431 Multi-functional photometer with movable linkage for routing light-transmitting paths using reflective surfaces 3 1997
 
PROXIMA CORPORATION (1)
5,299,039 Stacked display panel construction and method of aligning pixel elements thereof 33 1991
 
QUANTA DISPLAY JAPAN INC. (1)
7,379,132 Liquid crystal display and method for determining the contrast of a color layer and polarizer plate 0 2005
 
RAYTHEON COMPANY (1)
5,574,580 LCD with integral light confinement having a pair of afocal lenslets positioned between liquid crystal cells and color polarizers 50 1995
 
SAMSUNG DISPLAY CO., LTD. (1)
7,553,050 Optical sheet, backlight assembly and display device having the same 2 2007
 
Sayett Group, Inc. (1)
5,122,887 Color display utilizing twisted nematic LCDs and selective polarizers 70 1991
 
STORK, MICHAEL (1)
7,517,118 Cable organizer 1 2006
 
Other [Check patent profile for assignment information] (2)
5,835,166 Chiral nematic liquid crystal polarization modulated color display for stereoscopic viewing device 79 1996
6,204,899 High efficiency, color coding light pipe methods for display applications, utilizing chiral liquid crystal materials 20 1998