Display board illuminating device for passive displays

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5070431
SERIAL NO

07559358

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A display board illuminating device includes a light guide plate arranged to face the back of a display board and a light source disposed to face the side end of the light guide plate. The side end of the light guide plate is inclined toward the center of the light guide plate in the direction of the display board. By this configuration an angle of an optical axis refracted at the surface of the side end and incident into the light guide plate with respect to a main surface of the light guide plate, so that the whole area of the display board is illuminated efficiently.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Pioneer Electronic CorporationTOKYO574

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kayama, Tsutomu Kawagoe, JP 2 133
Kitazawa, Hideki Kawagoe, JP 1 124
Nagai, Yoshiaki Kawagoe, JP 7 321
Takeuchi, Shogo Kawagoe, JP 3 155
Tanimoto, Kohichi Kawagoe, JP 1 124
Terada, Ryohei Kawagoe, JP 2 124
Utsugi, Nobuo Kawagoe, JP 5 218

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Minnesota Mining and Manufacturing Company (1)
* 4874228 Back-lit display 104 1989
 
JENSEN, JENS M. (1)
* 4890201 Light transmitting plate member 44 1988
 
SFENA Corporation (1)
* 4903171 Panel lighting 6 1989
 
FIRST INTERSTATE COMMERCIAL CORPORATION A CA CORP (1)
* 4453220 Apparatus and methods for recording antimicrobic susceptibility data and biotype data 8 1981
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 4933814 Planar luminescent device 112 1989
 
MOTOROLA, INC. (2)
* 4630895 LCD lightguide 113 1985
* 4929062 Light guide for LCD 43 1988
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Minnesota Mining and Manufacturing Company (1)
* 5608550 Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector 157 1996
 
Other [Check patent profile for assignment information] (9)
* 6288700 Light emitting flat panel device which uses light guide routes to directly send light into a matrix of electronic shutters 30 1995
* 6928775 Multi-use electric tile modules 43 2002
* 2004/0031,219 Multi-use electric tile modules 9 2002
6834987 Illuminated medallion for transmission shifter knobs 8 2002
* 2005/0279,400 Electric tile modules 12 2005
7681363 Electric tile modules 12 2006
7854095 Electric tile modules 9 2009
* 2009/0266,405 ELECTRIC TILE MODULES 0 2009
* 2012/0074,873 PLANE-LIKE LIGHTING UNITS AND DISPLAY EQUIPMENT PROVIDED THEREWITH 1 2011
 
SONY CORPORATION (1)
* 6089739 Surface light source device 17 1998
 
SOLID STATE OPTO LIMITED (6)
* 2003/0123,246 Light emitting panel assemblies 54 2002
* 2005/0111,238 Light emitting panel assemblies 48 2004
* 2005/0094,418 Light emitting panel assemblies 48 2004
* 2006/0028,844 Light emitting panel assemblies 54 2005
* 2006/0028,841 Light emitting panel assemblies 49 2005
* 2007/0103,933 LIGHT EMITTING PANEL ASSEMBLIES 1 2006
 
SAMSUNG ELECTRONICS CO., LTD. (2)
6496237 Light source utilizing diffusive reflective cavity having two oppositely inclined surfaces 20 1999
6313892 Light source utilizing reflective cavity having sloped side surfaces 109 2001
 
PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD. (6)
* 6883950 Plane-like lighting units and display equipment provided therewith 13 2004
* 2004/0174,717 Plane-like lighting units and display equipmet provided therewith 0 2004
7784986 Plane-like lighting units and display equipment provided therewith 5 2005
* 2005/0180,124 Plane-like lighting units and display equipment provided therewith 10 2005
8070344 Plane-like lighting units and display equipment provided therewith 10 2010
8177407 Plane-like lighting units and display equipment provided therewith 0 2011
 
AU OPTRONICS CORPORATION (3)
* 7121692 Backlight module 4 2003
* 2005/0002,205 BACKLIGHT MODULE 1 2003
* 2005/0157,521 Backlight assembly for liquid crystal display 5 2004
 
RANCO INCORPORATED OF DELAWARE (1)
* 5803357 Thermostat with remote temperature sensors and incorporating a measured temperature feature for averaging ambient temperatures at selected sensors 146 1997
 
M-I HOLDINGS L.L.C. (1)
6574652 Intrinsically safe communication and control system for use in hazardous locations including monotoring device with intrinsically safe fluorescent tube backlit 13 1998
 
MOTOROLA SOLUTIONS, INC. (2)
6285425 Ridged reflector for an optical display having a curved and a planar facet for each ridge 19 1998
6285426 Ridged reflector having optically transmissive properties for an optical display device 38 1998
 
DELAWARE DISPLAY GROUP LLC (4)
7195389 Light emitting panel assemblies 15 2003
* 2004/0012,946 Light emitting panel assemblies 25 2003
7434973 Light emitting panel assemblies 10 2007
* 2007/0147,087 LIGHT EMITTING PANEL ASSEMBLIES 22 2007
 
ESTRAKON, INC. (2)
* 7246932 Data display device 19 2002
* 2004/0114,344 Data display device 2 2004
 
CHEERINE DEVELOPMENT (HONG KONG) LTD. (4)
* 5969479 Light flashing system 49 1998
7067986 Frequency controlled lighting system 5 2003
7057354 Frequency controlled lighting system 3 2004
7207688 Interactive shoe light device 11 2005
 
COPAL COMPANY LIMITED (1)
* 5775791 Surface emission apparatus 95 1995
 
SEOUL SEMICONDUCTOR CO., LTD. (2)
6473554 Lighting apparatus having low profile 170 1997
6647199 Lighting apparatus having low profile 79 1999
 
LG DISPLAY CO., LTD. (2)
* 7221353 Liquid crystal display device and method for operating the same 1 2002
* 2003/0122,755 LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR OPERATING THE SAME 0 2002
 
GOOGLE TECHNOLOGY HOLDINGS LLC (1)
* 6166787 Optical display device having prismatic film for enhanced viewing 48 1998
 
INNOLUX CORPORATION (6)
* 5655832 Multiple wavelength light processor 167 1995
* 5806955 TIR lens for waveguide injection 144 1995
* 6043591 Light source utilizing diffusive reflective cavity 101 1997
* 5892325 Backlighting apparatus for uniformly illuminating a display panel 93 1997
* 6134092 Illumination device for non-emissive displays 41 1998
* 2014/0355,307 DISPLAY APPARATUS 1 2014
 
CANON KABUSHIKI KAISHA (7)
* 5499112 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 59 1994
6512600 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 49 1997
* 5905583 Light guide illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 34 1997
6426807 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 23 2000
7593139 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 2 2006
* 2006/0119,899 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 3 2006
* 2009/0284,810 LIGHT GUIDE, ILLUMINATING DEVICE HAVING THE LIGHT GUIDE, AND IMAGE READING DEVICE AND INFORMATION PROCESSING APPARATUS HAVING THE ILLUMINATING DEVICE 2 2009
 
Kraco Enterprises, LLC (1)
* 5537300 Control panel 51 1995
 
SHARP KABUSHIKI KAISHA (2)
* 5418384 Light-source device including a linear array of LEDs 91 1993
* 9804320 Illumination device with edge-lit light guide with opposed light sources 0 2013
 
KRACO ENTERPRISES, INC. (1)
* 5727866 Control panel 83 1996
 
NIKON CORPORATION (1)
* 2001/0033,480 LCD illuminating device 3 2001
 
HON HAI PRECISION INDUSTRY CO., LTD. (3)
* 7121708 Illuminated logo unit with light guide plate 1 2004
* 2005/0007,751 Illuminated logo unit with light guide plate 0 2004
* 9651732 Light source module 0 2015
 
YOUNG LIGHTING TECHNOLOGY INC. (2)
* 8702295 Flat light source module 1 2011
* 2012/0106,198 FLAT LIGHT SOURCE MODULE 3 2011
 
DELL USA, L.P. (1)
* 5477239 Front lighting system for liquid crystal display 29 1993
 
TELEDYNE INDUSTRIES, INC. (1)
* 6007209 Light source for backlighting 187 1997
 
SAMSUNG DISPLAY CO., LTD. (2)
* 5988827 Display devices having rounded corner backlight unit 36 1997
RE44227 Display devices having rounded corner backlight unit 0 2001
 
RAMBUS INTERNATIONAL LTD. (7)
* 2009/0257,244 LIGHT EMITTING PANEL ASSEMBLIES 2 2009
8317368 Light redirecting films including intersecting optical elements with flat and curved surfaces 0 2010
* 8142063 Light emitting panel assemblies 1 2010
8123393 Light emitting panel assemblies 1 2011
8322905 Edgelit panel with curvilinear light extracting deformities 3 2011
8308334 Light emitting panel assemblies 0 2011
8215816 Light emitting panel assemblies 2 2011
 
SUMITOMO ELECTRIC INDUSTRIES, LTD. (1)
* 2011/0211,368 LIGHT GUIDE PLATE, WIRING MODULE AND ELECTRONIC APPLIANCE 3 2009
 
HONEYWELL INTERNATIONAL INC. (2)
7278766 LED based light guide for dual mode aircraft formation lighting 4 2003
* 2004/0196,646 LED based light guide for dual mode aircraft formation lighting 11 2003
 
HONEYWELL INC. (1)
* 5381309 Backlit display with enhanced viewing properties 119 1993
 
MOTOROLA, INC. (1)
* 5390085 Light diffuser for a liquid crystal display 99 1993
 
MIYAKAWA CORPORATION (3)
* 5485291 Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source 138 1994
* 5400224 Lighting panel 41 1994
* 5664862 Edge light for panel display 116 1996
 
INOUE DENKI CO., INC. (1)
* 5677702 Display unit incorporating light guiding plate 15 1994
 
ENPLAS CORPORATION (2)
* 5584556 Surface light source device 138 1992
* 5718497 Surface light source device 62 1995
 
CHUGAI SEIYAKU KABUSHIKI KAISHA (2)
7057778 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 2 2002
* 2003/0076,551 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device 87 2002
 
INNOVATIVE DISPLAY TECHNOLOGIES LLC (55)
* 5613751 Light emitting panel assemblies 226 1995
* 5895115 Light emitting panel assemblies for use in automotive applications and the like 118 1996
* 6079838 Light emitting panel assemblies 155 1997
* 5921652 Light emitting panel assemblies 156 1997
* 5876107 Light emitting panel assemblies 138 1997
6712481 Light emitting panel assemblies 125 1999
* 2002/0141,174 LIGHT EMITTING PANEL ASSEMBLIES 27 1999
6755547 Light emitting panel assemblies 72 2002
* 2003/0007,344 Light emitting panel assemblies 21 2002
6886956 Light emitting panel assemblies for use in automotive applications and the like 59 2002
* 2003/0095,398 Light emitting panel assemblies for use in automotive applications and the like 18 2002
7226196 Light emitting panel assemblies 14 2002
6749312 Light emitting panel assemblies 60 2002
* 2003/0123,247 Light emitting panel assemblies 18 2002
* 2003/0123,245 Light emitting panel assemblies 43 2002
7004611 Light emitting panel assemblies 65 2003
* 2004/0080,927 Light emitting panel assemblies 22 2003
* 6796668 Light emitting panel assemblies for use in automotive applications and the like 52 2003
* 2004/0095,739 Light emitting panel assemblies for use in automotive applications and the like 18 2003
7160015 Light emitting panel assemblies 27 2004
* 2004/0165,372 Light emitting panel assemblies 25 2004
7322730 Light emitting panel assemblies 6 2004
* 2005/0007,759 Light emitting panel assemblies 31 2004
7364341 Light redirecting films including non-interlockable optical elements 25 2004
* 2005/0122,591 Light redirecting films and film systems 35 2004
7178965 Light emitting panel assemblies having LEDs of multiple colors 15 2004
* 2005/0111,241 Light emitting panel assemblies 26 2004
7374305 Light emitting panel assemblies 12 2005
7357553 Light emitting panel assemblies 7 2005
7165873 Light emitting panel assemblies 12 2005
7736043 Light emitting panel assemblies 7 2005
7384177 Light emitting panel assemblies 14 2005
7300194 Light emitting panel assemblies 6 2005
* 2006/0028,840 Light emitting panel assemblies 48 2005
* 2006/0028,843 Light emitting panel assemblies 26 2005
* 2006/0028,817 Light emitting panel assemblies 35 2005
7367705 Long curved wedges in an optical film 11 2005
7434974 Light emitting panel assemblies 13 2006
7404660 Light emitting panel assemblies 25 2006
7448775 Transreflectors, transreflector systems and displays and methods of making transreflectors 8 2006
7703967 Light emitting panel assemblies 18 2006
7467887 Light emitting panel assemblies 14 2006
* 2006/0274,554 Light emitting panel assemblies 2 2006
* 2006/0274,555 Light emitting panel assemblies 2 2006
7537370 Light emitting panel assemblies 5 2006
* 2007/0153,549 LIGHT EMITTING PANEL ASSEMBLIES 9 2006
7404661 Light emitting panel assemblies 5 2007
* 2007/0133,224 LIGHT EMITTING PANEL ASSEMBLIES 5 2007
7712932 Light redirecting films having optical elements with curved surfaces 11 2008
* 2008/0138,024 LIGHT REDIRECTING FILMS AND FILM SYSTEMS 3 2008
7563012 Light emitting panel assemblies 8 2008
7798695 Light emitting panel assemblies 17 2008
* 7806539 Transreflectors, transreflector systems and displays and methods of making transreflectors 2 2009
* 2009/0161,385 TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS 29 2009
7963687 Light emitting panel assemblies 5 2010
 
RAMBUS DELAWARE LLC (12)
* 5975711 Integrated display panel assemblies 146 1997
* 7108414 Light emitting panel assemblies 33 2003
7354184 Light emitting panel assemblies 11 2005
7524101 Light emitting panel assemblies 9 2008
7513672 Light emitting panel assemblies 19 2008
7780329 Light emitting panel assemblies 18 2009
8462292 Optically transmissive substrates and light emitting assemblies and methods of making same, and methods of displaying images using the optically transmissive substrates and light emitting assemblies 2 2009
8398274 Light redirecting films including intersecting optical elements with flat and curved surfaces 1 2010
* 8104944 Light emitting panel assemblies 1 2010
8459858 Light emitting panel assemblies 0 2011
8770814 Light emitting panel assemblies 1 2013
9625633 Light emitting panel assemblies 0 2014
 
ILLINOIS TOOL WORKS INC. (1)
* 5951152 Light source housing apparatus and method of manufacture 9 1997
 
Primetech Electronics, Inc. (1)
6238076 Compact light mixing and diffusing apparatus 36 1999
 
MITSUBISHI DENKI KABUSHIKI KAISHA (2)
* 7690831 Surface light source device 7 2005
* 2006/0007,704 Surface light source device 7 2005
 
ROHM CO., LTD. (3)
* 6259082 Image reading apparatus 56 1998
* 7419274 Optical conduction unit and image reader using the same 1 2003
* 2006/0050,390 Optical conduction unit and image reader using the same 3 2003
 
TALL TOWER LED, LLC (1)
* 5590945 Illuminated line of light using point light source 111 1995
 
NIKE, INC. (4)
* 7857504 Crystal display shielded by one or more protective guards 0 2008
* 2009/0185,304 Crystal Display Shielded by One or More Protective Guards 1 2008
8087820 Crystal display shielded by one or more protective guards 0 2010
* 2011/0058,457 Crystal Display Shielded By One Or More Protective Guards 0 2010
 
NGK INSULATORS, LTD. (1)
* 6108479 Optical waveguide plate for display 8 1998
 
BAKER ELECTRONICS, INC. (1)
* 6132053 Optimized highly efficient large area modular flat panel display lighting device 12 1998
* Cited By Examiner