Inventor
KASHIMA KEIJI
JP71 patents
⚠️ This page may combine multiple inventors who share the name “KASHIMA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DAINIPPON PRINTING CO LTD
38 patentsUS5995288ANov 30, 1999
Optical sheet optical sheet lamination light source device, and light-transmissive type display apparatus
DAINIPPON PRINTING CO LTD129 citations99
US6504589B1Jan 7, 2003
Backlight device and liquid crystal display device
DAINIPPON PRINTING CO LTD94 citations98
US6417831B2Jul 9, 2002
Diffused light controlling optical sheet, back light device and liquid crystal display apparatus
DAINIPPON PRINTING CO LTD60 citations96
US6333817B1Dec 25, 2001
Optical lamination sheet
DAINIPPON PRINTING CO LTD27 citations96
US6147734ANov 14, 2000
Bidirectional dichroic circular polarizer and reflection/transmission type liquid-crystal display device
DAINIPPON PRINTING CO LTD48 citations96
US6147804ANov 14, 2000
Optical sheet lamination
DAINIPPON PRINTING CO LTD36 citations96
US7324180B2Jan 29, 2008
Laminated retardation optical element, process of producing the same, and liquid crystal display
DAINIPPON PRINTING CO LTD19 citations93
US7206041B2Apr 17, 2007
Liquid-crystal display
DAINIPPON PRINTING CO LTD21 citations93
US7030949B2Apr 18, 2006
Optical display including a cholesteric layer, a display device and a diffusing layer on an exit side of the cholesteric layer
DAINIPPON PRINTING CO LTD30 citations93
US6825984B2Nov 30, 2004
Optical sheet lamination
DAINIPPON PRINTING CO LTD25 citations93
US6624937B2Sep 23, 2003
Polarization splitting sheet, optical sheet laminate, planar light source apparatus, and transmission-type display apparatus
DAINIPPON PRINTING CO LTD30 citations93
US6583833B1Jun 24, 2003
Bidirectional dichroic circular polarizer and reflection/transmission type liquid-crystal display device
DAINIPPON PRINTING CO LTD28 citations93
US6559911B2May 6, 2003
Polarization light splitting film, backlight system and liquid crystal display having particular diffusion layer under optical rotation selection layer
DAINIPPON PRINTING CO LTD25 citations93
US6259496B1Jul 10, 2001
Backlight device and light transmission type display apparatus
DAINIPPON PRINTING CO LTD47 citations93
US6104455AAug 15, 2000
Back light device and liquid crystal display apparatus
DAINIPPON PRINTING CO LTD38 citations93
US7719643B2May 18, 2010
Retardation layer and liquid crystal display apparatus using the same
DAINIPPON PRINTING CO LTD14 citations84
US7508474B2Mar 24, 2009
Laminated retardation layer, its fabrication process, and liquid crystal display incorporating the same
DAINIPPON PRINTING CO LTD9 citations84
US7411645B2Aug 12, 2008
Phase difference layer laminated body and manufacturing method thereof
DAINIPPON PRINTING CO LTD12 citations84
US7079207B2Jul 18, 2006
Liquid crystal display
DAINIPPON PRINTING CO LTD14 citations84
US6700707B2Mar 2, 2004
Optical sheet lamination
DAINIPPON PRINTING CO LTD11 citations82
US6906764B2Jun 14, 2005
Reflective cholesteric filter
DAINIPPON PRINTING CO LTD20 citations77
US7859622B2Dec 28, 2010
Retardation layer and liquid crystal display apparatus using the same
DAINIPPON PRINTING CO LTD5 citations74
US7623201B2Nov 24, 2009
Liquid-crystal display
DAINIPPON PRINTING CO LTD4 citations74
US7359018B2Apr 15, 2008
Retardation optical element, process of producing the same, and liquid crystal display
DAINIPPON PRINTING CO LTD7 citations74
US7342619B2Mar 11, 2008
Polarization light splitting film, backlight system and liquid crystal display
DAINIPPON PRINTING CO LTD5 citations74
US7256847B2Aug 14, 2007
Board with cholesteric layer and display having the board
DAINIPPON PRINTING CO LTD7 citations74
US6891584B1May 10, 2005
Liquid-crystal display
DAINIPPON PRINTING CO LTD9 citations74
US6819372B2Nov 16, 2004
Back light device with diffusing sheet for a liquid crystal display apparatus
DAINIPPON PRINTING CO LTD7 citations74
US6560023B2May 6, 2003
Optical lamination sheet
DAINIPPON PRINTING CO LTD8 citations74
US9869809B2Jan 16, 2018
Backlight unit, liquid-crystal display apparatus, and stacked structure
DAINIPPON PRINTING CO LTD2 citations73
US6865834B2Mar 15, 2005
Display apparatus
DAINIPPON PRINTING CO LTD11 citations68
USRE40655EMar 10, 2009
Polarization light splitting film, backlight system and liquid crystal display having particular diffusion layer under optical rotational selection layer
DAINIPPON PRINTING CO LTD1 citations63
US7405780B2Jul 29, 2008
Liquid-crystal display
DAINIPPON PRINTING CO LTD3 citations63
US7068345B2Jun 27, 2006
Optical device
DAINIPPON PRINTING CO LTD6 citations63
US6977099B2Dec 20, 2005
Liquid crystalline transfer sheet and process of producing the same
DAINIPPON PRINTING CO LTD4 citations63
US6961106B2Nov 1, 2005
Retardation optical element having the function of reflecting ultraviolet light, and liquid crystal display comprising the same
DAINIPPON PRINTING CO LTD4 citations63
US6891585B2May 10, 2005
Circularly-polarized-light-extracting optical element having chlosteric layer with changing chiral pitch
DAINIPPON PRINTING CO LTD3 citations63
US6862073B2Mar 1, 2005
Circularly-polarized-light extracting optical element and process of producing the same
DAINIPPON PRINTING CO LTD5 citations63
TOSOH CORP
11 patentsUS5262928ANov 16, 1993
Back lighting device
TOSOH CORP146 citations99
US5442523AAug 15, 1995
Backlighting device
TOSOH CORP113 citations98
US5093765AMar 3, 1992
Back lighting device for a panel
TOSOH CORP143 citations98
US5735590AApr 7, 1998
Backlighting device with a transparent sheet having straight ridges
TOSOH CORP182 citations97
US5521797AMay 28, 1996
Backlighting device
TOSOH CORP170 citations97
US5730518AMar 24, 1998
Backlighting device
TOSOH CORP48 citations96
US5688035ANov 18, 1997
Backlighting device free of a bright line
TOSOH CORP57 citations96
US5289351AFeb 22, 1994
Backlighting device
TOSOH CORP66 citations96
US5618095AApr 8, 1997
Backlighting device
TOSOH CORP74 citations94
US5647655AJul 15, 1997
Back lighting device
TOSOH CORP21 citations93
US5392199AFeb 21, 1995
Back lighting device
TOSOH CORP44 citations93
TOSHIBA KK
1 patentShowing the top 50 of 71 patents by PatentIndex Score.