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WO2005090855A1 - Light guide plate - Google Patents

Light guide plate

Info

Publication number
WO2005090855A1
WO2005090855A1 PCT/JP2004/019534 JP2004019534W WO2005090855A1 WO 2005090855 A1 WO2005090855 A1 WO 2005090855A1 JP 2004019534 W JP2004019534 W JP 2004019534W WO 2005090855 A1 WO2005090855 A1 WO 2005090855A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
light
face
portions
plate
transmitting
Prior art date
Application number
PCT/JP2004/019534
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuhisa Saito
Kenichi Yoshikawa
Original Assignee
System-Lab For K.G.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/00362-D arrangement of prisms, protrusions, indentations or roughened surfaces

Abstract

A light guide plate capable of efficiently reflecting the light introduced from an end face toward the front face is characterized by comprising a light-transmitting plate (10) having light-transmitting properties, a plurality of recessed portions (3) formed in the back face (9) of the light-transmitting plate (10), and peripheral projected portions (4) formed around respective recessed portions (3) so as to protrude from the back face (9). By having such a structure wherein the recessed portions (3) are surrounded by the peripheral projected portions (4) protruding from the back face (9), light incident on the peripheral projected portions (4) is reflected toward the in-plane direction and the front face of the light-transmitting plate, so that the light introduced from the end face can be efficiently reflected toward the front face.
PCT/JP2004/019534 2004-03-22 2004-12-27 Light guide plate WO2005090855A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2004082231 2004-03-22
JP2004-082231 2004-03-22
JP2004250981 2004-08-30
JP2004-250981 2004-08-30
JP2004-250967 2004-08-30
JP2004250967 2004-08-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006511128A JP4524282B2 (en) 2004-03-22 2004-12-27 Light guide plate body

Publications (1)

Publication Number Publication Date
WO2005090855A1 true true WO2005090855A1 (en) 2005-09-29

Family

ID=34993786

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/019534 WO2005090855A1 (en) 2004-03-22 2004-12-27 Light guide plate

Country Status (2)

Country Link
JP (1) JP4524282B2 (en)
WO (1) WO2005090855A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007115567A (en) * 2005-10-21 2007-05-10 Takehisa Saito Irradiation fixture
DE202006017445U1 (en) * 2006-11-14 2007-08-02 Demmel Ag Light module for rear-illuminated lettering, comprises light-conducting plate with two surfaces facing each other, connecting lateral surface and source of light, light or air chambers form recesses in region of spaced adhesive frames
JP2011023331A (en) * 2009-07-16 2011-02-03 Lg Display Co Ltd Backlight unit
WO2011093172A1 (en) * 2010-01-29 2011-08-04 日本ゼオン株式会社 Light-guiding plate and lighting device
EP2426394A1 (en) * 2009-04-27 2012-03-07 S.K.G. Co., Ltd. Method for manufacturing a light guide plate
JP5634611B1 (en) * 2012-12-21 2014-12-03 株式会社エス・ケー・ジー The method for manufacturing a light guide member and the guide member
CN104748071A (en) * 2013-12-31 2015-07-01 奇美实业股份有限公司 Light guide plate for illumination and illuminating lamp
JP2015130321A (en) * 2013-05-08 2015-07-16 奇美實業股▲分▼有限公司 Light guide plate for illumination, and luminaire with the same
US9557472B2 (en) 2012-12-21 2017-01-31 S.K.G. Co., Ltd. Light guide member and method of manufacturing light guide member

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06314069A (en) * 1993-03-03 1994-11-08 Fujitsu Ltd Illuminating device
JPH0743710A (en) * 1993-07-29 1995-02-14 Toshiba Lighting & Technol Corp Illumination device and liquid crystal display device
JPH103008A (en) * 1996-06-18 1998-01-06 Daiichi Jushi Kogyo Kk Light guiding plate of liquid crystal display panel, and its production
JPH11134918A (en) * 1997-03-04 1999-05-21 Matsushita Electric Ind Co Ltd Linear lighting system
JPH11147255A (en) * 1997-11-19 1999-06-02 Matsushita Electric Ind Co Ltd Manufacture of light conduction plate with prism shape
JP2000214460A (en) * 1999-01-25 2000-08-04 Sharp Corp Back light device
JP2003043266A (en) * 2001-05-22 2003-02-13 Nichia Chem Ind Ltd Light guide plate of surface emitting device
JP2003066235A (en) * 2001-08-27 2003-03-05 Sanyo Electric Co Ltd Light transmission plate and surface light source device using the same
JP2003098356A (en) * 2001-09-20 2003-04-03 Pioneer Electronic Corp Light transmission plate
JP2004070189A (en) * 2002-08-09 2004-03-04 Hitachi Electronic Devices Co Ltd Liquid crystal display

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06314069A (en) * 1993-03-03 1994-11-08 Fujitsu Ltd Illuminating device
JPH0743710A (en) * 1993-07-29 1995-02-14 Toshiba Lighting & Technol Corp Illumination device and liquid crystal display device
JPH103008A (en) * 1996-06-18 1998-01-06 Daiichi Jushi Kogyo Kk Light guiding plate of liquid crystal display panel, and its production
JPH11134918A (en) * 1997-03-04 1999-05-21 Matsushita Electric Ind Co Ltd Linear lighting system
JPH11147255A (en) * 1997-11-19 1999-06-02 Matsushita Electric Ind Co Ltd Manufacture of light conduction plate with prism shape
JP2000214460A (en) * 1999-01-25 2000-08-04 Sharp Corp Back light device
JP2003043266A (en) * 2001-05-22 2003-02-13 Nichia Chem Ind Ltd Light guide plate of surface emitting device
JP2003066235A (en) * 2001-08-27 2003-03-05 Sanyo Electric Co Ltd Light transmission plate and surface light source device using the same
JP2003098356A (en) * 2001-09-20 2003-04-03 Pioneer Electronic Corp Light transmission plate
JP2004070189A (en) * 2002-08-09 2004-03-04 Hitachi Electronic Devices Co Ltd Liquid crystal display

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007115567A (en) * 2005-10-21 2007-05-10 Takehisa Saito Irradiation fixture
JP4551858B2 (en) * 2005-10-21 2010-09-29 雄久 斉藤 Irradiation device
DE202006017445U1 (en) * 2006-11-14 2007-08-02 Demmel Ag Light module for rear-illuminated lettering, comprises light-conducting plate with two surfaces facing each other, connecting lateral surface and source of light, light or air chambers form recesses in region of spaced adhesive frames
EP2426394A1 (en) * 2009-04-27 2012-03-07 S.K.G. Co., Ltd. Method for manufacturing a light guide plate
EP2426394A4 (en) * 2009-04-27 2014-08-20 Skg Co Ltd Method for manufacturing a light guide plate
JP2011023331A (en) * 2009-07-16 2011-02-03 Lg Display Co Ltd Backlight unit
US8684587B2 (en) 2009-07-16 2014-04-01 Lg Display Co., Ltd. Backlight unit
WO2011093172A1 (en) * 2010-01-29 2011-08-04 日本ゼオン株式会社 Light-guiding plate and lighting device
JP5634611B1 (en) * 2012-12-21 2014-12-03 株式会社エス・ケー・ジー The method for manufacturing a light guide member and the guide member
US9557472B2 (en) 2012-12-21 2017-01-31 S.K.G. Co., Ltd. Light guide member and method of manufacturing light guide member
JP2015130321A (en) * 2013-05-08 2015-07-16 奇美實業股▲分▼有限公司 Light guide plate for illumination, and luminaire with the same
CN104748071A (en) * 2013-12-31 2015-07-01 奇美实业股份有限公司 Light guide plate for illumination and illuminating lamp

Also Published As

Publication number Publication date Type
JPWO2005090855A1 (en) 2008-05-08 application
JP4524282B2 (en) 2010-08-11 grant

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