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TW200730886A - Light diffusing sheet and light diffusing plate, and backlight unit and liquid crystal display device employing the same - Google Patents

Light diffusing sheet and light diffusing plate, and backlight unit and liquid crystal display device employing the same

Info

Publication number
TW200730886A
TW200730886A TW095147639A TW95147639A TW200730886A TW 200730886 A TW200730886 A TW 200730886A TW 095147639 A TW095147639 A TW 095147639A TW 95147639 A TW95147639 A TW 95147639A TW 200730886 A TW200730886 A TW 200730886A
Authority
TW
Taiwan
Prior art keywords
light diffusing
light
fine particles
type
transparent resin
Prior art date
Application number
TW095147639A
Other languages
Chinese (zh)
Inventor
Hirata Kazuhisa
Original Assignee
Nippon Catalytic Chem Ind
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
Application filed by Nippon Catalytic Chem Ind filed Critical Nippon Catalytic Chem Ind
Publication of TW200730886A publication Critical patent/TW200730886A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

This invention provides a light diffusing sheet employing at least one side of the transparent film to form a light diffusing layer comprising at least one type of fine particles group dispersed in a light transparent resin, characterized in that the absolute value of the difference in refractive index between the light transparent resin constituting the light diffusing layer and at least one type of fine particles group is larger than 0.05; a light diffusing plate characterized by employing at least one side of the transparent support body to form the light diffusing layer comprising at least one type of fine particles group dispersed in the light transparent resin, the absolute value of the difference in refractive index between the light transparent resin constituting the light diffusing layer and at least one type of fine particles group is larger than 0.05; and a light diffusing plate characterized by comprising a light diffusing sheet applied onto at least one side of the transparent support body with the aid of an adhesive or a pressure-sensitive adhesive, the light diffusing sheet comprising a transparent film and a light diffusing layer provided on one side of the transparent film and formed at least one type of fine particles group dispersed in a light transparent resin, the absolute value of the difference in refractive index between the light transparent resin constituting the light diffusing layer and at least one type of fine particles group is larger than 0.05. The light diffusing sheet and light diffusing plates has excellent light diffusing properties and light focusing properties, and can maintain high total light transmittance and brightness in the basic optical properties, can reduce the members of a backlight unit and, and the light diffusing layer is liable to scratch defects, and thus is suitable for a LCD backlight unit.
TW095147639A 2005-12-21 2006-12-19 Light diffusing sheet and light diffusing plate, and backlight unit and liquid crystal display device employing the same TW200730886A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005368425 2005-12-21
JP2006025946 2006-02-02
JP2006060196 2006-03-06

Publications (1)

Publication Number Publication Date
TW200730886A true TW200730886A (en) 2007-08-16

Family

ID=38188632

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095147639A TW200730886A (en) 2005-12-21 2006-12-19 Light diffusing sheet and light diffusing plate, and backlight unit and liquid crystal display device employing the same

Country Status (2)

Country Link
TW (1) TW200730886A (en)
WO (1) WO2007072856A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI384283B (en) * 2007-10-04 2013-02-01 Au Optronics Corp Backlight module with light emitting diode
CN103109211A (en) * 2010-09-17 2013-05-15 日东电工株式会社 Methods for manufacturing light-diffusing element and polarizing plate with light-diffusing element, and light-diffusing element and polarizing plate with light-diffusing element obtained by same methods
CN103119479A (en) * 2010-09-17 2013-05-22 日东电工株式会社 Light-diffusing element and polarizing plate provided therewith
TWI456299B (en) * 2008-10-02 2014-10-11
TWI461745B (en) * 2009-03-26 2014-11-21 Nitto Denko Corp Method for manufacturing light diffusing element, light diffusing element, polarizing element with light diffusing element, and method for manufacturing liquid crystal display device
TWI465779B (en) * 2011-04-12 2014-12-21 Keiwa Inc A light diffusion sheet, an optical unit, a backlight unit, and a liquid crystal display device
TWI468740B (en) * 2010-09-17 2015-01-11 Nitto Denko Corp A light diffusion film, a liquid crystal display device, and a lighting fixture
TWI468741B (en) * 2010-09-17 2015-01-11 Nitto Denko Corp A light diffusion element, a polarizing plate with a light diffusion element, and a liquid crystal display device using the same
TWI468742B (en) * 2010-09-17 2015-01-11 Nitto Denko Corp A light diffusion element, a polarizing plate for a light diffusion element, a polarizing element, and a liquid crystal display device using the same
TWI474052B (en) * 2010-03-18 2015-02-21 Dainippon Printing Co Ltd Anti-glare film, anti-glare film manufacturing method, polarizing film and image display device
TWI497122B (en) * 2011-08-08 2015-08-21 Sony Corp Diffusion sheet, backlight, liquid crystal display apparatus, and method of producing a diffusion sheet
CN106233166A (en) * 2014-04-21 2016-12-14 松下知识产权经营株式会社 Optics and illuminating cover
CN107076885A (en) * 2014-10-24 2017-08-18 三菱瓦斯化学株式会社 Optical diffusion film
CN113406739A (en) * 2021-07-15 2021-09-17 江西古川胶带有限公司 Optical diffusion film and preparation method and application thereof

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5117422B2 (en) * 2008-07-15 2013-01-16 富士フイルム株式会社 Light emitting device and manufacturing method thereof
WO2010033571A1 (en) * 2008-09-17 2010-03-25 3M Innovative Properties Company Optical adhesive with diffusive properties
US10581020B2 (en) 2011-02-08 2020-03-03 Vitro Flat Glass Llc Light extracting substrate for organic light emitting diode
TW201317673A (en) * 2011-10-24 2013-05-01 Au Optronics Corp Transparent display
TWI512066B (en) * 2012-01-16 2015-12-11 Toyo Ink Sc Holdings Co Ltd Resin composition for light scattering layer, light scattering layer and organic electroluminescence device
JP5263460B1 (en) * 2012-06-12 2013-08-14 東洋インキＳｃホールディングス株式会社 Resin composition for light scattering layer, light scattering layer, and organic electroluminescence device
DE102018208185A1 (en) 2018-05-24 2019-11-28 Robert Bosch Gmbh Optical element for light concentration and manufacturing method for optical element for light concentration
CN113189687A (en) * 2021-05-18 2021-07-30 合肥翰博星辰高新材料有限公司 Diffusion film, backlight module and display device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06273762A (en) * 1993-03-19 1994-09-30 Tanaka Kikinzoku Kogyo Kk Light diffusion sheet for back light and its production
JPH09113708A (en) * 1995-10-19 1997-05-02 Dainippon Printing Co Ltd Light-diffusing film
JP2001318210A (en) * 2000-05-11 2001-11-16 Keiwa Inc Light diffusion sheet and backlight unit using the same

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI384283B (en) * 2007-10-04 2013-02-01 Au Optronics Corp Backlight module with light emitting diode
TWI456299B (en) * 2008-10-02 2014-10-11
TWI461745B (en) * 2009-03-26 2014-11-21 Nitto Denko Corp Method for manufacturing light diffusing element, light diffusing element, polarizing element with light diffusing element, and method for manufacturing liquid crystal display device
US9164204B2 (en) 2010-03-18 2015-10-20 Dai Nippon Printing Co., Ltd. Anti-glare film, manufacturing method for same, polarizing plate and image display device
US9164203B2 (en) 2010-03-18 2015-10-20 Dai Nippon Printing Co., Ltd. Anti-glare film, manufacturing method for same, polarizing plate and image display device
TWI474052B (en) * 2010-03-18 2015-02-21 Dainippon Printing Co Ltd Anti-glare film, anti-glare film manufacturing method, polarizing film and image display device
TWI468741B (en) * 2010-09-17 2015-01-11 Nitto Denko Corp A light diffusion element, a polarizing plate with a light diffusion element, and a liquid crystal display device using the same
TWI468740B (en) * 2010-09-17 2015-01-11 Nitto Denko Corp A light diffusion film, a liquid crystal display device, and a lighting fixture
US9417364B2 (en) 2010-09-17 2016-08-16 Nitto Denko Corporation Light-diffusing element and polarizing plate provided therewith
TWI468742B (en) * 2010-09-17 2015-01-11 Nitto Denko Corp A light diffusion element, a polarizing plate for a light diffusion element, a polarizing element, and a liquid crystal display device using the same
TWI468743B (en) * 2010-09-17 2015-01-11 Nitto Denko Corp A light diffusing element and a polarizing element with a light diffusing element
US20130301130A1 (en) * 2010-09-17 2013-11-14 Nitto Denko Corporation Light-diffusing element and polarizing plate provided therewith
US9804304B2 (en) 2010-09-17 2017-10-31 Nitto Denko Corporation Light-diffusing element, polarizer having light-diffusing element, and liquid crystal display device having same
CN103119479A (en) * 2010-09-17 2013-05-22 日东电工株式会社 Light-diffusing element and polarizing plate provided therewith
CN103109211A (en) * 2010-09-17 2013-05-15 日东电工株式会社 Methods for manufacturing light-diffusing element and polarizing plate with light-diffusing element, and light-diffusing element and polarizing plate with light-diffusing element obtained by same methods
US9176264B2 (en) 2010-09-17 2015-11-03 Nitto Denko Corporation Light-diffusing element, polarizing plate having light-diffusing element attached thereto, polarizing element, and liquid crystal display device equipped with those components
TWI514012B (en) * 2010-09-17 2015-12-21 Nitto Denko Corp A light diffusion element and a method of manufacturing the polarizing element with the light diffusion element, and a method of manufacturing the polarizing plate
CN103109211B (en) * 2010-09-17 2016-03-30 日东电工株式会社 Light diffusion element and band light diffusion element polarization plates manufacture method and by these method gained light diffusion element and band light diffusion element polarization plates
US9389346B2 (en) 2010-09-17 2016-07-12 Nitto Denko Corporation Light diffusing film, polarizing plate with light diffusing film, liquid crystal display device, and lighting equipment
TWI465779B (en) * 2011-04-12 2014-12-21 Keiwa Inc A light diffusion sheet, an optical unit, a backlight unit, and a liquid crystal display device
TWI497122B (en) * 2011-08-08 2015-08-21 Sony Corp Diffusion sheet, backlight, liquid crystal display apparatus, and method of producing a diffusion sheet
CN106233166A (en) * 2014-04-21 2016-12-14 松下知识产权经营株式会社 Optics and illuminating cover
CN106233166B (en) * 2014-04-21 2020-03-13 松下知识产权经营株式会社 Optical member and lighting cover
CN107076885A (en) * 2014-10-24 2017-08-18 三菱瓦斯化学株式会社 Optical diffusion film
US10416360B2 (en) 2014-10-24 2019-09-17 Mitsubishi Gas Chemical Company, Inc. Light diffusion film
CN107076885B (en) * 2014-10-24 2020-07-07 三菱瓦斯化学株式会社 Light diffusion film
CN113406739A (en) * 2021-07-15 2021-09-17 江西古川胶带有限公司 Optical diffusion film and preparation method and application thereof

Also Published As

Publication number Publication date
WO2007072856A1 (en) 2007-06-28

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