TW200745619A - Light diffuser, manufacturing method of light diffuser, surface-emitting device, display device and illuminance device - Google Patents

Light diffuser, manufacturing method of light diffuser, surface-emitting device, display device and illuminance device

Info

Publication number
TW200745619A
TW200745619A TW096111059A TW96111059A TW200745619A TW 200745619 A TW200745619 A TW 200745619A TW 096111059 A TW096111059 A TW 096111059A TW 96111059 A TW96111059 A TW 96111059A TW 200745619 A TW200745619 A TW 200745619A
Authority
TW
Taiwan
Prior art keywords
foam
light diffuser
area
occupancy
rate
Prior art date
Application number
TW096111059A
Other languages
Chinese (zh)
Inventor
Junya Kojima
Tomoyuki Takada
Fumio Jinno
Original Assignee
Oji Paper Co
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 Oji Paper Co filed Critical Oji Paper Co
Publication of TW200745619A publication Critical patent/TW200745619A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • G02B5/0247—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of voids or pores
    • 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
    • G02B5/0263—Diffusing elements; Afocal elements characterised by the diffusing properties with positional variation of the diffusing properties, e.g. gradient or patterned diffuser
    • 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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

A light diffuser including a foamed body formed by imparting radiation energy and heat energy, and a light diffusing portion having a predetermined distribution pattern with respect to the foam density. The rate of foam occupancy in the foamed body is 65% or less, and the light diffusing portion may include a low foam area in which the rate of foam occupancy is 0.5% or less and a high foam area in which the rate of foam occupancy is 1% or more. Also, an intermediate foam area may be present between the low foam area and high foam area so as to bridge the two areas. In the intermediate foam area, the rate of foam occupancy gradually increases from a side adjacent to the low foam area to a side adjacent to the high foam area.
TW096111059A 2006-03-29 2007-03-29 Light diffuser, manufacturing method of light diffuser, surface-emitting device, display device and illuminance device TW200745619A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006089921A JP2007264343A (en) 2006-03-29 2006-03-29 Light diffusion body, manufacturing method of light diffusion body, surface light emitting device, display device, and illumination device

Publications (1)

Publication Number Publication Date
TW200745619A true TW200745619A (en) 2007-12-16

Family

ID=38541269

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096111059A TW200745619A (en) 2006-03-29 2007-03-29 Light diffuser, manufacturing method of light diffuser, surface-emitting device, display device and illuminance device

Country Status (3)

Country Link
JP (1) JP2007264343A (en)
TW (1) TW200745619A (en)
WO (1) WO2007111353A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8172387B2 (en) 2008-04-18 2012-05-08 Industrial Technology Research Institute Supply system and injection-head structure thereof
CN102822247A (en) * 2010-04-14 2012-12-12 3M创新有限公司 Patterned gradient polymer film and method
CN109613636A (en) * 2018-12-28 2019-04-12 深圳Tcl数字技术有限公司 Light diffusing sheet manufacturing method, light diffusing sheet and backlight module
CN110133774A (en) * 2018-07-25 2019-08-16 湖北费米拉曼光电科技有限公司 A kind of porous diffusion barrier and the preparation method and application thereof
TWI738459B (en) * 2020-08-12 2021-09-01 穎台科技股份有限公司 Light diffusion plate and method for manufacturing the same
TWI753842B (en) * 2020-08-12 2022-01-21 穎台科技股份有限公司 Light diffusion plate and method for manufacturing the same

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8371720B2 (en) 2007-11-02 2013-02-12 Sharp Kabushiki Kaisha Diffusion sheet, diffusion unit, illuminating unit, and display device
US7845826B2 (en) * 2008-01-15 2010-12-07 Skc Haas Display Films Co., Ltd. Multilayered integrated backlight illumination assembly
US8330896B2 (en) 2008-07-04 2012-12-11 Sharp Kabushiki Kaisha Liquid crystal display device
KR101192257B1 (en) 2008-10-02 2012-10-18 주식회사 엘지화학 Condensing film having lamp concealing property
KR101540216B1 (en) 2008-11-03 2015-07-29 삼성디스플레이 주식회사 Optical member and display device having the same
US20120013810A1 (en) * 2009-01-20 2012-01-19 Sharp Kabushiki Kaisha Lighting device, display device and television receiver
US8827480B2 (en) 2009-09-16 2014-09-09 Sharp Kabushiki Kaisha Lighting device, display device, and television receiver
WO2013132819A1 (en) * 2012-03-06 2013-09-12 富士フイルム株式会社 Production method for film having honeycomb structure
KR101612750B1 (en) * 2015-10-21 2016-04-15 주식회사 젬 Led lamp
WO2021069231A1 (en) * 2019-10-11 2021-04-15 Asml Netherlands B.V. Transmissive diffuser
FR3105408B1 (en) * 2019-12-23 2021-12-03 cosnova GmbH MEASURING THE COLOR OF A TARGET AREA OF INTEREST OF A MATERIAL, WITH ILLUMINATION CONTROLLED
FR3105407B1 (en) 2019-12-23 2021-12-03 cosnova GmbH MEASURING THE COLOR OF A TARGET AREA OF INTEREST OF A MATERIAL, WITH COLOR CALIBRATION TARGETS

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03256090A (en) * 1990-03-06 1991-11-14 Meitaku Syst:Kk Face light source unit
JPH05477A (en) * 1991-06-21 1993-01-08 Nippon Zeon Co Ltd Brightness equalizing sheet and manufacture thereof
JPH0694923A (en) * 1991-07-25 1994-04-08 Ono Gijutsu Kenkyusho:Kk Thin-walled light box
JP2004002812A (en) * 2002-04-25 2004-01-08 Oji Paper Co Ltd Foaming composition and method for producing foamed material by using the same
JP4608977B2 (en) * 2003-07-18 2011-01-12 王子製紙株式会社 Light reflector
JP2005054176A (en) * 2003-07-18 2005-03-03 Oji Paper Co Ltd Sheet-like foamed product and process for its production

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8172387B2 (en) 2008-04-18 2012-05-08 Industrial Technology Research Institute Supply system and injection-head structure thereof
CN102822247A (en) * 2010-04-14 2012-12-12 3M创新有限公司 Patterned gradient polymer film and method
CN110133774A (en) * 2018-07-25 2019-08-16 湖北费米拉曼光电科技有限公司 A kind of porous diffusion barrier and the preparation method and application thereof
CN109613636A (en) * 2018-12-28 2019-04-12 深圳Tcl数字技术有限公司 Light diffusing sheet manufacturing method, light diffusing sheet and backlight module
TWI738459B (en) * 2020-08-12 2021-09-01 穎台科技股份有限公司 Light diffusion plate and method for manufacturing the same
TWI753842B (en) * 2020-08-12 2022-01-21 穎台科技股份有限公司 Light diffusion plate and method for manufacturing the same

Also Published As

Publication number Publication date
JP2007264343A (en) 2007-10-11
WO2007111353A1 (en) 2007-10-04

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