TWI434082B - A light guide sheet and a backlight unit using the same - Google Patents

A light guide sheet and a backlight unit using the same Download PDF

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Publication number
TWI434082B
TWI434082B TW099102006A TW99102006A TWI434082B TW I434082 B TWI434082 B TW I434082B TW 099102006 A TW099102006 A TW 099102006A TW 99102006 A TW99102006 A TW 99102006A TW I434082 B TWI434082 B TW I434082B
Authority
TW
Taiwan
Prior art keywords
light
light guide
guide sheet
diffusing
base film
Prior art date
Application number
TW099102006A
Other languages
English (en)
Chinese (zh)
Other versions
TW201028745A (en
Inventor
Kenichi Harada
Original Assignee
Keiwa Inc
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 Keiwa Inc filed Critical Keiwa Inc
Publication of TW201028745A publication Critical patent/TW201028745A/zh
Application granted granted Critical
Publication of TWI434082B publication Critical patent/TWI434082B/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means 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
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)
  • Optical Elements Other Than Lenses (AREA)
TW099102006A 2009-01-30 2010-01-26 A light guide sheet and a backlight unit using the same TWI434082B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009020596A JP5437652B2 (ja) 2009-01-30 2009-01-30 導光シート及びこれを用いたバックライトユニット

Publications (2)

Publication Number Publication Date
TW201028745A TW201028745A (en) 2010-08-01
TWI434082B true TWI434082B (zh) 2014-04-11

Family

ID=42586223

Family Applications (1)

Application Number Title Priority Date Filing Date
TW099102006A TWI434082B (zh) 2009-01-30 2010-01-26 A light guide sheet and a backlight unit using the same

Country Status (4)

Country Link
JP (1) JP5437652B2 (ko)
KR (1) KR101100151B1 (ko)
CN (1) CN101793381A (ko)
TW (1) TWI434082B (ko)

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CN202720351U (zh) * 2011-06-07 2013-02-06 住友化学株式会社 导光板、表面光源设备、透射型图像显示设备
KR20140059294A (ko) * 2011-09-09 2014-05-15 수미토모 케미칼 컴퍼니 리미티드 도광판, 면 광원 장치 및 투과형 화상 표시 장치
JP2013140702A (ja) * 2011-12-30 2013-07-18 Toyota Tsusho Corp 光分配層及びそれを用いた導光装置
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JP2014112487A (ja) * 2012-12-05 2014-06-19 Sumitomo Chemical Co Ltd 導光板
JP2014116264A (ja) * 2012-12-12 2014-06-26 Matsuda Screen Inc 導光板、照明装置、表示装置及び照明器具
JP6148495B2 (ja) * 2013-02-25 2017-06-14 恵和株式会社 超薄型液晶バックライト用ライトガイドフィルム、超薄型液晶バックライトユニット及び携帯型コンピュータ
JP6293415B2 (ja) 2013-02-25 2018-03-14 恵和株式会社 ライトガイドフィルム、超薄型液晶バックライトユニット及び携帯型コンピュータ
JP6181936B2 (ja) 2013-02-25 2017-08-16 恵和株式会社 ライトガイドフィルムの製造方法、ライトガイドフィルム、超薄型液晶バックライトユニット及び携帯型コンピュータ
JP6293414B2 (ja) 2013-02-25 2018-03-14 恵和株式会社 超薄型液晶バックライト用ライトガイドフィルム、超薄型液晶バックライトユニット及び携帯型コンピュータ
JP6203513B2 (ja) 2013-03-28 2017-09-27 恵和株式会社 ライトガイドフィルム、バックライトユニット、携帯型コンピュータ及びライトガイドフィルムの製造方法
BR112015030081A2 (pt) * 2013-05-31 2017-07-25 3M Innovative Properties Co laminados de vitrificação que redirecionam luz do dia
JP2015088302A (ja) * 2013-10-30 2015-05-07 富士機械製造株式会社 導光板の製造方法および導光板
JP5767419B1 (ja) * 2014-02-19 2015-08-19 恵和株式会社 導光シート、バックライトユニット及び携帯型端末
JP5767418B1 (ja) 2014-02-19 2015-08-19 恵和株式会社 導光シート、バックライトユニット及び携帯型端末
WO2015186842A1 (ja) 2014-06-06 2015-12-10 恵和株式会社 エッジライト型バックライトユニット及び反射テープ部材
JP5999672B2 (ja) * 2014-08-05 2016-09-28 ストリーム株式会社 面発光体の製造方法
US10067283B2 (en) 2014-12-23 2018-09-04 Apple Inc. Display backlight with patterned backlight extraction ridges
CN108279534A (zh) * 2015-04-16 2018-07-13 青岛海信电器股份有限公司 一种侧入式显示模组及显示装置
KR101900932B1 (ko) 2015-11-30 2018-09-27 엘지디스플레이 주식회사 광학 필름 및 그 제조방법, 액정 표시장치
KR102155405B1 (ko) * 2016-04-15 2020-09-14 주식회사 엘지화학 도광판 유닛, 이를 구비한 백라이트 유닛 및 액정표시장치
KR102294845B1 (ko) 2016-08-02 2021-08-30 삼성전자주식회사 광학필터, 광학 디바이스, 및 광학필터의 제조방법
KR102659694B1 (ko) * 2017-01-18 2024-04-23 엘지이노텍 주식회사 조명 장치
JP2020060759A (ja) * 2018-10-09 2020-04-16 恵和株式会社 光学シート、バックライトユニット、液晶表示装置及び情報機器
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Also Published As

Publication number Publication date
KR20100088572A (ko) 2010-08-09
KR101100151B1 (ko) 2011-12-28
CN101793381A (zh) 2010-08-04
TW201028745A (en) 2010-08-01
JP5437652B2 (ja) 2014-03-12
JP2010177130A (ja) 2010-08-12

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MM4A Annulment or lapse of patent due to non-payment of fees