WO2018117721A1 - Miroir à réflectivité variable - Google Patents

Miroir à réflectivité variable Download PDF

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Publication number
WO2018117721A1
WO2018117721A1 PCT/KR2017/015309 KR2017015309W WO2018117721A1 WO 2018117721 A1 WO2018117721 A1 WO 2018117721A1 KR 2017015309 W KR2017015309 W KR 2017015309W WO 2018117721 A1 WO2018117721 A1 WO 2018117721A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
variable
mode
crystal cell
mirror
Prior art date
Application number
PCT/KR2017/015309
Other languages
English (en)
Korean (ko)
Inventor
임은정
김진홍
오동현
유정선
이현준
김남훈
Original Assignee
주식회사 엘지화학
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 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to JP2019518386A priority Critical patent/JP2019530016A/ja
Priority to CN201780064918.4A priority patent/CN109844585B/zh
Priority to EP17883201.0A priority patent/EP3561558A4/fr
Priority to US16/471,329 priority patent/US20200225393A1/en
Priority claimed from KR1020170177678A external-priority patent/KR101979769B1/ko
Publication of WO2018117721A1 publication Critical patent/WO2018117721A1/fr

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Classifications

    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13475—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which at least one liquid crystal cell or layer is doped with a pleochroic dye, e.g. GH-LC cell
    • 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
    • G02F1/133528—Polarisers
    • G02F1/133536—Reflective polarizers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3016—Polarising elements involving passive liquid crystal elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements

Definitions

  • the thickness of the guest host liquid crystal layer may be appropriately selected in consideration of the purpose of the present application.
  • the thickness of the guest host liquid crystal layer may be, for example, about 3 ⁇ m to 20 ⁇ m or 3 ⁇ m to 15 ⁇ m.
  • the reflective polarizing film may have selective transmission and reflection characteristics with respect to incident light.
  • the reflective polarizing film may have a property of transmitting one of the transverse and longitudinal wave components of light and reflecting the other component.
  • the light passing through the reflective polarizing film and the light reflected from the reflective polarizing film may have polarization characteristics.
  • the polarization direction of the transmitted light and the polarization direction of the reflected light may be orthogonal to each other. That is, the reflective polarizing film may have a transmission axis and a reflection axis orthogonal to the plane direction.
  • the second liquid crystal cell may be driven in an appropriate mode to switch between the phase difference mode and the non-phase difference mode.
  • the second liquid crystal cell may be embodied in a liquid crystal based mode in which a phase difference variable characteristic plays the same role as a half wave plate, or may be implemented as a stacked element of a liquid crystal based mode and a compensation film.
  • the second liquid crystal cell may be a 90 degree TN mode liquid crystal cell, a 270 degree STN mode liquid crystal cell, an ECB mode liquid crystal cell or a laminate of a half wave plate and a VA mode liquid crystal cell.
  • variable reflectivity mirror of the present application can implement excellent reflectivity variable characteristics by lowering the reflectance in the anti-reflection mode.
  • a variable reflectance mirror was produced in the same manner as in Example 1 except that the VA mode GHLC cell of Preparation Example 2 was used instead of the VA mode GHLC cell of Preparation Example 1.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

La présente invention concerne un miroir à réflectivité variable utilisant une cellule à cristaux liquides. Le miroir à réflectivité variable de la présente invention peut comprendre séquentiellement : une première cellule à cristaux liquides comprenant une couche de cristaux liquides hôte-invité ; un premier film polarisant réfléchissant ; une seconde cellule à cristaux liquides comprenant une couche de cristaux liquides ayant un contraste de phase variable ; un second film polarisant réfléchissant ; et une plaque absorbante. Le miroir à réflectivité variable de la présente invention diminue sa réflectivité dans un mode anti-réflexion, ce qui permet de mettre en œuvre une excellente caractéristique de réflectivité variable.
PCT/KR2017/015309 2016-12-23 2017-12-22 Miroir à réflectivité variable WO2018117721A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2019518386A JP2019530016A (ja) 2016-12-23 2017-12-22 反射率可変ミラー
CN201780064918.4A CN109844585B (zh) 2016-12-23 2017-12-22 反射率可变镜
EP17883201.0A EP3561558A4 (fr) 2016-12-23 2017-12-22 Miroir à réflectivité variable
US16/471,329 US20200225393A1 (en) 2016-12-23 2017-12-22 Reflectance-Variable Mirror

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20160177578 2016-12-23
KR10-2016-0177578 2016-12-23
KR1020170177678A KR101979769B1 (ko) 2016-12-23 2017-12-22 반사율 가변 미러
KR10-2017-0177678 2017-12-22

Publications (1)

Publication Number Publication Date
WO2018117721A1 true WO2018117721A1 (fr) 2018-06-28

Family

ID=62626965

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/015309 WO2018117721A1 (fr) 2016-12-23 2017-12-22 Miroir à réflectivité variable

Country Status (1)

Country Link
WO (1) WO2018117721A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111948856A (zh) * 2019-05-17 2020-11-17 群创光电股份有限公司 电子装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060018773A (ko) * 2004-08-25 2006-03-02 삼성전자주식회사 반투과형 표시장치 및 그 형성 방법
KR100646444B1 (ko) * 2003-11-13 2006-11-14 주식회사 소디 반사율 조절이 가능한 엘시디 미러
KR20110040909A (ko) * 2008-07-10 2011-04-20 젠텍스 코포레이션 이방성 폴리머 적층체를 갖는 리어뷰 미러 어셈블리
KR20160039997A (ko) * 2014-10-02 2016-04-12 엘지디스플레이 주식회사 반사율 가변형 미러 디스플레이 및 그 구동방법
KR20160129350A (ko) * 2015-04-30 2016-11-09 주식회사 엘지화학 플렉서블 기판을 포함하는 만곡형 미러

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100646444B1 (ko) * 2003-11-13 2006-11-14 주식회사 소디 반사율 조절이 가능한 엘시디 미러
KR20060018773A (ko) * 2004-08-25 2006-03-02 삼성전자주식회사 반투과형 표시장치 및 그 형성 방법
KR20110040909A (ko) * 2008-07-10 2011-04-20 젠텍스 코포레이션 이방성 폴리머 적층체를 갖는 리어뷰 미러 어셈블리
KR20160039997A (ko) * 2014-10-02 2016-04-12 엘지디스플레이 주식회사 반사율 가변형 미러 디스플레이 및 그 구동방법
KR20160129350A (ko) * 2015-04-30 2016-11-09 주식회사 엘지화학 플렉서블 기판을 포함하는 만곡형 미러

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3561558A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111948856A (zh) * 2019-05-17 2020-11-17 群创光电股份有限公司 电子装置
CN111948856B (zh) * 2019-05-17 2023-08-08 群创光电股份有限公司 电子装置

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