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WO2009011199A1 - ディスプレイおよびそれに用いられる視野角制御素子 - Google Patents

ディスプレイおよびそれに用いられる視野角制御素子 Download PDF

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Publication number
WO2009011199A1
WO2009011199A1 PCT/JP2008/061199 JP2008061199W WO2009011199A1 WO 2009011199 A1 WO2009011199 A1 WO 2009011199A1 JP 2008061199 W JP2008061199 W JP 2008061199W WO 2009011199 A1 WO2009011199 A1 WO 2009011199A1
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WO
WIPO (PCT)
Prior art keywords
light
visual angle
display
liquid crystal
angle
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2008/061199
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English (en)
French (fr)
Inventor
Takehiko Sakai
Dai Chiba
Katsuhiko Morishita
Yoshiharu Kataoka
Chikanori Tsukamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to CN2008800198000A priority Critical patent/CN101681577B/zh
Priority to JP2009523579A priority patent/JP4928608B2/ja
Priority to US12/668,871 priority patent/US8098350B2/en
Publication of WO2009011199A1 publication Critical patent/WO2009011199A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/13471—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 all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/281—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for attenuating light intensity, e.g. comprising rotatable polarising elements
    • 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
    • G02F1/1323—Arrangements for providing a switchable viewing angle
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133634—Birefringent elements, e.g. for optical compensation the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/44—Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/40—Materials having a particular birefringence, retardation
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/09—Function characteristic transflective
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/01—Number of plates being 1
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/14—Negative birefingence

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

　斜め方向の広範囲な視角から画像表示装置の表示が見えないように遮光することができるディスプレイと、これに用いられる視野角制御素子とを提供する。視野角制御用液晶パネル（２）は、狭視野角状態の場合に、所定の波長域の光が極角φH以上で入射した際に、液晶セル（２１）が位相差を与えることにより、この光が偏光板（２２）を透過しないよう遮蔽する。視野角制御用液晶パネル（３）は、狭視野角状態の場合に、偏光板（２２）を透過した光のうち極角φL以上で入射した光に対して液晶セル（３１）が位相差を与え、この光が偏光板（３２）を透過しないよう遮蔽する。これにより、全体として極角φL以上の光が遮蔽され、広範囲な狭視野角状態が実現される。
PCT/JP2008/061199 2007-07-19 2008-06-19 ディスプレイおよびそれに用いられる視野角制御素子 Ceased WO2009011199A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2008800198000A CN101681577B (zh) 2007-07-19 2008-06-19 显示器和用于该显示器的视野角控制元件
JP2009523579A JP4928608B2 (ja) 2007-07-19 2008-06-19 ディスプレイおよびそれに用いられる視野角制御素子
US12/668,871 US8098350B2 (en) 2007-07-19 2008-06-19 Display and view angle control element employed therein

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-188533 2007-07-19
JP2007188533 2007-07-19

Publications (1)

Publication Number Publication Date
WO2009011199A1 true WO2009011199A1 (ja) 2009-01-22

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Country Status (4)

Country Link
US (1) US8098350B2 (ja)
JP (1) JP4928608B2 (ja)
CN (1) CN101681577B (ja)
WO (1) WO2009011199A1 (ja)

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JP2018072819A (ja) * 2016-10-25 2018-05-10 揚昇照明股▲ふん▼有限公司 視野角制御装置及び視野角制御可能な表示装置
WO2018109991A1 (ja) * 2016-12-12 2018-06-21 シャープ株式会社 表示装置、電子ミラー、表示装置の制御方法、プログラム、記録媒体
JP2018120210A (ja) * 2017-01-25 2018-08-02 揚昇照明股▲ふん▼有限公司 視野角切り替え可能な表示装置
KR20200122326A (ko) * 2018-01-25 2020-10-27 리얼디 스파크, 엘엘씨 프라이버시 디스플레이를 위한 반사 광학 스택
US11624944B2 (en) 2020-07-29 2023-04-11 Reald Spark, Llc Backlight for switchable directional display
US11668963B2 (en) 2020-04-30 2023-06-06 Reald Spark, Llc Directional display apparatus
US11733578B2 (en) 2019-11-13 2023-08-22 ReaID Spark, LLC Display device with uniform off-axis luminance reduction
US11740496B2 (en) 2020-07-29 2023-08-29 Reald Spark, Llc Pupillated illumination apparatus
US11747693B2 (en) 2018-07-18 2023-09-05 Reald Spark, Llc Optical stack for switchable directional display
US11796828B2 (en) 2019-12-10 2023-10-24 Reald Spark, Llc Control of reflections of a display device
US11809052B2 (en) 2018-06-29 2023-11-07 Reald Spark, Llc Stabilization for privacy display
US11808965B2 (en) 2018-03-22 2023-11-07 Reald Spark, Llc Optical waveguide for directional backlight
US11874541B2 (en) 2019-07-02 2024-01-16 Reald Spark, Llc Directional display apparatus
US11892718B2 (en) 2022-04-07 2024-02-06 Reald Spark, Llc Directional display apparatus
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US12066717B2 (en) 2017-09-15 2024-08-20 Reald Spark, Llc Optical stack for switchable directional display
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JP2018072819A (ja) * 2016-10-25 2018-05-10 揚昇照明股▲ふん▼有限公司 視野角制御装置及び視野角制御可能な表示装置
JP7108393B2 (ja) 2016-10-25 2022-07-28 中強光電股▲ふん▼有限公司 視野角制御装置及び視野角制御可能な表示装置
WO2018109991A1 (ja) * 2016-12-12 2018-06-21 シャープ株式会社 表示装置、電子ミラー、表示装置の制御方法、プログラム、記録媒体
JP7114247B2 (ja) 2017-01-25 2022-08-08 中強光電股▲ふん▼有限公司 視野角切り替え可能な表示装置
JP2018120210A (ja) * 2017-01-25 2018-08-02 揚昇照明股▲ふん▼有限公司 視野角切り替え可能な表示装置
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US12366701B2 (en) 2017-05-08 2025-07-22 Reald Spark, Llc Optical stack for imaging directional backlights
US12066717B2 (en) 2017-09-15 2024-08-20 Reald Spark, Llc Optical stack for switchable directional display
JP2023123475A (ja) * 2018-01-25 2023-09-05 リアルディー スパーク エルエルシー プライバシーディスプレイ用反射型光学スタック
JP2021513101A (ja) * 2018-01-25 2021-05-20 リアルディー スパーク エルエルシー プライバシーディスプレイ用反射型光学スタック
JP7291444B2 (ja) 2018-01-25 2023-06-15 リアルディー スパーク エルエルシー ディスプレイデバイスおよび視野角制御光学素子
US12038633B2 (en) 2018-01-25 2024-07-16 Reald Spark, Llc Reflective optical stack for privacy display
JP7615219B2 (ja) 2018-01-25 2025-01-16 リアルディー スパーク エルエルシー プライバシーディスプレイ用反射型光学スタック
US12169339B2 (en) 2018-01-25 2024-12-17 Reald Spark, Llc Touch screen for privacy display
US11630336B2 (en) 2018-01-25 2023-04-18 Reald Spark, Llc Reflective optical stack for privacy display
KR102853103B1 (ko) * 2018-01-25 2025-09-03 리얼디 스파크, 엘엘씨 프라이버시 디스플레이를 위한 반사 광학 스택
KR20200122326A (ko) * 2018-01-25 2020-10-27 리얼디 스파크, 엘엘씨 프라이버시 디스플레이를 위한 반사 광학 스택
US11808965B2 (en) 2018-03-22 2023-11-07 Reald Spark, Llc Optical waveguide for directional backlight
US11809052B2 (en) 2018-06-29 2023-11-07 Reald Spark, Llc Stabilization for privacy display
US11874576B2 (en) 2018-06-29 2024-01-16 Reald Spark, Llc Optical stack for privacy display
US12174504B2 (en) 2018-07-18 2024-12-24 Reald Spark, Llc Optical stack for switchable directional display
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JP4928608B2 (ja) 2012-05-09
US8098350B2 (en) 2012-01-17
JPWO2009011199A1 (ja) 2010-09-16
CN101681577A (zh) 2010-03-24
CN101681577B (zh) 2011-08-24
US20100188617A1 (en) 2010-07-29

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