WO2010117238A3 - Image display apparatus capable of controlling viewing angle - Google Patents

Image display apparatus capable of controlling viewing angle Download PDF

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Publication number
WO2010117238A3
WO2010117238A3 PCT/KR2010/002203 KR2010002203W WO2010117238A3 WO 2010117238 A3 WO2010117238 A3 WO 2010117238A3 KR 2010002203 W KR2010002203 W KR 2010002203W WO 2010117238 A3 WO2010117238 A3 WO 2010117238A3
Authority
WO
WIPO (PCT)
Prior art keywords
backlight unit
image display
light
viewing angle
display apparatus
Prior art date
Application number
PCT/KR2010/002203
Other languages
French (fr)
Korean (ko)
Other versions
WO2010117238A2 (en
Inventor
김용범
김양래
한창일
Original Assignee
주식회사 토비스
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 토비스 filed Critical 주식회사 토비스
Publication of WO2010117238A2 publication Critical patent/WO2010117238A2/en
Publication of WO2010117238A3 publication Critical patent/WO2010117238A3/en

Links

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
    • G02F1/1323—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
    • G02F1/133504—Diffusing, scattering, diffracting 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
    • G02F1/133—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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • 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)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention relates to an image display apparatus capable of controlling a viewing angle. The image display apparatus comprises a 1st backlight unit, a 2nd backlight unit, a light path limiting plate, and an image display panel. The 1st backlight unit is formed to selectively emit light, and the 2nd backlight unit is arranged on the 1st backlight unit and formed to selectively emit light. The light path limiting plate is arranged between the 1st backlight unit and the 2nd backlight unit so that the light emitted from the 1st backlight unit passes therethrough, and comprises a plurality of slots for limiting the path of the incoming light to reduce diffusion of the light, which is emitted and inputted from the 1st backlight unit. The image display panel is arranged on the 2nd backlight unit to display images so that the light emitted from the 1st backlight unit and the 2nd backlight unit passes therethrough. Since the two backlight units are vertically arrayed and the light path limiting plate formed with a plurality of slots to limit the light diffusion path is included, a light diffusion spreading angle region which passes through the image display panel, can be adjusted and as a result a viewing angle is controlled. Therefore, an image display apparatus with a controllable viewing angle is implemented through a simple structure.
PCT/KR2010/002203 2009-04-10 2010-04-09 Image display apparatus capable of controlling viewing angle WO2010117238A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090031077A KR20100112679A (en) 2009-04-10 2009-04-10 Image display device capable of controlling viewing angle
KR10-2009-0031077 2009-04-10

Publications (2)

Publication Number Publication Date
WO2010117238A2 WO2010117238A2 (en) 2010-10-14
WO2010117238A3 true WO2010117238A3 (en) 2011-01-20

Family

ID=42936742

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/002203 WO2010117238A2 (en) 2009-04-10 2010-04-09 Image display apparatus capable of controlling viewing angle

Country Status (2)

Country Link
KR (1) KR20100112679A (en)
WO (1) WO2010117238A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160030820A (en) * 2014-09-11 2016-03-21 엘지디스플레이 주식회사 Backlight unit and image display device using the same
DE102021204507B3 (en) * 2021-05-05 2022-09-29 Continental Automotive Technologies GmbH Assembly for a backlight of a display and display with a backlight with such an assembly
KR102506070B1 (en) * 2022-09-27 2023-03-06 주식회사 탑런토탈솔루션 Backlight unit for display with viewing angle control and method for manufacturing the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1097199A (en) * 1996-09-20 1998-04-14 Sharp Corp Diffused light transmission plate, source of backlight, and liquid crystal display device
JP2006235288A (en) * 2005-02-25 2006-09-07 Casio Comput Co Ltd Display device, and backlight used therefor
JP2007066555A (en) * 2005-08-29 2007-03-15 Casio Comput Co Ltd Surface light source and liquid crystal display device
JP2008098037A (en) * 2006-10-13 2008-04-24 Mitsubishi Electric Corp Planar light source device, display device equipped with planar light source device, and lighting method of planar light source device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1097199A (en) * 1996-09-20 1998-04-14 Sharp Corp Diffused light transmission plate, source of backlight, and liquid crystal display device
JP2006235288A (en) * 2005-02-25 2006-09-07 Casio Comput Co Ltd Display device, and backlight used therefor
JP2007066555A (en) * 2005-08-29 2007-03-15 Casio Comput Co Ltd Surface light source and liquid crystal display device
JP2008098037A (en) * 2006-10-13 2008-04-24 Mitsubishi Electric Corp Planar light source device, display device equipped with planar light source device, and lighting method of planar light source device

Also Published As

Publication number Publication date
WO2010117238A2 (en) 2010-10-14
KR20100112679A (en) 2010-10-20

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