WO2008152885A1 - Liquid crystal panel and liquid crystal display device - Google Patents

Liquid crystal panel and liquid crystal display device Download PDF

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Publication number
WO2008152885A1
WO2008152885A1 PCT/JP2008/059171 JP2008059171W WO2008152885A1 WO 2008152885 A1 WO2008152885 A1 WO 2008152885A1 JP 2008059171 W JP2008059171 W JP 2008059171W WO 2008152885 A1 WO2008152885 A1 WO 2008152885A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
optical compensation
polarizer
crystal cell
compensation layer
Prior art date
Application number
PCT/JP2008/059171
Other languages
French (fr)
Japanese (ja)
Inventor
Kentarou Takeda
Hiroyuki Yoshimi
Takashi Shimizu
Junichi Nagase
Original Assignee
Nitto Denko Corporation
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
Priority claimed from JP2008023160A external-priority patent/JP2009015292A/en
Application filed by Nitto Denko Corporation filed Critical Nitto Denko Corporation
Publication of WO2008152885A1 publication Critical patent/WO2008152885A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • 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
    • 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
    • G02F1/133637—Birefringent elements, e.g. for optical compensation characterised by the wavelength dispersion
    • 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
    • G02F2413/03—Number of plates being 3
    • 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
    • G02F2413/04—Number of plates greater than or equal to 4

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)
  • Liquid Crystal (AREA)

Abstract

Provided is a liquid crystal panel which can perform a colorless neutral display in all directions and has an excellent black luminance. The liquid crystal panel includes a liquid crystal cell (13), a first polarizer (14a), a second polarizer (14b), first optical compensation layers (11a, 11b), and a second optical compensation layer (12). The panel has at least two of the first optical compensation layers . The first polarizer (14a) is arranged at one side of the liquid crystal cell (13). The first optical compensation layer (11a) is arranged between the liquid crystal cell (13) and the first polarizer (14a). The second polarizer (14b) is arranged at the other side of the liquid crystal cell (13). The first optical compensation layer (11b) and the second optical compensation layer (12) are arranged between the liquid crystal cell (13) and the second polarizer (14b). The first optical compensation layers (11a, 11b) have an Nz coefficient and a wavelength dispersion which are smaller than those of the second optical compensation layer (12).
PCT/JP2008/059171 2007-06-08 2008-05-20 Liquid crystal panel and liquid crystal display device WO2008152885A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-152620 2007-06-08
JP2007152620 2007-06-08
JP2008-023160 2008-02-01
JP2008023160A JP2009015292A (en) 2007-06-08 2008-02-01 Liquid crystal panel and liquid crystal display device

Publications (1)

Publication Number Publication Date
WO2008152885A1 true WO2008152885A1 (en) 2008-12-18

Family

ID=40129497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059171 WO2008152885A1 (en) 2007-06-08 2008-05-20 Liquid crystal panel and liquid crystal display device

Country Status (1)

Country Link
WO (1) WO2008152885A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004326089A (en) * 2003-04-07 2004-11-18 Dainippon Printing Co Ltd Laminated phase difference layer, its manufacturing method and liquid crystal display device using phase difference layer
WO2007029788A1 (en) * 2005-09-09 2007-03-15 Nitto Denko Corporation Polarizing plate with optical compensation layer, liquid crystal panel using polarizing plate with optical compensation layer, and image display unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004326089A (en) * 2003-04-07 2004-11-18 Dainippon Printing Co Ltd Laminated phase difference layer, its manufacturing method and liquid crystal display device using phase difference layer
WO2007029788A1 (en) * 2005-09-09 2007-03-15 Nitto Denko Corporation Polarizing plate with optical compensation layer, liquid crystal panel using polarizing plate with optical compensation layer, and image display unit

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