WO2012133140A1 - Dispositif d'affichage à cristaux liquides - Google Patents

Dispositif d'affichage à cristaux liquides Download PDF

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Publication number
WO2012133140A1
WO2012133140A1 PCT/JP2012/057435 JP2012057435W WO2012133140A1 WO 2012133140 A1 WO2012133140 A1 WO 2012133140A1 JP 2012057435 W JP2012057435 W JP 2012057435W WO 2012133140 A1 WO2012133140 A1 WO 2012133140A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
birefringent layer
type
coefficient
nzq
Prior art date
Application number
PCT/JP2012/057435
Other languages
English (en)
Japanese (ja)
Inventor
彰 坂井
Original Assignee
シャープ株式会社
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 シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2012133140A1 publication Critical patent/WO2012133140A1/fr

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    • 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
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
    • 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
    • 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
    • G02F2413/06—Two plates on one side of the 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
    • 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

Abstract

La présente invention se rapporte à un dispositif d'affichage à cristaux liquides qui peut réduire les coûts, présente une excellente productivité et peut également obtenir un rapport de contraste élevé dans une large plage d'angles de vision. Selon la présente invention, le dispositif d'affichage à cristaux liquides est pourvu, dans l'ordre suivant : d'un premier polariseur; d'une première couche biréfringente de second type (nx < ny ≤ nz); d'une première plaque λ/4 (nx > ny ≥ nz); d'une cellule à cristaux liquides; d'une seconde plaque λ/4 qui présente un coefficient Nz qui est sensiblement similaire à celui de la première plaque λ/4; d'une seconde couche biréfringente de second type; et d'un second polariseur. L'axe lent en plan de la première plaque λ/4 forme un angle sensiblement de 45° par rapport à l'axe d'absorption du premier polariseur. L'axe lent en plan de la seconde plaque λ/4 est sensiblement perpendiculaire à l'axe lent en plan de la première plaque λ/4. L'axe d'absorption du second polariseur est sensiblement perpendiculaire à l'axe d'absorption du premier polariseur. L'axe lent en plan de la première couche biréfringente de second type est sensiblement perpendiculaire à l'axe d'absorption du premier polariseur. L'axe lent en plan de la seconde couche biréfringente de second type est sensiblement perpendiculaire à l'axe d'absorption du second polariseur. Les molécules de cristaux liquides dans une couche de cristaux liquides sont orientées sensiblement de façon verticale à une surface de substrat. Ainsi, un affichage noir est réalisé.
PCT/JP2012/057435 2011-03-31 2012-03-23 Dispositif d'affichage à cristaux liquides WO2012133140A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011080127 2011-03-31
JP2011-080127 2011-03-31

Publications (1)

Publication Number Publication Date
WO2012133140A1 true WO2012133140A1 (fr) 2012-10-04

Family

ID=46930866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/057435 WO2012133140A1 (fr) 2011-03-31 2012-03-23 Dispositif d'affichage à cristaux liquides

Country Status (2)

Country Link
TW (1) TW201248271A (fr)
WO (1) WO2012133140A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009223279A (ja) * 2008-02-20 2009-10-01 Fujifilm Corp 液晶表示装置
WO2011013399A1 (fr) * 2009-07-30 2011-02-03 シャープ株式会社 Dispositif d'affichage à cristaux liquides

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009223279A (ja) * 2008-02-20 2009-10-01 Fujifilm Corp 液晶表示装置
WO2011013399A1 (fr) * 2009-07-30 2011-02-03 シャープ株式会社 Dispositif d'affichage à cristaux liquides

Also Published As

Publication number Publication date
TW201248271A (en) 2012-12-01

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