TW201734582A - 包括反射背光式顯示器之鏡 - Google Patents

包括反射背光式顯示器之鏡 Download PDF

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TW201734582A
TW201734582A TW105141704A TW105141704A TW201734582A TW 201734582 A TW201734582 A TW 201734582A TW 105141704 A TW105141704 A TW 105141704A TW 105141704 A TW105141704 A TW 105141704A TW 201734582 A TW201734582 A TW 201734582A
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reflective
mirror
reflective polarizer
polarizer
display
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豐岡和彥
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３Ｍ新設資產公司
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
    • G—PHYSICS
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    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • G02F1/133553—Reflecting elements
    • 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
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
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    • G02B5/00—Optical elements other than lenses
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    • G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
    • G—PHYSICS
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    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
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    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
    • B60R2001/1215—Mirror assemblies combined with other articles, e.g. clocks with information displays
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133567—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the back side
    • G—PHYSICS
    • G02—OPTICS
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    • 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
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    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members

Abstract

描述一種包括反射背光式顯示器的鏡。具體而言，描述包括下列的鏡：背光顯示器，其具有一背光；一液晶單元，其包括設置於兩個相對透明基材層之間的一液晶層；一第一反射偏光器；以及一第二反射偏光器。該第一反射偏光器及該第二反射偏光器各直接層壓至該等相對透明基材層之一者。本文中描述的鏡可經組態為車輛後照鏡。

Description

包括反射背光式顯示器之鏡
鏡用於許多用途，包括用於安全、美觀、以及穿衣功能。鏡常用於車輛，以檢視一般在車輛後方的環境道路及交通狀況而不需回頭。背光式顯示器利用一空間光調變器以選擇性地傳送及吸收光。背光式顯示器可以彩色或單色顯示。
在一態樣中，本說明書係關於反射背光式顯示器。具體而言，本說明書係關於包括下列的反射背光式顯示器：一背光；一液晶單元，其包括設置於兩個相對透明基材層之間的一液晶層；一第一反射偏光器；以及一第二反射偏光器。該第一反射偏光器及該第二反射偏光器各直接相鄰於該等相對透明基材層之一者。
100‧‧‧後照鏡
110‧‧‧鏡部分
120‧‧‧反射背光式顯示器部分；光導
200‧‧‧反射背光式顯示器堆疊
210‧‧‧光源
220‧‧‧光導
230‧‧‧稜鏡膜
240‧‧‧第一反射偏光器
250‧‧‧液晶單元
260‧‧‧第二反射偏光器
圖1係一包括一反射背光式顯示器之後照鏡的前立視圖。
圖2係一反射背光式顯示器堆疊的側立視圖。
車輛的後照鏡，且具體而言中間(或內部)後照鏡可包括顯示器元件，以提供導航、狀態、安全、或其他資訊給駕駛人。將此資訊納入中間後照鏡可係特別有用，因為駕駛人不用將視線從車輛前面的路況及車況移開就可瞥見此類資訊。再者，駕駛人常態性本能地掃視該等鏡，駕駛人因而將可靠地看見鏡上顯示的重要資訊而不需適應看向新的或不尋常的地方。
習知的中間後照鏡顯示器藉由單純添加一氣相塗佈鏡(有時描述為半鏡或部分鏡或半反射器或部分反射器)在顯示器的正面上，來改裝習知的顯示器堆疊。此一改裝反射一些部分的環境光，產生一似鏡的外觀，但亦將來自習知顯示器堆疊之光的相同部分反射離開後照鏡之發光表面(觀看表面)，因為氣相塗佈鏡係一非取決於偏光之反射器。此反射損失係額外於一顯示器堆疊之習知損失：從正面吸收偏光器及背面吸收偏光器二者、以及液晶層。擁有似鏡外觀允許鏡之全部表面在顯示器未顯示資訊時可係有用或可觀看的。再者，似鏡外觀由於具有外觀均勻一致的後照鏡，在美觀上可係較佳的。
藉由以一反射偏光器置換至少正面吸收偏光器、以及在一些實例中以兩個反射偏光器置換正面及背面反射偏光器二者，該顯示器堆疊可將一部分鏡之環境光反射功能性併入而不需要額外的層。再者，以反射偏光器置換至少一吸收偏光器消除該堆疊之至少一些吸收元件。此等修改可使一反射背光顯示器具備比使用一習知顯示器堆疊的一反射背光較高的亮度及效率。
圖1係一包括一反射背光式顯示器之後照鏡的前立視圖。後照鏡100包括鏡部分110及反射背光式顯示器部分120，該反射背光式顯示器部分顯示資訊。鏡部分110及反射背光式顯示器部分120可具有相似的外觀。然而，反射背光式顯示器部分120可係能夠直接顯示所產生的資訊或影像，但鏡110則無法。在一些實施例中，鏡部分110可係後照鏡100的一小部分，例如表面積的40%、30%、或20%。在一些實施例中，鏡部分110可係後照鏡100的一較大部分，例如50%、60%、70%、80%、90%、或更多。在一些實施例中，該鏡部分可係該後照鏡之50%與90%之間。在一些實施例中，該顯示器部分可係該鏡部分之100%；換言之，該鏡部分及該顯示器部分可係相同的，且充滿該後照鏡之整個反射表面。後照鏡100在該鏡之邊界上或在附接零件上可包括其他元件、控制器、或指示器。
圖2係一反射背光式顯示器堆疊的側立視圖。反射背光式顯示器堆疊200包括光源210、光導220、稜鏡膜230、第一反射偏光器240、液晶單元250、及第二反射偏光器260。
光源210可係任何適合的光源或光源的組合。可使用習知光源，諸如發光二極體(LED)、冷陰極螢光燈(CCFL)，及甚至白熾燈泡。在一些實施例中，雖然在圖2中將各光源210描繪為單一物件，但是可使用(例如)LED之組合以提供足夠白的輸入光，但是，取決於應用，可利用任何適合的光譜或光譜組合。光源210可包括適合的注入光學元件或準直光學元件，以輔助耦合光至該結構化之光導中，或有助於成形該結構化光導之光輸入。將光源210設置於該光導 之一側或兩側上。兩側上的光源210可係相同或相似的光源，或者其等可係不同的。
光導220可係任何適合的大小及形狀，且可以任何適合的製程由任何適合的材料形成。舉例而言，光導220可係丙烯酸或聚碳酸酯。可由例如射出成形之一製程形成光導120。光導120具有至少一個輸入邊緣。該輸入邊緣一般係設置於光導最靠近該(等)光源的表面上。該輸入邊緣可具有任何適合的形狀或結構，包括使自該光源至該結構化光導中之光之耦合改善的結構。光導220亦具有一或多個用於光提取之特徵。可以任何適合的組態(包括一週期性圖案、一非週期性圖案、或一梯度)配置此等提取特徵。可以增進來自光導220之光輸出的區域均勻性的一圖案配置該等提取特徵。
稜鏡膜230在本文中所描述的構造中係可選的，但可透過光循環增進整體之正軸亮度。在此例子中，可使用一反射器(未圖示)將自稜鏡膜230透過在介於該等稜鏡膜小面與空氣之間處的介面之全內反射所反射回來之光，再次朝向反射背光式堆疊200之正面重導向(redirect)。可將該反射器塗佈至光導220上或該反射器可不存在，其中該反射背光式堆疊單純依賴來自該等稜鏡膜與光導之介面處的菲涅耳(Fresnel)反射。在一些實施例中，該反射器係一多層光學膜，例如增強鏡面反射器(Enhanced Specular Reflector(ESR))(可購自3M Company,St.Paul,Minn.)。
稜鏡膜230具有在一相同第一方向上延伸之複數個稜鏡。在一些實施例中，稜鏡膜230則可具有多重膜，其中至少一膜具 有在一第一方向上延伸之稜鏡且至少一膜具有在一第二方向上延伸之稜鏡，該第二方向正交於該第一方向。對於多重稜鏡膜，可將其等彼此層壓或可單純置於彼此之上。可以任何適合的製程(例如包括微複製)透過一連續澆注固化製程或類似者形成該等稜鏡膜。
稜鏡膜230之稜鏡可具有任何適合的幾何，包括夾角、底角、高度、節距、寬度、以及旋度--且此等參數之一或多者可沿著一稜鏡或者跨多個稜鏡而變異。稜鏡膜230可係例如增亮膜(Brightness Enhancing Film(BEF))(可購自3M Company,St.Paul,Minn.)。
將第一反射偏光器240及第二反射偏光器260設置於液晶層250之任一側。液晶單元250一般包括一層液晶，該層液晶夾在兩層玻璃或另一透明基材間。該等反射偏光器可均相鄰於該透明基材，或可將該等反射偏光器之一或二者直接層壓至該液晶單元之玻璃或透明基材。可使用執行層壓。或者，可將該等反射偏光器之僅一者(或甚至兩者均不)直接層壓至該液晶單元之玻璃或透明基材。
第一反射偏光器240可係任何適合的反射類型偏振器。在一些實施例中，該反射偏光器可係一經定向多層聚合光膜，例如DBEF或APF反射偏光器(可購自3M Company,St.Paul.,Minn.)。在一些實施例中，反射偏光器係一線柵或膽固醇型偏光器。在此等實施例之一些中，反射偏光器可包括一或多個延遲或補償層(例如一四分之一波板)以在線性偏光、與圓或橢圓偏光之間轉換。第一反射偏光器240可具有任何適合之厚度；在一多層光學膜的例子中，反射偏 光器可係一較厚的多封包或經層壓構造，或一相對較薄的單一封包構造。第二反射偏光器260可係與第一反射偏光器240完全相同的，或其等可係相似的。在一些實施例中，第一反射偏光器240及第二反射偏光器260可具有一些或許多不同的特性。在一些實施例中，可將一額外的反射偏光器或多個反射偏光器設置於該第一反射偏光器及該第二反射偏光器之一或二者上。換言之，該之各側上可有二或更多個反射偏光器
第一反射偏光器240及第二反射偏光器260經組態以允許液晶單元250藉由選擇性地閘控光來操作。取決於液晶單元250中使用之液晶材料的類型(例如，扭轉向列型、超扭轉向列型……等等)以及該液晶單元之電驅動的方式，該等反射偏光器之通過軸應經組態以使對於在一「開通」狀態中(即，在該液晶單元之一像素兩端產生一電壓差的一狀態中)的一像素，來自該光源的光實質上行進穿過該第二反射偏光器、或者其實質上未傳送穿過該第二反射偏光器，而對於在一「關斷」狀態中(即，在該液晶單元之該像素兩端無電壓差的一狀態中)的一像素，以相反的方式處理來自該光源的光。對某些類型的液晶單元，中間態係可能的。在一些實施例中，此可係反射偏光器之通過軸的一平行配置，或該等反射偏光器之該等通過軸的一正交配置。任何適合的驅動電子器件、導電層、或薄膜電晶體(TFT)可包括或併入或包括於液晶單元250。
實例
修改用於一SONY VAIO PCG-572N(可購自Sony Corp.,Tokyo,Japan)筆記型電腦之液晶顯示器，該修改方式係移除經層壓至液晶單元之玻璃之任一側的吸收偏光器之僅一半。在移除該顯示器之一半上的吸收偏光器之後，以3M APF-T35 Reflective Polarizer(可購自3M Company,St.Paul,Minn.)置換該等吸收偏光器至該玻璃。置換該液晶顯示器，並在「開通」(顯示一影像)及「關斷」(未顯示影像)狀態二者下觀察該液晶顯示器。該液晶顯示器之經修改部分作用為一反射背光式顯示器，其在該顯示器關斷時作用為一鏡，並在該顯示器開通時顯示一可檢視影像。相較於該顯示器作為參照的那一半，效能係可接受的，尤其考量到該參照顯示器會進一步需要一氣相塗佈部分鏡以作用為一反射背光式顯示器。
以下為本揭露之例示性實施例：
項目1.一種反射背光式顯示器，其包含：一背光；一液晶單元，其包括設置於兩個相對透明基材層之間的一液晶層；一第一反射偏光器；以及一第二反射偏光器；其中該第一反射偏光器及該第二反射偏光器各直接相鄰於該等相對透明基材層之一者。
項目2.如項目1之反射背光式顯示器，其中該第一反射偏光器或該第二反射偏光器之至少一者係一多層反射偏光器。
項目3.如項目1之反射背光式顯示器，其中該第一反射偏光器或該第二反射偏光器之各者係一多層反射偏光器。
項目4.如項目3之反射背光式顯示器，其中該兩個透明基材層係玻璃。
項目5.如項目1之反射背光式顯示器，其中該第一反射偏光器及該第二反射偏光器各直接層壓至該等相對透明基材層之一者。
項目6.如項目1之反射背光式顯示器，其中該背光包括：一光導；一反射器，其設置於該光導上；以及一光源，其經組態以將光注入該光導中。
項目7.如項目1之反射背光式顯示器，其進一步包含一第三反射偏光器，其中該第三反射偏光器設置於該第一反射偏光器或該第二反射偏光器上。
項目8.一種鏡，其包含：一鏡部分；以及一反射背光式顯示器部分，其包含如項目1之反射背光式顯示器；其中該反射背光式顯示器能夠直接顯示影像，而該鏡部分則否。
項目9.一種車輛，其包含如項目8之鏡，該鏡經組態為一後照鏡。
項目10.如項目9之鏡，其中該反射背光式顯示器部分係大於該鏡之一面積的10%但小於該面積的50%。
項目11.如項目1之反射背光式顯示器，其中該反射背光式顯示器不包括吸收偏光器。
項目12.如項目1之反射背光式顯示器，其中該反射背光式顯示器不包括非取決於偏光之部分反射器。
100‧‧‧後照鏡
110‧‧‧鏡部分
120‧‧‧反射背光式顯示器部分；光導

Claims (12)

  1. 一種反射背光式顯示器，其包含：一背光；一液晶單元，其包括設置於兩個相對透明基材層之間的一液晶層；一第一反射偏光器；以及一第二反射偏光器；其中該第一反射偏光器及該第二反射偏光器各直接相鄰於該等相對透明基材層之一者。
  2. 如請求項1之反射背光式顯示器，其中該第一反射偏光器或該第二反射偏光器之至少一者係一多層反射偏光器。
  3. 如請求項1之反射背光式顯示器，其中該第一反射偏光器或該第二反射偏光器之各者係一多層反射偏光器。
  4. 如請求項3之反射背光式顯示器，其中該兩個透明基材層係玻璃。
  5. 如請求項1之反射背光式顯示器，其中該第一反射偏光器及該第二反射偏光器各直接層壓至該等相對透明基材層之一者。
  6. 如請求項1之反射背光式顯示器，其中該背光包括：一光導；一反射器，其設置於該光導上；以及一光源，其經組態以將光注入該光導中。
  7. 如請求項1之反射背光式顯示器，其進一步包含一第三反射偏光器，其中該第三反射偏光器係設置於該第一反射偏光器或該第二反射偏光器上。
  8. 一種鏡，其包含：一鏡部分；以及一反射背光式顯示器部分，其包含如請求項1之反射背光式顯示器； 其中該反射背光式顯示器能夠直接顯示影像，而該鏡部分則否。
  9. 一種車輛，其包含如請求項8之鏡，該鏡經組態為一後照鏡。
  10. 如請求項9之鏡，其中該反射背光式顯示器部分係大於該鏡之一面積的10%但小於該面積的50%。
  11. 如請求項1之反射背光式顯示器，其中該反射背光式顯示器不包括吸收偏光器。
  12. 如請求項1之反射背光式顯示器，其中該反射背光式顯示器不包括非取決於偏光之部分反射器。
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