TWI592724B - Dimming film - Google Patents
Dimming film Download PDFInfo
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- TWI592724B TWI592724B TW105127880A TW105127880A TWI592724B TW I592724 B TWI592724 B TW I592724B TW 105127880 A TW105127880 A TW 105127880A TW 105127880 A TW105127880 A TW 105127880A TW I592724 B TWI592724 B TW I592724B
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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
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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
Description
本發明係有關於一種調光薄膜，可利用於例如貼附於窗上，控制外來光透過的電子百葉窗等。 The present invention relates to a light-adjusting film which can be used, for example, for attaching to a window, controlling an electronic louver for transmitting external light, and the like.
從前，提案有各種有關於例如貼附於窗上，控制外來光透過的調光薄膜(專利文獻1、2)。這種調光薄膜之一種為利用液晶之物。該利用液晶的調光薄膜，其藉由製作有透明電極的透明薄膜材來夾持液晶材料，形成液晶單元，再利用線偏光板夾持該液晶單元來作成。藉此該調光薄膜，藉由改變施加至液晶的電場，使液晶的配向改變，來遮蔽或透過外來光、或改變透過光量，藉此控制外來光的透過。 In the past, there have been various proposals for a light-adjusting film which is attached to a window and controls the transmission of external light (Patent Documents 1 and 2). One of such dimming films is a material that utilizes liquid crystals. In the light-adjusting film using a liquid crystal, a liquid crystal material is sandwiched by a transparent film material having a transparent electrode to form a liquid crystal cell, and the liquid crystal cell is sandwiched by a linear polarizing plate. Thereby, the light-adjusting film controls the transmission of the external light by changing the electric field applied to the liquid crystal to change the alignment of the liquid crystal to shield or transmit the external light or to change the amount of transmitted light.
不過這種調光薄膜，期望能比從前更能降低在遮光時的透過率，並更確實地遮蔽透過光。 However, such a light-adjusting film is expected to lower the transmittance at the time of light-shielding and to more reliably shield the transmitted light than before.
[專利文獻1]JP H03-47392 A [Patent Document 1] JP H03-47392 A
[專利文獻2]JP H08-184273 A [Patent Document 2] JP H08-184273 A
本發明有鑑於以上的狀況，其目的為提供一種調光薄膜，與從前相比更能確實地遮蔽透過光。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a light control film which can more reliably shield transmitted light than before.
本發明者們為了解決上述課題而進行研究，發現在液晶層的兩側，藉由配置使光軸(遲相軸方向)垂直的透明薄膜，能排除該透明薄膜所導致的相位差影響，降低遮光時的透過率，因而完成本發明。此外，在這裡的遲相軸為：在具有折射率異向性的材料中，使折射率為最大的方向。 In order to solve the above problems, the inventors of the present invention have found that by arranging a transparent film having an optical axis (lattic axis direction) perpendicular to both sides of the liquid crystal layer, the influence of the phase difference caused by the transparent film can be eliminated and the effect can be reduced. The transmittance at the time of light shielding, thus completing the present invention. Further, the slow phase axis here is a direction in which the refractive index is maximized in a material having refractive index anisotropy.
具體來說，本發明提供了以下的內容。 Specifically, the present invention provides the following contents.
(1)一種調光薄膜，具有：在透明薄膜材所形成的基材上至少設有配向層的夾持液晶層之第1及第2層積體；其中，在前述第1及第2層積體的與前述液晶層相反側的面上，具備線偏光板之光學機能層；藉由驅動設於前述第1及/或第2層積體的透明電極，來控制前述液晶層所關連的液晶的配光，以控制透過光；前述第1及第2層積體的基材的遲相軸互相垂直；前述透明薄膜材為：聚碳酸酯薄膜、COP薄膜的其中之一。 (1) A light-adjusting film comprising: first and second laminates having a liquid crystal layer sandwiched between at least an alignment layer provided on a substrate formed of a transparent film material; wherein the first layer and the second layer are An optical function layer of a linear polarizing plate is provided on a surface of the integrated body opposite to the liquid crystal layer; and the liquid crystal layer is controlled by driving a transparent electrode provided on the first and/or second laminate The light distribution of the liquid crystal controls the transmitted light; the retardation axes of the base materials of the first and second laminates are perpendicular to each other; and the transparent film material is one of a polycarbonate film and a COP film.
根據本發明，有關調光薄膜，與從前相比更能確實地遮蔽透過光。 According to the present invention, the light-adjusting film can more reliably shield the transmitted light than before.
1‧‧‧調光薄膜 1‧‧‧Dimming film
2、3‧‧‧線偏光板 2, 3‧‧‧ line polarizer
2A、3A‧‧‧相位差薄膜 2A, 3A‧‧‧ phase difference film
4‧‧‧液晶單元 4‧‧‧Liquid Crystal Unit
5D‧‧‧下側層積體 5D‧‧‧lower laminate
5U‧‧‧上側層積體 5U‧‧‧Upper laminate
6、15‧‧‧基材 6, 15‧‧‧ substrate
8‧‧‧液晶層 8‧‧‧Liquid layer
11、16‧‧‧透明電極 11, 16‧‧‧ transparent electrode
12‧‧‧間隙物 12‧‧‧Interval
13、17‧‧‧配向層 13, 17‧‧‧ Alignment layer
19‧‧‧密封材 19‧‧‧ Sealing material
[圖1]表示有關本發明的第1實施形態的調光薄膜的斷面圖。 Fig. 1 is a cross-sectional view showing a light control film according to a first embodiment of the present invention.
[圖2]為了說明圖1的調光薄膜的詳細構成所提供的圖。 FIG. 2 is a view for explaining a detailed configuration of the light control film of FIG. 1. FIG.
[圖3]為了說明圖1的調光薄膜的其他詳細構成所提供的圖。 FIG. 3 is a view for explaining another detailed configuration of the light control film of FIG. 1. FIG.
[圖4]為了說明圖1的調光薄膜的比較例所提供的圖。 FIG. 4 is a view for explaining a comparative example of the light control film of FIG. 1. FIG.
[圖5]為了說明圖1的調光薄膜的其他比較例所提供的圖。 FIG. 5 is a view for explaining another comparative example of the light control film of FIG. 1. FIG.
[圖6]為了說明圖1的調光薄膜的製造工程所提供的圖。 Fig. 6 is a view for explaining the manufacturing process of the light-adjusting film of Fig. 1 .
圖1表示有關本發明的第1實施形態的調光薄膜的斷 面圖。該調光薄膜1係在建築物的窗玻璃、展示櫃、屋內的透明隔間等的為了調光的部位，藉由貼附黏著劑層等，改變所施加的電壓以控制透過光的光量。 Fig. 1 shows the break of the light control film according to the first embodiment of the present invention. Surface map. The light-adjusting film 1 is a light-shielding portion such as a window glass of a building, a display cabinet, or a transparent partition in a house, and the amount of light transmitted is changed by attaching an adhesive layer or the like to change the applied voltage. .
該調光薄膜1為利用液晶控制透過光的薄膜材，藉由線偏光板2、3來夾持調光薄膜用的液晶單元4來構成。在這裡的線偏光板2、3，係經由在聚乙烯醇(PVA)內含浸碘等後，將其延伸形成作為線偏光板的實現光學機能的光學機能層，再用TAC(三醋酸纖維素)等透明薄膜材所形成的基材來夾持光學機能層製作而成。線偏光板2、3通過正交偏光配置，藉由紫外線硬化性樹脂等的黏接劑層，來配置於液晶單元4。此外，雖然線偏光板2、3在各自的液晶單元4側設置提供光學補償的相位差薄膜2A、3A，但可以因應所需省略相位差薄膜2A、3A。 The light-adjusting film 1 is a film material for controlling transmitted light by liquid crystal, and is configured by sandwiching the liquid crystal cell 4 for a light-adjusting film by the linear polarizing plates 2 and 3. Here, the linear polarizing plates 2 and 3 are formed by embedding iodine or the like in polyvinyl alcohol (PVA), and then extending them to form an optical functional layer for realizing optical function as a linear polarizing plate, and then using TAC (cellulose triacetate). A substrate formed of a transparent film material is formed by sandwiching an optical functional layer. The linear polarizing plates 2 and 3 are disposed in the liquid crystal cell 4 by an adhesive layer such as an ultraviolet curable resin by orthogonally polarized light. Further, although the linear polarizing plates 2 and 3 are provided with retardation films 2A and 3A for providing optical compensation on the respective liquid crystal cells 4 side, the retardation films 2A and 3A may be omitted as necessary.
液晶單元4經由向後述透明電極施加電壓，來控制透過光的偏光面。藉此調光薄膜1以能夠控制透過光的各種調光方式來構成。 The liquid crystal cell 4 controls the polarizing surface of the transmitted light by applying a voltage to a transparent electrode to be described later. Thereby, the light-adjusting film 1 is configured by various dimming methods capable of controlling transmitted light.
液晶單元4係藉由以薄膜形狀所形成的第1及第2層積體即上側層積體5U及下側層積體5D，來夾持液晶層8所構成。下側層積體5D係由在透明薄膜材所形成的基材6，製作透明電極11、間隙物12、配向層13來形成。上側層積體5U係由在透明薄膜材所形成的基材15，層積透 明電極16、配向層17來形成。液晶單元4，藉由驅動設置於該上側層積體5U及下側層積體5D的透明電極11、16，以TN(Twisted Nematic)方式控制設於液晶層8的液晶材料之配向，藉此控制透過光的偏光面。 The liquid crystal cell 4 is constituted by sandwiching the liquid crystal layer 8 by the upper laminate 5U and the lower laminate 5D which are first and second laminates formed in a film shape. The lower laminate 5D is formed by forming the transparent electrode 11, the spacer 12, and the alignment layer 13 from the substrate 6 formed of a transparent film material. The upper laminate 5U is laminated on the substrate 15 formed of a transparent film material. The bright electrode 16 and the alignment layer 17 are formed. The liquid crystal cell 4 controls the alignment of the liquid crystal material provided in the liquid crystal layer 8 by TN (Twisted Nematic) by driving the transparent electrodes 11 and 16 provided on the upper layered body 5U and the lower layered body 5D. Control the polarized surface of the transmitted light.
此外，也可以適用VA(Vertical Alignment)方式、IPS(In-Plane-Switching)方式等的驅動方式來取代TN方式。此外，藉由IPS方式來驅動時，上側層積體5U或下側層積體5D的透明電極11或16的任一者可以省略，藉由另一方的透明電極圖案化來向液晶材料施加驅動用的電場。 Further, a driving method such as a VA (Vertical Alignment) method or an IPS (In-Plane-Switching) method may be applied instead of the TN method. In addition, when driven by the IPS method, any of the transparent electrodes 11 or 16 of the upper laminate 5U or the lower laminate 5D can be omitted, and the other transparent electrode can be patterned to apply driving to the liquid crystal material. Electric field.
雖然基材6、15能夠在該種薄膜材適用各種的透明薄膜材，但較佳為適用光學異向性較小的薄膜材。在該實施形態中，雖然基材6、15適用聚碳酸酯薄膜，但也適用COP(環烯烴聚合物)薄膜等。 Although the base materials 6 and 15 can apply various transparent film materials to such a film material, it is preferable to use a film material having a small optical anisotropy. In this embodiment, the base material 6 and 15 are made of a polycarbonate film, but a COP (cycloolefin polymer) film or the like is also used.
透明電極11、16能夠使用適用於該種薄膜材的各種電極材料，在該實施形態中係由ITO(Indium Tin Oxide)的透明電極材來形成。間隙物12係用來設定液晶層8的厚度，雖能廣泛適用各種樹脂材料，在該實施形態中係由光阻來製作，在製作有透明電極11的基材6之上，藉由塗佈光阻，經曝光、顯影來製作。此外，間隙物12可以設於上側層積體5U，也可以設於上側層積體5U及下側層積體5D的兩方。 As the transparent electrodes 11 and 16, various electrode materials suitable for the film materials can be used. In this embodiment, they are formed of a transparent electrode material of ITO (Indium Tin Oxide). The spacer 12 is used to set the thickness of the liquid crystal layer 8, and is widely applicable to various resin materials. In this embodiment, it is made of photoresist, and is coated on the substrate 6 on which the transparent electrode 11 is formed. Photoresist, produced by exposure and development. Further, the spacer 12 may be provided on the upper laminate 5U or on both the upper laminate 5U and the lower laminate 5D.
配向層13、17經由將聚醯亞胺樹脂層施予磨擦處理而製作。此外，配向層13、17可以適用於發現對 液晶層8的液晶材料具有配向控制力的各種構成，可以由所謂的光配向層來製作，也可以經由磨擦處理、研磨處理所形成的微細線狀凹凸形狀的賦型處理來製作形成。此外，間隙物12也可以設於配向層13之上。 The alignment layers 13 and 17 are produced by applying a polyimide resin layer to a rubbing treatment. In addition, the alignment layers 13, 17 can be adapted to find pairs The liquid crystal material of the liquid crystal layer 8 has various configurations of the alignment control force, and may be formed of a so-called photoalignment layer, or may be formed by a shaping treatment of a fine linear concavo-convex shape formed by a rubbing treatment or a polishing treatment. Further, the spacers 12 may be provided on the alignment layer 13.
此外，光配向材料雖然可以適用各種能達到光配向的各種材料，但該實施形態中，使用一旦經配向之後，藉由紫外光的照射也不會改變配向的材料，例如光二聚化型材料。有關該光二聚化型的材料，揭示於「M．Schadt，K．Schmitt，V．Kozinkov and V．Chigrinov：Jpn．J．Appl．Phys．，31，2155(1992)」、「M．Schadt，H．Seiberle and A．Schuster：Nature，381，212(1996)」等。 Further, although the optical alignment material can be applied to various materials capable of achieving light alignment, in this embodiment, a material which does not change the alignment by irradiation of ultraviolet light, such as a photodimerization type material, is used once it is aligned. A material relating to the photodimerization type is disclosed in "M. Schadt, K. Schmitt, V. Kozinkov and V. Chigrinov: Jpn. J. Appl. Phys., 31, 2155 (1992)", "M. Schadt, H. Seiberle and A. Schuster: Nature, 381, 212 (1996) and the like.
液晶層8可以廣泛適用該種調光薄膜所適用的各種液晶材料。此外液晶單元4為了圍住液晶層8而配置密封材19，藉由該密封材19將上側層積體5U、下側層積體5D一體固定，來防止液晶材料漏出。 The liquid crystal layer 8 can be widely applied to various liquid crystal materials to which the dimming film is applied. Further, in order to surround the liquid crystal layer 8, the liquid crystal cell 4 is provided with a sealing material 19, and the upper laminated body 5U and the lower laminated body 5D are integrally fixed by the sealing member 19 to prevent leakage of the liquid crystal material.
圖2為說明調光薄膜1中的基材6、15的配置所提供的圖。在調光薄膜1中，同一材料、厚度所形成的透明薄膜材適用於基材6、15，並以光軸L1垂直的方式配置基材6、15。在這裡，該光軸L1的垂直誤差範圍包含量測誤差、製造誤差等，使2個光軸L1的夾角在90度±5度以內，但從遮光時能在實用上充分抑制透過率的觀點來看，較佳為在90度±2度以內，更佳為在90度±1度以 內。此外，基材的厚度因為具有偏差，將同一薄膜材適用於基材6、15時，基材15的厚度為基材6的厚度±10μm，但從遮光時能在實用上充分抑制透過率的觀點來看，基材15的厚度較佳為基材6的厚度±10μm，更佳為基材15的厚度為基材6的厚度±5μm。藉此，在調光薄膜1中，使基材6、15的面內相位差相等，使施加至通過基材6的透過光的相位差，與施加至通過基材15的透過光的相位差抵消，降低遮光時的透過率(所謂的黑透過率)。藉此，調光薄膜1，與從前相比更能確實地遮蔽透過光。 FIG. 2 is a view for explaining the arrangement of the substrates 6, 15 in the light-adjusting film 1. In the light-adjusting film 1, a transparent film material formed of the same material and thickness is applied to the substrates 6, 15 and the substrates 6, 15 are arranged such that the optical axis L1 is perpendicular. Here, the vertical error range of the optical axis L1 includes a measurement error, a manufacturing error, and the like, so that the angle between the two optical axes L1 is within 90 degrees ± 5 degrees, but the viewpoint of sufficiently suppressing the transmittance from the viewpoint of practically shielding from light shielding Preferably, it is within 90 degrees ± 2 degrees, more preferably at 90 degrees ± 1 degree. Inside. Further, when the thickness of the base material is varied, when the same film material is applied to the base materials 6 and 15, the thickness of the base material 15 is ±10 μm of the thickness of the base material 6, but the transmittance can be sufficiently suppressed practically from light shielding. From the viewpoint, the thickness of the substrate 15 is preferably ±10 μm of the thickness of the substrate 6, and more preferably the thickness of the substrate 15 is ±5 μm of the thickness of the substrate 6. Thereby, in the light-adjusting film 1, the in-plane phase difference of the substrates 6 and 15 is made equal, and the phase difference between the transmitted light applied to the substrate 6 and the transmitted light passing through the substrate 15 is made. Offset, reducing the transmittance at the time of shading (so-called black transmittance). Thereby, the light-adjusting film 1 can more reliably shield the transmitted light than before.
也就是說，如同該實施形態的方式，在將以正交偏光配置的線偏光板2、3配置於液晶單元4的兩側，控制液晶單元4的透過光的偏光面，來控制透過光的構成中，當液晶單元4的基材6、15具備光學異向性時，液晶層8的入射光會因基材6、15的光學異向性，成為橢圓偏光入射液晶層8。其結果，在對任何透明電極11、16未施加電壓的狀態下(對液晶層8無電場時)，包含出射側線偏光板的透過軸方向成份的透過光會從液晶層8出射，藉此能夠充分地降低透過率。藉此在該等調光薄膜中，對基材6、15能適用光學異向性充分小的透明薄膜材。具體來說，基材6、15適用聚碳酸酯薄膜等，該聚碳酸酯薄膜會使面內相位差成為10nm的極小程度。 In other words, as in the embodiment, the linear polarizing plates 2 and 3 arranged in the orthogonal polarization are disposed on both sides of the liquid crystal cell 4, and the polarizing surface of the transmitted light of the liquid crystal cell 4 is controlled to control the transmitted light. In the configuration, when the substrates 6 and 15 of the liquid crystal cell 4 have optical anisotropy, the incident light of the liquid crystal layer 8 enters the liquid crystal layer 8 due to the optical anisotropy of the substrates 6 and 15. As a result, in a state where no voltage is applied to any of the transparent electrodes 11 and 16 (when there is no electric field to the liquid crystal layer 8), the transmitted light including the component in the transmission axis direction of the exit side polarizing plate is emitted from the liquid crystal layer 8, whereby Fully reduce the transmission rate. Thus, in the light-adjusting films, a transparent film material having sufficiently small optical anisotropy can be applied to the substrates 6 and 15. Specifically, the base materials 6 and 15 are made of a polycarbonate film or the like which has an in-plane retardation of 10 nm.
但根據各種實驗結果，即便是這種光學異向性很小的透明薄膜材，這種小的面內相位差會使遮光時的 透過率增加，而且該透過率的增加已無可忽視。 However, according to various experimental results, even in such a transparent film having a small optical anisotropy, such a small in-plane phase difference causes shading. The transmission rate has increased, and the increase in transmission rate has not been neglected.
但是，如這種實施形態的方式，將同一材料、膜厚的透明薄膜材所形成的基材6、15，以光軸L1垂直的方式配置時，能夠使施加於入射側基材的透過光的相位差，與出射側的基材的相位差抵消，藉此能夠更進一步降低遮光時的透過率。具體來說，將面內相位差為10nm的基材以光軸平行的方式配置時，相對遮光時的透過率為2%左右，將該基材以光軸垂直的方式配置時，能夠時遮光時的透過率成為0.2%左右，因此與光軸平行配置的情形相比，能夠使透過率降低到1/10。 However, in the embodiment of the embodiment, when the substrates 6 and 15 formed of the transparent material of the same material and the film thickness are arranged such that the optical axis L1 is perpendicular, the transmitted light applied to the incident side substrate can be made. The phase difference is offset from the phase difference of the substrate on the exit side, whereby the transmittance at the time of light shielding can be further reduced. Specifically, when the substrate having the in-plane retardation of 10 nm is arranged such that the optical axis is parallel, the transmittance at the time of light shielding is about 2%, and when the substrate is arranged such that the optical axis is perpendicular, the light can be shielded. Since the transmittance at the time is about 0.2%, the transmittance can be reduced to 1/10 as compared with the case where the optical axis is arranged in parallel.
而且在該實施形態中，在調光薄膜1中，層積於基材6、15的線偏光板3、2相對該基材6、15的光軸L1，分別以透過軸L2方向平行的方式設定，但線偏光板3、2可以藉由正交偏光配置以對應配向層13、17所導致的液晶材料配向方向，可以對基材6、15的光軸L1配置各種面向。 Further, in this embodiment, in the light-adjusting film 1, the linear polarizing plates 3 and 2 laminated on the substrates 6 and 15 are parallel to the optical axis L1 of the substrates 6 and 15 in the direction of the transmission axis L2. Although the linear polarizing plates 3 and 2 can be arranged in the orthogonal polarizing arrangement to correspond to the alignment direction of the liquid crystal material caused by the alignment layers 13 and 17, various faces can be disposed on the optical axis L1 of the substrates 6 and 15.
在兩面製作硬塗層而成的厚度100μm的聚碳酸酯薄膜材，將其適用於基材6、15，利用上述第1實施形態的構成製作調光薄膜。此外省略相位差薄膜2A、3A。基材6、15、及線偏光板2、3的配置為圖2中的上述傾斜配置。在該實施例1中，無電場時，透過率為0.2%，可以 確認在遮光時能夠遮蔽透過光。 A polycarbonate film material having a thickness of 100 μm obtained by forming a hard coat layer on both surfaces was applied to the substrates 6 and 15, and a light-adjusting film was produced by the configuration of the first embodiment. Further, the retardation films 2A and 3A are omitted. The arrangement of the substrates 6, 15 and the linear polarizing plates 2, 3 is the above-described inclined arrangement in Fig. 2 . In the first embodiment, when there is no electric field, the transmittance is 0.2%. It is confirmed that the transmitted light can be blocked when the light is blocked.
實施例2如圖3所示，線偏光板2、3的透過軸L2相對基材15、6的光軸L1以45度的夾角配置。此外，藉由在該實施例2中，配向層13、17相對基材6、15的光軸L1，在傾斜45度的方向設定磨擦方向。在該實施例2中，除了該線偏光板2、3的配置不同以外，與實施例1為同一構成。即使是在該實施例2中，無電場時，透過率為0.2%，可以確認在遮光時能夠遮蔽透過光。 In the second embodiment, as shown in FIG. 3, the transmission axis L2 of the linear polarizing plates 2 and 3 is arranged at an angle of 45 degrees with respect to the optical axis L1 of the substrates 15 and 6. Further, in the second embodiment, the alignment layers 13 and 17 set the rubbing direction in the direction inclined by 45 degrees with respect to the optical axis L1 of the substrates 6 and 15. In the second embodiment, the configuration is the same as that of the first embodiment except that the arrangement of the linear polarizing plates 2 and 3 is different. Even in the second embodiment, when there was no electric field, the transmittance was 0.2%, and it was confirmed that the transmitted light can be blocked at the time of light shielding.
比較例1如圖4所示，除了基材6、15的光軸L1以平行配置以外，與實施例1為同一構成。在該比較例1中，無電場時，透過率為2.0%，可以確認透過率過高。 In Comparative Example 1, as shown in FIG. 4, the optical axis L1 of the substrates 6 and 15 was arranged in parallel, and the configuration was the same as that of the first embodiment. In Comparative Example 1, when there was no electric field, the transmittance was 2.0%, and it was confirmed that the transmittance was too high.
實施例2如圖5所示，除了基材6、15的光軸L1以平行配置以外，與實施例2為同一構成。在該比較例2中，無電場時，透過率為2.0%，可以確認透過率過高。 As shown in Fig. 5, the second embodiment has the same configuration as that of the second embodiment except that the optical axes L1 of the substrates 6 and 15 are arranged in parallel. In Comparative Example 2, when there was no electric field, the transmittance was 2.0%, and it was confirmed that the transmittance was too high.
圖6為表示調光薄膜的製造工程的流程圖。該製造工程在電極製作工程SP2中，適用光微影法，在基材6、15 之上分別製作透明電極11、16。再來在接下來的間隙物製作工程SP3中，在基材6製作光阻膜後，經由曝光、顯影處理，藉此製作間隙物12。接下來的製造工程在配向層製作工程SP4中，在製作有間隙物12的基材6之上，或製作有透明電極16的基材15之上，經由塗佈聚醯亞胺樹脂層的塗佈液之後，經由乾燥、加熱處理，藉此製作聚醯亞胺膜。此外，將該聚醯亞胺膜作磨擦處理，藉此製作配向層13、17。 Fig. 6 is a flow chart showing the manufacturing process of the light control film. The manufacturing process is applied to the electrode fabrication project SP2, which is suitable for the photolithography method on the substrate 6, 15 Transparent electrodes 11, 16 are separately formed on the top. Further, in the next spacer production project SP3, after the photoresist film is formed on the substrate 6, the spacers 12 are formed by exposure and development processing. The subsequent manufacturing process is carried out in the alignment layer fabrication project SP4 on the substrate 6 on which the spacer 12 is formed, or on the substrate 15 on which the transparent electrode 16 is formed, by coating the polyimide layer with the polyimide film. After the cloth liquid is passed through a drying and heat treatment, a polyimide film is produced. Further, the polyimide film was subjected to a rubbing treatment to thereby produce alignment layers 13 and 17.
此外，接著該製造工程，在密封工程SP5中，在製作配向層13而成的基材6上，使用點膠機以框狀塗佈密封材後，在藉由該框形狀所包圍的預定位置，使用點膠機來滴下有關液晶層8的液晶材料。之後，該製造工程在層積基材6、15後，經由按壓並加熱，藉此夾持液晶層8，使上側層積體5U及下側層積體5D藉由貼合密封材19來一體化，製作調光薄膜1。 Further, in the manufacturing process, in the sealing process SP5, on the base material 6 on which the alignment layer 13 is formed, the sealing material is applied in a frame shape using a dispenser, and then the predetermined position surrounded by the frame shape is used. A liquid dispenser is used to drip the liquid crystal material related to the liquid crystal layer 8. After that, the manufacturing process is performed by laminating and heating the substrate 7 and 15 to sandwich the liquid crystal layer 8 so that the upper laminate 5U and the lower laminate 5D are integrally bonded by the sealing member 19. Make a dimming film 1.
以上，雖詳述了本發明的實施較適合的具體構成，但本發明在不脫離本發明目的的範圍內，可以改變上述的實施形態。 Although the specific configuration of the present invention is described in detail above, the above-described embodiments can be modified without departing from the scope of the invention.
也就是說，在上述實施形態中，雖說明了利用TN方式來驅動液晶材料的情形，但本發明並不限於此，也廣泛適用於利用VA方式、IPS方式來驅動。 That is, in the above embodiment, the case where the liquid crystal material is driven by the TN method has been described. However, the present invention is not limited thereto, and is also widely applicable to driving by the VA method or the IPS method.
此外，在上述實施形態中，雖說明了利用光 阻來製作間隙物的情形，但本發明並不限於此，也適用所謂的珠粒間隔。 Further, in the above embodiment, the use of light has been described. The case where the spacer is formed is blocked, but the present invention is not limited thereto, and the so-called bead spacing is also applied.
1‧‧‧調光薄膜 1‧‧‧Dimming film
2、3‧‧‧線偏光板 2, 3‧‧‧ line polarizer
2A、3A‧‧‧相位差薄膜 2A, 3A‧‧‧ phase difference film
4‧‧‧液晶單元 4‧‧‧Liquid Crystal Unit
5D‧‧‧下側層積體 5D‧‧‧lower laminate
5U‧‧‧上側層積體 5U‧‧‧Upper laminate
6、15‧‧‧基材 6, 15‧‧‧ substrate
8‧‧‧液晶層 8‧‧‧Liquid layer
11、16‧‧‧透明電極 11, 16‧‧‧ transparent electrode
12‧‧‧間隙物 12‧‧‧Interval
13、17‧‧‧配向層 13, 17‧‧‧ Alignment layer
19‧‧‧密封材 19‧‧‧ Sealing material
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| JP2015190322A JP5950014B1 (en) | 2015-09-28 | 2015-09-28 | Light control film |
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| TW201712416A TW201712416A (en) | 2017-04-01 |
| TWI592724B true TWI592724B (en) | 2017-07-21 |
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| JP7110547B2 (en) * | 2016-12-27 | 2022-08-02 | 大日本印刷株式会社 | light control film |
| JP2018109735A (en) * | 2016-12-28 | 2018-07-12 | 大日本印刷株式会社 | Light controlling member, structural body, and method for disposing light controlling member |
| JP7155503B2 (en) * | 2016-12-28 | 2022-10-19 | 大日本印刷株式会社 | Light control member, structure, arrangement method of light control member |
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| JP3903539B2 (en) * | 1997-07-17 | 2007-04-11 | 旭硝子株式会社 | Light control element |
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