JP2023148622A - Dimming device - Google Patents

Dimming device Download PDF

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JP2023148622A
JP2023148622A JP2022056751A JP2022056751A JP2023148622A JP 2023148622 A JP2023148622 A JP 2023148622A JP 2022056751 A JP2022056751 A JP 2022056751A JP 2022056751 A JP2022056751 A JP 2022056751A JP 2023148622 A JP2023148622 A JP 2023148622A
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light control
fpc
transparent electrode
power supply
control film
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真樹 辻
Maki Tsuji
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Toppan Inc
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Toppan Printing Co Ltd
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Abstract

To provide a dimming device with which, when connecting an ITO and an FPC in the power supply connecting part of the dimming device using an ACF, it is possible to suppress the occurrence of cracks to the ITO as will be caused by conductive particles included in the ACF and prevent the drive voltage from lowering due to a rise of connection resistance between the FPC and a dimming sheet.SOLUTION: Provided is a dimming device comprising a dimming sheet which is capable of switching between an opaque state and a transparent state in accordance with an applied voltage, and a power supply connection unit for connecting the dimming sheet to an external power supply. The dimming sheet is composed by being sandwiched between a dimming layer and a transparent substrate in which a transparent electrode layer for applying a voltage to the dimming layer is formed. The power supply connection unit electrically connects the transparent electrode layer and an FPC via an ACF and has a mechanically bonded structure, with a conductive substance further laminated between the transparent electrode layer and the ACF, the conductive substance being formed from a material that is more flexible than the transparent electrode layer.SELECTED DRAWING: Figure 1

Description

本発明は、電気的制御によって光の透過状態を制御する光学素子を備えた調光装置において、特に、調光フィルムとフレキシブルプリント基板とを接続するための位置決めパターンが形成された調光装置に関する。 The present invention relates to a light control device equipped with an optical element that controls the transmission state of light by electrical control, and particularly relates to a light control device in which a positioning pattern for connecting a light control film and a flexible printed circuit board is formed. .

従来、例えば窓に貼り付けて外来光の透過を制御する液晶パネルを用いた調光フィルムに関する工夫が種々に提案されている。調光フィルムとして、ITO(Indium Tin Oxide)による一対の透明電極間に保持された液晶層を備え、透明電極に印加する電圧により液晶層に含まれる液晶分子の配向状態を変化させて、入射した光を散乱する不透明状態(あるいは白濁状態)と、入射した光を透過する透明状態とを切り替え可能に構成されるタイプが例示される(例えば、特許文献1参照)。 Conventionally, various devices have been proposed regarding light control films using liquid crystal panels that are attached to windows to control the transmission of external light. The light control film is equipped with a liquid crystal layer held between a pair of transparent electrodes made of ITO (Indium Tin Oxide), and the alignment state of liquid crystal molecules contained in the liquid crystal layer is changed by the voltage applied to the transparent electrodes. An example is a type that can be switched between an opaque state (or cloudy state) that scatters light and a transparent state that transmits incident light (for example, see Patent Document 1).

このような調光フィルムは、例えばガラス等の透明基材に固定することにより、建築物のみならず車両向けの窓ガラスや展示ウィンドウ、間仕切りなどに採用することが可能となり、プライベート空間とパブリック空間とを分離するため等、空間を分離する設備の他、映像を映し出すスクリーンの用途としての利用についても提案されている。 By fixing this type of light control film to a transparent substrate such as glass, it can be used not only for buildings but also for vehicle windows, exhibition windows, partitions, etc., and can be used in both private and public spaces. In addition to equipment that separates spaces, such as separating spaces, there have also been proposals for its use as a screen for displaying images.

こうした調光フィルムは、透明電極層を電源に接続するための電源接続部を有する。外部電源から給電するための電源接続部として、低コストで簡便な構造として、透明電極ITOとFPC(フレキシブルプリント基板)とをACF(導電性接着層)を用いて電気的に接続しつつ、機械的に接着することで配線を引き出す構造も採用されている(特許文献2参照)。FPCとACFを用いた接続では、面状の接合構造となり、調光ユニットの運搬時や取り付け作業時の揺れや衝撃に対して、接合の耐久性が向上している。 Such a light control film has a power connection for connecting the transparent electrode layer to a power source. As a power connection part for supplying power from an external power source, the transparent electrode ITO and FPC (flexible printed circuit board) are electrically connected using an ACF (conductive adhesive layer) and mechanically connected as a low-cost and simple structure. A structure has also been adopted in which the wiring is drawn out by adhering the wires (see Patent Document 2). The connection using FPC and ACF has a planar joint structure, which improves the durability of the joint against shaking and impact during transportation and installation of the dimming unit.

このとき、調光フィルムの電源接続部の接続端子とFPCの接続端子がずれた状態で接続されないように、調光フィルムの電源接続部とFPCの位置合わせが行なわれる。 At this time, the power supply connection part of the light control film and the FPC are aligned so that the connection terminal of the power supply connection part of the light control film and the connection terminal of the FPC are not connected in a shifted state.

図1に、調光装置の正面図を示す。図1のように、電源接続部16A、16Bは調光フィルム11の両面端部に設けられており、一方の面の電源接続部16Aの該当する箇所にあたる他方の面の透明電極層13Bの一部はカットされ除去されており、FPC17Aの接続端子は、電源接続部16Aの露出した透明電極層13AにACF19Aを介して接続されている(図2参照)。そして、FPC17Aを電源接続部16Aへ接続する時の、従来行われている位置調整は、調光フィルム11にアライメントマークがない為、垂直方向(Y方向)に関しては、図4に示すように、調光フィルム11の電源接続部16Aの近傍の端辺14とFPCの両側に形成されたCuパターンによるアライメントマーク15Aを合わせ基準とし、水平方向(X方向)に関しては調光フィルム11の外側辺5または他方の面の透明電極層が取り除かれた部分のカットライン6とFPCの幅方向の一端縁7を合わせ基準として接続されている。同様の方法にて、他方の面の電源接続部16BへもFPC17Bの接続端子が接続される。 FIG. 1 shows a front view of the light control device. As shown in FIG. 1, the power connection parts 16A and 16B are provided at the ends of both sides of the light control film 11, and the transparent electrode layer 13B on the other side corresponds to the corresponding part of the power connection part 16A on one side. The connecting terminal of the FPC 17A is connected to the exposed transparent electrode layer 13A of the power supply connecting part 16A via the ACF 19A (see FIG. 2). The conventional position adjustment when connecting the FPC 17A to the power supply connection part 16A is performed in the vertical direction (Y direction) as shown in FIG. The end edge 14 of the light control film 11 near the power connection part 16A and the alignment mark 15A formed by the Cu pattern on both sides of the FPC are used as a reference, and in the horizontal direction (X direction), the outer side 5 of the light control film 11 is aligned. Alternatively, the cut line 6 of the portion where the transparent electrode layer on the other side has been removed is aligned with one end edge 7 in the width direction of the FPC, and the connection is made using the reference. In a similar manner, the connection terminal of the FPC 17B is also connected to the power supply connection section 16B on the other side.

しかしながら、アライメントマークが調光フィルム11上の接続領域に該当する箇所にはなく、X方向のFPCの合わせ基準7と調光フィルム11の合わせ基準(5または6)が離れた位置に形成されているため、位置出し用カメラによる位置出し精度が悪く、調光フィルム11の電源接続部16A、16Bの透明電極層13A、13BとFPC17A、17Bに形成された端子群が精度よく接続されないという問題があった。 However, the alignment mark is not located at a location corresponding to the connection area on the light control film 11, and the alignment reference 7 of the FPC in the X direction and the alignment reference (5 or 6) of the light control film 11 are formed at separate positions. Therefore, the positioning accuracy by the positioning camera is poor, and the problem is that the transparent electrode layers 13A, 13B of the power supply connection parts 16A, 16B of the light control film 11 and the terminal groups formed on the FPCs 17A, 17B are not connected accurately. there were.

特開2017-187775号公報Japanese Patent Application Publication No. 2017-187775 特許第6439029号公報Patent No. 6439029

本発明はこのような問題点に鑑みてなされたものであり、FPCを用いる調光装置において、調光フィルムとFPCとの位置決め精度を向上させる調光装置を提供することを課題とする。 The present invention has been made in view of these problems, and an object of the present invention is to provide a light control device using an FPC that improves the positioning accuracy of the light control film and the FPC.

上記の課題を解決するための手段として、本発明の第1の態様は、
印加電圧に応じて不透明状態と、透明状態とを切り替え可能な調光フィルムと、前記調光フィルムの端部に形成された電源接続部にFPCの導電部を接続している調光装置であって、
前記調光フィルムは、調光層と、前記調光層に電圧を印加する透明電極層が形成された透明基材に挟持されてなる構成であり、
前記電源接続部は、前記透明電極層とFPCとをACFを介して電気的に接続しつつ、機械的に接着された構造を有し、
前記FPCの両端部には垂直方向(Y方向)のアライメントマークが設けられ、前記アライメントマークを、前記調光フィルムの、前記電源接続部近傍の端辺に合わせて、前記調光フィルムとFPCとの接続の垂直方向(Y方向)の位置決めをしており、
前記透明電極層には、前記電源接続部近傍の端辺に切り欠きまたは凸形状が設けられ、前記切り欠きまたは凸形状の幅方向の一側辺を基準線とし、前記基準線にFPCの幅方向の一側辺を当接させて、前記調光フィルムとFPCとの接続の水平方向(X方向)の位置決めをしていることを特徴とする調光装置である。
As a means for solving the above problems, a first aspect of the present invention includes:
The light control device includes a light control film capable of switching between an opaque state and a transparent state according to an applied voltage, and a conductive part of an FPC connected to a power supply connection part formed at an end of the light control film. hand,
The light control film is sandwiched between a transparent base material on which a light control layer and a transparent electrode layer for applying a voltage to the light control layer are formed,
The power supply connection part has a structure in which the transparent electrode layer and the FPC are mechanically bonded while being electrically connected via an ACF,
Alignment marks in the vertical direction (Y direction) are provided on both ends of the FPC, and the alignment marks are aligned with the edges of the light control film near the power supply connection part, and the light control film and FPC are aligned. The connection is positioned in the vertical direction (Y direction).
The transparent electrode layer is provided with a notch or a convex shape on the edge near the power supply connection part, one side in the width direction of the notch or convex shape is used as a reference line, and the width of the FPC is set on the reference line. The light control device is characterized in that the connection between the light control film and the FPC is positioned in the horizontal direction (X direction) by bringing one side of the light control film into contact with the FPC.

本発明によれば、調光フィルム上の接続領域に該当する箇所に、合わせ基準を有する切り欠きまたは凸形状を形成することで位置決め精度を向上させることができる。調光フィルムとFPCとの接続のX方向の位置決めをするために、電源接続部近傍の透明電極層に切り欠き形状か、または凸形状が設けられており、従って、アライメントマークを別に設ける必要がなく、それぞれの基板に設けられた基準同士を当接することによって位置決めすることができるので、位置決め精度を向上させる効果がある。 According to the present invention, positioning accuracy can be improved by forming a cutout or a convex shape having an alignment reference at a location corresponding to the connection area on the light control film. In order to position the connection between the light control film and the FPC in the X direction, a cutout or a convex shape is provided in the transparent electrode layer near the power supply connection part, so it is necessary to separately provide an alignment mark. Instead, positioning can be performed by abutting the references provided on the respective substrates, which has the effect of improving positioning accuracy.

また、本発明の第2の態様は、
前記切り欠きまたは凸形状は、FPCの幅方向の一側辺とのX方向の距離を測れる基準線を有するものであればよく、直線状、四角形状、三角形状のいずれかであってもよい。
Moreover, the second aspect of the present invention is
The notch or convex shape may have a reference line that can measure the distance in the X direction from one side in the width direction of the FPC, and may be linear, square, or triangular. .

FPCを用いる調光装置において、調光フィルムの電源接続部近傍の透明電極層に切り欠きまたは凸形状を設け、調光フィルムとFPCとの位置決め精度を向上させる調光装置を提供することが可能である。 In a light control device using FPC, it is possible to provide a light control device that improves positioning accuracy between the light control film and the FPC by providing a cutout or a convex shape in the transparent electrode layer near the power connection part of the light control film. It is.

本発明の一実施形態に係る調光装置の正面図。FIG. 1 is a front view of a light control device according to an embodiment of the present invention. 調光装置の一方の面に形成された電源接続部の概略断面図。FIG. 3 is a schematic cross-sectional view of a power supply connection portion formed on one surface of the light control device. 調光装置の他方の面に形成された電源接続部の概略断面図。FIG. 7 is a schematic cross-sectional view of a power supply connection portion formed on the other surface of the light control device. 従来の調光フィルムとFPCの接続の位置決め方法を説明する図。FIG. 3 is a diagram illustrating a conventional positioning method for connecting a light control film and an FPC. 本発明に係る調光フィルムとFPCの接続の位置決め方法を説明する図。FIG. 3 is a diagram illustrating a method for positioning the connection between a light control film and an FPC according to the present invention. 本発明に係る切り欠きの形状を示す図。FIG. 3 is a diagram showing the shape of a notch according to the present invention. 本発明に係る凸形状の形状を示す図。FIG. 3 is a diagram showing the shape of a convex shape according to the present invention.

本発明の一実施形態に係る調光装置の構造の一例について、図面を参照して説明する。図1は、本発明の一実施形態に係る調光装置の正面図であるが、図1が示すように、調光装置10は、大面積での使用形態にあたって、例えば、窓ガラス等の透明板20に取り付けられる。調光装置10は、フレキシブルで薄い材料が主体であり、可撓性に富む。支持基材は、ガラスや樹脂等からなる透明な板状の部材であって平面状であってもよいし曲面状でもよい。透明板20は、窓ガラス以外にパーテーションやガラス壁等の建材であってもよいし、自動車の窓ガラス等の車両用部材であってもよい。 An example of the structure of a light control device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a light control device according to an embodiment of the present invention. As shown in FIG. It is attached to the plate 20. The light control device 10 is mainly made of flexible and thin material, and is highly flexible. The support base material is a transparent plate-like member made of glass, resin, or the like, and may be flat or curved. The transparent plate 20 may be a building material such as a partition or a glass wall other than a window glass, or may be a vehicle member such as an automobile window glass.

図1を見てわかるように、調光装置10は、略矩形形状を有しており、調光装置10の大半を占める調光フィルム11は、調光層(液晶層)12と、調光層12に電圧を印加する一対の透明電極層13A、13Bに挟持されてなる構成である(図2および図3参照)。透明電極層13Aの端部には外部電源18Aから給電するための電源接続部16Aが接続され、透明電極層13Bの端部には外部電源18Bから給電するための電源接続部16Bが接続されている。 As can be seen from FIG. 1, the light control device 10 has a substantially rectangular shape, and the light control film 11, which occupies most of the light control device 10, includes a light control layer (liquid crystal layer) 12 and a light control layer (liquid crystal layer) 12. The layer 12 is sandwiched between a pair of transparent electrode layers 13A and 13B that apply a voltage to the layer 12 (see FIGS. 2 and 3). A power supply connection part 16A for supplying power from an external power supply 18A is connected to an end of the transparent electrode layer 13A, and a power supply connection part 16B for supplying power from an external power supply 18B is connected to an end of the transparent electrode layer 13B. There is.

調光層12に電圧を印加する一対の透明電極層13A、13Bの各々は、導電性を有する透明な層である。透明電極層13A、13Bを構成する材料としては、例えば、酸化インジウムスズ(ITO)、フッ素ドープ酸化スズ(FTO)、酸化スズ、酸化亜鉛、カーボンナノチューブ(CNT)、ポリ(3,4-エチレンジオキシチオフェン)(PEDOT)を含むポリマー等が挙げられる。透明電極層13A、13Bの好適な厚さは略80nm以上150nm以下である。 Each of the pair of transparent electrode layers 13A and 13B that applies a voltage to the light control layer 12 is a transparent layer that has conductivity. Examples of the materials constituting the transparent electrode layers 13A and 13B include indium tin oxide (ITO), fluorine-doped tin oxide (FTO), tin oxide, zinc oxide, carbon nanotubes (CNT), and poly(3,4-ethylenedioxide). Examples include polymers containing oxythiophene (PEDOT). The preferred thickness of the transparent electrode layers 13A and 13B is approximately 80 nm or more and 150 nm or less.

電源接続部16A、16Bは、調光フィルムの一辺に沿って、透明電極層13A、13Bの端部に位置する。電源接続部16A、16Bが配置される上記一辺は矩形のいずれの辺であってもよく、透明板20や駆動回路(不図示)の配置等に応じて設定されればよい。また、電源接続部16A、16Bは、上記一辺の中央部を含む位置に配置されてもよいし、図1に示す様に、上記一辺の端部を含む位置に配置されてもよい。そして、電源接続部16A、16Bは、リード線(不図示)を備え、リード線は、調光フィルム11の外側に延び、駆動回路に接続されている。 The power supply connection parts 16A and 16B are located at the ends of the transparent electrode layers 13A and 13B along one side of the light control film. The side on which the power supply connection parts 16A and 16B are arranged may be any side of the rectangle, and may be set according to the arrangement of the transparent plate 20 and the drive circuit (not shown). Further, the power supply connecting parts 16A and 16B may be arranged at a position including the center of the one side, or, as shown in FIG. 1, may be arranged at a position including the end of the one side. The power supply connection parts 16A and 16B are provided with lead wires (not shown), and the lead wires extend outside the light control film 11 and are connected to the drive circuit.

また、電源接続部16A、16Bが接続する透明電極層13A、13Bの該当する箇所にあたる他方の面の透明電極層の一部(それぞれ透明電極層13Bの一部、透明電極層13Aの一部)は、カットされて除去されて、電源接続部16A、16Bは、調光層12および他方の面の透明電極層から露出する領域に接続されている。 Also, a part of the transparent electrode layer on the other side corresponding to the corresponding part of the transparent electrode layers 13A and 13B to which the power supply connection parts 16A and 16B are connected (a part of the transparent electrode layer 13B and a part of the transparent electrode layer 13A, respectively) are cut and removed, and the power supply connection parts 16A and 16B are connected to the light control layer 12 and the area exposed from the transparent electrode layer on the other side.

図2および図3に示すように、透明電極層13A、13Bは、接着層25を介して透明板20に貼り付けられており、透明電極層13Aは、調光層12の一方の面に接し、電源接続部16Aは、透明電極層13Aのなかで調光層12および他方の透明電極層13Bから露出する領域に接続されている。透明電極層13Bは、調光層12の他方の面に接している。電源接続部16Bは、透明電極層13Bのなかで調光層12および他方の透明電極層13Aから露出する領域に接続されており、透明板20と対向する。 As shown in FIGS. 2 and 3, the transparent electrode layers 13A and 13B are attached to the transparent plate 20 via the adhesive layer 25, and the transparent electrode layer 13A is in contact with one surface of the light control layer 12. The power supply connection portion 16A is connected to a region of the transparent electrode layer 13A exposed from the light control layer 12 and the other transparent electrode layer 13B. The transparent electrode layer 13B is in contact with the other surface of the light control layer 12. The power supply connection portion 16B is connected to a region of the transparent electrode layer 13B that is exposed from the light control layer 12 and the other transparent electrode layer 13A, and faces the transparent plate 20.

電源接続部16A、16Bは、透明電極層13A、13Bに接合された導電性接着層であるACF19A、19Bと、ACF19A、19Bによって接合されたフレキシブルプリント基板FPC17A、17Bとを備える。電源接続部16A、16Bは、さらに、FPC17A、17Bに接続されたリード線とを備える。リード線は、電源から供給される
電圧を駆動電圧に変換する駆動回路に接続され、電源接続部16A、16Bを通じて、透明電極層13A、13Bに駆動電圧が印加される。従って、電源接続部16A、16BとFPC17A、17Bに設けられた端子とを相対的に位置合わせすることで、調光フィルム11とFPC17A、17Bとがそれぞれ電気的に接続されることになる。
The power supply connection parts 16A, 16B include ACFs 19A, 19B which are conductive adhesive layers bonded to the transparent electrode layers 13A, 13B, and flexible printed circuit boards FPCs 17A, 17B bonded by the ACFs 19A, 19B. The power supply connection parts 16A, 16B further include lead wires connected to the FPCs 17A, 17B. The lead wires are connected to a drive circuit that converts the voltage supplied from the power source into a drive voltage, and the drive voltage is applied to the transparent electrode layers 13A, 13B through the power supply connections 16A, 16B. Therefore, by relatively aligning the power supply connection parts 16A, 16B and the terminals provided on the FPCs 17A, 17B, the light control film 11 and the FPCs 17A, 17B are electrically connected, respectively.

図5では、本発明に係る調光フィルム11における、電源接続部16Aの該当する箇所へFPC17Aを接続させる位置の両側に形成された四角形状の切り欠き30を示している。この切り欠き30の幅方向の一側辺31とFPC17Aの幅方向の一側辺7をX方向のアライメント基準とし、FPCの両端部に形成されたY方向のアライメントマーク15Aと電源接続部近傍の端辺4をY方向のアライメント基準として、調光フィルムとFPC17Aとの接続の位置決めをして接続している。また、調光フィルム11と他の面のFPC17Bも同様の位置決め方法で接続する。なお、四角形状の切り欠き30は、接続させる位置の片側にのみ形成してもよい。 FIG. 5 shows rectangular notches 30 formed on both sides of the position where the FPC 17A is connected to the corresponding location of the power supply connection portion 16A in the light control film 11 according to the present invention. One side 31 in the width direction of this notch 30 and one side 7 in the width direction of the FPC 17A are used as the alignment reference in the X direction, and the alignment marks 15A in the Y direction formed at both ends of the FPC and the The connection between the light control film and the FPC 17A is determined and connected using the end side 4 as an alignment reference in the Y direction. Further, the light control film 11 and the FPC 17B on the other side are also connected using the same positioning method. Note that the rectangular notch 30 may be formed only on one side of the connection position.

このように、調光フィルム11とFPC17A、17Bを接続させる位置の両側に近接して切り欠き30が形成されるので、切り欠き30の幅方向の一側辺31とFPC17Aの幅方向の一側辺7をX方向の合わせ基準とすることによって、位置決め用カメラによって、X方向の位置決めを精度よく行うことが可能になる。 In this way, the notch 30 is formed close to both sides of the position where the light control film 11 and the FPCs 17A and 17B are connected, so that one side 31 of the notch 30 in the width direction and one side of the FPC 17A in the width direction By using the side 7 as the alignment reference in the X direction, it becomes possible to perform positioning in the X direction with high accuracy using the positioning camera.

また、本発明に係る切り欠き30の形状は、X方向に対して基準線を有するものであれば、図6に示すように、四角形状以外に、三角形状、直線状も用いることができる。また、同様の理由から、切り欠き以外に凸形状でもかまわない。凸形状としては、図7に示すような四角凸形状、三角凸形状、FPC部凸形状などを用いることができる。 Furthermore, as shown in FIG. 6, the shape of the notch 30 according to the present invention may be triangular or linear, as long as it has a reference line in the X direction, in addition to the rectangular shape. Further, for the same reason, a convex shape may be used instead of the notch. As the convex shape, a square convex shape, a triangular convex shape, an FPC part convex shape, etc. as shown in FIG. 7 can be used.

上記の切り欠きまたは凸形状の位置決めパターン30による位置決めは、例えば、CCDカメラ及び照明光源などを設置して、位置決めパターン30の近傍を拡大して観察しながら行なわれる。照明光源で位置決めパターン30の近傍を照明し、CCDカメラで撮像した位置決めパターン30の近傍の画像をモニタなどに表示させる。このモニタを見ながら基準線同士を当接するようにFPC17A、17Bを移動させてアライメントを行ない、調光フィルム11とFPC17A、17Bとを位置合わせした状態でACF19A、19Bを介して貼り合わせる。これによって、調光フィルム11とFPC17A、17Bとが精度よく接続することができる。 Positioning using the above-mentioned notch or convex positioning pattern 30 is performed, for example, by installing a CCD camera, an illumination light source, etc., and observing the vicinity of the positioning pattern 30 under magnification. The vicinity of the positioning pattern 30 is illuminated with an illumination light source, and an image of the vicinity of the positioning pattern 30 captured by a CCD camera is displayed on a monitor or the like. Alignment is performed by moving the FPCs 17A and 17B so that the reference lines are in contact with each other while watching this monitor, and in a state where the light control film 11 and the FPCs 17A and 17B are aligned, they are bonded together via the ACFs 19A and 19B. Thereby, the light control film 11 and the FPCs 17A and 17B can be connected with high accuracy.

以上によれば、FPC17A、17Bの幅方向の一側辺7をX方向の基準線とし、電源接続部16A、16Bの近傍の透明電極層13A、13Bに設けた、切り欠きまたは凸形状の幅方向の一側辺に基準線を沿わせて当接配置するだけで、FPC17A、17Bの端子部が自動的に電源接続部16A、16Bの端子部に合致するので、CCDカメラを用いて光学的にアライメントすることで短時間で精度よく位置決め作業を行うことができる。換言すれば、透明電極層13A、13Bに設けた、切り欠きまたは凸形状の位置決めパターン30を、位置決め治具として代用することで、FPC17A、17Bの位置決めを安価かつ簡単に行うことができる。 According to the above, one side 7 in the width direction of the FPCs 17A, 17B is taken as a reference line in the By simply aligning the reference line along one side of the direction and placing them in contact with each other, the terminals of FPCs 17A and 17B will automatically match the terminals of power supply connections 16A and 16B. By aligning to In other words, by using the notch or convex positioning pattern 30 provided on the transparent electrode layers 13A, 13B as a positioning jig, the FPCs 17A, 17B can be positioned easily and inexpensively.

従って、本発明によれば、調光フィルム11とFPC17A、17Bとは、水平方向および垂直方向とも精度よく接続することが可能な調光装置を供給することができる。 Therefore, according to the present invention, it is possible to provide a light control device in which the light control film 11 and the FPCs 17A and 17B can be connected with high precision both in the horizontal and vertical directions.

4・・・調光フィルム端辺
5・・・調光フィルム側辺
6・・・透明電極層カットライン
7・・・FPC側辺
10・・・調光装置
11・・・調光フィルム
12・・・調光層
13A、13B・・・透明電極層
15・・・アライメントマーク
16A、16B・・・電源接続部
17A、17B・・・FPC
18A、18B・・・外部電源
19A、19B・・・ACF
20・・・透明板
25・・・接着層
30・・・切り欠きまたは凸形状(位置決めパターン)
4... Edge of light control film 5... Side of light control film 6... Transparent electrode layer cut line 7... Side of FPC 10... Light control device 11... Light control film 12. ...Dimmer layer 13A, 13B...Transparent electrode layer 15...Alignment mark 16A, 16B...Power connection part 17A, 17B...FPC
18A, 18B...External power supply 19A, 19B...ACF
20... Transparent plate 25... Adhesive layer 30... Notch or convex shape (positioning pattern)

Claims (2)

印加電圧に応じて不透明状態と、透明状態とを切り替え可能な調光フィルムと、前記調光フィルムの端部に形成された電源接続部にFPCの導電部を接続している調光装置であって、
前記調光フィルムは、調光層と、前記調光層に電圧を印加する透明電極層が形成された透明基材に挟持されてなる構成であり、
前記電源接続部は、前記透明電極層とFPCとをACFを介して電気的に接続しつつ、機械的に接着された構造を有し、
前記FPCの両端部には垂直方向(Y方向)のアライメントマークが設けられ、前記アライメントマークを、前記調光フィルムの、前記電源接続部近傍の端辺に合わせて、前記調光フィルムとFPCとの接続の垂直方向(Y方向)の位置決めをしており、
前記透明電極層には、前記電源接続部近傍の端辺に切り欠きまたは凸形状が設けられ、前記切り欠きまたは凸形状の幅方向の一側辺を基準線とし、前記基準線にFPCの幅方向の一側辺を当接させて、前記調光フィルムとFPCとの接続の水平方向(X方向)の位置決めをしていることを特徴とする調光装置。
The light control device includes a light control film capable of switching between an opaque state and a transparent state according to an applied voltage, and a conductive part of an FPC connected to a power connection part formed at an end of the light control film. hand,
The light control film is sandwiched between a transparent base material on which a light control layer and a transparent electrode layer for applying a voltage to the light control layer are formed,
The power supply connection part has a structure in which the transparent electrode layer and the FPC are mechanically bonded while being electrically connected via an ACF,
Alignment marks in the vertical direction (Y direction) are provided at both ends of the FPC, and the alignment marks are aligned with the edges of the light control film near the power connection part, and the light control film and FPC are aligned. The connection is positioned in the vertical direction (Y direction).
The transparent electrode layer is provided with a notch or a convex shape on the edge near the power supply connection part, one side in the width direction of the notch or convex shape is used as a reference line, and the width of the FPC is set on the reference line. A light control device characterized in that the connection between the light control film and the FPC is positioned in the horizontal direction (X direction) by bringing one side of the light control film into contact with the FPC.
前記切り欠きまたは凸形状は、直線状、四角形状、三角形状のいずれかであることを特徴とする請求項1に記載の調光装置。 The light control device according to claim 1, wherein the cutout or convex shape is linear, square, or triangular.
JP2022056751A 2022-03-30 2022-03-30 Dimming device Pending JP2023148622A (en)

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