JP2020088132A - Manufacturing method of photoelectric conversion device - Google Patents

Manufacturing method of photoelectric conversion device Download PDF

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JP2020088132A
JP2020088132A JP2018219533A JP2018219533A JP2020088132A JP 2020088132 A JP2020088132 A JP 2020088132A JP 2018219533 A JP2018219533 A JP 2018219533A JP 2018219533 A JP2018219533 A JP 2018219533A JP 2020088132 A JP2020088132 A JP 2020088132A
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photoelectric conversion
closed loop
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sealing material
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JP7172496B2 (en
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祐也 北川
Yuya Kitagawa
祐也 北川
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Zeon Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

To provide a manufacturing method of a photoelectric conversion device, in which dispenser control for applying a sealing material for forming a closed loop seal is easily performed at a position close to the outer shape of a photoelectric conversion element arranged on a substrate.SOLUTION: A manufacturing method of a photoelectric conversion device includes a seal material applying step of drawing a seal pattern P by applying a seal material with a dispenser on a first substrate 10 having a plurality of arranged photoelectric conversion elements 11 to 18, and a substrate bonding step of bonding the first substrate and a second substrate, and in the seal material applying step, the sealing pattern P forms polygonal closed loop portions R1 to R8 surrounding photoelectric conversion elements 11 to 18, respectively, and all corner portions C1 to C32 of the closed loop portions R1 to R8 are formed by intersecting two straight line parts L1 to L23 in the sealing pattern P.SELECTED DRAWING: Figure 1

Description

本発明は、光電変換装置の製造方法に関する。 The present invention relates to a method for manufacturing a photoelectric conversion device.

従来、有機系（薄膜）太陽電池などの光電変換装置の製造方法としては、例えば、第１の基板上に配列された複数の矩形の光電変換素子の周囲を取囲むようにシール材を塗布して閉ループ状のシールパターンを形成し、さらに第２の基板でこれらを挟み込んで電解液を閉ループ部の内側に封入する工程を含むものが知られている。 Conventionally, as a method of manufacturing a photoelectric conversion device such as an organic (thin film) solar cell, for example, a sealing material is applied so as to surround a plurality of rectangular photoelectric conversion elements arranged on a first substrate. It is known that a step of forming a closed loop seal pattern is further carried out, and a second substrate is sandwiched therebetween to enclose the electrolytic solution inside the closed loop portion.

特許文献１には、２枚の基板の間に、配列された複数の矩形の表示領域と、表示領域の周囲を取囲むシールを備える平面表示装置の製造方法が記載されている。当該製造方法は、間隔をおいて配列された複数の矩形の表示領域（セル）の列が１行以上設けられた第１の基板を使用し、表示領域を囲む閉ループ状のパターンをもつシールを塗布する工程と、該第１の基板に、第２の基板を重ね合わせた後、該シールを硬化して接合を行う工程とを含むものであり、隣接する２つの表示領域を囲むそれぞれの矩形の閉ループパターンが、当該２つの表示領域の間で部分的に重なり合う重複領域を有するようにしている。このような方法により、シール材を塗布する際に、できるだけ表示領域に近づけてシールを形成し、狭額縁化を図っている。 Patent Document 1 describes a method of manufacturing a flat display device including a plurality of rectangular display areas arranged between two substrates and a seal surrounding the display area. The manufacturing method uses a first substrate provided with one or more rows of a plurality of rectangular display areas (cells) arranged at intervals, and a seal having a closed loop pattern surrounding the display area is used. It includes a step of applying and a step of superimposing a second substrate on the first substrate and then curing the seal to bond the two rectangles, each rectangle surrounding two adjacent display regions. The closed loop pattern of 1 has an overlapping area that partially overlaps between the two display areas. With such a method, when the sealing material is applied, the seal is formed as close to the display area as possible to achieve a narrow frame.

また、特許文献２には、一方の基板上にディスペンサによりシール材を閉ループ状に塗布する工程と、閉ループ内に液晶材料を滴下する工程と、一方の基板のシール材が形成された面側に他方の基板を対向させて重ね合せる工程と、を有する液晶表示素子の製造方法が開示されている。この方法においては、閉ループ状のシールパターンに二度描画する部分を設け、ディスペンサと基板とのギャップ、塗布速度、及び塗布圧の少なくとも何れかを調整することにより、二度描画する部分でのシール材の合計の塗布量を他の描画部分でのシール材の塗布量と同じにするようにしている。当該方法により、描画し始め兼描画し終わりの箇所でのシール切れやループ内へのシール糸曳きの発生を抑制し、表示不良の発生を防止している。 Further, in Patent Document 2, a step of applying a sealing material in a closed loop shape on one substrate by a dispenser, a step of dropping a liquid crystal material in the closed loop, and a surface side of the one substrate on which the sealing material is formed. A method of manufacturing a liquid crystal display element, which includes a step of stacking the other substrate so as to face each other is disclosed. In this method, a portion to be drawn twice is provided in the closed loop seal pattern, and at least one of the gap between the dispenser and the substrate, the coating speed, and the coating pressure is adjusted to seal the portion to be drawn twice. The total application amount of the material is set to be the same as the application amount of the sealing material in other drawing portions. By this method, it is possible to prevent the occurrence of seal breakage at the start of drawing and the end of drawing and the occurrence of seal stringing in the loop, and prevent the occurrence of display defects.

特許文献３には、互いに対向する一対の電極と、一対の電極間に配置される電解質と、電解質の周囲に設けられる封止部とを備え、封止部が少なくとも１つの角部を有しており、角部における一対の電極の少なくとも一方との第１接触面は、湾曲している湾曲線を電解質側に含有する第１湾曲線含有面を有し、湾曲線が、最小の曲率半径が０．３ｍｍより大きく５００ｍｍ以下となるように構成した光電変換素子が開示されている。このような構成により、封止部の角部と作用極又は対極との接触面における応力集中を避けて、クラックの発生、及び電解質の漏洩を防止している。 Patent Document 3 includes a pair of electrodes facing each other, an electrolyte disposed between the pair of electrodes, and a sealing portion provided around the electrolyte, and the sealing portion has at least one corner portion. The first contact surface with at least one of the pair of electrodes in the corner portion has a first curve line containing surface containing a curved curve line on the electrolyte side, and the curve line has a minimum radius of curvature. Discloses a photoelectric conversion element configured to be greater than 0.3 mm and 500 mm or less. With such a configuration, stress concentration at the contact surface between the corner of the sealing portion and the working electrode or the counter electrode is avoided, and cracking and electrolyte leakage are prevented.

特許文献４には、第一電極と第二電極とが光硬化性樹脂材料からなる隔壁を用いて貼り合わされた色素増感太陽電池であって、第一電極は第一集電配線を備え、該第一集電配線は第一被覆層で被覆されており、第一被覆層は、該第一被覆層周辺部に第一段差下部、該第一被覆層中央部に第一段差上部を有する段差を有しており、第一被覆層の第一段差上部は、第二電極と接しており、隔壁は少なくとも、第一段差下部と第二電極との間に形成されているとともに、両電極の周縁部をも封止するように形成されている色素増感太陽電池が開示されている。この色素増感太陽電池は、集電配線の保護と電極間の接着のために、光硬化性樹脂を使用し、集電配線の電解液に対する高い耐腐食性と、セルの高い封止能を有するものとされている。 Patent Document 4 discloses a dye-sensitized solar cell in which a first electrode and a second electrode are bonded together using a partition wall made of a photocurable resin material, and the first electrode includes a first current collecting wiring, The first current collecting wiring is covered with a first coating layer, and the first coating layer has a first step lower portion at a peripheral portion of the first coating layer and a first step upper portion at a central portion of the first coating layer. There is a step, the first step upper part of the first coating layer is in contact with the second electrode, and the partition wall is formed at least between the first step lower part and the second electrode, and both electrodes are formed. There is disclosed a dye-sensitized solar cell formed so as to also seal the peripheral portion of the. This dye-sensitized solar cell uses a photo-curable resin for protection of the current collector wiring and adhesion between the electrodes, and it has high corrosion resistance to the electrolyte of the current collector wiring and high cell sealing ability. It is supposed to have.

特許第５７４４７６７号公報Japanese Patent No. 5744767 特許第４０８２９１０号公報Japanese Patent No. 4082910 特許第５６８４９１６号公報Japanese Patent No. 568916 特許第５３９７５８５号公報Patent No. 5397585

しかしながら、上記特許文献１に記載の方法においては、各表示領域をそれぞれ取囲む矩形のシールの角部をディスペンサで連続的に描画（シール材を塗布）するため、当該角部は直角にならず、丸みを帯びた湾曲形状となり易い。また、隣接する２つの表示領域の間には重複領域を配置するための間隔が必要となるため、狭額縁化の観点では改善の余地がある。 However, in the method described in Patent Document 1, since the corners of the rectangular seal surrounding each display area are continuously drawn by the dispenser (the sealing material is applied), the corners do not become right angles. , Tends to have a rounded curved shape. Further, since an interval for arranging the overlapping area is required between two adjacent display areas, there is room for improvement from the viewpoint of narrowing the frame.

また、上記特許文献２に記載の方法においても、閉ループ状のシールの角部は、ディスペンサにより連続的に描画されるため、角部が湾曲し易く、また、二度描画する部分のシール材の線幅の調整のために、複雑なディスペンス量の制御が必要となる。 Further, in the method described in Patent Document 2 as well, since the corners of the closed-loop seal are continuously drawn by the dispenser, the corners are likely to be curved, and the seal material of the portion to be drawn twice is In order to adjust the line width, it is necessary to control a complicated dispense amount.

また、上記特許文献３には、スクリーン印刷により封止部（シール）を形成する方法が開示されているものの、スクリーン印刷は使用できるペーストの制約があるため好ましくない。また、ディスペンサにより封止部を形成する場合、角部に曲率をつけようとすると、製造に時間がかかるだけでなく、ディスペンサの複雑な加減速制御が必要となり、装置に負荷が掛かるため装置の剛性を高くする必要がある。 Further, although Patent Document 3 discloses a method of forming a sealing portion (seal) by screen printing, screen printing is not preferable because there are restrictions on the paste that can be used. In addition, when forming a sealing portion with a dispenser, if it is attempted to add curvature to the corners, not only will it take time to manufacture, but complicated acceleration/deceleration control of the dispenser will be required, and the load on the device will impose a load on the device. It is necessary to increase the rigidity.

また、上記特許文献４に記載の色素増感太陽電池は、応力が集中し易い角部が、面ではなく点で構成されているため、応力集中によりクラックが生じ易くなる虞がある。 Further, in the dye-sensitized solar cell described in Patent Document 4, since the corners where stress is likely to be concentrated are formed by points instead of faces, there is a possibility that cracks are likely to occur due to stress concentration.

それゆえ本発明は、基板上に配列された光電変換素子の外形に近接する位置に、閉ループ状のシールを形成する為のシール材を塗布するディスペンサ制御が容易な、光電変換装置の製造方法を提供することを目的とする。 Therefore, the present invention provides a method for manufacturing a photoelectric conversion device, which is easy to dispenser control for applying a sealing material for forming a closed-loop seal at a position close to the outer shape of photoelectric conversion elements arranged on a substrate. The purpose is to provide.

本発明は、上記課題を解決するためになされたものであり、本発明における光電変換装置の製造方法は、
間隔をおいて配列された複数の光電変換素子を備える第１基板に、前記光電変換素子の周囲を取囲むようにディスペンサでシール材を塗布することでシールパターンを描画するシール材塗布工程と、
前記シール材塗布工程後の前記第１基板に、前記光電変換素子及び前記シール材を挟むように第２基板を重ね合わせ、シール材を硬化することにより、前記第１基板と前記第２基板とを接合する基板接合工程と、を含む光電変換装置の製造方法であって、
前記シール材塗布工程は、
前記シールパターンが前記光電変換素子の周囲をそれぞれ取囲む多角形の閉ループ部を形成し、
該閉ループ部の全ての角部が、前記シールパターンにおける２本の直線部が交差することにより形成されることを特徴とするものである。 The present invention has been made to solve the above problems, and a method for manufacturing a photoelectric conversion device according to the present invention is
A first substrate having a plurality of photoelectric conversion elements arranged at intervals, a sealing material applying step of drawing a sealing pattern by applying a sealing material with a dispenser so as to surround the photoelectric conversion elements;
A second substrate is superposed on the first substrate after the sealing material applying step so as to sandwich the photoelectric conversion element and the sealing material, and the sealing material is cured, thereby forming the first substrate and the second substrate. A method of manufacturing a photoelectric conversion device, comprising: a substrate bonding step of bonding
The sealing material applying step,
The seal pattern forms a polygonal closed loop portion surrounding each of the photoelectric conversion elements,
All corners of the closed loop portion are formed by intersecting two straight line portions in the seal pattern.

なお、本発明の光電変換装置の製造方法にあっては、隣接する前記閉ループ部における少なくとも一方側の辺を、連続する同一の直線で描画することが好ましい。 In the method for manufacturing a photoelectric conversion device of the present invention, it is preferable that at least one side of the adjacent closed loop portions is drawn by the same continuous straight line.

また、本発明の光電変換装置の製造方法にあっては、前記シール材塗布工程は、前記シールパターンの始点及び終点が、前記閉ループ部の外側に位置するように該シールパターンを描画することが好ましい。 Further, in the photoelectric conversion device manufacturing method of the present invention, the seal material applying step may draw the seal pattern such that the start point and the end point of the seal pattern are located outside the closed loop portion. preferable.

また、本発明の光電変換装置の製造方法にあっては、前記シールパターンは、直線部と屈曲部とで構成され、
前記シール材塗布工程は、前記屈曲部が、前記閉ループ部の外側に位置するように該シールパターンを描画することが好ましい。 Further, in the method for manufacturing a photoelectric conversion device of the present invention, the seal pattern is composed of a linear portion and a bent portion,
In the sealing material applying step, it is preferable that the seal pattern is drawn so that the bent portion is located outside the closed loop portion.

また、本発明の光電変換装置の製造方法にあっては、
前記第１基板には、縦方向及び横方向にそれぞれ複数の光電変換素子が配列されており、
前記シール材塗布工程の前記閉ループ部が矩形となっており、
横方向に配列される全ての前記閉ループ部における少なくとも一方側の辺を、連続する同一の直線で描画することが好ましい。 Further, in the method for manufacturing the photoelectric conversion device of the present invention,
On the first substrate, a plurality of photoelectric conversion elements are arranged in the vertical direction and the horizontal direction, respectively,
The closed loop portion of the sealing material applying step is rectangular,
It is preferable that at least one side of all the closed loop portions arranged in the horizontal direction is drawn by the same continuous straight line.

また、本発明の光電変換装置の製造方法にあっては、
前記第１基板には、縦方向及び横方向にそれぞれ複数の光電変換素子が配列されており、
前記シール材塗布工程の前記閉ループ部が矩形となっており、
縦方向に配列される全ての前記閉ループ部における少なくとも一方側の辺を、連続する同一の直線で描画することが好ましい。 Further, in the method for manufacturing the photoelectric conversion device of the present invention,
On the first substrate, a plurality of photoelectric conversion elements are arranged in the vertical direction and the horizontal direction, respectively,
The closed loop portion of the sealing material applying step is rectangular,
It is preferable that at least one side of all the closed loop portions arranged in the vertical direction is drawn by the same continuous straight line.

本発明によれば、基板上に配列された光電変換素子の外形に近接する位置に、閉ループ状のシールを形成する為のシール材を塗布するディスペンサ制御が容易な、光電変換装置の製造方法を提供することができる。 According to the present invention, a method for manufacturing a photoelectric conversion device, which is easy to control a dispenser for applying a sealing material for forming a closed-loop seal at a position close to the outer shape of a photoelectric conversion element arranged on a substrate, is provided. Can be provided.

本発明の一実施形態において、光電変換素子が配列された基板上に形成されるシールパターンを示す平面図である。FIG. 6 is a plan view showing a seal pattern formed on a substrate on which photoelectric conversion elements are arranged in one embodiment of the present invention. 光電変換素子が配列された基板上に形成されるシールパターンの変形例を示す図である。It is a figure which shows the modification of the seal pattern formed on the board|substrate with which the photoelectric conversion element was arranged. 光電変換素子が配列された基板上に形成されるシールパターンの他の変形例を示す図である。It is a figure which shows the other modification of the seal pattern formed on the board|substrate with which the photoelectric conversion element was arranged.

以下、本発明の一実施形態について、図面を参照しつつ説明する。図１は、間隔をおいて配列された複数の矩形の光電変換素子１１〜１８を備える第１基板１０上に、ディスペンサから吐出されるシール材（シール剤）を塗布することによって形成されるシールパターンＰ１の描画経路を示した平面図である。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a seal formed by applying a seal material (sealant) discharged from a dispenser on a first substrate 10 having a plurality of rectangular photoelectric conversion elements 11 to 18 arranged at intervals. It is a top view showing the drawing path of pattern P1.

シール材としては、例えば、熱可塑性樹脂、熱硬化性樹脂、活性放射線（光、電子線）硬化性樹脂がある。素材としては、アクリル系樹脂、フッ素系樹脂、シリコン系樹脂、オレフィン系樹脂、ポリアミド樹脂等がある。取扱い性に優れるという観点から、光硬化性アクリル系樹脂を使用することができるが、これに限定されない。 Examples of the sealing material include a thermoplastic resin, a thermosetting resin, and an actinic radiation (light, electron beam) curable resin. Examples of the material include acrylic resin, fluorine resin, silicon resin, olefin resin, polyamide resin and the like. From the viewpoint of excellent handleability, a photocurable acrylic resin can be used, but it is not limited to this.

第１基板１０は、例えば、厚さが50μｍ以上、1000μｍ以下の矩形の樹脂フィルムと、当該樹脂フィルムに積層配置された厚さが50ｎｍ以上、1000ｎｍ以下の矩形の透明導電膜とで構成されたものとすることができるが、これに限定されず、第１基板１０の形状、厚さ、及び材質等は適宜変更可能である。 The first substrate 10 is composed of, for example, a rectangular resin film having a thickness of 50 μm or more and 1000 μm or less, and a rectangular transparent conductive film having a thickness of 50 nm or more and 1000 nm or less laminated and arranged on the resin film. However, the shape, the thickness, the material, and the like of the first substrate 10 can be appropriately changed.

光電変換素子１１〜１８（セル）は、電解質、半導体膜等を有するものとすることができるが、これに限定されない。 The photoelectric conversion elements 11 to 18 (cells) can have an electrolyte, a semiconductor film, and the like, but are not limited thereto.

第１基板１０の一方の面には、２行、４列の合計８個の光電変換素子１１〜１８が配列されている。より具体的に、図１における上方には、第１光電変換素子１１、第２光電変換素子１２、第３光電変換素子１３、第４光電変換素子１４が横方向に等間隔で配置され、その下方には、第５光電変換素子１５、第６光電変換素子１６、第７光電変換素子１７、第８光電変換素子１８が横方向に等間隔で配置されている。 On one surface of the first substrate 10, a total of eight photoelectric conversion elements 11 to 18 arranged in two rows and four columns are arranged. More specifically, the first photoelectric conversion element 11, the second photoelectric conversion element 12, the third photoelectric conversion element 13, and the fourth photoelectric conversion element 14 are arranged at equal intervals in the horizontal direction in the upper part of FIG. The fifth photoelectric conversion element 15, the sixth photoelectric conversion element 16, the seventh photoelectric conversion element 17, and the eighth photoelectric conversion element 18 are arranged below the lower portion in the horizontal direction at equal intervals.

また、第１光電変換素子１１と第５光電変換素子１５とは縦方向に間隔をあけて配列されている。同様に、第２光電変換素子１２と第６光電変換素子１６とが縦方向に間隔をあけて配列され、第３光電変換素子１３と第７光電変換素子１７とが縦方向に間隔をあけて配列され、第４光電変換素子１４と第８光電変換素子１８とが縦方向に間隔をあけて配列されている。 Moreover, the 1st photoelectric conversion element 11 and the 5th photoelectric conversion element 15 are arranged at intervals in the vertical direction. Similarly, the second photoelectric conversion element 12 and the sixth photoelectric conversion element 16 are arranged at intervals in the vertical direction, and the third photoelectric conversion element 13 and the seventh photoelectric conversion element 17 are separated at the vertical direction. The fourth photoelectric conversion elements 14 and the eighth photoelectric conversion elements 18 are arranged in the vertical direction with a space therebetween.

図１に示すように、本例のディスペンサによるシールパターンＰ１は、始点Ｓから終点Ｅまで連続する一筆書き状に構成されている。なお、シールパターンＰ１の始点Ｓと終点Ｅとは相互に異なる位置に配置されており、また、始点Ｓと終点Ｅは、各光電変換素子１１〜１８の周囲をそれぞれ取囲む第１閉ループ部Ｒ１〜第８閉ループ部Ｒ８の閉ループ部の外側に配置されている。また、シールパターンＰ１の始点Ｓ及び終点Ｅは、第１基板１０の外側に配置されている。 As shown in FIG. 1, the seal pattern P1 formed by the dispenser of the present example is formed in a continuous stroke from the start point S to the end point E. The start point S and the end point E of the seal pattern P1 are arranged at mutually different positions, and the start point S and the end point E are the first closed loop portions R1 surrounding the photoelectric conversion elements 11 to 18, respectively. ~ It is arranged outside the closed loop portion of the eighth closed loop portion R8. The start point S and the end point E of the seal pattern P1 are arranged outside the first substrate 10.

シールパターンＰ１の描画経路は、始点Ｓから順に、第１直線部Ｌ１〜第２３直線部Ｌ２３まで直線部と、各直線部から次の直線部に向けて方向が変化する部分（曲がる部分）に位置する第１屈曲部Ｂ１〜第２２屈曲部Ｂ２２までの屈曲部とで構成されている。なお、各屈曲部Ｂ１〜Ｂ２２は、必ずしも直角に屈曲する必要はなく、湾曲していてもよい。第１屈曲部Ｂ１〜第２２屈曲部Ｂ２２は、各閉ループ部（第１閉ループ部Ｒ１〜第８閉ループ部Ｒ８）の内側には配置されず、各閉ループ部の外側に配置されている。なお、本例において、第１７屈曲部Ｂ１７〜第２２屈曲部Ｂ２２は、第１基板１０の外側に配置されている。 The drawing path of the seal pattern P1 is, in order from the starting point S, a straight line portion from the first straight line portion L1 to the 23rd straight line portion L23, and a portion (bent portion) where the direction changes from each straight line portion to the next straight line portion. The first bending portion B1 to the 22nd bending portion B22 which are located are formed. The bent portions B1 to B22 do not necessarily need to be bent at a right angle, and may be curved. The first bent portion B1 to the 22nd bent portion B22 are not arranged inside each closed loop portion (first closed loop portion R1 to eighth closed loop portion R8), but are arranged outside each closed loop portion. In addition, in the present example, the seventeenth bent portion B17 to the twenty-second bent portion B22 are arranged outside the first substrate 10.

シールパターンＰ１は、光電変換素子１１〜１８の周囲をそれぞれ隙間なく取囲む矩形の第１閉ループ部Ｒ１〜第８閉ループ部Ｒ８を有する。具体的に、例えば第１閉ループ部Ｒ１は、第１光電変換素子１１の周囲を隙間なく取り囲んでいる。 The seal pattern P1 has rectangular first closed loop portions R1 to eighth closed loop portions R8 that surround the photoelectric conversion elements 11 to 18 with no space therebetween. Specifically, for example, the first closed loop portion R1 surrounds the periphery of the first photoelectric conversion element 11 without any space.

第１閉ループ部Ｒ１は、シールパターンＰ１の第２直線部Ｌ２、第２１直線部Ｌ２１、第４直線部Ｌ４、及び第１９直線部Ｌ１９により形成されている。また、第１閉ループ部Ｒ１は、第１角部Ｃ１〜第４角部Ｃ４を有する。第１角部Ｃ１は、直交する第４直線部Ｌ４と第１９直線部Ｌ１９との交点に形成され、第２角部Ｃ２は、直交する第１９直線部Ｌ１９と第２直線部Ｌ２との交点に形成され、第３角部Ｃ３は、直交する第２直線部Ｌ２と第２１直線部Ｌ２１との交点に形成され、第４角部Ｃ４は、直交する第２１直線部Ｌ２１と第４直線部Ｌ４との交点に形成される。このように、第１閉ループ部Ｒ１における４つの角部（第１角部Ｃ１〜第４角部Ｃ４）は全て、直交する２本の直線部（Ｌ４、Ｌ１９、Ｌ２、Ｌ２１）が交差することにより形成されており、ディスペンス時にシール材を曲げて形成する屈曲部（第１屈曲部Ｂ１〜第２２屈曲部Ｂ２２）で構成されていない。 The first closed loop portion R1 is formed by the second straight line portion L2, the twenty-first straight line portion L21, the fourth straight line portion L4, and the nineteenth straight line portion L19 of the seal pattern P1. In addition, the first closed loop portion R1 has a first corner portion C1 to a fourth corner portion C4. The first corner C1 is formed at the intersection of the fourth straight line portion L4 and the nineteenth straight line portion L19 which are orthogonal to each other, and the second corner C2 is the crossing point of the nineteenth straight line portion L19 and the second straight line portion L2 which are orthogonal to each other. The third corner C3 is formed at the intersection of the second straight line portion L2 and the twenty-first straight line portion L21 which are orthogonal to each other, and the fourth corner portion C4 is the twenty-first straight line portion L21 and the fourth straight line portion which are orthogonal to each other. It is formed at the intersection with L4. As described above, all of the four corners (first corner C1 to fourth corner C4) in the first closed loop part R1 should intersect with two straight line parts (L4, L19, L2, L21) orthogonal to each other. And is not formed of bent portions (first bent portion B1 to 22nd bent portion B22) formed by bending the sealing material during dispensing.

第１閉ループ部Ｒ１と同様に、他の閉ループ部（第２閉ループ部Ｒ２〜第８閉ループ部Ｒ８）も、すべてシールパターンＰ１の直線部のみで取囲むように形成されており、各閉ループ部における４つの角部は全て、直交する２本の直線部が交差することにより形成されている。第２閉ループ部Ｒ２は、第５角部Ｃ５〜第８角部Ｃ８を有し、第３閉ループ部Ｒ３は、第９角部Ｃ９〜第１２角部Ｃ１２を有し、第４閉ループ部Ｒ４は、第１３角部Ｃ１３〜第１６角部Ｃ１６を有し、第５閉ループ部Ｒ５は、第１７角部Ｃ１７〜第２０角部Ｃ２０を有し、第６閉ループ部Ｒ６は、第２１角部Ｃ２１〜第２４角部Ｃ２４を有し、第７閉ループ部Ｒ７は、第２５角部Ｃ２５〜第２８角部Ｃ２８を有し、第８閉ループ部Ｒ８は、第２９角部Ｃ２９〜第３２角部Ｃ３２を有する。なお、第１閉ループ部Ｒ１〜第８閉ループ部Ｒ８における全ての角部Ｃ１〜Ｃ３２のうちの一部が、２本の直線部が交差することにより形成されていればよい。 Similar to the first closed loop portion R1, the other closed loop portions (second closed loop portion R2 to eighth closed loop portion R8) are also formed so as to be surrounded only by the straight portion of the seal pattern P1, and in each closed loop portion. All four corners are formed by intersecting two straight line parts that intersect at right angles. The second closed loop portion R2 has a fifth corner portion C5 to an eighth corner portion C8, the third closed loop portion R3 has a ninth corner portion C9 to a twelfth corner portion C12, and the fourth closed loop portion R4 is , The thirteenth corner C13 to the sixteenth corner C16, the fifth closed loop portion R5 has the seventeenth corner C17 to the twentieth corner C20, and the sixth closed loop portion R6 is the twenty-first corner C21. To the 24th corner C24, the seventh closed loop R7 has the 25th corner C25 to the 28th corner C28, and the eighth closed loop R8 includes the 29th corner C29 to the 32nd corner C32. Have. In addition, a part of all the corners C1 to C32 in the first closed loop portion R1 to the eighth closed loop portion R8 may be formed by intersecting two straight line portions.

また、横方向に隣接する第１閉ループ部Ｒ１、第２閉ループ部Ｒ２、第３閉ループ部Ｒ３、及び第４閉ループ部Ｒ４の全ての下辺（下側に位置する辺）は、同一の連続した直線部である第２１直線部Ｌ２１で構成されている。また、第１閉ループ部Ｒ１、第２閉ループ部Ｒ２、第３閉ループ部Ｒ３、及び第４閉ループ部Ｒ４の全ての上辺（上側に位置する辺）は、同一の連続した直線部である第１９直線部Ｌ１９で構成されている。同様に、横方向に隣接する第５閉ループ部Ｒ５〜第８閉ループ部Ｒ８の全ての下辺は、同一の連続した直線部である第２３直線部Ｌ２３で構成され、全ての上辺は、同一の連続した直線部である第２１直線部Ｌ２１で構成されている。 Further, all the lower sides (sides located on the lower side) of the first closed loop portion R1, the second closed loop portion R2, the third closed loop portion R3, and the fourth closed loop portion R4 that are laterally adjacent to each other are the same continuous straight line. It is configured by a 21st straight line portion L21 which is a portion. In addition, all the upper sides (sides located on the upper side) of the first closed loop portion R1, the second closed loop portion R2, the third closed loop portion R3, and the fourth closed loop portion R4 are the same continuous straight line portion, the nineteenth straight line portion. It is composed of the part L19. Similarly, the lower sides of all of the fifth closed loop portion R5 to the eighth closed loop portion R8 that are laterally adjacent to each other are configured by the 23rd linear portion L23 that is the same continuous linear portion, and all the upper sides are the same continuous portion. The 21st straight line portion L21 which is the straight line portion is formed.

また、縦方向に隣接する第１閉ループ部Ｒ１及び第５閉ループ部Ｒ５の左側に位置する辺は、同一の連続した直線部である第４直線部Ｌ４で構成されている。同様に、第１閉ループ部Ｒ１及び第５閉ループ部Ｒ５の右側に位置する辺は、同一の連続した直線部である第２直線部Ｌ２で構成されている。 Moreover, the side located on the left side of the first closed loop portion R1 and the fifth closed loop portion R5 that are adjacent to each other in the vertical direction is configured by a fourth straight line portion L4 that is the same continuous straight line portion. Similarly, the sides located on the right side of the first closed loop portion R1 and the fifth closed loop portion R5 are formed by the second straight line portion L2 that is the same continuous straight line portion.

本実施形態における光電変換装置の製造方法は、上記光電変換素子１１〜１８を備える第１基板１０に、ディスペンサでシール材を塗布することでシールパターンＰ１を描画するシール材塗布工程と、シール材塗布工程後の第１基板１０に、光電変換素子１１〜１８及びシール材（シールパターンＰ１）を挟むように第２基板を重ね合わせ、シール材を硬化することにより、第１基板１０と前記第２基板とを接合する基板接合工程と、を含むものである。また、シール材塗布工程は、シールパターンＰ１が光電変換素子１１〜１８の周囲をそれぞれ取囲む矩形の閉ループ部Ｒ１〜Ｒ８を形成し、各閉ループ部Ｒ１〜Ｒ８が、シールパターンＰ１における２本の直線部Ｌ１〜Ｌ２３が交差することにより形成される角部Ｃ１〜Ｃ３２を有し、隣接する閉ループ部Ｒ１〜Ｒ８における少なくとも一方側の辺を、連続する同一の直線で描画する工程を含む。 The method for manufacturing a photoelectric conversion device according to the present embodiment includes a seal material applying step of drawing a seal pattern P1 by applying a seal material with a dispenser on the first substrate 10 including the photoelectric conversion elements 11 to 18, and a seal material. The second substrate is superposed on the first substrate 10 after the coating step so as to sandwich the photoelectric conversion elements 11 to 18 and the sealing material (seal pattern P1), and the sealing material is cured, whereby the first substrate 10 and the first substrate 10 A substrate bonding step of bonding two substrates. In the sealing material application step, the seal pattern P1 forms rectangular closed loop portions R1 to R8 surrounding the photoelectric conversion elements 11 to 18, respectively, and each closed loop portion R1 to R8 has two portions in the seal pattern P1. The method includes a step of drawing at least one side of adjacent closed loop portions R1 to R8 with the same continuous straight line, which has corner portions C1 to C32 formed by intersecting straight line portions L1 to L23.

本実施形態における光電変換装置の製造方法にあっては、閉ループ部Ｒ１〜Ｒ８の角部Ｃ１〜Ｃ３２を、直線部Ｌ１〜Ｌ２３の交差により形成したことで、シールパターンＰ１の屈曲部Ｂ１〜Ｂ２２の数を低減することができる。つまり、光電変換装置を取囲む閉ループ部の角部を屈曲部で形成する場合に比べて、シール材を塗布（ディスペンス）する際の、曲げの回数を減らすことができる。これにより、描画時のディスペンサの加減速の回数を削減できるので塗布量の変動によるシールパターンＰ１の均一性低下を抑制することができる。また、各閉ループ部Ｒ１〜Ｒ８を構成する１辺をすべて同一の条件（塗布速度、吐出圧力、基板からの距離（高さ）等の条件）で描画することができ、吐出量の制御も容易になる。このように、本実施形態における光電変換装置の製造方法にあっては、シール材を塗布するディスペンサの複雑な制御が不要となり、その結果、タクトタイムが向上する。また、装置への負荷も軽減されるため、装置剛性を適度に下げることができ、装置のコスト上昇を抑制することができる。 In the method for manufacturing the photoelectric conversion device according to the present embodiment, the corner portions C1 to C32 of the closed loop portions R1 to R8 are formed by the intersections of the straight line portions L1 to L23, so that the bent portions B1 to B22 of the seal pattern P1 are formed. Can be reduced. That is, the number of times of bending when applying (dispensing) the seal material can be reduced as compared with the case where the corner portion of the closed loop portion surrounding the photoelectric conversion device is formed by the bent portion. This can reduce the number of times of acceleration/deceleration of the dispenser at the time of drawing, so that it is possible to suppress the deterioration of the uniformity of the seal pattern P1 due to the variation of the coating amount. Further, one side forming each of the closed loop portions R1 to R8 can be drawn under the same conditions (conditions such as coating speed, discharge pressure, distance (height) from the substrate), and the discharge amount can be easily controlled. become. As described above, in the method of manufacturing the photoelectric conversion device according to the present embodiment, complicated control of the dispenser for applying the sealing material is not required, and as a result, the takt time is improved. Further, since the load on the device is also reduced, the rigidity of the device can be appropriately reduced, and the cost increase of the device can be suppressed.

また、本実施形態における光電変換装置の製造方法にあっては、閉ループ部Ｒ１〜Ｒ８の角部Ｃ１〜Ｃ３２を、直線部Ｌ１〜Ｌ２３が重なる交差部分で形成したことで、角部Ｃ１〜Ｃ３２のディスペンス量が２倍となり、シール材の面積が増大するため、応力が集中し易い当該角部からの電解液等の液漏れを確実に抑制することができる。 In the method for manufacturing the photoelectric conversion device according to the present embodiment, the corner portions C1 to C32 of the closed loop portions R1 to R8 are formed at the intersections where the straight line portions L1 to L23 overlap each other, so that the corner portions C1 to C32 are formed. Since the amount of dispensing is doubled and the area of the sealing material is increased, it is possible to reliably suppress the leakage of the electrolytic solution or the like from the corner portion where stress is likely to concentrate.

また、本実施形態における光電変換装置の製造方法にあっては、閉ループ部Ｒ１〜Ｒ８の角部Ｃ１〜Ｃ３２を、直線部Ｌ１〜Ｌ２３の交差により形成したことで、角部Ｃ１〜Ｃ３２をディスペンスで描画する（角部をシールパターンの屈曲部で形成する）場合のように角部が外側に膨らむ（湾曲する）ことを抑制することができる。その結果、光電変換素子１１〜１８に近接する位置に閉ループ部Ｒ１〜Ｒ８をシールパターンＰ１で描画して形成することができる。また、隣接する光電変換素子１１〜１８同士の位置が近い場合には、隣接する光電変換素子１１〜１８の間に位置するシールパターンの直線部を当該隣接する２つの光電変換素子１１〜１８で共有することができる。本例では、例えば、縦方向に隣接する第１光電変換素子１１と第５光電変換素子１５をそれぞれ取り囲む第１閉ループ部Ｒ１と第５閉ループ部Ｒ５とが、第２１直線部Ｌ２１を共有している。このように、本実施形態では、光電変換素子１１〜１８同士を近接配置することができるので、色素増感太陽電池（ＤＳＣ）などの用途で、一定面積により多くのセルを配置することによって、より大きな電流や電圧を発生させる構成とした場合には特に有効となる。 Further, in the method for manufacturing the photoelectric conversion device according to the present embodiment, the corner portions C1 to C32 of the closed loop portions R1 to R8 are formed by the intersections of the straight line portions L1 to L23, so that the corner portions C1 to C32 are dispensed. It is possible to prevent the corners from bulging (curving) outward as in the case of drawing with (the corners are formed by the bent portions of the seal pattern). As a result, the closed loop portions R1 to R8 can be formed by drawing the seal pattern P1 at positions close to the photoelectric conversion elements 11 to 18. Moreover, when the positions of the adjacent photoelectric conversion elements 11 to 18 are close to each other, the straight line portion of the seal pattern located between the adjacent photoelectric conversion elements 11 to 18 is defined by the two adjacent photoelectric conversion elements 11 to 18. Can be shared. In the present example, for example, the first closed loop portion R1 and the fifth closed loop portion R5, which respectively surround the first photoelectric conversion element 11 and the fifth photoelectric conversion element 15 that are vertically adjacent to each other, share the twenty-first straight portion L21. There is. As described above, in the present embodiment, since the photoelectric conversion elements 11 to 18 can be arranged close to each other, by arranging a large number of cells in a certain area in applications such as a dye-sensitized solar cell (DSC), This is particularly effective when configured to generate a larger current or voltage.

また、本実施形態における光電変換装置の製造方法にあっては、閉ループ部Ｒ１〜Ｒ８をそれぞれ独立してディスペンサで描画せずに、閉ループ部Ｒ１〜Ｒ８の各辺よりも長い直線部Ｌ１〜Ｌ２３を交差させて形成したことで、シールパターンＰ１の始点Ｓ及び終点Ｅの数を減らすことができる。特に本例では、シールパターンＰ１の始点Ｓから終点Ｅまで一筆書き状に描画する構成としたことで、始点Ｓ及び終点Ｅをそれぞれ１つずつ、すなわち最小限数としている。その結果、始点Ｓにおけるディスペンサ内部の詰まり、及び、終点Ｅでの糸曳きに起因する問題を軽減することができる。さらに、閉ループ部Ｒ１〜Ｒ８を独立してディスペンサで描画せずに、閉ループ部Ｒ１〜Ｒ８の各辺よりも長い直線部Ｌ１〜Ｌ２３を交差させて形成したことで、シールパターンＰ１の始点Ｓ及び終点Ｅを閉ループ部Ｒ１〜Ｒ８の外側に配置することができる。本例では、シールパターンＰ１の始点Ｓ及び終点Ｅを第１基板１０の外側に配置したことで、始点Ｓにおけるディスペンサ内部の詰まり、及び、終点Ｅでの糸曳きに起因する問題をさらに抑制することができる。 Further, in the method for manufacturing the photoelectric conversion device according to the present embodiment, the linear portions L1 to L23 longer than the respective sides of the closed loop portions R1 to R8 are not individually drawn by the dispenser to form the closed loop portions R1 to R8. By intersecting and forming, the number of start points S and end points E of the seal pattern P1 can be reduced. In particular, in this example, since the seal pattern P1 is drawn from the starting point S to the ending point E in a single stroke, the starting point S and the ending point E are each one, that is, the minimum number. As a result, it is possible to reduce problems caused by clogging inside the dispenser at the start point S and stringing at the end point E. Further, the closed loop portions R1 to R8 are not independently drawn by the dispenser, and the straight line portions L1 to L23 longer than the respective sides of the closed loop portions R1 to R8 are formed to intersect with each other, so that the start point S of the seal pattern P1 and The end point E can be arranged outside the closed loop parts R1 to R8. In this example, the start point S and the end point E of the seal pattern P1 are arranged outside the first substrate 10, so that problems caused by clogging inside the dispenser at the start point S and threading at the end point E are further suppressed. be able to.

また、本実施形態では、第１基板１０に、縦方向及び横方向にそれぞれ複数の光電変換素子１１〜１８が配列され、シール材塗布工程は、横方向に配列される全ての閉ループ部Ｒ１〜Ｒ８における少なくとも一方側の辺を、連続する同一の直線で描画する構成としたことにより、シールパターンＰ１の屈曲部Ｂ１〜Ｂ２２の数を低減することができ、より効率的に閉ループ部Ｒ１〜Ｒ８を形成することができ、ディスペンサの制御も容易となる。 Further, in the present embodiment, a plurality of photoelectric conversion elements 11 to 18 are arranged on the first substrate 10 in the vertical direction and the horizontal direction, respectively, and the sealing material applying step includes all the closed loop portions R1 to R1 arranged in the horizontal direction. Since at least one side of R8 is drawn with the same continuous straight line, the number of bent portions B1 to B22 of the seal pattern P1 can be reduced, and the closed loop portions R1 to R8 can be more efficiently formed. Can be formed, and the dispenser can be easily controlled.

また、本実施形態では、シール材塗布工程において、縦方向に配列される全ての閉ループ部Ｒ１〜Ｒ８における少なくとも一方側の辺を、連続する同一の直線で描画する構成としたことにより、さらに効率的に閉ループ部Ｒ１〜Ｒ８を形成することができ、ディスペンサの制御も容易となる。 Further, in the present embodiment, in the sealing material application step, at least one side of all the closed loop portions R1 to R8 arranged in the vertical direction is drawn with the same continuous straight line, thereby further improving the efficiency. Therefore, the closed loop portions R1 to R8 can be formed, and the dispenser can be easily controlled.

また、本実施形態では、シール材塗布工程において、シールパターンＰ１の始点Ｓから終点Ｅまでを連続する一筆書き状に描画する構成としたことにより、ディスペンサのシール材の吐出、停止等の制御が少なくなり、制御がさらに容易となる。また、シールパターンＰ１の始点Ｓから終点Ｅまで一筆書き状に描画する構成としたことで、上述の通り、始点Ｓでのディスペンサ内部の詰まり、及び、終点Ｅでの糸曳きに起因する問題を軽減することができる。 In addition, in the present embodiment, in the sealing material applying step, the starting point S to the ending point E of the seal pattern P1 is drawn in a continuous one-stroke form, so that the control of discharging and stopping the sealing material of the dispenser can be performed. Fewer and easier to control. In addition, since the seal pattern P1 is drawn in a single-stroke form from the starting point S to the ending point E, as described above, the problem caused by the clogging of the inside of the dispenser at the starting point S and the stringing at the ending point E occurs. Can be reduced.

また、本実施形態では、シール材塗布工程において、シールパターンＰ１の始点Ｓ及び終点Ｅが閉ループ部Ｒ１〜Ｒ８の外側に位置するようにシールパターンＰ１を描画する構成としたため、シールパターンＰ１の始点Ｓでのディスペンサ内部の詰まり、及び、終点Ｅでの糸曳きに起因する影響を、閉ループ部Ｒ１〜Ｒ８の内側に与えないようにすることができる。 Further, in the present embodiment, since the seal pattern P1 is drawn so that the start point S and the end point E of the seal pattern P1 are located outside the closed loop portions R1 to R8 in the seal material applying step, the start point of the seal pattern P1 is set. It is possible to prevent the inside of the closed loop portions R1 to R8 from being affected by the clogging inside the dispenser at S and the stringing at the end point E.

また、本実施形態では、シールパターンＰ１が直線部Ｌ１〜Ｌ２３と屈曲部Ｂ１〜Ｂ２２とで構成され、シール材塗布工程において、屈曲部Ｂ１〜Ｂ２２が、閉ループ部Ｒ１〜Ｒ８の外側に位置するようにシールパターンＰ１を描画する構成としているため、光電変換素子１１〜１８に近接する位置に閉ループ部Ｒ１〜Ｒ８を形成することができ、また、隣接する光電変換素子１１〜１８同士もより近い位置に配置することができる。 Further, in the present embodiment, the seal pattern P1 is composed of the straight line portions L1 to L23 and the bent portions B1 to B22, and the bent portions B1 to B22 are located outside the closed loop portions R1 to R8 in the seal material applying step. Since the seal pattern P1 is drawn as described above, the closed loop portions R1 to R8 can be formed at positions close to the photoelectric conversion elements 11 to 18, and the adjacent photoelectric conversion elements 11 to 18 are also closer to each other. Can be placed in position.

図２、３は、本発明の変形例を示している。なお、上述した実施形態と基本的な機能が同一である部分は、図中、同一の符号を付して説明を省略する。 2 and 3 show a modification of the present invention. It should be noted that parts having the same basic functions as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof will be omitted.

図２は、シールパターンＰ２の描画経路を示した平面図である。シールパターンＰ２は、それぞれ一筆書き状に連続する第１シールパターンＰ２１と第２シールパターンＰ２２とで構成されている。なお、第１シールパターンＰ２１と第２シールパターンＰ２２とを連続させてシールパターンＰ２全体を一筆書き状に形成してもよい。 FIG. 2 is a plan view showing a drawing path of the seal pattern P2. The seal pattern P2 is composed of a first seal pattern P21 and a second seal pattern P22 that are continuous in a single stroke. The first seal pattern P21 and the second seal pattern P22 may be continuous to form the entire seal pattern P2 in a single stroke.

第１シールパターンＰ２１は、直線部Ｌ１〜Ｌ１２と、屈曲部Ｂ１〜Ｂ１２とを有する。なお、第１シールパターンＰ２１の始点及び終点の位置は、例えば屈曲部Ｂ１２の位置とすることができるが、閉ループ部Ｒ１〜Ｒ６の外側であれば特に限定されない。 The first seal pattern P21 has straight line portions L1 to L12 and bent portions B1 to B12. The positions of the start point and the end point of the first seal pattern P21 can be, for example, the position of the bent portion B12, but are not particularly limited as long as they are outside the closed loop portions R1 to R6.

第２シールパターンＰ２２は、直線部Ｌ１３〜Ｌ１８と、屈曲部Ｂ１３〜Ｂ１８とを有する。なお、第２シールパターンＰ２２の始点及び終点の位置は、例えば屈曲部Ｂ１８の位置とすることができるが、閉ループ部Ｒ１〜Ｒ６の外側であれば特に限定されない。 The second seal pattern P22 has straight line portions L13 to L18 and bent portions B13 to B18. The positions of the start point and the end point of the second seal pattern P22 may be, for example, the position of the bent portion B18, but are not particularly limited as long as they are outside the closed loop portions R1 to R6.

シールパターンＰ２は、三角形の光電変換素子２１〜２６の周囲をそれぞれ隙間なく取囲む三角形の閉ループ部Ｒ１〜Ｒ６を有する。例えば、閉ループ部Ｒ１は、直線部Ｌ１１、直線部Ｌ１３、及び直線部Ｌ１７によって形成され、光電変換素子２１を隙間なく取囲んでいる。各閉ループ部Ｒ１〜Ｒ６は、各光電変換素子２１〜２６に対応する形状（本例では三角形）となっている。閉ループ部Ｒ１〜Ｒ６の全ての角部Ｃ１〜Ｃ１８が、２本の直線部が交差することにより形成される。 The seal pattern P2 has triangular closed loop portions R1 to R6 surrounding the triangular photoelectric conversion elements 21 to 26 with no space therebetween. For example, the closed loop part R1 is formed by the linear part L11, the linear part L13, and the linear part L17, and surrounds the photoelectric conversion element 21 without a gap. Each closed loop portion R1 to R6 has a shape (triangle in this example) corresponding to each photoelectric conversion element 21 to 26. All corner portions C1 to C18 of the closed loop portions R1 to R6 are formed by intersecting two straight line portions.

本例においても、図１に示す形態と同様の作用効果を得ることができる。すなわち、光電変換素子２１〜２６の外形に近接する位置に、複数の直線部からなる閉ループ状のシールを形成することができる。そして、シール材を塗布するディスペンサ制御が容易となる。 Also in this example, it is possible to obtain the same effects as those of the embodiment shown in FIG. That is, it is possible to form a closed loop-shaped seal including a plurality of straight line portions at a position close to the outer shapes of the photoelectric conversion elements 21 to 26. Then, the dispenser control for applying the sealing material becomes easy.

図３は、シールパターンＰ３の描画経路を示した平面図である。シールパターンＰ３は、それぞれ一筆書き状に連続する第１シールパターンＰ３１と第２シールパターンＰ３２とで構成されている。なお、第１シールパターンＰ３１と第２シールパターンＰ３２とを直線部Ｌ１５で連続させてシールパターンＰ３全体を一筆書き状に形成してもよい。その場合、屈曲部Ｂ１３、１４が形成される。 FIG. 3 is a plan view showing a drawing path of the seal pattern P3. The seal pattern P3 is composed of a first seal pattern P31 and a second seal pattern P32, which are continuous in a single stroke. The first seal pattern P31 and the second seal pattern P32 may be continuous at the straight line portion L15 so that the entire seal pattern P3 is formed in a single stroke. In that case, the bent portions B13 and B14 are formed.

第１シールパターンＰ３１は、直線部Ｌ１〜Ｌ１１と、屈曲部Ｂ１〜Ｂ１０とを有する。第１シールパターンＰ３１の始点Ｓ３１及び終点Ｅ３１は、図３に示す位置とすることができるが、閉ループ部Ｒ１〜Ｒ５の外側であれば特に限定されない。 The first seal pattern P31 has straight line portions L1 to L11 and bent portions B1 to B10. The start point S31 and the end point E31 of the first seal pattern P31 can be the positions shown in FIG. 3, but are not particularly limited as long as they are outside the closed loop portions R1 to R5.

第２シールパターンＰ３２は、直線部Ｌ１２〜Ｌ１４と、屈曲部Ｂ１１〜Ｂ１２とを有する。第２シールパターンＰ３２の始点Ｓ３２及び終点Ｅ３２は、図３に示す位置とすることができるが、閉ループ部Ｒ１〜Ｒ５の外側であれば特に限定されない。 The second seal pattern P32 has straight line portions L12 to L14 and bent portions B11 to B12. The starting point S32 and the ending point E32 of the second seal pattern P32 can be the positions shown in FIG. 3, but are not particularly limited as long as they are outside the closed loop portions R1 to R5.

シールパターンＰ３は、三角形の光電変換素子３１〜３５の周囲をそれぞれ隙間なく取囲む三角形の閉ループ部Ｒ１〜Ｒ５を有する。例えば、閉ループ部Ｒ１は、直線部Ｌ１、直線部Ｌ３、及び直線部Ｌ１４によって形成され、光電変換素子３１を隙間なく取囲んでいる。各閉ループ部Ｒ１〜Ｒ５は、各光電変換素子３１〜３５に対応する形状（本例では三角形）となっている。また、閉ループ部Ｒ１〜Ｒ５の全ての角部Ｃ１〜Ｃ１５が、２本の直線部が交差することにより形成される。 The seal pattern P3 has triangular closed loop portions R1 to R5 that surround the peripheries of the triangular photoelectric conversion elements 31 to 35 without any gaps. For example, the closed loop part R1 is formed by the linear part L1, the linear part L3, and the linear part L14, and surrounds the photoelectric conversion element 31 without a gap. Each closed loop part R1 to R5 has a shape (triangle in this example) corresponding to each photoelectric conversion element 31 to 35. Further, all the corner portions C1 to C15 of the closed loop portions R1 to R5 are formed by intersecting two straight line portions.

本例においても、図１、２に示す形態と同様の作用効果を得ることができる。すなわち、光電変換素子３１〜３５の外形に近接する位置に、複数の直線部からなる閉ループ状のシールを形成することができる。そして、シール材を塗布するディスペンサ制御が容易となる。 Also in this example, it is possible to obtain the same effect as that of the embodiment shown in FIGS. That is, it is possible to form a closed loop-shaped seal including a plurality of straight line portions at a position close to the outer shapes of the photoelectric conversion elements 31 to 35. Then, the dispenser control for applying the sealing material becomes easy.

本発明は、上述した実施形態の構成に限定されるものではなく、特許請求の範囲で記載された内容を逸脱しない範囲で、様々な構成により実現することが可能である。例えば、本発明の光電変換装置の製造方法は、シール材塗布工程及び基板接合工程以外の他の工程を含むことができる。 The present invention is not limited to the configurations of the above-described embodiments, and can be implemented by various configurations without departing from the content described in the claims. For example, the method for manufacturing a photoelectric conversion device of the present invention can include steps other than the sealing material applying step and the substrate joining step.

また、本発明の製造方法は、例えば、太陽電池の他、液晶表示装置、ＥＬ表示装置等の電子デバイスにも適用可能である。また、各光電変換素子の形状は、図１に示す矩形及び図２、３に示す三角形に限定されず、例えば、他の多角形、円形、楕円形等であってもよい。その場合、各光電変換素子の形状に対応する多角形状の閉ループ部が形成されることが好ましいが、光電変換素子が円形、楕円形のように多角形でない場合には、光電変換素子の外形に近い形状の多角形状の閉ループ部が形成される。何れの場合でも、本発明によれば、光電変換素子の外形に近接する位置に、多角形の閉ループ状のシールを形成することができ、シール材を塗布するディスペンサ制御が容易となる。 Further, the manufacturing method of the present invention can be applied to electronic devices such as liquid crystal display devices and EL display devices in addition to solar cells. Further, the shape of each photoelectric conversion element is not limited to the rectangle shown in FIG. 1 and the triangles shown in FIGS. 2 and 3, and may be another polygon, a circle, an ellipse, or the like. In that case, it is preferable that a polygonal closed loop portion corresponding to the shape of each photoelectric conversion element is formed. However, when the photoelectric conversion element is not polygonal such as circular or elliptical, the external shape of the photoelectric conversion element is A close polygonal closed loop portion is formed. In any case, according to the present invention, a polygonal closed loop seal can be formed at a position close to the outer shape of the photoelectric conversion element, and dispenser control for applying the sealing material becomes easy.

１０：第１基板
１１〜１８、２１〜２６、３１〜３５：光電変換素子
Ｐ１〜Ｐ３：シールパターン
Ｓ、Ｓ３１、Ｓ３２：始点
Ｅ、Ｅ３１、Ｅ３２：終点
Ｌ１〜Ｌ２３：直線部
Ｂ１〜Ｂ２２：屈曲部
Ｒ１〜Ｒ８：閉ループ部
Ｃ１〜Ｃ３２：角部 10: 1st board|substrate 11-18, 21-26, 31-35: Photoelectric conversion element P1-P3: Seal pattern S, S31, S32: Starting point E, E31, E32: End point L1-L23: Straight part B1-B22: Bent portion R1 to R8: Closed loop portion C1 to C32: Corner portion

Claims (6)

間隔をおいて配列された複数の光電変換素子を備える第１基板に、前記光電変換素子の周囲を取囲むようにディスペンサでシール材を塗布することでシールパターンを描画するシール材塗布工程と、
前記シール材塗布工程後の前記第１基板に、前記光電変換素子及び前記シール材を挟むように第２基板を重ね合わせ、シール材を硬化することにより、前記第１基板と前記第２基板とを接合する基板接合工程と、を含む光電変換装置の製造方法であって、
前記シール材塗布工程は、
前記シールパターンが前記光電変換素子の周囲をそれぞれ取囲む多角形の閉ループ部を形成し、
該閉ループ部の全ての角部が、前記シールパターンにおける２本の直線部が交差することにより形成されることを特徴とする光電変換装置の製造方法。 A first substrate having a plurality of photoelectric conversion elements arranged at intervals, a sealing material applying step of drawing a sealing pattern by applying a sealing material with a dispenser so as to surround the photoelectric conversion elements;
A second substrate is superposed on the first substrate after the sealing material applying step so as to sandwich the photoelectric conversion element and the sealing material, and the sealing material is cured, thereby forming the first substrate and the second substrate. A method of manufacturing a photoelectric conversion device, comprising: a substrate bonding step of bonding
The sealing material applying step,
The seal pattern forms a polygonal closed loop portion surrounding each of the photoelectric conversion elements,
A method for manufacturing a photoelectric conversion device, wherein all corners of the closed loop portion are formed by intersecting two straight line portions in the seal pattern. 隣接する前記閉ループ部における少なくとも一方側の辺を、連続する同一の直線で描画する、請求項１に記載の光電変換装置の製造方法。 The method for manufacturing a photoelectric conversion device according to claim 1, wherein at least one side of the adjacent closed loop portions is drawn with the same continuous straight line. 前記シール材塗布工程は、前記シールパターンの始点及び終点が、前記閉ループ部の外側に位置するように該シールパターンを描画する、請求項１又は２に記載の光電変換装置の製造方法。 The method for manufacturing a photoelectric conversion device according to claim 1, wherein in the sealing material applying step, the seal pattern is drawn such that a start point and an end point of the seal pattern are located outside the closed loop portion. 前記シールパターンは、直線部と屈曲部とで構成され、
前記シール材塗布工程は、前記屈曲部が、前記閉ループ部の外側に位置するように該シールパターンを描画する、請求項１〜３の何れか一項に記載の光電変換装置の製造方法。 The seal pattern is composed of a straight portion and a bent portion,
The method for manufacturing a photoelectric conversion device according to claim 1, wherein, in the sealing material applying step, the seal pattern is drawn so that the bent portion is located outside the closed loop portion. 前記第１基板には、縦方向及び横方向にそれぞれ複数の光電変換素子が配列されており、
前記シール材塗布工程の前記閉ループ部が矩形となっており、
横方向に配列される全ての前記閉ループ部における少なくとも一方側の辺を、連続する同一の直線で描画する、請求項１〜４の何れか一項に記載の光電変換装置の製造方法。 On the first substrate, a plurality of photoelectric conversion elements are arranged in the vertical direction and the horizontal direction, respectively,
The closed loop portion of the sealing material applying step is rectangular,
The method for manufacturing a photoelectric conversion device according to claim 1, wherein at least one side of all of the closed loop portions arranged in the lateral direction is drawn by the same continuous straight line. 前記第１基板には、縦方向及び横方向にそれぞれ複数の光電変換素子が配列されており、
前記シール材塗布工程の前記閉ループ部が矩形となっており、
縦方向に配列される全ての前記閉ループ部における少なくとも一方側の辺を、連続する同一の直線で描画する、請求項１〜５の何れか一項に記載の光電変換装置の製造方法。 A plurality of photoelectric conversion elements are arranged in the vertical direction and the horizontal direction on the first substrate,
The closed loop portion of the sealing material applying step is rectangular,
The method for manufacturing a photoelectric conversion device according to claim 1, wherein at least one side of all of the closed loop portions arranged in the vertical direction is drawn by the same continuous straight line.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014165064A (en) * 2013-02-26 2014-09-08 Rohm Co Ltd Dye-sensitized solar cell, manufacturing method of the same and electronic apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014165064A (en) * 2013-02-26 2014-09-08 Rohm Co Ltd Dye-sensitized solar cell, manufacturing method of the same and electronic apparatus

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