JP2013076901A - Bonding structure and manufacturing method of the same - Google Patents

Bonding structure and manufacturing method of the same Download PDF

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JP2013076901A
JP2013076901A JP2011217504A JP2011217504A JP2013076901A JP 2013076901 A JP2013076901 A JP 2013076901A JP 2011217504 A JP2011217504 A JP 2011217504A JP 2011217504 A JP2011217504 A JP 2011217504A JP 2013076901 A JP2013076901 A JP 2013076901A
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adhesive
workpiece
seal portion
seal
bonding
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JP2013076901A5 (en
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Hashio Suzuki
端生 鈴木
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Shibaura Mechatronics Corp
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Shibaura Mechatronics Corp
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Priority to JP2011217504A priority Critical patent/JP2013076901A/en
Priority to KR1020120102011A priority patent/KR20130035875A/en
Priority to CN2012103744300A priority patent/CN103033957A/en
Priority to TW101135693A priority patent/TW201314324A/en
Publication of JP2013076901A publication Critical patent/JP2013076901A/en
Publication of JP2013076901A5 publication Critical patent/JP2013076901A5/ja
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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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a bonding structure that has a high yield rate without any residual air bubble in a predetermined region between work-pieces bonded together via an adhesive agent, and further to provide a manufacturing method thereof.SOLUTION: A bonding structure includes: a work-piece S1 that partially has a flat surface; a sealing portion 3 formed of an adhesive agent around a visual field range W on the flat surface of the work-piece S1 so as to protrude from the flat surface; a portion 4 filled with the adhesive agent where a region surrounded with the sealing portion 3 is filled with the adhesive agent; and a second work-piece bonded with respect to the sealing portion 3 and the portion 4 filled with the adhesive agent. The sealing portion 3 has extending portions 31 that, as viewed from a plane side of the work-piece S1, extend parts of an inner edge of the sealing portion 3 outside the visual field range W.

Description

本発明は、たとえば、一対のワークを、接着剤を介して貼り合わせた貼合構造体及びその製造方法に関する。   The present invention relates to, for example, a bonded structure in which a pair of workpieces are bonded via an adhesive and a method for manufacturing the same.

一般的に、液晶ディスプレイは、液晶モジュール、操作用のタッチパネル、表面を保護する保護パネル（カバーパネル）等を積層することにより構成される貼合構造体となっている。これらの液晶モジュール、タッチパネル、保護パネル等の積層対象となる部材（以下、ワークと呼ぶ）は、液晶ディスプレイの筐体に組み込まれる。   Generally, a liquid crystal display is a bonding structure formed by laminating a liquid crystal module, a touch panel for operation, a protective panel (cover panel) for protecting the surface, and the like. These liquid crystal modules, touch panels, protective panels, and other members to be stacked (hereinafter referred to as workpieces) are incorporated in a liquid crystal display casing.

このようなワーク同士を貼り合わせるためには、接着シートを用いる方法と樹脂の接着剤を用いる方法がある。接着シートは、基体となるシートの両面に粘着剤が塗布され、剥離紙が貼付されたものである。この接着シートは、接着剤に比べて比較的高価である。また、接着シートの使用に当たっては、あらかじめ剥離紙を剥離する等の工程が必要となる。このため、近年のコスト削減の要求などから、比較的安価で工程の簡略化が可能な接着剤を用いた貼り合わせが主流となってきている。   In order to bond such workpieces, there are a method using an adhesive sheet and a method using a resin adhesive. The adhesive sheet is a sheet in which a pressure-sensitive adhesive is applied to both surfaces of a sheet serving as a base, and a release paper is pasted. This adhesive sheet is relatively expensive compared to an adhesive. In using the adhesive sheet, a process such as peeling the release paper in advance is required. For this reason, due to demands for cost reduction in recent years, bonding using an adhesive that is relatively inexpensive and can simplify the process has become mainstream.

また、保護パネルやタッチパネルのようなワークは、液晶の表示面の領域に重なるように積層される。この場合、各ワーク間に空気の層が入ると、外光反射により、表示面の視認性が低下する。これに対処するため、各ワークを貼り合せる際に、接着剤によって各ワークの間（ギャップ）を埋めることにより、接着層を形成することが行われている。かかる接着層は、各ワークの間のスペーサとして、ワークを保護する機能を有する。   In addition, a work such as a protective panel or a touch panel is laminated so as to overlap with a region of a liquid crystal display surface. In this case, if an air layer enters between the workpieces, the visibility of the display surface decreases due to external light reflection. In order to cope with this, an adhesive layer is formed by filling a gap (gap) between the workpieces with an adhesive when bonding the workpieces. Such an adhesive layer has a function of protecting the workpiece as a spacer between the workpieces.

さらに、近年では、画面の大型化の要請から、液晶ディスプレイも大型化している。大型の液晶ディスプレイの場合、これを構成するワークも大面積となるので、変形が生じやすい。このため、変形を吸収してワークを保護することを可能にするために、接着層に要求される厚みが増える傾向にある。たとえば、数１００μｍの厚みが要求されるようになってきている。   Furthermore, in recent years, liquid crystal displays have also become larger due to demands for larger screens. In the case of a large-sized liquid crystal display, since the workpiece | work which comprises this also becomes a large area, it is easy to produce a deformation | transformation. For this reason, the thickness required for the adhesive layer tends to increase in order to absorb the deformation and protect the workpiece. For example, a thickness of several hundred μm has been required.

このように厚みを確保しようとすると、必要な接着剤の量が増える。すると、必要量の接着剤がワークに供給された場合、接着剤が流動して、ワークからはみ出しやすくなる。そこで、接着剤として使用する樹脂（レジン）を、流動の少ない高粘度のものとすることが考えられる。しかし、かかる場合にも、接着剤の塗布位置等、プロセス条件の調整を厳密に行わないと、貼り合わせ時に、接着剤が所定の領域からはみ出してしまう場合がある。   Thus, when it is going to ensure thickness, the quantity of a required adhesive agent will increase. Then, when a necessary amount of adhesive is supplied to the workpiece, the adhesive flows and easily protrudes from the workpiece. Therefore, it is conceivable that the resin (resin) used as the adhesive has a high viscosity with little flow. However, even in such a case, unless the process conditions such as the application position of the adhesive are strictly adjusted, the adhesive may protrude from a predetermined region at the time of bonding.

これに対処するため、あらかじめ、塗布領域を規定する外周に、樹脂によって土手状のシール部を形成するシール方式がある（特許文献１参照）。たとえば、図２０に示すように、ワークＳ１に、樹脂による接着剤Ｒ１を枠状に塗布して硬化させることにより、シール部を形成する。その後、シール部の内側に樹脂による接着剤Ｒ２を供給して、図２１に示すように、ワークＳ２を貼り合わせる。このシール方式では、外周にシール部があるので、このシール部によって、貼り合わせ時の接着剤Ｒ２の流動によるはみ出しを防止できる。   In order to deal with this, there is a sealing method in which a bank-like seal portion is formed in advance on the outer periphery that defines the application region (see Patent Document 1). For example, as shown in FIG. 20, a seal portion is formed by applying a resin adhesive R <b> 1 to the work S <b> 1 in a frame shape and curing it. Thereafter, an adhesive R2 made of resin is supplied to the inside of the seal portion, and the workpiece S2 is bonded as shown in FIG. In this sealing method, since there is a seal portion on the outer periphery, the seal portion can prevent protrusion due to the flow of the adhesive R2 at the time of bonding.

なお、光学的乱反射をなくすために、ワーク間に、ワークに屈折率が近い物質（機能材料）を充填する場合もある。この場合、充填される材料は、ワークを接着する接着剤としての機能も担っている。   In addition, in order to eliminate optical irregular reflection, a substance (functional material) having a refractive index close to the workpiece may be filled between the workpieces. In this case, the material to be filled also has a function as an adhesive for bonding the workpiece.

また、貼り合わせ方法として、大気中で貼り合わせる方法と真空中で貼り合わせる方法の２種がある。大気中で貼り合わせる方法は、排気設備が不要であり、安価に実現できる。ただし、大気中での貼り合わせは、貼り合わせ面に気泡が残らないようにするためのプロセス条件出しが難しい。このプロセス条件としては、たとえば、樹脂を広げて貼り合わせる際の樹脂の塗布パターン、貼り合わせ圧力、圧力のかけ方等がある。一方、真空中で貼り合わせる方法では、十分に排気を行った環境であれば、周囲に気体がないことから、比較的容易に気泡の少ない貼り合わせを行うことができる。   There are two types of bonding methods: a method of bonding in air and a method of bonding in vacuum. The method of bonding in the air does not require an exhaust facility and can be realized at low cost. However, in the bonding in the air, it is difficult to obtain process conditions for preventing bubbles from remaining on the bonding surface. The process conditions include, for example, a resin coating pattern when the resin is spread and bonded, a bonding pressure, a method of applying pressure, and the like. On the other hand, in the method of bonding in vacuum, since there is no gas in the surroundings in a sufficiently exhausted environment, bonding with few bubbles can be performed relatively easily.

特開２０１０−６６７１１号公報JP 2010-66711 A 特開２００８−２０９５１０号公報JP 2008-209510 A 特開２００９−８８５１号公報JP 2009-8851 A

ところで、真空中での貼り合わせを行おうとしても、実際の生産現場では、タクトタイム等の要請から、排気に十分な時間をかけることが難しい。したがって、ある程度の気体が残った状態で貼り合わせを行わざるを得ず、気泡の残留が生じる可能性がある。このような残留気泡Ａの一例を、図２２に示す。残留気泡Ａの発生位置は、一般的には、シール部の内縁、隅等であることが多い。これは、貼り合わせ時に、接着剤が辿る経路によるものである。つまり、貼り合わせ時に接着剤が広がると、気泡は、接着剤の外縁に押されてシール部の内縁に到達する。よって、この内縁に残留する気泡が存在する。さらに、接着剤はシール部の内縁に沿って、隅へと移動するので、多くの気泡が隅へと集まる。   By the way, even if bonding is performed in a vacuum, at an actual production site, it is difficult to spend a sufficient amount of time for exhaustion due to demands such as tact time. Therefore, bonding must be performed in a state where a certain amount of gas remains, and bubbles may remain. An example of such residual bubbles A is shown in FIG. In general, the position where the residual bubbles A are generated is often the inner edge or corner of the seal portion. This is due to the path followed by the adhesive during bonding. That is, when the adhesive spreads during bonding, the bubbles are pushed by the outer edge of the adhesive and reach the inner edge of the seal portion. Therefore, there are bubbles remaining at the inner edge. Further, since the adhesive moves to the corner along the inner edge of the seal portion, many bubbles gather at the corner.

この残留気泡Ａが、液晶ディスプレイ等におけるユーザの視野範囲Ｗ内に発生した場合、画面の視認性が阻害される可能性がある。このため、図２２に示した残留気泡Ａは、図２１に示したユーザの視野範囲Ｗの外にあることが好ましい。また、残留気泡Ａは、たとえば、液晶ディスプレイの表示領域の外枠を構成する外周ベゼルの内側に収まっていれば、特に問題は生じない。   When this residual bubble A is generated in the visual field range W of the user in a liquid crystal display or the like, the visibility of the screen may be hindered. For this reason, it is preferable that the residual bubbles A shown in FIG. 22 are outside the visual field range W of the user shown in FIG. Further, if the residual bubbles A are within the outer peripheral bezel that forms the outer frame of the display area of the liquid crystal display, for example, no particular problem occurs.

しかし、視野範囲Ｗについては、画面の大型化の要請から、広い面積を確保することが望まれている。このため、表示装置の表示領域は、できるだけ広く活用する必要がある。つまり、気泡の残留により表示領域が活用されない部分、残留した気泡を外枠で隠すような部分は、できるだけ少なくすることが望ましい。   However, with regard to the visual field range W, it is desired to secure a wide area because of the demand for a larger screen. For this reason, it is necessary to utilize the display area of the display device as widely as possible. That is, it is desirable to reduce as much as possible the portion where the display area is not utilized due to the remaining bubbles and the portion where the remaining bubbles are hidden by the outer frame.

気泡の残留を防止するため、あらかじめシール部に隙間を設けておき、貼り合わせ時に、隙間から樹脂が流出するようにして、気泡を排出する方法も提案されている（特許文献２、３）。しかし、かかる方法では、流出した樹脂がワークからこぼれ落ちて、周囲を汚すことになる。これは、特に、液晶パネルの周囲に駆動回路用の基板が設けられた液晶モジュールの貼り合わせの際に問題となる。   In order to prevent the bubbles from remaining, a method has been proposed in which a gap is provided in the seal portion in advance, and the resin flows out from the gap at the time of bonding (Patent Documents 2 and 3). However, according to such a method, the resin that has flowed out spills from the work and stains the surroundings. This becomes a problem particularly when a liquid crystal module having a drive circuit substrate provided around the liquid crystal panel is bonded.

本発明は、上記のような従来技術の問題点を解決するために提案されたものであり、その目的は、接着剤を介して貼り合わされたワーク間において、所定の領域に気泡の残留がなく、良品率の高い貼合構造体及び貼合構造体の製造方法を提供することにある。   The present invention has been proposed in order to solve the above-described problems of the prior art, and the object thereof is to prevent bubbles from remaining in a predetermined area between workpieces bonded via an adhesive. It is in providing the manufacturing method of a bonding structure and a bonding structure with a high non-defective rate.

上記の目的を達成するため、本発明の貼合構造体は、以下のような技術的特徴を有している。
(1)少なくとも一部に平坦面を有する第１のワーク
(2)前記第１のワークの平坦面における所定の領域の周囲に、前記平坦面から***するように、接着剤により形成されたシール部
(3)前記シール部によって囲まれた領域に、接着剤が充填された接着剤充填部
(4)前記接着剤充填部及び前記シール部に対して貼り合わされた第２のワーク
(5)前記第１のワークの平面側から見て、前記シール部の内縁の一部が、前記所定の領域の外方へ拡大した拡張部 In order to achieve the above object, the bonded structure of the present invention has the following technical features.
(1) A first workpiece having a flat surface at least partially.
(2) A seal portion formed by an adhesive so as to protrude from the flat surface around a predetermined region on the flat surface of the first workpiece.
(3) Adhesive filling portion in which the region surrounded by the seal portion is filled with an adhesive
(4) The second workpiece bonded to the adhesive filling portion and the seal portion
(5) An extended portion in which a part of the inner edge of the seal portion is expanded outward from the predetermined region when viewed from the plane side of the first workpiece.

なお、他の態様では、前記シール部は、前記第１のワークの平面側から見て、矩形状に形成され、前記拡張部は、少なくとも前記シール部の隅に形成されている。他の態様では、前記シール部は、前記第１のワークの平面側から見て、矩形状に形成され、前記拡張部は、少なくとも前記シール部の辺に形成されている。他の態様では、前記拡張部は、前記シール部の幅が狭い箇所により形成されている。   In another aspect, the seal portion is formed in a rectangular shape when viewed from the plane side of the first workpiece, and the extension portion is formed at least at a corner of the seal portion. In another aspect, the seal part is formed in a rectangular shape when viewed from the plane side of the first workpiece, and the extension part is formed at least on the side of the seal part. In another aspect, the extension portion is formed by a portion where the width of the seal portion is narrow.

他の態様では、前記拡張部は、前記シール部の一部を除去することにより形成されていることを特徴とする。他の態様では、前記拡張部内の領域は、前記第１のワークの平面側から見て、幅の狭い狭幅部と、幅の広い広幅部とを有し、前記狭幅部の一端は、前記所定の領域に連通し、前記狭幅部の他端は、前記広幅部に連通していることを特徴とする。また、上記のような貼合構造体の製造方法も、他の態様の一つである。   In another aspect, the extension portion is formed by removing a part of the seal portion. In another aspect, the region in the extended portion has a narrow width portion and a wide width portion as viewed from the plane side of the first workpiece, and one end of the narrow width portion is The other end of the narrow portion communicates with the predetermined region, and the other end of the narrow portion communicates with the wide portion. Moreover, the manufacturing method of the above bonded structures is also one of the other aspects.

以上のような発明では、第１のワークに対して第２のワークを貼り合わせる際に、シール部内の接着剤に加わる圧力によって、接着剤がシール部内に広がる。このとき、シール部の拡張部に達した接着剤によって、気泡が所定の領域の外に排出される。また、接着剤が拡張部に流入しても、拡張部の内部にとどまるため、第１のワークの外へ流出することが防止される。   In the invention as described above, when the second workpiece is bonded to the first workpiece, the adhesive spreads in the seal portion due to the pressure applied to the adhesive in the seal portion. At this time, bubbles are discharged out of the predetermined region by the adhesive reaching the expansion portion of the seal portion. Further, even if the adhesive flows into the expansion part, it remains inside the expansion part, so that it is prevented from flowing out of the first workpiece.

本発明によれば、接着剤を介して貼り合わされたワーク間において、所定の領域に気泡の残留がなく、良品率の高い貼合構造体及び貼合構造体の製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, between the workpiece | work bonded through the adhesive agent, there is no residue of a bubble in a predetermined | prescribed area | region, and the manufacturing method of the bonding structure and bonding structure with a high yield rate can be provided. .

本発明の一実施形態における貼合構造体を示す垂直断面図The vertical sectional view showing the pasting structure in one embodiment of the present invention. 図１の貼合構造体を示す水平断面図Horizontal sectional view showing the bonding structure of FIG. 図１の貼合構造体の貼り合わせの直前を示す垂直断面図Vertical sectional view showing immediately before bonding of the bonding structure of FIG. 図１の貼合構造体の貼り合わせ時の接着剤の拡大を示す水平断面図Horizontal sectional view which shows expansion of the adhesive agent at the time of bonding of the bonding structure of FIG. 図１の貼合構造体の接着剤が拡張部内に流入した状態を示す水平断面図1 is a horizontal sectional view showing a state in which the adhesive of the bonding structure in FIG. 1 has flowed into the extended portion. 矩形の拡張部を多数形成した態様を示す水平断面図Horizontal sectional view showing an aspect in which a large number of rectangular extensions are formed 三角波形の拡張部を多数形成した態様を示す水平断面図Horizontal sectional view showing an aspect in which a large number of triangular wave expansion portions are formed 曲線波形の拡張部を多数形成した態様を示す水平断面図Horizontal sectional view showing an aspect in which a large number of curved waveform expanded portions are formed 曲線状に拡張部を形成した態様を示す水平断面図Horizontal sectional view showing an aspect in which the extended portion is formed in a curved shape 狭幅部と広幅部を有する拡張部の一例を示す水平断面図Horizontal sectional view showing an example of an extended part having a narrow part and a wide part 樹脂の塗布量の調整により拡張部を形成した態様を示す水平断面図Horizontal sectional view showing an aspect in which an extended portion is formed by adjusting the amount of resin applied 樹脂の重ね塗りにより拡張部を形成した態様を示す水平断面図Horizontal sectional view showing an aspect in which an extended portion is formed by overcoating with resin 図１２の他の態様を示す水平断面図Horizontal sectional view showing another embodiment of FIG. シール部の一部を除去することにより拡張部を形成した態様を示す水平断面図Horizontal sectional view showing an aspect in which an extended portion is formed by removing a part of the seal portion 図１４の拡張部の形成方法を示す縦断面図FIG. 14 is a longitudinal sectional view showing a method for forming the extended portion in FIG. 図１５の方法に使用するノズルを示す斜視図The perspective view which shows the nozzle used for the method of FIG. 狭幅部と広幅部を有する拡張部の一例を示す水平断面図Horizontal sectional view showing an example of an extended part having a narrow part and a wide part 複数の線状に塗布した接着剤と拡張部の位置関係を示す平面図The top view which shows the positional relationship of the adhesive agent applied to several linear form, and an expansion part シール部の形状の一例を示す平面図Plan view showing an example of the shape of the seal part 従来の貼合構造体の貼り合わせの直前を示す垂直断面図Vertical sectional view showing immediately before pasting of conventional pasting structure 従来の貼合構造体の一例を示す垂直断面図Vertical sectional view showing an example of a conventional bonding structure 従来の貼合構造体の残留気泡を示す水平断面図Horizontal sectional view showing residual bubbles in conventional pasting structure

本発明の実施の形態（以下、実施形態と呼ぶ）について、図面を参照して具体的に説明する。なお、各図におけるシール部、接着剤、気泡等は、模式的に図示したものであり、現実の潰れ具合、流動態様等とは必ずしも一致しない。   Embodiments of the present invention (hereinafter referred to as embodiments) will be specifically described with reference to the drawings. In addition, the seal part, adhesive agent, bubble, etc. in each figure are shown schematically, and do not necessarily correspond to the actual collapse state, flow mode, and the like.

［構成］
本実施形態は、図１に示すように、一対のワークＳ１、Ｓ２を、接着層Ｂを介して貼り合わせた貼合構造体Ｍである。貼り合わせ対象となるワークＳ１、Ｓ２は、平坦面を有する矩形の平板である。ワークＳ１、Ｓ２としては、たとえば、表示装置を構成する基板、モジュール等とすることが考えられる。 [Constitution]
This embodiment is the bonding structure M which bonded together a pair of workpiece | work S1, S2 via the contact bonding layer B, as shown in FIG. The workpieces S1 and S2 to be bonded are rectangular flat plates having flat surfaces. As the workpieces S1 and S2, for example, a substrate, a module, or the like constituting the display device can be considered.

接着層Ｂは、図２に示すように、シール部３と接着剤充填部４を有している。シール部３は、ワークＳ１の平坦面における所定の領域の周囲に、ワークＳ１の表面から***するように、樹脂の接着剤により形成されている。この所定の領域は、たとえば、表示装置の場合に視野範囲Ｗとなる矩形の領域である。接着剤充填部４は、シール部３によって囲まれた領域に、樹脂による接着剤Ｒを充填した部分である。   As shown in FIG. 2, the adhesive layer B has a seal portion 3 and an adhesive filling portion 4. The seal portion 3 is formed of a resin adhesive so as to protrude from the surface of the workpiece S1 around a predetermined region on the flat surface of the workpiece S1. This predetermined area is, for example, a rectangular area that becomes the visual field range W in the case of a display device. The adhesive filling portion 4 is a portion in which the region surrounded by the seal portion 3 is filled with an adhesive R made of resin.

シール部３には、拡張部３１が形成されている。拡張部３１は、ワークＳ１の平面側から見て、シール部３の内縁の一部を、所定の領域の外方へ拡大させた部分である。たとえば、図２では、矩形の拡張部３１が、シール部３の４つの角（隅）に設けられている。   An expansion portion 31 is formed in the seal portion 3. The extension part 31 is a part obtained by enlarging a part of the inner edge of the seal part 3 to the outside of a predetermined area when viewed from the plane side of the workpiece S1. For example, in FIG. 2, rectangular extension portions 31 are provided at four corners of the seal portion 3.

［作用］
以上のような本実施形態の製造方法を説明する。まず、ワークＳ１に対して、上記のようなシール部３を形成する。たとえば、印刷装置を用いたスクリーン印刷により、上記のような拡張部３１を有するシール部３が形成されるように、樹脂による接着剤を印刷することにより行う。接着剤としては、たとえば、紫外線硬化樹脂を用いる。 [Action]
The manufacturing method of the present embodiment as described above will be described. First, the seal portion 3 as described above is formed on the workpiece S1. For example, it is performed by printing an adhesive made of resin so that the seal portion 3 having the extended portion 31 as described above is formed by screen printing using a printing apparatus. For example, an ultraviolet curable resin is used as the adhesive.

そして、印刷されたシール部３に、紫外線照射装置によって、大気中で紫外線を照射する。大気中の酸素により硬化の進行が阻害されるため、シール部３は仮硬化するにとどまる。これにより、シール部３の流動が防止される。   The printed seal portion 3 is irradiated with ultraviolet rays in the atmosphere by an ultraviolet irradiation device. Since the progress of curing is inhibited by oxygen in the atmosphere, the seal portion 3 is only temporarily cured. Thereby, the flow of the seal part 3 is prevented.

次に、図３に示すように、ワークＳ１のシール部３の内側の領域に、接着剤Ｒを供給する。たとえば、接着剤供給装置が備えるディスペンサのノズルから、接着剤Ｒである紫外線硬化樹脂を滴下する。   Next, as shown in FIG. 3, an adhesive R is supplied to a region inside the seal portion 3 of the workpiece S1. For example, the ultraviolet curable resin which is the adhesive agent R is dripped from the nozzle of the dispenser with which an adhesive agent supply apparatus is provided.

その後、ワークＳ１に対して、ワークＳ２を貼り合わせる。たとえば、貼合装置において、テーブル上のワークＳ１に対して、ワークＳ２を載置して、ワークＳ２上に加圧ローラを押圧しながら移動させる。これにより、ワークＳ１に対してワークＳ２を押し付ける。   Thereafter, the workpiece S2 is bonded to the workpiece S1. For example, in the bonding apparatus, the workpiece S2 is placed on the workpiece S1 on the table and moved while pressing the pressure roller on the workpiece S2. Thereby, the workpiece S2 is pressed against the workpiece S1.

このとき、図４に示すように、ワークＳ２によってシール部３が押圧されて潰れるとともに、接着剤Ｒも押圧されるので、シール部３内に接着剤Ｒが広がっていく。そして、接着剤Ｒがシール部３の内周に達すると、さらに内周に沿って流動し、拡張部３１に達する。   At this time, as shown in FIG. 4, the seal portion 3 is pressed and crushed by the work S <b> 2 and the adhesive R is also pressed, so that the adhesive R spreads in the seal portion 3. When the adhesive R reaches the inner periphery of the seal portion 3, it further flows along the inner periphery and reaches the expansion portion 31.

拡張部３１に向かって流れた接着剤Ｒは、図５に示すように、拡張部３１の入口若しくは内部で停止する。この場合、気泡Ａはシール部３の内縁に沿って集まり、拡張部３１の内部へ入る。このように、シール部３内に接着剤Ｒが充填されるとともに、気泡Ａは拡張部３１へ押し出されるので、視野範囲Ｗ内には残留しない。なお、同じワークＳ１であっても、複数の拡張部３１において、いずれの拡張部３１に接着剤Ｒが入るか、その入口で停止するか等の態様は、同じ場合もあれば、異なる場合もある。   As shown in FIG. 5, the adhesive R that has flowed toward the expanded portion 31 stops at the entrance or inside of the expanded portion 31. In this case, the bubbles A gather along the inner edge of the seal portion 3 and enter the expanded portion 31. Thus, since the adhesive R is filled in the seal portion 3 and the bubbles A are pushed out to the expansion portion 31, they do not remain in the visual field range W. In addition, even if it is the same workpiece | work S1, the aspect of whether the adhesive agent R enters into the some extended part 31, or stops at the inlet_port | entrance in the some extended part 31 may be the same, and may differ. is there.

このように、ワークＳ１及びワークＳ２の間のシール部３内に、接着剤Ｒが充填された接着剤充填部４が形成される。そして、シール部３及び接着剤充填部４に対して、硬化処理が行われる。たとえば、真空引きした真空チャンバ内において、紫外線照射装置によって、紫外線を照射する。これにより、シール部３及び接着剤充填部４が本硬化した接着層Ｂを有する貼合構造体Ｍが完成する。なお、完成した貼合構造体Ｍにおいて、各拡張部３１における接着剤Ｒの態様は、同様であっても、上記のように異なるものを含んでいてもよい。また、本硬化において、真空中で紫外線を照射することは必須ではなく、大気中で照射してもよい。貼り合わせ後は、接着剤が大気に接している部分が少ないため、大気中での照射でも硬化は進行するためである。   As described above, the adhesive filling portion 4 filled with the adhesive R is formed in the seal portion 3 between the workpiece S1 and the workpiece S2. Then, a curing process is performed on the seal portion 3 and the adhesive filling portion 4. For example, ultraviolet rays are irradiated by an ultraviolet irradiation device in a vacuum chamber that has been evacuated. Thereby, the bonding structure M which has the contact bonding layer B which the seal | sticker part 3 and the adhesive agent filling part 4 hardened | cured is completed. In addition, in the completed bonding structure M, the aspect of the adhesive agent R in each expansion part 31 may be the same, or may include different things as described above. In the main curing, it is not essential to irradiate ultraviolet rays in a vacuum, and irradiation may be performed in the air. This is because after bonding, there are few portions where the adhesive is in contact with the air, and thus the curing proceeds even in the air.

［効果］
以上のような本実施形態によれば、ワークＳ１外への接着剤Ｒの溢れを防止できるとともに、視野範囲Ｗの外へ気泡Ａを排出することができる。このため、視野範囲Ｗ内に気泡の残留がない貼合構造体Ｍを製造でき、良品率が向上する。 [effect]
According to the present embodiment as described above, the overflow of the adhesive R to the outside of the workpiece S1 can be prevented, and the bubbles A can be discharged out of the visual field range W. For this reason, the bonding structure M which does not have a bubble remaining in the visual field range W can be manufactured, and a yield rate improves.

また、拡張部３１を形成することにより、あらかじめ接着剤Ｒ及び気泡Ａの排出箇所が確保される。このため、接着剤Ｒの劣化による粘度変化、溶存ガス量の変化等、プロセス条件が変化しても、これらの変化に起因する流動量の変動、気泡Ａの増大等を吸収することができる。   Further, by forming the extended portion 31, the discharge locations for the adhesive R and the bubbles A are secured in advance. For this reason, even if process conditions change, such as a change in viscosity due to deterioration of the adhesive R, a change in the amount of dissolved gas, etc., fluctuations in the flow amount due to these changes, an increase in bubbles A, and the like can be absorbed.

さらに、シール部３は、印刷により一括で形成できるので、効率的な製造が可能となる。たとえば、シール部３の形成のための時間が大幅に短縮され、この時間に他の工程が拘束されなくなる。   Furthermore, since the seal portion 3 can be formed at a time by printing, efficient manufacture is possible. For example, the time for forming the seal portion 3 is greatly shortened, and other processes are not restricted by this time.

［他の実施形態］
本発明は、上記のような実施形態に限定されるものではない。たとえば、以下のような形態も、本発明に含まれる。 [Other Embodiments]
The present invention is not limited to the embodiment as described above. For example, the following forms are also included in the present invention.

（１）拡張部の位置、形状、数等は、上記の実施形態で例示したものには限定されない。たとえば、図６に示すように、シール部３に、多数の矩形の拡張部３１を形成してもよい。図７に示すように、シール部３に、三角波形による多数の拡張部３１を形成してもよい。図８に示すように、曲線波形による多数の拡張部３１を形成してもよい。 (1) The position, shape, number, and the like of the extension portion are not limited to those exemplified in the above embodiment. For example, as shown in FIG. 6, a large number of rectangular extended portions 31 may be formed in the seal portion 3. As shown in FIG. 7, a large number of extended portions 31 having a triangular waveform may be formed in the seal portion 3. As shown in FIG. 8, you may form many extended parts 31 by a curved waveform.

このように多数の拡張部３１を設けると、複数の気泡Ａが集まり難くなり、個々の拡張部３１に入った気泡Ａの大きさは、小さくなる。このため、気泡Ａが接着剤に溶け込み消失し易くなる。したがって、タクトタイムの短縮が可能となる。気泡Ａの消失は、貼り合わせ後に放置時間を確保することによっても促進される。   When a large number of expansion portions 31 are provided in this way, it is difficult for a plurality of bubbles A to gather, and the size of the bubbles A that enter the individual expansion portions 31 is reduced. For this reason, the bubble A is easily dissolved in the adhesive and disappears. Therefore, the tact time can be shortened. The disappearance of the bubbles A is also promoted by securing a standing time after bonding.

複数の拡張部３１を設ける場合に、気泡が集まり易い形状で、集まり易い箇所に設けることも可能である。たとえば、図９に示すように、シール部３の四隅と辺の中間に、曲線状の拡張部３１を形成してもよい。これにより、気泡の取り残しを少なくすることができる。   In the case where a plurality of expansion portions 31 are provided, it is also possible to provide them in a shape where bubbles are likely to gather, and to be easily gathered. For example, as shown in FIG. 9, curved extended portions 31 may be formed between the four corners and sides of the seal portion 3. Thereby, the remaining of bubbles can be reduced.

また、図１０（ａ）（ｂ）に示すように、拡張部３１内の領域が、視野範囲Ｗの側が幅の狭い狭幅部３１ａ、視野範囲Ｗと反対側が幅の広い広幅部３１ｂとなるように形成することも可能である。つまり、狭幅部３１ａの一端は、視野範囲Ｗに対応する領域に連通し、狭幅部３１ａの他端は、広幅部３１ｂに連通している。この場合、狭幅部３１ａによって、接着剤Ｒが各拡張部３１に多量に流入することを抑制しつつ、気泡Ａは拡張部３１に排出されるようにすることができる。これにより、接着剤Ｒの供給量を節約できる。また、各拡張部３１への流入量のバラツキも少なくなるので、貼り合わせの厚さのバラツキも少なくすることができる。なお、接着剤Ｒの量が過大の場合には、接着剤Ｒが狭幅部３１ａから広幅部３１ｂに流入して、溢れを防止できる。   Further, as shown in FIGS. 10A and 10B, the region in the extended portion 31 is a narrow portion 31a having a narrow width on the side of the visual field range W, and a wide portion 31b having a wide width on the opposite side to the visual field range W. It is also possible to form it. That is, one end of the narrow portion 31a communicates with a region corresponding to the visual field range W, and the other end of the narrow portion 31a communicates with the wide portion 31b. In this case, the bubbles A can be discharged to the expansion portions 31 while suppressing a large amount of the adhesive R from flowing into the expansion portions 31 by the narrow width portions 31a. Thereby, the supply amount of the adhesive R can be saved. Moreover, since the variation of the inflow amount to each expansion part 31 decreases, the variation in the thickness of bonding can also be reduced. When the amount of the adhesive R is excessive, the adhesive R flows from the narrow width portion 31a to the wide width portion 31b, thereby preventing overflow.

（２）シール部の形成方法は、スクリーン印刷には限定されない。たとえば、版による転写、レーザ転写などにより、シール部を形成することも可能である。転写による場合にも、ワークの全体に一括でシール部を形成することが可能である。 (2) The method for forming the seal portion is not limited to screen printing. For example, the seal portion can be formed by transfer using a plate, laser transfer, or the like. Even in the case of transfer, it is possible to form a seal portion all over the workpiece.

また、樹脂材料を供給するディスペンサ、インクジェットヘッドを用いて、樹脂を塗布することにより、シール部を形成してもよい。これにより、様々なシール部の形成パターンを、適宜選択して適用することができる。樹脂としては、光学特性や材料のコンタミネーション等の観点から、シール部や接着剤充填部と同種の粘度違いとすることが望ましいが、これには限定されない。   Alternatively, the seal portion may be formed by applying resin using a dispenser that supplies a resin material or an inkjet head. Thereby, various formation patterns of the seal portion can be appropriately selected and applied. The resin preferably has the same viscosity difference as that of the seal part and the adhesive filling part from the viewpoint of optical characteristics and material contamination, but is not limited thereto.

シール部を複数回重ねて形成（印刷、転写、塗布等）することにより、高さを確保してもよい。この場合、形成する毎に毎回若しくは所定の回数毎に、硬化処理を行うことにより、レベリングを抑制できる。   The height may be secured by forming the seal part by overlapping a plurality of times (printing, transferring, applying, etc.). In this case, leveling can be suppressed by performing the curing process every time it is formed or every predetermined number of times.

（３）拡張部の形成方法も、種々のものが適用可能である。たとえば、図１１に示すように、シール部３を形成する際に、ディスペンサによる樹脂の吐出量を部分的に調整し、幅の広狭が生じるようにする。これにより、シール部３の幅の狭い箇所を拡張部３１とすることができる。 (3) Various methods can be applied to the extension portion. For example, as shown in FIG. 11, when the seal portion 3 is formed, the amount of resin discharged by the dispenser is partially adjusted so that the width is increased or decreased. Thereby, the narrow part of the seal | sticker part 3 can be made into the expansion part 31. FIG.

また、図１２に示すように、樹脂の塗布により、幅の狭いシール部３を形成した後、この上に、幅広に樹脂を断続的に塗布することにより、幅の狭い箇所を、拡張部３１とすることができる。これは、図１３に示すように、幅広の部分が内側にのみ突出するようにして、外側の所要スペースを節約してもよい。なお、図１１〜図１３の形状のシール部３を、印刷や転写により形成することも可能である。印刷や転写の場合、一括で形成することも、二重に重ねて印刷や転写をすることにより形成することも可能である。   Further, as shown in FIG. 12, after the narrow seal portion 3 is formed by application of resin, a wide portion of the resin is intermittently applied on the narrow seal portion 3 so that the narrow portion is extended to the extended portion 31. It can be. As shown in FIG. 13, this may save the required space on the outside by allowing the wide portion to protrude only inward. In addition, it is also possible to form the sealing part 3 of the shape of FIGS. 11-13 by printing or transfer. In the case of printing or transferring, it can be formed in a lump, or can be formed by double printing and transferring.

さらにシール部を形成後に、その一部を除去することにより、拡張部を形成してもよい。たとえば、図１４に示すように、シール部３の内縁の一部を除去することにより、拡張部３１を形成することができる。除去方法の一つとしては、図１５、図１６に示すように、真空源に接続されたノズルＮをシール部３の内縁に差し込んで、除去部分を吸引することが考えられる。このノズルＮは、シール部３に差し込む先端部に切欠部ｈが形成されているので、吸引時に切欠部ｈから空気が流入して吸引し易くなる。なお、シール部３の一部の除去により拡張部３１を形成する場合にも、図１７（ａ）（ｂ）に示すように、狭幅部３１ａと広幅部３１ｂを有するように形成することにも適用可能である。   Further, after forming the seal portion, the extended portion may be formed by removing a part of the seal portion. For example, as shown in FIG. 14, the extended portion 31 can be formed by removing a part of the inner edge of the seal portion 3. As one of the removal methods, as shown in FIGS. 15 and 16, it is conceivable to insert the nozzle N connected to the vacuum source into the inner edge of the seal portion 3 and suck the removed portion. Since the nozzle N has a notch h formed at the tip end inserted into the seal portion 3, air can easily flow in from the notch h during suction. In addition, when forming the extended part 31 by removing a part of the seal part 3, as shown in FIGS. 17A and 17B, the extended part 31 is formed so as to have a narrow part 31a and a wide part 31b. Is also applicable.

なお、除去具、除去装置としては、その他の態様も考えられる。スポイト、ヘラ、ピン、ナイフ、針等若しくはこれらの組み合わせにより、シール部の一部を除去することも可能である。除去具等のワークＳ１に接する部材は、その材質がワークＳ１に傷をつけないものとすることが望ましい。たとえば、樹脂製若しくは樹脂によるコーテイングを施されたものとすることが考えられる。樹脂の一例としては、たとえば、ＰＴＦＥ等が考えられる。   In addition, as a removal tool and a removal apparatus, another aspect is also considered. It is also possible to remove a part of the seal portion by using a dropper, a spatula, a pin, a knife, a needle or the like or a combination thereof. It is desirable that the member that comes into contact with the workpiece S1 such as a removing tool is made of a material that does not damage the workpiece S1. For example, it is conceivable to be made of resin or coated with resin. As an example of the resin, for example, PTFE can be considered.

（４）シール部内への接着剤の供給方法についても、特定のものには限定されない。たとえば、図１８に示すように、多連のディスペンサを用いて、接着剤Ｒを複数の線状に塗布することも可能である。この場合、接着剤Ｒの塗布線の幅や間隔を調整することにより、気泡が生じやすい位置と、拡張部３１とを対応させることも可能である。たとえば、接着剤Ｒの塗布線の間における気泡の発生し易い場所に、拡張部３１が対応するように、接着剤Ｒを塗布することが考えられる。これにより、気泡が拡張部３１に入るまでの移動距離が短くなり、タクトタイムの短縮が可能となる。また、各拡張部３１に集まる気泡は小さくなるので、消失し易い。 (4) The method for supplying the adhesive into the seal portion is not limited to a specific one. For example, as shown in FIG. 18, it is also possible to apply the adhesive R in a plurality of lines using a multiple dispenser. In this case, by adjusting the width and interval of the application line of the adhesive R, it is possible to make the position where the bubbles easily occur correspond to the extended portion 31. For example, it is conceivable that the adhesive R is applied so that the expanded portion 31 corresponds to a place where bubbles are easily generated between the application lines of the adhesive R. Thereby, the movement distance until a bubble enters into the expansion part 31 becomes short, and the tact time can be shortened. In addition, since the air bubbles gathering in each expansion part 31 are small, they are likely to disappear.

その他、接着剤をローラによって塗布する方法、スキージによって塗布する方法、スピン塗布する方法等、種々の方法が適用可能である。なお、接着剤としては、シール部と同様若しくは異なる接着剤が適用可能である。   In addition, various methods such as a method of applying an adhesive with a roller, a method of applying with an squeegee, and a method of spin coating can be applied. As the adhesive, an adhesive similar to or different from that of the seal portion can be applied.

（５）シール部、接着剤充填部に使用する接着剤の種類は、紫外線硬化樹脂には限定されない。他の電磁波により硬化する樹脂や熱硬化型樹脂等、あらゆる種類の樹脂が適用できる。この場合、樹脂の種類に応じて、硬化処理の方法は、電磁波の照射、温度変更（加熱、冷却）、送風等、種々のものを適用することが考えられる。したがって、シール部を仮硬化させる際の処理も、樹脂に応じて異なる。なお、シール部の仮硬化については、必ずしも行わなくてもよい。 (5) The type of adhesive used for the seal part and the adhesive filling part is not limited to the ultraviolet curable resin. Any type of resin such as a resin curable by other electromagnetic waves or a thermosetting resin can be applied. In this case, depending on the type of resin, it is conceivable to apply various curing methods such as electromagnetic wave irradiation, temperature change (heating, cooling), and air blowing. Accordingly, the treatment for pre-curing the seal portion also differs depending on the resin. Note that the temporary curing of the seal portion is not necessarily performed.

（６）シール部が形成する線は、その形状を問わない。方形、円形、楕円形、その他の多角形、曲線円形であってもよい。たとえば、図１９に示すように、ワークＳ１に、接着剤を塗布すべきでない領域Ｚが存在する場合に、これを回避するように、シール部３を形成することも可能である。 (6) The shape of the line formed by the seal portion does not matter. It may be a square, a circle, an ellipse, another polygon, or a curved circle. For example, as shown in FIG. 19, when there is a region Z where the adhesive should not be applied, the seal portion 3 can be formed so as to avoid this.

また、シール部を形成する箇所は、接着剤の供給領域の外周を規定する線には限らない。たとえば、円形やドーナツ形状のディスクの周円上のように、供給領域の周線を規定する線であってもよい。内側に非充填領域がある場合の内周線も含まれる。   Moreover, the place which forms a seal | sticker part is not restricted to the line which prescribes | regulates the outer periphery of the supply area | region of an adhesive agent. For example, it may be a line that defines the circumferential line of the supply area, such as on a circumferential circle of a circular or donut shaped disk. The inner peripheral line when there is an unfilled region inside is also included.

（７）ワークの貼り合わせ、樹脂の硬化処理については、真空中で行っても、大気中で行ってもよい。 (7) The bonding of the workpiece and the resin curing process may be performed in a vacuum or in the air.

（８）貼り合せ対象となるワークは、カバーパネルやタッチパネルと液晶モジュール若しくは液晶モジュールを構成する表示パネルとバックライト等が、典型例である。しかし、本発明の適用対象となる一対のワークは、貼合面の少なくとも一部に平坦面を有し、一対の貼着対象となり得るものであれば、その大きさ、形状、材質等は問わない。たとえば、表示装置を構成する各種の部材、半導体ウェーハ、光ディスク等にも適用可能である。ワークの一方に接着剤を供給する場合のみならず、双方に供給する場合にも適用可能である。 (8) Workpieces to be bonded are typically a cover panel, a touch panel and a liquid crystal module or a display panel and a backlight constituting the liquid crystal module. However, the size, shape, material, etc. of the pair of workpieces to which the present invention is applied are not particularly limited as long as they have a flat surface on at least a part of the bonding surface and can be a pair of bonding targets. Absent. For example, the present invention can be applied to various members constituting a display device, a semiconductor wafer, an optical disc, and the like. The present invention is applicable not only when supplying an adhesive to one of the workpieces but also when supplying the adhesive to both.

３…シール部
４…接着剤充填部
３１…拡張部
３１ａ…狭幅部
３１ｂ…広幅部
Ａ…気泡
Ｍ…貼合構造体
Ｒ…充填剤
Ｓ１、Ｓ２…ワーク
Ｗ…視野範囲 DESCRIPTION OF SYMBOLS 3 ... Seal part 4 ... Adhesive filling part 31 ... Expansion part 31a ... Narrow part 31b ... Wide part A ... Bubble M ... Bonding structure R ... Fillers S1, S2 ... Workpiece W ... View range

Claims (10)

少なくとも一部に平坦面を有する第１のワークと、
前記第１のワークの平坦面における所定の領域の周囲に、前記平坦面から***するように、接着剤により形成されたシール部と、
前記シール部によって囲まれた領域に、接着剤が充填された接着剤充填部と、
前記接着剤充填部及び前記シール部に対して貼り合わされた第２のワークと、
前記第１のワークの平面側から見て、前記シール部の内縁の一部が、前記所定の領域の外方へ拡大した拡張部と、
を有することを特徴とする貼合構造体。 A first workpiece having a flat surface at least in part;
A seal portion formed of an adhesive so as to protrude from the flat surface around a predetermined region of the flat surface of the first workpiece;
An adhesive filling portion filled with an adhesive in a region surrounded by the seal portion;
A second workpiece bonded to the adhesive filling portion and the seal portion;
An extension part in which a part of the inner edge of the seal part is expanded outward from the predetermined region as seen from the plane side of the first workpiece;
The bonding structure characterized by having. 前記シール部は、前記第１のワークの平面側から見て、矩形状に形成され、
前記拡張部は、少なくとも前記シール部の隅に形成されていることを特徴とする請求項１記載の貼合構造体。 The seal portion is formed in a rectangular shape when viewed from the plane side of the first workpiece,
The bonding structure according to claim 1, wherein the extension portion is formed at least at a corner of the seal portion. 前記シール部は、前記第１のワークの平面側から見て、矩形状に形成され、
前記拡張部は、少なくとも前記シール部の辺に形成されていることを特徴とする請求項１記載の貼合構造体。 The seal portion is formed in a rectangular shape when viewed from the plane side of the first workpiece,
The bonding structure according to claim 1, wherein the extension part is formed at least on a side of the seal part. 前記拡張部は、前記第１のワークの平面側から見て、前記シール部の幅が狭い箇所により形成されていることを特徴とする請求項１記載の貼合構造体。   The bonding structure according to claim 1, wherein the extension portion is formed by a portion where the width of the seal portion is narrow when viewed from the plane side of the first workpiece. 前記拡張部は、前記シール部の一部を除去することにより形成されていることを特徴とする請求項１記載の貼合構造体。   The bonding structure according to claim 1, wherein the extension part is formed by removing a part of the seal part. 前記拡張部内の領域は、
前記第１のワークの平面側から見て、幅の狭い狭幅部と、幅の広い広幅部とを有し、
前記狭幅部の一端は、前記所定の領域に連通し、
前記狭幅部の他端は、前記広幅部に連通していることを特徴とする請求項１記載の貼合構造体。 The area within the extension is
As viewed from the plane side of the first workpiece, having a narrow narrow portion and a wide wide portion;
One end of the narrow portion communicates with the predetermined region,
The bonding structure according to claim 1, wherein the other end of the narrow part communicates with the wide part. 第１のワークの平坦面における所定の領域の周囲に、前記平坦面から***するように、接着剤によりシール部を形成するシール部形成工程と、
前記所定の領域に接着剤を供給する接着剤供給工程と、
前記所定の領域に供給された接着剤及び前記シール部に対して、第２のワークを貼り合わせる貼合工程と、
を含み、
前記シール部形成工程は、前記第１のワークの平面側から見て、前記シール部の内縁の一部を、前記所定の領域の外方へ拡大させた拡張部を、前記シール部と一体的に形成することを特徴とする貼合構造体の製造方法。 A seal portion forming step of forming a seal portion with an adhesive so as to protrude from the flat surface around a predetermined region on the flat surface of the first workpiece;
An adhesive supply step of supplying an adhesive to the predetermined region;
A bonding step of bonding a second workpiece to the adhesive and the seal portion supplied to the predetermined region,
Including
In the sealing part forming step, an extended part in which a part of the inner edge of the seal part is expanded outward from the predetermined region when viewed from the plane side of the first workpiece is integrated with the seal part. The manufacturing method of the bonding structure characterized by forming in this. 前記シール部形成工程は、前記シール部を幅の広狭が異なる連続した線状に形成することを特徴とする請求項７記載の貼合構造体の製造方法。   The said sealing part formation process forms the said sealing part in the continuous linear form from which width differs, The manufacturing method of the bonding structure of Claim 7 characterized by the above-mentioned. 第１のワークの平坦面における所定の領域の周囲に、前記平坦面から***するように、接着剤によりシール部を形成するシール部形成工程と、
前記第１のワークの平面側から見て、前記シール部の内縁の一部を、前記所定の領域の外方へ拡大させた拡張部を形成する拡張部形成工程と、
前記所定の領域に接着剤を供給する接着剤供給工程と、
前記所定の領域に供給された前記接着剤及び前記シール部に対して、第２のワークを貼り合わせる貼合工程と、
を含むことを特徴とする貼合構造体の製造方法。 A seal portion forming step of forming a seal portion with an adhesive so as to protrude from the flat surface around a predetermined region on the flat surface of the first workpiece;
An extension part forming step of forming an extension part in which a part of the inner edge of the seal part is expanded outward of the predetermined region as seen from the plane side of the first workpiece;
An adhesive supply step of supplying an adhesive to the predetermined region;
A bonding step of bonding a second workpiece to the adhesive and the seal portion supplied to the predetermined region;
The manufacturing method of the bonding structure characterized by including. 前記拡張部形成工程は、前記シール部の一部を除去する工程を含むことを特徴とする請求項９記載の貼合構造体の製造方法。   The method for producing a bonded structure according to claim 9, wherein the extension portion forming step includes a step of removing a part of the seal portion.
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