JP5612043B2 - Bonding member manufacturing method and bonding member manufacturing apparatus - Google Patents

Bonding member manufacturing method and bonding member manufacturing apparatus Download PDF

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JP5612043B2
JP5612043B2 JP2012193319A JP2012193319A JP5612043B2 JP 5612043 B2 JP5612043 B2 JP 5612043B2 JP 2012193319 A JP2012193319 A JP 2012193319A JP 2012193319 A JP2012193319 A JP 2012193319A JP 5612043 B2 JP5612043 B2 JP 5612043B2
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liquid resin
thickening
adhesive
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liquid crystal
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JP2012254460A (en
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英之 小梶
英之 小梶
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Origin Electric Co Ltd
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Description

本発明は接合部材の製造方法及び接合部材製造装置に関し、特に部材間に過不足なく液状樹脂を行き渡らせる接合部材の製造方法及び接合部材製造装置に関する。   The present invention relates to a joining member manufacturing method and a joining member manufacturing apparatus, and more particularly, to a joining member manufacturing method and a joining member manufacturing apparatus that allow liquid resin to be distributed between members without excessive or insufficient.

携帯電話のディスプレイ等に見られるように、液晶や有機発光素子が実装された素子基板と、素子基板を保護する封止基板とを、接着層を介して全面にわたって貼り合わせられて構成された表示装置(接合部材)がある(例えば、特許文献1参照。)。   A display constructed by bonding an element substrate on which a liquid crystal or an organic light emitting element is mounted and a sealing substrate that protects the element substrate over the entire surface through an adhesive layer as seen in a display of a mobile phone, etc. There exists an apparatus (joining member) (for example, refer patent document 1).

特開2004−247239号公報(図1等)JP 2004-247239 A (FIG. 1 etc.)

上述のような表示装置は、素子基板と封止基板との間に液状の接着剤(樹脂)を供給して両基板を貼り合わせることにより形成されるのが一般的であるが、接着剤を過不足なく基板全体に行き渡らせるのが難しい。つまり、両基板を貼り合わせる際に、両基板を接近させすぎると接着剤が基板からはみ出してしまい、製造機械を用いて両基板の間隔をあらかじめ算出された寸法に合わせたとしても一部に接着剤が行き渡らない部分が生じることがあった。   The display device as described above is generally formed by supplying a liquid adhesive (resin) between the element substrate and the sealing substrate and bonding the two substrates together. It is difficult to spread the entire board without excess or deficiency. In other words, when the two substrates are pasted together, if the two substrates are too close together, the adhesive will protrude from the substrate, and even if the distance between the two substrates is adjusted to a pre-calculated dimension using a manufacturing machine, it will adhere to a part. There was a case where the agent did not spread.

本発明は上述の課題に鑑み、部材間に過不足なく液状樹脂を行き渡らせることができる接合部材の製造方法及び接合部材製造装置を提供することを目的とする。   In view of the above-described problems, an object of the present invention is to provide a method for manufacturing a joining member and a joining member manufacturing apparatus capable of spreading a liquid resin between members without excess or deficiency.

上記目的を達成するために、本発明の第1の態様に係る接合部材の製造方法は、例えば図1及び図3を参照して示すと、板状の第1の部材Dと、板状の第2の部材Pとが、所定の増粘処理により粘度が増加する液状の合成樹脂である液状樹脂Gが硬化して形成された合成樹脂層GL(例えば図2参照)を介して接合された接合部材C(例えば図2参照)を製造する方法であって;第1の部材Dの塗布面Dfに液状樹脂Gを塗布する塗布工程(例えば図3(a)参照)と;塗布面Dfと第2の部材Pの接合面Pfとを、液状樹脂Gを介して対向させる対向工程(例えば図3(b)参照)と;塗布面Dfと接合面Pfとに挟まれた液状樹脂Gに対し、液状樹脂Gが塗布面Dfに接触している範囲に対して部分的に塗布面Dfから接合面Pfにわたって前記増粘処理を施す局部増粘工程(例えば図3(d)参照)と;第1の部材D、液状樹脂G、第2の部材Pを鉛直方向に配列する配列工程(例えば図3(b)参照)と;前記局部増粘工程及び前記配列工程が行われた後に、液状樹脂Gの上方となった部材Dの自重を液状樹脂Gに加える加自重工程(例えば図3(e)参照)と;上方となった部材Dの自重が加えられた液状樹脂Gの全体に前記増粘処理を施す全体増粘工程とを備える。局部増粘工程では、液状樹脂Gが弾性変形する粘度になるように増粘処理を施し、加自重工程では、液状樹脂Gの上方となった部材Dの自重を液状樹脂Gに加えることにより、局部増粘工程において液状樹脂Gの増粘処理が行われた部分を弾性変形させて増粘処理が施されていない液状樹脂Gを第1の部材Dと第2の部材Pとの間に形成された隙間の液状樹脂Gが展延されていない部分に行き渡らせる。   In order to achieve the above object, a method for manufacturing a joining member according to a first aspect of the present invention is shown in FIG. 1 and FIG. 3, for example. The second member P is joined via a synthetic resin layer GL (for example, see FIG. 2) formed by curing a liquid resin G, which is a liquid synthetic resin whose viscosity is increased by a predetermined thickening treatment. A method of manufacturing a joining member C (see, for example, FIG. 2); an application step (see, for example, FIG. 3A) of applying a liquid resin G to the application surface Df of the first member D; A facing step (see, for example, FIG. 3B) that causes the bonding surface Pf of the second member P to face each other through the liquid resin G; and the liquid resin G sandwiched between the coating surface Df and the bonding surface Pf The liquid resin G partially extends from the coating surface Df to the bonding surface Pf with respect to the range where the liquid resin G contacts the coating surface Df. Local thickening step (for example, see FIG. 3 (d)) for performing the above thickening treatment; and an alignment step for arranging the first member D, the liquid resin G, and the second member P in the vertical direction (for example, FIG. 3 ( b)); and after the local thickening step and the arranging step, the weight of the member D above the liquid resin G is added to the liquid resin G (for example, see FIG. 3E). And a whole thickening step of performing the thickening treatment on the whole liquid resin G to which the weight of the member D located above is added. In the local thickening step, a thickening process is performed so that the liquid resin G has a viscosity that is elastically deformed. In the self-weighting step, the weight of the member D above the liquid resin G is added to the liquid resin G. The portion of the liquid resin G that has been thickened in the local thickening step is elastically deformed to form a liquid resin G that has not been thickened between the first member D and the second member P. The liquid resin G in the gap is spread over the part where it is not spread.

このように構成すると、局部増粘工程において液状樹脂の粘度を部分的に増大させた後に、加自重工程において上方となった部材の自重を液状樹脂に加えるので、上方となった部材が適度に沈み込んで液状樹脂が展延し、第1の部材及び第2の部材の間に液状樹脂を過不足なく行き渡らせることができる。
また、本発明の第2の態様に係る接合部材の製造方法は、例えば図1を参照して示すと、上記本発明の第1の態様に係る接合部材の製造方法において、接合部材C(例えば図2参照)の合成樹脂層GL(例えば図2参照)が所定の厚さに構成され;対向工程が行われた後かつ局部増粘工程が行われる前に、液状樹脂Gが第1の部材D及び第2の部材Pからはみ出さない範囲で塗布面Dfと接合面Pfとを所定の厚さに相当する距離に近づける接近工程を備える。
If comprised in this way, after partially increasing the viscosity of liquid resin in a local thickening process, the weight of the member which became upper in the self-weighting process will be added to liquid resin, and the member which became upper is moderately The liquid resin sinks and spreads, and the liquid resin can be spread between the first member and the second member without excess or deficiency.
Moreover, when the manufacturing method of the joining member which concerns on the 2nd aspect of this invention is shown, for example with reference to FIG. 1, in the manufacturing method of the joining member which concerns on the said 1st aspect of the said invention, the joining member C (for example, The synthetic resin layer GL (see FIG. 2, for example) of FIG. 2 is formed to a predetermined thickness; the liquid resin G is the first member after the facing step and before the local thickening step. In the range which does not protrude from D and the 2nd member P, the approach process which brings the application surface Df and the joint surface Pf close to the distance equivalent to predetermined | prescribed thickness is provided.

また、本発明の第3の態様に係る接合部材の製造方法は、例えば図1及び図5を参照して示すと、上記本発明の第1の態様又は第2の態様に係る接合部材の製造方法において、前記局部増粘工程は、前記増粘処理が行われる増粘部分Geが複数あり、塗布面Dfの仮想垂線Lvの方向の投影面において、隣接する増粘部分Geを仮想線で結んで形成される仮想輪郭Ls内に前記加自重工程で液状樹脂Gの上方となる部材Dの重心Dcが来る位置であって、かつ、増粘部分Geが前記増粘処理の施されていない液状樹脂Gに囲まれる位置及び範囲に前記増粘処理を施す。   Moreover, when the manufacturing method of the joining member which concerns on the 3rd aspect of this invention is shown, for example with reference to FIG.1 and FIG.5, manufacture of the joining member which concerns on the said 1st aspect or 2nd aspect of this invention is demonstrated. In the method, the local thickening step includes a plurality of thickened portions Ge on which the thickening process is performed, and connects adjacent thickened portions Ge with virtual lines on the projection surface in the direction of the virtual perpendicular Lv of the coating surface Df. Is a position where the center of gravity Dc of the member D that is above the liquid resin G in the weighting step comes within the virtual contour Ls formed by the above-described weighting process, and the thickened portion Ge is not subjected to the thickening process. The thickening process is performed on the position and range surrounded by the resin G.

このように構成すると、塗布面と接合面との距離のバランスを維持したまま液状樹脂を部材の外周の隙間に行き渡らせることができる。   If comprised in this way, liquid resin can be spread over the clearance gap of the outer periphery of a member, maintaining the balance of the distance of an application surface and a joint surface.

また、本発明の第4の態様に係る接合部材の製造方法は、例えば図6(b)に示すように、上記本発明の第1の態様乃至第3の態様のいずれか1つの態様に係る接合部材の製造方法において、前記加自重工程において、液状樹脂Gの上方となる部材Dの上に、第1の部材D及び第2の部材Pとは別の第3の部材Wの自重を加える。   Moreover, the manufacturing method of the joining member which concerns on the 4th aspect of this invention concerns on any one aspect of the said 1st aspect thru | or the 3rd aspect of this invention, as shown, for example in FIG.6 (b). In the method for manufacturing a joining member, the weight of the third member W different from the first member D and the second member P is added on the member D above the liquid resin G in the weight-adding step. .

このように構成すると、液状樹脂の上方となる第1の部材及び第2の部材の一方が薄く形成されて単位面積当たりの質量が比較的小さい場合であっても液状樹脂の上方の部材及び第3の部材の自重により液状樹脂を行き渡らせることができる。   With this configuration, even if one of the first member and the second member that are above the liquid resin is formed thin and the mass per unit area is relatively small, the member and the first member above the liquid resin The liquid resin can be spread by the dead weight of the three members.

上記目的を達成するために、本発明の第5の態様に係る接合部材製造装置は、例えば図1に示すように、板状の第1の部材Dと、板状の第2の部材Pとが、所定の増粘処理により粘度が増加する液状の合成樹脂である液状樹脂Gが硬化して形成された合成樹脂層GL(例えば図2参照)を介して接合された接合部材C(例えば図2参照)を製造する装置であって;第1の部材Dの塗布面Dfに、液状樹脂Gを塗布する液状樹脂塗布装置21と;第1の部材Dを保持する第1の保持具11と;第2の部材Pを保持する第2の保持具31と;液状樹脂Gに前記増粘処理を施す増粘手段41と;塗布面Dfと第2の部材Pの接合面Pfとを液状樹脂Gを介して対向させるように第1の保持具11及び第2の保持具31の少なくとも一方を制御すると共に、塗布面Dfと接合面Pfとに挟まれた液状樹脂Gに対し、液状樹脂Gが塗布面Dfに接触している範囲に対して部分的に塗布面Dfから接合面Pfにわたって前記増粘処理を施すように増粘手段41を制御し、さらに前記部分的な増粘処理の後に液状樹脂Gの上方にある部材を保持している保持具の保持を開放するように第1の保持具11又は第2の保持具31を制御する制御装置60とを備える。液状樹脂Gに対して部分的に増粘処理を施す際は、液状樹脂Gが弾性変形する粘度になるように増粘処理を施す。また、制御装置60が液状樹脂Gの上方にある部材Dを保持している保持具11の保持を開放することにより、液状樹脂Gの上方にある部材Dの自重を液状樹脂Gに加え、部分的な増粘処理が行われた液状樹脂Gの部分を弾性変形させて、部分的な増粘処理が行われていない液状樹脂Gを第1の部材Dと第2の部材Pとの間に形成された隙間の液状樹脂Gが展延されていない部分に行き渡らせるように構成されている。   In order to achieve the above object, a joining member manufacturing apparatus according to a fifth aspect of the present invention includes a plate-like first member D, a plate-like second member P, as shown in FIG. However, a joining member C (for example, FIG. 2) joined via a synthetic resin layer GL (for example, FIG. 2) formed by curing a liquid resin G, which is a liquid synthetic resin whose viscosity is increased by a predetermined thickening treatment. 2); a liquid resin application device 21 for applying the liquid resin G to the application surface Df of the first member D; and a first holder 11 for holding the first member D; A second holding tool 31 for holding the second member P; a thickening means 41 for applying the above-described thickening treatment to the liquid resin G; and a coating surface Df and a bonding surface Pf of the second member P for the liquid resin When at least one of the first holder 11 and the second holder 31 is controlled so as to face each other via G In addition, with respect to the liquid resin G sandwiched between the application surface Df and the bonding surface Pf, the viscosity increase partially from the application surface Df to the bonding surface Pf with respect to the range where the liquid resin G is in contact with the application surface Df. The first holding tool is configured to control the thickening means 41 so as to perform the treatment, and to release the holding of the holding member holding the member above the liquid resin G after the partial thickening treatment. 11 or the control device 60 for controlling the second holding tool 31. When the thickening process is partially performed on the liquid resin G, the thickening process is performed so that the liquid resin G has a viscosity that elastically deforms. Further, by releasing the holding of the holder 11 that holds the member D above the liquid resin G by the control device 60, the weight of the member D above the liquid resin G is added to the liquid resin G, and the part The portion of the liquid resin G that has been subjected to a typical thickening treatment is elastically deformed, and the liquid resin G that has not been subjected to a partial thickening treatment is placed between the first member D and the second member P. The liquid resin G in the formed gap is configured to spread over a portion where it is not spread.

このように構成すると、部分的な増粘処理の後に液状樹脂の上方にある部材を保持している保持具の保持を開放するので、第1の部材及び第2の部材が面に垂直方向の投影面上で重なる範囲の全面に液状樹脂を行き渡らせることができる。   If comprised in this way, since the holding | maintenance of the holder holding the member above liquid resin is open | released after a partial thickening process, a 1st member and a 2nd member are perpendicular | vertical to a surface. The liquid resin can be spread over the entire surface of the overlapping area on the projection surface.

本発明によれば、液状樹脂が塗布面に接触している範囲に対して部分的に塗布面から接合面にわたって増粘処理を施した液状樹脂に、液状樹脂の上方となった部材の自重を加えるので、上方となった部材が適度に沈み込んで液状樹脂が展延し、第1の部材及び第2の部材の間に液状樹脂を過不足なく行き渡らせることができる。   According to the present invention, the weight of the member above the liquid resin is applied to the liquid resin that has been partially thickened from the application surface to the bonding surface with respect to the area where the liquid resin is in contact with the application surface. Therefore, the upper member sinks moderately to spread the liquid resin, and the liquid resin can be spread between the first member and the second member without excess or deficiency.

本発明の実施の形態に係る接合部材製造装置の概略を示す斜視図である。It is a perspective view which shows the outline of the joining member manufacturing apparatus which concerns on embodiment of this invention. 接合部材の構成を例示する図である。(a)は平面図、(b)は正面図である。It is a figure which illustrates the composition of a joining member. (A) is a top view, (b) is a front view. 接合部材の製造過程における接合部材製造装置の状態を説明する図である。It is a figure explaining the state of the joining member manufacturing apparatus in the manufacture process of a joining member. 液状樹脂が塗布された第1の部材を示す平面図である。It is a top view which shows the 1st member with which liquid resin was apply | coated. 局部増粘工程の状況を説明する図である。(a)は平面図、(b)は側面図である。It is a figure explaining the condition of a local thickening process. (A) is a top view, (b) is a side view. 本発明の実施の形態に係る変形例を示す図である。(a)は局部増粘工程における変形例、(b)は加自重工程における変形例の図である。It is a figure which shows the modification which concerns on embodiment of this invention. (A) is a modified example in the local thickening step, and (b) is a diagram of a modified example in the self-weighting step.

以下、図面を参照して本発明の実施の形態について説明する。なお、各図において互いに同一又は相当する部材には同一あるいは類似の符号を付し、重複した説明は省略する。   Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or similar members are denoted by the same or similar reference numerals, and redundant description is omitted.

まず図1を参照して、本発明の実施の形態に係る接合部材製造装置1を説明する。図1は、接合部材製造装置1の概略構成を示す斜視図である。接合部材製造装置1は、第1の部材Dを保持する第1の保持具としてのパネル載置台11を有する反転ユニット10と、第1の部材Dの塗布面Dfに液状樹脂としての接着剤Gを塗布する液状樹脂塗布装置としてのノズル21と、第2の部材Pを保持する第2の保持具としてのカバー載置台31と、接着剤Gの粘度を増加させる増粘手段としてのUV照射器41と、接合部材製造装置1の動作を制御する制御装置60とを備えている。ここで、接合部材製造装置1の詳細な説明に先立って、接合部材製造装置1で製造される接合部材の構成を例示する。   First, with reference to FIG. 1, the joining member manufacturing apparatus 1 which concerns on embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing a schematic configuration of a joining member manufacturing apparatus 1. The joining member manufacturing apparatus 1 includes a reversing unit 10 having a panel mounting table 11 as a first holder for holding a first member D, and an adhesive G as a liquid resin on the application surface Df of the first member D. Nozzle 21 as a liquid resin coating device for applying a coating material, cover mounting table 31 as a second holding tool for holding second member P, and UV irradiator as a thickening means for increasing the viscosity of adhesive G 41 and a control device 60 for controlling the operation of the joining member manufacturing apparatus 1. Here, prior to detailed description of the bonding member manufacturing apparatus 1, the configuration of the bonding member manufactured by the bonding member manufacturing apparatus 1 is illustrated.

図2は、接合部材Cの構成を例示する図であり、(a)は平面図、(b)は正面図である。接合部材Cは、第1の部材としての画像表示装置の一種である液晶パネルDと、第2の部材としての保護板として機能する保護ガラスPとが、接着剤層GLを挟んで構成された部品である。接着剤層GLは、接着剤G(図1参照)が展延されて形成された合成樹脂層としての中間層として機能する層である。本実施の形態で製造される接合部材Cは、典型的には携帯電話のディスプレイに用いられる部品である。以降、本実施の形態では、第1の部材が液晶パネルDであり、第2の部材が保護ガラスPであるとして説明する。   2A and 2B are diagrams illustrating the configuration of the joining member C, where FIG. 2A is a plan view and FIG. 2B is a front view. The joining member C is composed of a liquid crystal panel D, which is a kind of image display device as a first member, and a protective glass P functioning as a protective plate as a second member, with an adhesive layer GL interposed therebetween. It is a part. The adhesive layer GL is a layer that functions as an intermediate layer as a synthetic resin layer formed by spreading the adhesive G (see FIG. 1). The joining member C manufactured in the present embodiment is a part typically used for a display of a mobile phone. Hereinafter, in the present embodiment, it is assumed that the first member is the liquid crystal panel D and the second member is the protective glass P.

液晶パネルDは、携帯電話のディスプレイに適した大きさで、矩形板状に形成されている。保護ガラスPは、液晶パネルDよりも一回り大きな矩形板状に形成されている。接着剤層GLを形成する接着剤Gは、合成樹脂を含み、紫外線が照射されることで粘度が増加するように構成されている。さらに、接着剤Gは、粘度の増加によって流動性を失いゲル状になるように構成されている。後述する増粘処理を行う前の接着剤Gの粘度は、100〜5000mPa・sであることが好ましく、1000〜5000mPa・sであることがより好ましい。接着剤層GLは、液晶パネルDと保護ガラスPとを貼り付けると共に、硬化した際には液晶パネルDと保護ガラスPとの間隔を所定の間隔(所定の厚さに相当する距離)に保持する中間層の役割をするものである。接着剤層GLは、流動性を失ったゲル状になっている。接合部材C中における接着剤Gの量は、液晶パネルDと保護ガラスPとの間隔を所定の間隔とするために介在させるべき中間層の厚さとなる量になっている。   The liquid crystal panel D has a size suitable for a mobile phone display and is formed in a rectangular plate shape. The protective glass P is formed in a rectangular plate shape that is slightly larger than the liquid crystal panel D. The adhesive G that forms the adhesive layer GL includes a synthetic resin and is configured to increase in viscosity when irradiated with ultraviolet rays. Further, the adhesive G is configured to lose its fluidity and become a gel as the viscosity increases. The viscosity of the adhesive G before the thickening treatment described below is preferably 100 to 5000 mPa · s, and more preferably 1000 to 5000 mPa · s. The adhesive layer GL attaches the liquid crystal panel D and the protective glass P, and holds the distance between the liquid crystal panel D and the protective glass P at a predetermined distance (a distance corresponding to a predetermined thickness) when cured. It plays the role of an intermediate layer. The adhesive layer GL is in the form of a gel that loses fluidity. The amount of the adhesive G in the bonding member C is an amount that becomes the thickness of the intermediate layer that should be interposed in order to set the interval between the liquid crystal panel D and the protective glass P to a predetermined interval.

上述のように、本実施の形態では、第1の部材が矩形板状の液晶パネルDであり、第2の部材が矩形板状の保護ガラスPであるとして説明するが、第1の部材及び第2の部材としてこれら以外のものに適用することも可能である。第1の部材及び第2の部材は、別体であり、典型的には材質が異なるものであるが、同じ材質であってもよい。第1の部材及び第2の部材は、平面形状が矩形以外の多角形あるいは円形や楕円形であってもよい。   As described above, in the present embodiment, the first member is a rectangular plate-shaped liquid crystal panel D, and the second member is a rectangular plate-shaped protective glass P. However, the first member and The second member can be applied to other than these. The first member and the second member are separate bodies and are typically made of different materials, but may be the same material. The first member and the second member may have a planar shape that is a polygon other than a rectangle, a circle, or an ellipse.

再び図1に戻って接合部材製造装置1の説明を続ける。反転ユニット10は、パネル載置台11と、パネル載置台11を反転させるドライバ14と、パネル載置台11を鉛直方向に移動させるための垂直レール15とを有している。パネル載置台11は、厚みのある板状で、その平面形状が、液晶パネルDよりも一回り小さい矩形を基本形状として、四隅が切り落とされた形状になっている(図3(b)も参照)。パネル載置台11の切り落とされる四隅の面積は、UV照射器41で部分的に紫外線を当てたい面積とするとよい。パネル載置台11は、典型的には、液晶パネルDと接する面に真空ポンプ(不図示)に連通する複数の通気孔が形成されており、真空ポンプ(不図示)の作動により液晶パネルDを真空吸着できるように構成されている。   Returning to FIG. 1 again, the description of the joining member manufacturing apparatus 1 will be continued. The reversing unit 10 includes a panel mounting table 11, a driver 14 for reversing the panel mounting table 11, and a vertical rail 15 for moving the panel mounting table 11 in the vertical direction. The panel mounting table 11 is a plate having a thickness, and its planar shape is a rectangle that is slightly smaller than the liquid crystal panel D, with the four corners cut off (see also FIG. 3B). ). The area of the four corners to be cut off of the panel mounting table 11 may be an area where the UV irradiator 41 is desired to partially apply ultraviolet rays. The panel mounting table 11 typically has a plurality of vent holes communicating with a vacuum pump (not shown) on the surface in contact with the liquid crystal panel D, and the liquid crystal panel D is operated by the operation of the vacuum pump (not shown). It is configured so that it can be vacuum-adsorbed.

ドライバ14は、直方体の筐体14aの中にモータ(不図示)が収容されて構成されている。モータの回転軸(不図示)は筐体14aの面の1つから外部に突き出ており、その突き出た回転軸(不図示)に円柱状の反転軸13が取り付けられている。反転軸13は、回転軸(不図示)に対して両者の軸線が一致するように、かつ水平に延びるように取り付けられている。反転軸13の円柱状の側面とパネル載置台11の厚み部分とは、反転アーム12を介して連結されている。反転アーム12に対するパネル載置台11の取り付け態様は、パネル載置台11の天板(上面)が水平になる位置をホームポジションとすることができる向きとなっている。ドライバ14は、反転軸13を軸回りに回転させることにより、反転軸13の軸線からパネル載置台11までの距離を半径とする仮想円の円周に沿ってパネル載置台11を反転させることができるように構成されている。パネル載置台11は、この仮想円の円周にそってホームポジションの反対側(以下「反転位置」という。)に来ることができるように構成されている。   The driver 14 is configured by housing a motor (not shown) in a rectangular parallelepiped casing 14a. A rotation shaft (not shown) of the motor protrudes from one surface of the housing 14a to the outside, and a cylindrical reversing shaft 13 is attached to the protruding rotation shaft (not shown). The reversing shaft 13 is attached so that both axes coincide with a rotating shaft (not shown) and extend horizontally. The cylindrical side surface of the reversing shaft 13 and the thickness portion of the panel mounting table 11 are connected via a reversing arm 12. The panel mounting table 11 is attached to the reversing arm 12 in a direction in which the position where the top plate (upper surface) of the panel mounting table 11 is horizontal can be set as the home position. The driver 14 rotates the reversing shaft 13 around the axis, thereby reversing the panel mounting table 11 along the circumference of a virtual circle whose radius is the distance from the axis of the reversing shaft 13 to the panel mounting table 11. It is configured to be able to. The panel mounting table 11 is configured to be able to come to the opposite side of the home position (hereinafter referred to as “reverse position”) along the circumference of the virtual circle.

ドライバ14は、また、ギヤ(不図示)と、ギヤ(不図示)を回転させるモータ(不図示)とが筐体14a内に収容されている。ギヤ(不図示)を回転させるモータ(不図示)は、典型的には、反転軸13を回転させるのとは別のものである。ギヤ(不図示)は、鉛直方向に延びるように設置された垂直レール15に係合しており、ギヤ(不図示)が回転させられることによって筐体14aが垂直レール15に沿って上下に移動することができ、これに伴って筐体14aに間接的に接続されているパネル載置台11も鉛直方向に上下動をすることができるように構成されている。   The driver 14 also houses a gear (not shown) and a motor (not shown) for rotating the gear (not shown) in the housing 14a. A motor (not shown) for rotating a gear (not shown) is typically different from that for rotating the reversing shaft 13. The gear (not shown) is engaged with the vertical rail 15 installed so as to extend in the vertical direction, and the casing 14a moves up and down along the vertical rail 15 by rotating the gear (not shown). Accordingly, the panel mounting table 11 indirectly connected to the housing 14a is also configured to move up and down in the vertical direction.

カバー載置台31は、パネル載置台11が反転位置に来たときのパネル載置台11に向かい合う位置に設けられている。換言すれば、反転ユニット10は、液晶パネル(第1の部材)Dと保護ガラス(第2の部材)Pとを貼り合わせることができる構成になっている。カバー載置台31の天板(上面)は、水平になっている。本実施の形態では、カバー載置台31は鉛直方向に対しては固定されている。カバー載置台31は、厚みのある矩形板状に形成されている。カバー載置台31は、典型的には、保護ガラスPと接する面に真空ポンプ(不図示)に連通する複数の通気孔が形成されており、真空ポンプ(不図示)の作動により保護ガラスPを真空吸着できるように構成されている。   The cover mounting table 31 is provided at a position facing the panel mounting table 11 when the panel mounting table 11 comes to the inversion position. In other words, the reversing unit 10 is configured such that the liquid crystal panel (first member) D and the protective glass (second member) P can be bonded together. The top plate (upper surface) of the cover mounting table 31 is horizontal. In the present embodiment, the cover mounting table 31 is fixed in the vertical direction. The cover mounting table 31 is formed in a thick rectangular plate shape. The cover mounting table 31 is typically formed with a plurality of air holes communicating with a vacuum pump (not shown) on the surface in contact with the protective glass P, and the protective glass P is attached by the operation of the vacuum pump (not shown). It is configured so that it can be vacuum-adsorbed.

ノズル21は、ホームポジションにあるパネル載置台11に載置されている液晶パネルDの塗布面Dfに、接着剤Gを供給することができる位置に設けられている。ノズル21にはバルブ22が設けられており、バルブ22の開閉動作によりノズル21からの接着剤Gの吐出の有無をコントロールすることができるように構成されている。また、ノズル21は、ホームポジションにある液晶パネルDの上方を任意に移動することができる移動部材23に取り付けられており、移動部材23を介して液晶パネルDの上方を任意に移動することができるように構成されている。   The nozzle 21 is provided at a position where the adhesive G can be supplied to the application surface Df of the liquid crystal panel D mounted on the panel mounting table 11 at the home position. The nozzle 21 is provided with a valve 22 so that the presence or absence of the discharge of the adhesive G from the nozzle 21 can be controlled by opening and closing the valve 22. Further, the nozzle 21 is attached to a moving member 23 that can arbitrarily move above the liquid crystal panel D at the home position, and can arbitrarily move above the liquid crystal panel D via the moving member 23. It is configured to be able to.

UV照射器41は、接着剤Gの粘度を増加させるために紫外線を照射する機器である。UV照射器41は、反転位置にあるパネル載置台11に吸着保持された液晶パネルDの4つの角付近のそれぞれに紫外線を照射することができるように、4台が、反転位置にある液晶パネルDの4つの角付近の上方にそれぞれ設置されている(図3(d)も参照)。   The UV irradiator 41 is a device that irradiates ultraviolet rays in order to increase the viscosity of the adhesive G. The four UV irradiators 41 have the four liquid crystal panels in the inversion position so that each of the four corners of the liquid crystal panel D sucked and held by the panel mounting table 11 in the inversion position can be irradiated with ultraviolet rays. It is installed above each of the four corners of D (see also FIG. 3 (d)).

制御装置60は、反転ユニット10(その中でも特にドライバ14の2つのモータ)と信号ケーブルで接続されており、反転軸13を正逆方向に軸回りに回転させることができると共にドライバ14を鉛直上下に移動させることができるように構成されている。また制御装置60は、パネル載置台11に形成された複数の通気孔に連通する真空ポンプ(不図示)及びカバー載置台31に形成された複数の通気孔に連通する真空ポンプ(不図示)とそれぞれ信号ケーブルで接続されており、液晶パネルD及び保護ガラスPの真空吸着の有無をそれぞれ制御することができるように構成されている。また制御装置60は、バルブ22及び移動部材23と信号ケーブルで接続されており、バルブ22の開閉及びノズル21の移動を制御することができるように構成されている。また制御装置60は、UV照射器41と信号ケーブルで接続されており、紫外線の照射の有無を制御することができるように構成されている。制御装置60は、バルブ22及び移動部材23を制御する第1の制御装置と、反転ユニット10を制御する第2の制御装置と、真空ポンプ(不図示)を制御する第3の制御装置と、UV照射器41を制御する第4の制御装置とを、それぞれ別体として構成することもできるが、本実施の形態では、概念上の区別を可能にしつつも物理的には一体に構成されており、以下では特に区別することなく一体の制御装置60であるとして説明する。   The control device 60 is connected to the reversing unit 10 (particularly, the two motors of the driver 14) by a signal cable, and can rotate the reversing shaft 13 about the axis in the forward and reverse directions and move the driver 14 vertically and vertically. It is comprised so that it can be moved to. The control device 60 includes a vacuum pump (not shown) communicating with the plurality of ventilation holes formed on the panel mounting table 11 and a vacuum pump (not shown) communicating with the plurality of ventilation holes formed on the cover mounting table 31. Each is connected with a signal cable, and is configured to be able to control the presence or absence of vacuum suction of the liquid crystal panel D and the protective glass P. The control device 60 is connected to the valve 22 and the moving member 23 by a signal cable, and is configured to be able to control the opening and closing of the valve 22 and the movement of the nozzle 21. The control device 60 is connected to the UV irradiator 41 through a signal cable, and is configured to control the presence or absence of ultraviolet irradiation. The control device 60 includes a first control device that controls the valve 22 and the moving member 23, a second control device that controls the reversing unit 10, a third control device that controls a vacuum pump (not shown), The fourth control device that controls the UV irradiator 41 can be configured separately, but in this embodiment, it is physically configured integrally while allowing conceptual distinction. In the following description, it is assumed that the controller 60 is integrated without any particular distinction.

引き続き図3を参照して、接合部材製造装置1の作用を説明する。図3は、接合部材Cの製造過程における接合部材製造装置1の状態を説明する図である。接合部材製造装置1によって接合部材Cが製造される過程は、接合部材の製造方法が具現された本発明の1つの実施の形態である。以下の説明において、接合部材製造装置1の構成あるいは接合部材Cの構造について言及しているときは、適宜図1及び図2を参照することとする。接合部材Cを製造するに際し、まず、前工程で準備された液晶パネルDが収容されている液晶トレー(不図示)内の1つの液晶パネルDをロボット(不図示)がつかみ、塗布面Dfを上方に向けてパネル載置台11に載置する。他方、前工程で準備された保護ガラスPが収容されているガラストレー(不図示)内の1つの保護ガラスPをロボット(不図示)がつかみ、接合面Pfを上方に向けてカバー載置台31に載置する。液晶パネルD及び保護ガラスPがそれぞれパネル載置台11及びカバー載置台31に載置されたら、ノズル21を適宜移動させながらノズル21から接着剤Gを吐出して、液晶パネルDの塗布面Dfに接着剤Gを塗布する(塗布工程、図3(a)参照)。接着剤Gが塗布される際、液晶パネルDが載置されたパネル載置台11はホームポジションにある。   With continued reference to FIG. 3, the operation of the joining member manufacturing apparatus 1 will be described. FIG. 3 is a diagram illustrating a state of the joining member manufacturing apparatus 1 in the manufacturing process of the joining member C. The process of manufacturing the bonding member C by the bonding member manufacturing apparatus 1 is one embodiment of the present invention in which the method for manufacturing the bonding member is embodied. In the following description, when referring to the configuration of the bonding member manufacturing apparatus 1 or the structure of the bonding member C, reference will be made to FIGS. 1 and 2 as appropriate. When manufacturing the joining member C, first, the robot (not shown) grasps one liquid crystal panel D in the liquid crystal tray (not shown) in which the liquid crystal panel D prepared in the previous process is accommodated, and the coating surface Df is determined. Place it on the panel mounting table 11 facing upward. On the other hand, the robot (not shown) holds one protective glass P in the glass tray (not shown) in which the protective glass P prepared in the previous process is accommodated, and the cover mounting table 31 faces the joint surface Pf upward. Placed on. When the liquid crystal panel D and the protective glass P are mounted on the panel mounting table 11 and the cover mounting table 31, respectively, the adhesive G is discharged from the nozzle 21 while appropriately moving the nozzle 21 to the application surface Df of the liquid crystal panel D. Adhesive G is applied (application process, see FIG. 3A). When the adhesive G is applied, the panel mounting table 11 on which the liquid crystal panel D is mounted is in the home position.

ここで図4を併せて参照して、接着剤Gの塗布状態について説明する。図4は接着剤Gが塗布された液晶パネルDを示す平面図である。ノズル21は、制御装置60からの信号によりバルブ22の開閉を制御しながら塗布面Df上を移動して、主要部Gmと誘導部Gbとが形成されるように塗布面Dfに接着剤Gを塗布する。本実施の形態では、主要部Gmが、塗布面Dfに対し、塗布面Dfの図心を基準として縮小された略相似形に形成されている。「略相似形」とは、接着剤Gが展延されたときに塗布面Dfの外周に略行き渡る程度の形である。主要部Gmは、ノズル21が直線的に往復し、かつ、折り返す末端で直線の幅分だけ当該直線に対して直角に移動することにより、形成される。あるいは、矩形の塗布面Dfの長手方向にノズル21を移動させながら、誘導部Gbを形成する場合よりも、接着剤Gの単位時間当たりの吐出量を多くするかノズル21の移動速度を遅くすることによって形成してもよい。   Here, the application state of the adhesive G will be described with reference to FIG. FIG. 4 is a plan view showing the liquid crystal panel D to which the adhesive G is applied. The nozzle 21 moves on the application surface Df while controlling the opening and closing of the valve 22 by a signal from the control device 60, and applies the adhesive G to the application surface Df so that the main part Gm and the guide part Gb are formed. Apply. In the present embodiment, the main portion Gm is formed in a substantially similar shape that is reduced with respect to the application surface Df with reference to the centroid of the application surface Df. The “substantially similar shape” is a shape that substantially reaches the outer periphery of the application surface Df when the adhesive G is spread. The main portion Gm is formed by the nozzle 21 reciprocating linearly and moving at a right angle to the straight line by the width of the straight line at the end where the nozzle 21 turns back. Alternatively, the discharge amount per unit time of the adhesive G is increased or the movement speed of the nozzle 21 is made slower than when the guide portion Gb is formed while moving the nozzle 21 in the longitudinal direction of the rectangular application surface Df. May be formed.

誘導部Gbは、主要部Gmと液晶パネルDの角Deとを結ぶ仮想の誘導線Lb上に線状に形成されている。誘導線Lbは、典型的には角Deから主要部Gmまでの距離が最短となる点を通過する線あるいは角Deを2等分する線として規定されるが、接着剤Gが展延されたときに塗布面Dfに極力行き渡るようにする観点から適宜決定するとよい。誘導部Gbは、液晶パネルDが有する角Deの数(本実施の形態では4つ)だけ形成され、各誘導部Gbは、主要部Gm側の端部は主要部Gmに接し、角De側の端部はその角Deの近傍で止められている。ここで角Deの近傍とは、当該角Deに接することなく、かつ液晶パネルD及び保護ガラスPが仕上げの距離(接着剤層GLの厚さに相当する距離)まで接近する前に接着剤Gが角Deや辺Dsからはみ出ない程度の近さである。   The guide part Gb is formed in a linear shape on a virtual guide line Lb connecting the main part Gm and the corner De of the liquid crystal panel D. The guide line Lb is typically defined as a line that passes through a point where the distance from the corner De to the main part Gm is the shortest or a line that bisects the corner De, but the adhesive G is spread. It may be determined as appropriate from the viewpoint of sometimes spreading the coated surface Df as much as possible. The guiding portions Gb are formed by the number of corners De (four in the present embodiment) of the liquid crystal panel D, and each guiding portion Gb is in contact with the main portion Gm at the end on the main portion Gm side, and on the corner De side. Is stopped near the corner De. Here, the vicinity of the corner De refers to the adhesive G without contacting the corner De and before the liquid crystal panel D and the protective glass P approach the finishing distance (a distance corresponding to the thickness of the adhesive layer GL). Is close enough not to protrude from the corner De or the side Ds.

再び図3に戻って接合部材製造装置1の作用の説明を続ける。接着剤Gの塗布が完了したら、制御装置60は、反転軸13を回転させて、ホームポジションにある液晶パネルDを反転位置まで反転させ、塗布面Dfを接合面Pfに対向させる(対向工程、図3(b)参照)。このとき、鉛直方向に上方から下方に向かって、液晶パネルD、接着剤G、保護ガラスPが配列する(配列工程、図3(b)参照)。つまり、本実施の形態では、対向工程と配列工程とが同時に行われる。また、塗布面Dfと接合面Pfとの距離は、接合部材Cとなったときの接着剤層GLの厚さよりも大きく、さらに、典型的には塗布面Dfに塗布されている展延される前の接着剤Gが接合面Pfに接触しない位置(高さ)に、ドライバ14が存在するようになっている。   Returning to FIG. 3 again, the description of the operation of the joining member manufacturing apparatus 1 will be continued. When the application of the adhesive G is completed, the control device 60 rotates the reversal shaft 13 to reverse the liquid crystal panel D at the home position to the reversal position, so that the application surface Df faces the bonding surface Pf (facing process, (Refer FIG.3 (b)). At this time, the liquid crystal panel D, the adhesive G, and the protective glass P are arranged in the vertical direction from the upper side to the lower side (the arrangement step, see FIG. 3B). That is, in this embodiment, the facing process and the arranging process are performed simultaneously. In addition, the distance between the application surface Df and the bonding surface Pf is larger than the thickness of the adhesive layer GL when the bonding member C is formed, and is typically spread on the application surface Df. The driver 14 is present at a position (height) where the previous adhesive G does not contact the bonding surface Pf.

塗布面Dfを接合面Pfに対向させたら、制御装置60はドライバ14を垂直レール15に沿って下方に移動させ、塗布面Dfと接合面Pfとの距離が、接着剤層GLの所定の厚さに相当する距離に近づくように接近させる(接近工程、図3(c)参照)。接近工程は、塗布面Dfと接合面Pfとを機械(ドライバ14等)を用いて強制的に近づける工程である。接近工程において、比較的周囲に接着剤Gが多く存在する塗布面Dfの図心付近の接着剤Gが他の部分よりも垂れ下がっており、まずこの部分の接着剤Gが接合面Pfに接し、ここから放射状に広がるように接着剤Gが接合面Pfに接して行く。なお、前述の対向工程において、接着剤Gが塗布された液晶パネルDの方を反転させて保護ガラスPの鉛直上方に位置させることとしたので、塗布された接着剤Gの一部を垂れ下がらせることができ、これにより接着剤Gを比較的小さな面積で保護ガラスPに接触させ始めることができて、液晶パネルDと保護ガラスPとの間の接着剤Gへの気泡の混入を抑制することができる。塗布面Dfと接合面Pfとがさらに接近すると、塗布面Dfと接合面Pfとに挟まれた接着剤Gは展延し、液晶パネルDの外周に向かって徐々に広がって行く。このときには、主要部Gmの図心付近から始まった接着剤Gの接合面Pfへの接触が、誘導部Gbまで達している。   When the application surface Df is opposed to the joint surface Pf, the control device 60 moves the driver 14 downward along the vertical rail 15 so that the distance between the application surface Df and the joint surface Pf is a predetermined thickness of the adhesive layer GL. It approaches so that it may approach the distance equivalent to this (approach process, refer FIG.3 (c)). The approaching step is a step of forcibly bringing the application surface Df and the bonding surface Pf closer using a machine (driver 14 or the like). In the approaching process, the adhesive G in the vicinity of the centroid of the application surface Df where a relatively large amount of the adhesive G is present hangs down from the other portions. First, the adhesive G in this portion contacts the joint surface Pf, The adhesive G comes into contact with the joint surface Pf so as to spread radially from here. In the above-described facing step, since the liquid crystal panel D applied with the adhesive G is inverted and positioned vertically above the protective glass P, a part of the applied adhesive G is suspended. As a result, the adhesive G can be brought into contact with the protective glass P in a relatively small area, and mixing of bubbles into the adhesive G between the liquid crystal panel D and the protective glass P is suppressed. be able to. When the application surface Df and the bonding surface Pf further approach, the adhesive G sandwiched between the application surface Df and the bonding surface Pf spreads and gradually spreads toward the outer periphery of the liquid crystal panel D. At this time, the contact of the adhesive G on the joint surface Pf started from the vicinity of the centroid of the main part Gm reaches the guiding part Gb.

この際、展延により接着剤Gが辺Ds(図4参照)に達しても、角De(図4参照)に達していないことが起こりうる。そこで、接着剤Gを角Deに到達させるため、さらに接着剤Gを展延させようと塗布面Dfと接合面Pfとをさらに近づけると、辺Dsから接着剤Gがはみ出してしまうことがある。このような不都合が生じないようにするために、以下のような工程に進む。   At this time, even if the adhesive G reaches the side Ds (see FIG. 4) by spreading, it may not reach the corner De (see FIG. 4). Therefore, if the application surface Df and the bonding surface Pf are further brought closer to spread the adhesive G in order to make the adhesive G reach the corner De, the adhesive G may protrude from the side Ds. In order to prevent such inconvenience, the process proceeds to the following steps.

接近工程により、接着剤Gが辺Dsからはみ出さない範囲で塗布面Dfと接合面Pfとを接着剤層GLの所定の厚さに相当する距離にできるだけ近づけたら、制御装置60は、塗布面Dfと接合面Pfとの接近を停止したうえでUV照射器41を作動させ、液晶パネルDと保護ガラスPとに挟まれた接着剤Gに対して部分的に紫外線を照射して、紫外線が照射された部分の接着剤Gの粘度を増加させる増粘処理を行う(局部増粘工程、図3(d)参照)。なお、上述したパネル載置台11の四隅の切り落としは、この紫外線を照射したい部分がパネル載置台11によって妨げられることを回避することができるような位置及び形状で行われているとよい。局部増粘工程の間、液晶パネルDはパネル載置台11に、保護ガラスPはカバー載置台31に、それぞれ吸着保持されている。これにより、局部増粘工程において、塗布面Dfと接合面Pfとの面間距離を一定に保つことができる。   When the approaching step brings the application surface Df and the joint surface Pf as close as possible to the distance corresponding to the predetermined thickness of the adhesive layer GL within a range where the adhesive G does not protrude from the side Ds, the control device 60 The UV irradiator 41 is operated after stopping the approach between the Df and the bonding surface Pf, and the ultraviolet rays are partially irradiated to the adhesive G sandwiched between the liquid crystal panel D and the protective glass P. A thickening process for increasing the viscosity of the adhesive G in the irradiated part is performed (refer to a local thickening step, see FIG. 3D). It should be noted that the four corners of the panel mounting table 11 described above are preferably cut at positions and shapes that can prevent the panel mounting table 11 from obstructing the portion to be irradiated with ultraviolet rays. During the local thickening step, the liquid crystal panel D is held on the panel mounting table 11 and the protective glass P is held on the cover mounting table 31 by suction. Thereby, in the local thickening step, the inter-surface distance between the application surface Df and the bonding surface Pf can be kept constant.

ここで図5を参照して、部分的な紫外線の照射についてより詳しく説明する。図5は、局部増粘工程の状況を説明する図であり、(a)は平面図、(b)は側面図である。図5(a)に示す平面図は、塗布面Dfの垂線である仮想垂線Lv(図5(b)参照)が伸びる方向に投影した投影面に映し出される図でもある。図5(a)に示すように、上述の接近工程において接着剤Gが辺Dsからはみ出さない範囲で液晶パネルD及び保護ガラスPを接近させると、液晶パネルDに接着剤Gが行き渡らない部分が生じる。この状態で局部増粘工程に移行し、UV照射器41から照射された紫外線は、液晶パネルDを透過して接着剤Gに照射され、保護ガラスPに達する。接着剤Gの、紫外線が照射された部分である増粘部分Geは、紫外線の強さ及び照射時間に応じて粘度が増加して行き、典型的には、最終的に流動性を失いつつ弾性を有するゲル状になる。なお、見方によっては、流動性を失ったゲルは「粘度」という概念になじまないとも考えられるが、粘度とは流体のねばりの度合いであること、流体とは剪断応力の大きさに応じて連続的に変形する物体の総称であって物体の三態様のうちもっぱら気体と液体が該当するがプラズマや塑性を持つ固体を含める場合があること、及び固体と流体との区別は曖昧ではあるが一応粘度の大きさでこれらは分けられることに鑑み、本明細書では、ゲルは液体の粘度が高まったものの一形態であると解釈する。   Here, with reference to FIG. 5, the partial ultraviolet irradiation will be described in more detail. FIG. 5 is a diagram for explaining the situation of the local thickening step, where (a) is a plan view and (b) is a side view. The plan view shown in FIG. 5A is also a diagram projected on a projection surface projected in a direction in which a virtual perpendicular Lv (see FIG. 5B) that is a perpendicular of the application surface Df extends. As shown in FIG. 5A, when the liquid crystal panel D and the protective glass P are brought close to each other in a range where the adhesive G does not protrude from the side Ds in the above-described approaching step, the portion where the adhesive G does not spread over the liquid crystal panel D Occurs. In this state, the process proceeds to the local thickening step, and the ultraviolet light irradiated from the UV irradiator 41 passes through the liquid crystal panel D and is irradiated to the adhesive G and reaches the protective glass P. The thickened portion Ge, which is the portion of the adhesive G that has been irradiated with ultraviolet rays, increases in viscosity according to the intensity of the ultraviolet rays and the irradiation time, and typically is elastic while finally losing fluidity. It becomes a gel form having. Depending on the viewpoint, a gel that has lost its fluidity may not be compatible with the concept of “viscosity”. However, viscosity is the degree of stickiness of the fluid, and the fluid is continuous depending on the magnitude of shear stress. This is a general term for a body that deforms, and in the three forms of the object, gas and liquid correspond to each other, but there may be cases where plasma or plastic solids are included, and the distinction between solids and fluids is vague but for the time being. In view of the fact that these are divided according to the size of the viscosity, in this specification, the gel is interpreted as a form in which the viscosity of the liquid is increased.

局部増粘工程では、増粘部分Geは、典型的には上述のようにゲル状になるが、後の加自重工程において液晶パネルDの自重が接着剤Gに加えられたときに、増粘処理がされていない接着剤Gが液晶パネルD及び保護ガラスPからはみ出るほど液晶パネルDが沈み込むことがない程度の弾性を有する粘度にすればよい。これを別の観点から見ると、増粘部分Geは、硬化度が、30〜90%となるようにするとよい。硬化度は、弾性を向上させる観点から上限を80%あるいは70%とすることが好ましく、接着剤Gのはみ出しを抑制する観点から下限を40%あるいは50%とすることが好ましく、さらには60%としてもよい。なお、ここでいう硬化度とは、接着剤Gの粘度を増大させてゲル状にしたものをふるいに掛けて硬化しなかったものを除いた残りである「硬化したものの質量」の、「粘度を増大させる前の接着剤Gの質量」に対する百分率である。増粘部分Geの硬化度は、経験則に基づいてUV照射器41から照射される紫外線の強度や照射時間を適宜設定することによって調節される。   In the local thickening step, the thickened portion Ge typically becomes a gel as described above. However, when the self weight of the liquid crystal panel D is added to the adhesive G in the subsequent weight increasing step, the thickening portion Ge is increased. The adhesive G may be made to have such a viscosity as to prevent the liquid crystal panel D from sinking so that the untreated adhesive G protrudes from the liquid crystal panel D and the protective glass P. From a different point of view, the thickened portion Ge may have a curing degree of 30 to 90%. The upper limit of the degree of cure is preferably 80% or 70% from the viewpoint of improving elasticity, and the lower limit is preferably 40% or 50% from the viewpoint of suppressing the protrusion of the adhesive G, and more preferably 60%. It is good. The degree of cure here is the “viscosity” of the “mass of the cured product” that is the remainder excluding the gel G that has been increased in viscosity of the adhesive G and is not cured by sieving. Is the percentage of the “mass of adhesive G before increasing”. The degree of cure of the thickened portion Ge is adjusted by appropriately setting the intensity and irradiation time of the ultraviolet rays irradiated from the UV irradiator 41 based on empirical rules.

本実施の形態では、UV照射器41からスポット状の紫外線が照射されて塗布面Dfから接合面Pfに至るため、増粘部分Geは、両端が塗布面Df及び接合面Pfに接した円柱状に形成される。増粘部分Geは、典型的には複数形成され、本実施の形態では4つ形成されている。このとき、上方の部材である液晶パネルDの重心Dcが、平面視において、隣接する増粘部分Geを仮想線で結んで形成される仮想輪郭Lsの中に入る位置に、増粘部分Geを形成すると、後の加自重工程において液晶パネルDの自重を安定して支えることができるため好ましい。仮想輪郭Lsは、典型的には、その内部に増粘部分Ge全体が収まるように定義されるが、増粘部分Ge全体の重心を結んで形成されるように定義してもよい。増粘部分Geが2つである場合は仮想輪郭Lsが直線となる場合もあり得るが、この場合は、上方の部材である液晶パネルDの重心Dcが、仮想輪郭Lsの直線上に位置していることと仮想輪郭内に位置していることとが同義となる。さらに、増粘部分Geは、増粘処理の施されていない接着剤Gに囲まれる位置、換言すれば、展延された接着剤Gの外縁(図5(a)では破線で示されている)に接しない位置に形成されると、増粘されていない接着剤Gが外側に広がる動きを阻害することがないため好ましい。   In the present embodiment, since spot-like ultraviolet rays are irradiated from the UV irradiator 41 to reach the bonding surface Pf from the coating surface Df, the thickened portion Ge has a cylindrical shape whose both ends are in contact with the coating surface Df and the bonding surface Pf. Formed. A plurality of thickened portions Ge are typically formed, and four thickened portions Ge are formed in the present embodiment. At this time, the thickened portion Ge is placed at a position where the center of gravity Dc of the liquid crystal panel D as an upper member enters a virtual contour Ls formed by connecting adjacent thickened portions Ge with a virtual line in plan view. If formed, it is preferable because the weight of the liquid crystal panel D can be stably supported in the subsequent weight-adding step. The virtual contour Ls is typically defined so that the entire thickened portion Ge is accommodated therein, but may be defined so as to be formed by connecting the centroids of the entire thickened portion Ge. When there are two thickening portions Ge, the virtual contour Ls may be a straight line. In this case, the center of gravity Dc of the liquid crystal panel D as the upper member is positioned on the straight line of the virtual contour Ls. Is synonymous with being located within the virtual contour. Furthermore, the thickened portion Ge is a position surrounded by the adhesive G that has not been subjected to the thickening treatment, in other words, the outer edge of the spread adhesive G (shown by a broken line in FIG. 5A). It is preferable that the adhesive G that has not been thickened does not hinder the outward movement.

図3に戻って接合部材製造装置1の作用の説明を続ける。局部増粘工程が終了したら、液晶パネルDの吸着保持を解除して、液晶パネルDの自重を接着剤Gに加える(加自重工程、図3(e)参照)。このとき、典型的には、パネル載置台11の吸着保持を解除してパネル載置台11をホームポジションに戻す。増粘部分Geが形成された接着剤Gに液晶パネルDの自重を加えることにより、増粘部分Geが弾性変形して塗布面Dfと接合面Pfとの距離が変化しうるため、液晶パネルD外縁の接着剤Gが行き渡っていなかった部分にも、接着剤Gが行き渡る。これは、接着剤Gの表面張力あるいは塗布面Dfと接合面Pfとの間に形成された隙間に生じる毛細管現象によるものと考えられる。このとき、上方にある液晶パネルDは増粘部分Geに支持されるため、接着剤Gが液晶パネルD及び保護ガラスPからはみ出すほど液晶パネルDが沈み込むことを回避することができる。また、増粘部分Geは増粘されていない接着剤Gに囲まれているため、接着剤Gの液晶パネルDの角Deに向かう流動が阻害されることを回避することができる。なお、本発明者は、上方にある液晶パネルDをパネル載置台11で吸着保持して塗布面Dfと接合面Pfとの面間距離を一定に保ったままでも接着剤Gが液晶パネルDの全面に行き渡るか試みたが、この場合は接着剤Gが液晶パネルDの全面に行き渡らなかった。このことは、仮に上方の液晶パネルDの自重による移動がわずかであったとしても、液晶パネルDを移動可能な状態にしておくことが、接着剤Gを全面に行き渡らせるのに寄与していることを示すものと思われる。   Returning to FIG. 3, the description of the operation of the joining member manufacturing apparatus 1 will be continued. When the local thickening step is completed, the adsorption and holding of the liquid crystal panel D is released, and the weight of the liquid crystal panel D is added to the adhesive G (the weight adding step, see FIG. 3E). At this time, typically, the suction holding of the panel mounting table 11 is released and the panel mounting table 11 is returned to the home position. By adding the weight of the liquid crystal panel D to the adhesive G on which the thickened portion Ge is formed, the thickened portion Ge can be elastically deformed to change the distance between the coating surface Df and the bonding surface Pf. The adhesive G spreads also to the part where the adhesive G of the outer edge has not spread. This is considered to be due to the surface tension of the adhesive G or the capillary phenomenon generated in the gap formed between the application surface Df and the bonding surface Pf. At this time, since the upper liquid crystal panel D is supported by the thickened portion Ge, the liquid crystal panel D can be prevented from sinking as the adhesive G protrudes from the liquid crystal panel D and the protective glass P. Further, since the thickened portion Ge is surrounded by the adhesive G that has not been thickened, it is possible to prevent the flow of the adhesive G from the liquid crystal panel D toward the corner De. In addition, the inventor adsorbs and holds the liquid crystal panel D on the liquid crystal panel D even if the upper surface of the liquid crystal panel D is sucked and held by the panel mounting table 11 and the distance between the coating surface Df and the bonding surface Pf is kept constant. Attempts were made to reach the entire surface, but in this case, the adhesive G did not reach the entire surface of the liquid crystal panel D. This means that even if the upper liquid crystal panel D moves slightly due to its own weight, keeping the liquid crystal panel D movable contributes to spreading the adhesive G over the entire surface. It seems to show that.

加自重工程が完了したら、塗布面Dfと接合面Pfとの間に充填された接着剤G全体を流動しないように硬化させて、接着剤層GLを形成する(全体増粘工程)。接着剤Gは、照射された紫外線の積算量に応じて粘度が増加するように変性するため、UV照射器41から照射される紫外線の積算量を増加させることで接着剤Gを硬化させることができる。接着剤Gの硬化は、典型的には照射する紫外線を接着剤G全体に広げることで行われる。全体増粘工程は、典型的には、UV照射器41とは別の、照射した紫外線で液晶パネルDの全体をカバーできる照射器(不図示)で行われるが、UV照射器41を用いて行ってもよい。   When the self-weighting step is completed, the entire adhesive G filled between the application surface Df and the bonding surface Pf is cured so as not to flow to form the adhesive layer GL (overall thickening step). Since the adhesive G is denatured so that the viscosity increases in accordance with the integrated amount of irradiated ultraviolet rays, the adhesive G can be cured by increasing the integrated amount of ultraviolet rays irradiated from the UV irradiator 41. it can. Curing of the adhesive G is typically performed by spreading the irradiated ultraviolet rays over the entire adhesive G. The overall thickening step is typically performed by an irradiator (not shown) that is capable of covering the entire liquid crystal panel D with the irradiated ultraviolet rays, which is different from the UV irradiator 41. You may go.

以上のように、本実施の形態に係る接合部材製造装置1及び接合部材Cの製造方法は、局部増粘工程において、後の加自重工程において液晶パネルDの自重が接着剤Gに加えられたときに、増粘処理がされていない接着剤Gが全面に広がりつつ液晶パネルD及び保護ガラスPからはみ出ない程度に液晶パネルD及び保護ガラスPが近づくように変形する粘度の増粘部分Geが形成され、その後の加自重工程において液晶パネルDの自重を接着剤Gに加えることにより、塗布面Dfと接合面Pfとの間に形成された隙間の接着剤Gが展延されていない部分に接着剤Gを流動させることができるので、液晶パネルDと保護ガラスPとの間に過不足なく接着剤Gを行き渡らせることができる。   As described above, in the bonding member manufacturing apparatus 1 and the manufacturing method of the bonding member C according to the present embodiment, the self-weight of the liquid crystal panel D is added to the adhesive G in the subsequent self-weighting step in the local thickening step. In some cases, the thickened portion Ge having a viscosity that deforms so that the liquid crystal panel D and the protective glass P come close to the extent that the adhesive G that has not been thickened spreads over the entire surface and does not protrude from the liquid crystal panel D and the protective glass P. In the subsequent step of adding and weighting, the weight of the liquid crystal panel D is added to the adhesive G so that the adhesive G in the gap formed between the application surface Df and the bonding surface Pf is not spread. Since the adhesive G can be flowed, the adhesive G can be spread between the liquid crystal panel D and the protective glass P without excess or deficiency.

以上の説明では、第1の保持具が、液晶パネルDを真空吸着可能な板状のパネル載置台11であるとしたが、液晶パネルDの縁を把持するチャック機構で構成されていてもよい。同様に、第2の保持具が保護ガラスPの縁を把持するチャック機構で構成されていてもよい。   In the above description, the first holding tool is the plate-like panel mounting table 11 that can vacuum-suck the liquid crystal panel D. However, the first holding tool may be configured by a chuck mechanism that holds the edge of the liquid crystal panel D. . Similarly, the second holder may be constituted by a chuck mechanism that holds the edge of the protective glass P.

以上の説明では、接着剤Gを、第1の部材(液晶パネルD)に塗布するとしたが、第2の部材(保護ガラスP)に塗布してもよく、あるいは第1の部材(液晶パネルD)及び第2の部材(保護ガラスP)の双方に塗布してもよい。いずれの場合であっても、反転させる面に接着剤Gを塗布すると、接着剤Gをたれ下がらせることができ接触面積を小さくできて空気の混入を抑制することができるので好ましい。   In the above description, the adhesive G is applied to the first member (liquid crystal panel D). However, the adhesive G may be applied to the second member (protective glass P), or the first member (liquid crystal panel D). ) And the second member (protective glass P). In any case, it is preferable to apply the adhesive G to the surface to be reversed because the adhesive G can be dripped down, the contact area can be reduced, and air can be prevented from being mixed.

以上の説明では、対向工程と配列工程とが同時に行われるとしたが、対向工程において液晶パネルD、接着剤G、保護ガラスPを水平方向(あるいは鉛直方向以外の方向)に配列し、局部増粘工程の前あるいは局部増粘工程を経た後に、鉛直方向に配列(配列工程)してもよい。つまり、配列工程は、加自重工程の前に適宜行われればよい。   In the above description, the facing process and the arranging process are performed at the same time. It may be arranged in the vertical direction (arrangement process) before the viscosity process or after the local thickening process. That is, the arrangement process may be appropriately performed before the self-weighting process.

以上の説明では、増粘部分Geが、円柱状に形成されることとしたが、例えば図6(a)に示すような紫外線が細長く照射されるUV照射器41Aを用いて壁状(直方体状)に形成されることとしてもよく、その他の形状に形成されることとしてもよい。   In the above description, the thickened portion Ge is formed in a cylindrical shape. However, for example, a wall shape (cuboid shape) is used by using a UV irradiator 41A that is irradiated with an ultraviolet ray as shown in FIG. 6A. ) Or may be formed in other shapes.

以上の説明では、加自重工程では、液晶パネルDの自重を加えて液晶パネルDの自重以外の力を加えないこととしたが(これを「単独加自重工程」ということとする。)、上方の部材(液晶パネルD)の密度が小さい(軽量)場合等は、図6(b)に示すような第3の部材としての錘Wを上方の部材(液晶パネルD)の上に載置して、液晶パネルDの自重と錘Wの自重とを重畳して加えてもよい(これを「重畳加自重工程」ということとする。)。単独加自重工程及び重畳加自重工程は、それぞれ加自重工程の一形態であり、機械や油圧等の強制的な押圧力が作用していない自重を加える工程である。なお、重畳加自重工程においては、パネル載置台11を第3の部材として用いてもよい。この場合、反転軸13がモータから切り離されてニュートラルになっており、機械による強制力が作用しないようになる。このとき、パネル載置台11とバランスを取るカウンターウェイトを反転軸13に設け、上方の部材(液晶パネルD)に重畳する自重を調整可能に構成してもよい。   In the above description, in the weighting step, the weight of the liquid crystal panel D is added and no force other than the weight of the liquid crystal panel D is applied (this is referred to as the “single weighting step”). When the density of the member (liquid crystal panel D) is small (light weight), a weight W as a third member as shown in FIG. 6B is placed on the upper member (liquid crystal panel D). Thus, the weight of the liquid crystal panel D and the weight of the weight W may be added in a superimposed manner (this will be referred to as a “superposition weighting process”). The single self-weighting step and the superimposed self-weighting step are each a form of the self-weighting step, and are steps of adding the self-weight on which a forced pressing force such as a machine or hydraulic pressure does not act. In the superimposed weighting process, the panel mounting table 11 may be used as the third member. In this case, the reversing shaft 13 is separated from the motor and is neutral, so that the forcing force by the machine does not act. At this time, a counterweight that balances with the panel mounting table 11 may be provided on the reversing shaft 13 so that its own weight superimposed on the upper member (liquid crystal panel D) can be adjusted.

1 接合部材製造装置
11 パネル載置台
21 ノズル
31 カバー載置台
41 UV照射器
60 制御装置
C 接合部材
D 液晶パネル
Dc 重心
Df 塗布面
G 接着剤
GL 接着剤層
P 保護ガラス
Pf 接合面
W 錘
DESCRIPTION OF SYMBOLS 1 Joining member manufacturing apparatus 11 Panel mounting base 21 Nozzle 31 Cover mounting base 41 UV irradiation device 60 Control apparatus C Joining member D Liquid crystal panel Dc Center of gravity Df Application surface G Adhesive GL Adhesive layer P Protection glass Pf Joining surface W Weight

Claims (5)

板状の第1の部材と、板状の第2の部材とが、所定の増粘処理により粘度が増加する液状の合成樹脂である液状樹脂が硬化して形成された合成樹脂層を介して接合された接合部材を製造する方法であって;
前記第1の部材の塗布面に前記液状樹脂を塗布する塗布工程と;
前記塗布面と前記第2の部材の接合面とを、前記液状樹脂を介して対向させる対向工程と;
前記塗布面と前記接合面とに挟まれた前記液状樹脂に対し、前記液状樹脂が前記塗布面に接触している範囲に対して部分的に前記塗布面から前記接合面にわたって前記増粘処理を施す局部増粘工程と;
前記第1の部材、前記液状樹脂、前記第2の部材を鉛直方向に配列する配列工程とを備え
前記局部増粘工程は、前記配列工程において前記液状樹脂の上方となった部材の自重が前記液状樹脂に加えられたときに前記液状樹脂が弾性変形する粘度になるように前記部分的な増粘処理を施すように構成され;
前記局部増粘工程及び前記配列工程が行われた後に、前記液状樹脂の上方となった部材の自重を前記液状樹脂に加えることにより、前記局部増粘工程において前記液状樹脂の前記増粘処理が行われた部分を弾性変形させて前記増粘処理が施されていない前記液状樹脂を前記第1の部材と前記第2の部材との間に形成された隙間の前記液状樹脂が展延されていない部分に行き渡らせる加自重工程と;
上方となった部材の自重が加えられた前記液状樹脂の全体に前記増粘処理を施す全体増粘工程とをさらに備える;
接合部材の製造方法。
Through a synthetic resin layer formed by curing a liquid resin, which is a liquid synthetic resin whose viscosity is increased by a predetermined thickening treatment, between the plate-like first member and the plate-like second member. A method for producing a joined joint member;
An application step of applying the liquid resin to the application surface of the first member;
A facing step in which the application surface and the joint surface of the second member are opposed to each other through the liquid resin;
The coating surface and the liquid resin sandwiched between said bonding surface with respect to the previous SL increase over the part on the coated surface on the joint surface with respect to a range in which the liquid resin is in contact with the coated surface A local thickening step for applying a viscosity treatment;
With the first member, the liquid resin, and a sequence step of arranging the second member in the vertical direction;
In the local thickening step, the partial thickening is performed so that the liquid resin has a viscosity that elastically deforms when the weight of the member above the liquid resin in the arranging step is applied to the liquid resin. Configured to perform processing;
After the local thickening step and the arranging step are performed, the thickening treatment of the liquid resin is performed in the local thickening step by adding the weight of the member above the liquid resin to the liquid resin. The liquid resin that is not subjected to the thickening treatment by elastically deforming the portion that has been performed is spread out in the gap formed between the first member and the second member. A weight-in-weight process that spreads over the missing parts;
Further comprising a whole thickening process of applying the thickening process the whole of the liquid resin to its own weight is added members became upward;
A method for manufacturing a joining member.
前記接合部材の前記合成樹脂層が所定の厚さに構成され;
前記対向工程が行われた後かつ前記局部増粘工程が行われる前に、前記液状樹脂が前記第1の部材及び前記第2の部材からはみ出さない範囲で前記塗布面と前記接合面とを前記所定の厚さに相当する距離に近づける接近工程を備える;
請求項1に記載の接合部材の製造方法。
The synthetic resin layer of the joining member is configured to have a predetermined thickness;
After the facing step is performed and before the local thickening step is performed, the application surface and the bonding surface are within a range in which the liquid resin does not protrude from the first member and the second member. An approaching step of approaching a distance corresponding to the predetermined thickness;
The manufacturing method of the joining member of Claim 1.
前記局部増粘工程は、前記増粘処理が行われる増粘部分が複数あり、前記塗布面の仮想垂線の方向の投影面において、隣接する前記増粘部分を仮想線で結んで形成される仮想輪郭内に前記加自重工程で前記液状樹脂の上方となる部材の重心が来る位置であって、かつ、前記増粘部分が前記増粘処理の施されていない前記液状樹脂に囲まれる位置及び範囲に前記増粘処理を施す;
請求項1又は請求項2に記載の接合部材の製造方法。
In the local thickening step, there are a plurality of thickened portions on which the thickening process is performed, and a virtual surface formed by connecting adjacent thickened portions with virtual lines on the projection surface in the direction of the virtual perpendicular of the application surface. Position and range where the center of gravity of the member that is above the liquid resin in the weighting step comes within the contour and the thickened portion is surrounded by the liquid resin that has not been subjected to the thickening treatment The above thickening treatment is performed;
The manufacturing method of the joining member of Claim 1 or Claim 2.
前記加自重工程において、前記液状樹脂の上方となる部材の上に、前記第1の部材及び前記第2の部材とは別の第3の部材の自重を加える;
請求項1又は請求項2に記載の接合部材の製造方法。
In the step of adding weight, the weight of the third member different from the first member and the second member is added on the member above the liquid resin;
The manufacturing method of the joining member of Claim 1 or Claim 2.
板状の第1の部材と、板状の第2の部材とが、所定の増粘処理により粘度が増加する液状の合成樹脂である液状樹脂が硬化して形成された合成樹脂層を介して接合された接合部材を製造する装置であって;
前記第1の部材の塗布面に、前記液状樹脂を塗布する液状樹脂塗布装置と;
前記第1の部材を保持する第1の保持具と;
前記第2の部材を保持する第2の保持具と;
前記液状樹脂に前記増粘処理を施す増粘手段と;
前記塗布面と前記第2の部材の接合面とを前記液状樹脂を介して対向させるように前記第1の保持具及び前記第2の保持具の少なくとも一方を制御すると共に、前記塗布面と前記接合面とに挟まれた前記液状樹脂に対し、前記液状樹脂が前記塗布面に接触している範囲に対して部分的に前記塗布面から前記接合面にわたって前記増粘処理を施すように前記増粘手段を制御し、さらに前記部分的な増粘処理の後に前記液状樹脂の上方にある部材を保持している保持具の保持を開放するように前記第1の保持具又は前記第2の保持具を制御する制御装置とを備え;
前記部分的な増粘処理は、前記液状樹脂の上方にある部材の自重が前記液状樹脂に加えられたときに前記液状樹脂が弾性変形する粘度になるまで前記増粘処理を施すように構成され;
前記制御装置が前記液状樹脂の上方にある部材を保持している保持具の保持を開放することにより、前記液状樹脂の上方にある部材の自重を前記液状樹脂に加え、前記部分的な増粘処理が行われた前記液状樹脂の部分を弾性変形させて、前記部分的な増粘処理が行われていない前記液状樹脂を前記第1の部材と前記第2の部材との間に形成された隙間の前記液状樹脂が展延されていない部分に行き渡らせるように構成された;
接合部材製造装置。
Through a synthetic resin layer formed by curing a liquid resin, which is a liquid synthetic resin whose viscosity is increased by a predetermined thickening treatment, between the plate-like first member and the plate-like second member. An apparatus for producing a bonded joining member;
A liquid resin coating apparatus for coating the liquid resin on the coating surface of the first member;
A first holder for holding the first member;
A second holder for holding the second member;
A thickening means for subjecting the liquid resin to the thickening treatment;
Controlling at least one of the first holder and the second holder so that the application surface and the joint surface of the second member are opposed to each other through the liquid resin, and the application surface and the to said liquid resin sandwiched between the joint surface, so that the liquid resin is subjected to a pre-Symbol thickening process over from the part on the coated surface on the joint surface with respect to the range in contact with the coated surface To control the thickening means, and after the partial thickening treatment, the first holding tool or the first holding tool is released so as to release the holding tool holding the member above the liquid resin. A control device for controlling the two holders;
The partial thickening process is configured to perform the thickening process until the liquid resin has a viscosity that elastically deforms when the weight of a member above the liquid resin is applied to the liquid resin. ;
The control device releases the holding of the holding member holding the member above the liquid resin, thereby adding the weight of the member above the liquid resin to the liquid resin, thereby partially increasing the viscosity. The portion of the liquid resin that has been treated is elastically deformed, and the liquid resin that has not been subjected to the partial thickening treatment is formed between the first member and the second member. Configured to spread over the portion of the gap where the liquid resin is not extended;
Joining member manufacturing equipment.
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