JP2008281997A - Method for manufacturing image display - Google Patents

Method for manufacturing image display Download PDF

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JP2008281997A
JP2008281997A JP2008096150A JP2008096150A JP2008281997A JP 2008281997 A JP2008281997 A JP 2008281997A JP 2008096150 A JP2008096150 A JP 2008096150A JP 2008096150 A JP2008096150 A JP 2008096150A JP 2008281997 A JP2008281997 A JP 2008281997A
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resin composition
light
image display
manufacturing
cured
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JP5298605B2 (en
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Yusuke Kamata
勇介 鎌田
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Dexerials Corp
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Sony Chemical and Information Device Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently cure a resin in a forming-region of a light-shielding portion while attaining a high-luminance, high-contrast display without having display defects due to deformation of an image display unit during manufacture of a thin image display wherein the resin is interposed between a protective unit having the light-shielding portion and the image display unit. <P>SOLUTION: The method for manufacturing an image display device comprises a step wherein a photocurable resin composition is interposed between a base unit 2 having an image display unit such as a liquid crystal display panel 8 and a light-transmitting protective unit 3 having a light-shielding portion 5, and a cured resin layer 15 is formed by photocuring the resin composition. In this method, a resin composition having a curing shrinkage rate of not more than 5% and a storage modulus of the cured product at 25°C of not more than 1.0×10<SP>7</SP>Pa, thereby obtaining a cured resin layer 15 having a visible light transmittance of not less than 90% is used as the photocurable resin composition. The method further comprises a step wherein a curable resin composition 11 containing a thermal polymerization initiator is interposed at least between the light-shielding portion 5 and the base unit 2 and then the curable resin composition 11 is heated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば携帯電話等に用いられる液晶表示装置（ＬＣＤ）等の画像表示装置の製造方法に関し、特に、画像表示部上に透明な保護部を設けた画像表示装置の製造方法に関する。   The present invention relates to a method for manufacturing an image display device such as a liquid crystal display device (LCD) used in, for example, a mobile phone, and more particularly to a method for manufacturing an image display device in which a transparent protective portion is provided on an image display portion.

従来、この種の画像表示装置としては、例えば図７に示す液晶表示装置１０１が知られている。この液晶表示装置１０１は、液晶表示パネル１０２上に、例えば、ガラスやプラスチックからなる透明な保護部１０３を有している。   Conventionally, for example, a liquid crystal display device 101 shown in FIG. 7 is known as this type of image display device. The liquid crystal display device 101 has a transparent protection unit 103 made of, for example, glass or plastic on a liquid crystal display panel 102.

この場合、液晶表示パネル１０２表面及び偏光板（図示せず）を保護するため、保護部１０３との間にスペーサ１０４を介在させることによって液晶表示パネル１０２と保護部１０３との間に空隙１０５が設けられている。   In this case, in order to protect the surface of the liquid crystal display panel 102 and the polarizing plate (not shown), a gap 104 is provided between the liquid crystal display panel 102 and the protective part 103 by interposing a spacer 104 between the protective part 103. Is provided.

しかし、液晶表示パネル１０２と保護部１０３との間の空隙１０５の存在により、光の散乱がおき、それに起因してコントラストや輝度が低下し、また空隙１０５の存在はパネルの薄型化の妨げとなっている。   However, the presence of the gap 105 between the liquid crystal display panel 102 and the protection unit 103 causes light scattering, resulting in a decrease in contrast and brightness, and the presence of the gap 105 hinders thinning of the panel. It has become.

このような問題に鑑み、液晶表示パネルと保護部との間の空隙に樹脂を充填することも提案されているが（例えば特許文献１）、樹脂硬化物の硬化収縮の際の応力によって液晶表示パネルの液晶を挟持する光学ガラス板に変形が生じ、液晶材料の配向乱れ等の表示不良の原因となっている。   In view of such problems, it has also been proposed to fill the gap between the liquid crystal display panel and the protective portion with a resin (for example, Patent Document 1). However, the liquid crystal display is caused by the stress during curing shrinkage of the cured resin. Deformation occurs in the optical glass plate that sandwiches the liquid crystal of the panel, causing display defects such as alignment disorder of the liquid crystal material.

また、液晶表示装置１０１には、表示画像の輝度やコントラストを向上させるため、液晶表示パネル１０２の周囲の保護部１０３に、所謂ブラック・マトリクスと呼ばれる黒色枠状の遮光部（図示せず）が形成される。   Further, in the liquid crystal display device 101, a black frame-shaped light shielding portion (not shown) called a black matrix is provided in the protective portion 103 around the liquid crystal display panel 102 in order to improve the brightness and contrast of the display image. It is formed.

しかし、このような構成において、液晶表示パネル１０２と保護部１０３との間の空隙１０５に光硬化型樹脂組成物を充填して光硬化させようとすると、遮光部の形成領域にある光硬化型樹脂組成物は、光が十分に到達しないことにより未硬化となるおそれがある。   However, in such a configuration, if the space 105 between the liquid crystal display panel 102 and the protective portion 103 is filled with the photocurable resin composition and photocured, the photocurable type in the light shielding portion forming region is formed. The resin composition may become uncured due to insufficient light.

特開２００５-５５６４１号公報JP 2005-55641 A

本発明は、このような従来の技術の課題を考慮してなされたもので、その目的とするところは、遮光部を備えた保護部と画像表示部との間に樹脂を介在させた薄型の画像表示装置を製造するにあたり、画像表示部の変形に起因する表示不良を生じさせることなく、高輝度及び高コントラストの画像表示を可能とし、かつ、遮光部の形成領域の樹脂も十分に硬化させる技術を提供することにある。   The present invention has been made in consideration of such problems of the conventional technology, and the object of the present invention is to provide a thin type in which a resin is interposed between a protective part having a light shielding part and an image display part. When manufacturing an image display device, it is possible to display an image with high brightness and high contrast without causing a display defect due to deformation of the image display unit, and the resin in the formation region of the light shielding unit is also sufficiently cured. To provide technology.

上記目的を達成するため、本発明は、画像表示部を有する基部と、遮光部を有する透光性の保護部との間に光硬化型樹脂組成物を介在させ、光硬化させて樹脂硬化物層を形成する工程を有する画像表示装置の製造方法であって、
光硬化型樹脂組成物として、硬化収縮率が５％以下、硬化物の２５℃における貯蔵弾性率が１.０×１０7Ｐａ以下、樹脂硬化物層の可視光領域の光透過率を９０％以上とする樹脂組成物を使用し、
少なくとも遮光部と基部との間に熱重合開始剤を含有する硬化型樹脂組成物を介在させ、該硬化型樹脂組成物を加熱する工程を有する画像表示装置の製造方法を提供する。 In order to achieve the above object, the present invention provides a cured resin by photocuring a photocurable resin composition between a base having an image display portion and a translucent protective portion having a light shielding portion. A method of manufacturing an image display device including a step of forming a layer,
The photocurable resin composition has a cure shrinkage of 5% or less, a storage modulus of the cured product at 25 ° C. of 1.0 × 10 7 Pa or less, and a light transmittance in the visible light region of the resin cured product layer of 90%. Using the resin composition as described above,
Provided is a method for manufacturing an image display device, which includes a step of heating a curable resin composition containing a thermal polymerization initiator between at least a light-shielding part and a base, and heating the curable resin composition.

特に、遮光部と基部との間に介在させる、熱重合開始剤を含有する硬化型樹脂組成物を、光硬化型樹脂組成物とし、それに光照射と加熱を行う態様を提供する。   In particular, the present invention provides a mode in which a curable resin composition containing a thermal polymerization initiator interposed between a light shielding part and a base part is used as a photocurable resin composition, and light irradiation and heating are performed thereon.

また、この態様において、遮光部と基部との間に介在させる光硬化型樹脂組成物に対する光照射を、遮光部の形成面の外方側面側から行う態様を提供する。   Moreover, in this aspect, the aspect which performs the light irradiation with respect to the photocurable resin composition interposed between a light-shielding part and a base from the outer side surface side of the formation surface of a light-shielding part is provided.

本発明では、画像表示部を、液晶表示パネルとすることもできる。   In the present invention, the image display unit may be a liquid crystal display panel.

本発明では、保護部を、アクリル樹脂からなるものとすることもできる。   In the present invention, the protective part may be made of an acrylic resin.

本発明では、保護部を、光学ガラスからなるものとすることもできる。   In the present invention, the protective part may be made of optical glass.

本発明によれば、画像表示部を有する基部と、遮光部を有する透光性の保護部との間に光硬化型樹脂組成物を介在させ、光硬化させて樹脂硬化物層を形成するにあたり、少なくとも遮光部と基部との間には熱重合開始剤を含有する硬化型樹脂組成物を介在させ、その硬化型樹脂組成物を加熱する工程を有するので、遮光部の形成領域においても樹脂組成物を十分に硬化させることができる。   According to the present invention, a photocurable resin composition is interposed between a base portion having an image display portion and a translucent protective portion having a light shielding portion, and photocured to form a cured resin layer. Since there is a step of interposing a curable resin composition containing a thermal polymerization initiator between at least the light-shielding part and the base and heating the curable resin composition, the resin composition also in the formation region of the light-shielding part The object can be sufficiently cured.

さらに、本発明において、非遮光部と基部との間に介在させる光硬化型樹脂組成物には熱重合開始剤を含有させず、遮光部と基部との間にのみ熱重合開始剤を含有する光硬化型樹脂組成物を介在させると、熱重合開始剤の使用量を減少させることができる。また、保護部と基部の間に介在させる硬化型樹脂組成物全体に熱重合開始剤を含有させ、加熱硬化させる場合に比して加熱時間及び加熱温度を相対的に小さくすることができるので、画像表示装置の周辺で多用されているプラスチック材料に与える影響を小さくすることができる。   Further, in the present invention, the photocurable resin composition interposed between the non-light-shielding part and the base part does not contain a thermal polymerization initiator, but contains a thermal polymerization initiator only between the light-shielding part and the base part. When the photocurable resin composition is interposed, the amount of the thermal polymerization initiator used can be reduced. In addition, since the entire curable resin composition interposed between the protective part and the base part contains a thermal polymerization initiator, the heating time and the heating temperature can be relatively reduced as compared with the case of heat curing, The influence on the plastic material frequently used in the periphery of the image display device can be reduced.

また、本発明において、遮光部と基部との間に介在させる光硬化型樹脂組成物に対する光照射を、遮光部の形成領域の側面側から行うと、遮光部の形成領域の光硬化型樹脂組成物に確実に光が照射されるので、その領域の光硬化型樹脂組成物を十分に硬化させることができる。   Further, in the present invention, when light irradiation to the photocurable resin composition interposed between the light shielding part and the base part is performed from the side surface side of the light shielding part forming region, the photocurable resin composition in the light shielding part forming region is performed. Since the object is reliably irradiated with light, the photocurable resin composition in that region can be sufficiently cured.

更に、樹脂が硬化する際に蓄積される内部応力は、硬化後の貯蔵弾性率と硬化収縮率の積で近似できるところ、本発明によれば、光硬化型樹脂組成物として、硬化収縮率が５％以下、硬化物の２５℃における貯蔵弾性率が１.０×１０7Ｐａ以下のものを使用するので、画像表示部及び保護部に対し、樹脂の硬化収縮時の応力の影響を最小限に抑えることができる。したがって、画像表示部及び保護部に歪みがほとんど生じない。その結果、表示不良のない高輝度及び高コントラストの画像表示が可能になる。 Furthermore, the internal stress accumulated when the resin is cured can be approximated by the product of the storage elastic modulus after curing and the curing shrinkage rate. According to the present invention, the photocurable resin composition has a curing shrinkage rate. 5% or less and the cured product having a storage elastic modulus at 25 ° C. of 1.0 × 10 7 Pa or less is used, so that the influence of stress at the time of resin curing shrinkage is minimized on the image display part and the protective part. Can be suppressed. Therefore, almost no distortion occurs in the image display unit and the protection unit. As a result, it is possible to display an image with high luminance and high contrast without display defects.

特に、画像表示部が液晶表示パネルである場合には、液晶材料の配向乱れ等の表示不良を確実に防止して高品位の画像表示を行うことができる。   In particular, when the image display unit is a liquid crystal display panel, display defects such as disorder of alignment of the liquid crystal material can be reliably prevented and high-quality image display can be performed.

さらに、本発明によれば、画像表示部と保護部との間に樹脂硬化物が介在するので、衝撃に強くなる。   Furthermore, according to the present invention, since the cured resin is interposed between the image display unit and the protection unit, it is strong against impact.

加えて、画像表示部と保護部との間に空隙を設けていた従来例に比して薄型の画像表示装置を提供することが可能となる。   In addition, it is possible to provide a thin image display device as compared with the conventional example in which a gap is provided between the image display unit and the protection unit.

以下、本発明の好ましい実施の形態を図面を参照して詳細に説明する。なお、各図中、同一符号は同一又は同等の構成要素を表している。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same numerals indicate the same or equivalent components.

図１（ａ）〜（ｃ）は、本発明に係る画像表示装置の製造方法の一つの実施形態の要部を示す断面工程図、図２は、同実施形態における画像表示装置の製造工程の要部を示す平面図である。   1A to 1C are cross-sectional process diagrams showing the main part of one embodiment of a method for manufacturing an image display device according to the present invention, and FIG. 2 shows a process for manufacturing the image display device in the same embodiment. It is a top view which shows the principal part.

図１に示すように、本実施形態では、図示しない駆動回路に接続され所定の画像表示を行う画像表示部を有する基部２と、保護部３とを樹脂硬化物層１５により貼り合わせる。   As shown in FIG. 1, in the present embodiment, a base 2 having an image display unit that is connected to a drive circuit (not shown) and displays a predetermined image, and a protection unit 3 are bonded together by a cured resin layer 15.

ここで、画像表示装置としては、特に限定されるものではなく、種々のものに適用することができ、例えば、携帯電話、携帯ゲーム機器等の液晶表示装置があげられる。以下、液晶表示装置を製造する場合を例にとって本発明を説明する。   Here, the image display device is not particularly limited and can be applied to various types of devices, for example, liquid crystal display devices such as mobile phones and portable game devices. Hereinafter, the present invention will be described taking a case of manufacturing a liquid crystal display device as an example.

保護部３は、基部２と同程度の大きさの例えば矩形平板状の透光性部材４から形成されている。この透光性部材４としては、例えば、光学ガラスやプラスチック（アクリル樹脂等）を好適に用いることができる。   The protection part 3 is formed of a light-transmitting member 4 having, for example, a rectangular flat plate shape having the same size as the base part 2. As this translucent member 4, optical glass and plastics (acrylic resin etc.) can be used suitably, for example.

透光性部材４の基部２側の面の液晶表示パネル８の周縁に対応する領域には、例えば黒色枠状の遮光部５が設けられている。この遮光部５は、例えば印刷法によって均一の厚さの層状に形成されている。   In a region corresponding to the peripheral edge of the liquid crystal display panel 8 on the surface of the translucent member 4 on the base 2 side, for example, a black frame-shaped light shielding portion 5 is provided. The light shielding portion 5 is formed in a layer shape having a uniform thickness by, for example, a printing method.

一方、基部２は、例えば枠状のフレーム６を有し、このフレーム６の内側の領域に液晶表示パネル（画像表示部）８が取り付けられ、さらに、この液晶表示パネル８の装置背面側の部位にバックライト７が取り付けられている。   On the other hand, the base 2 has, for example, a frame-like frame 6, and a liquid crystal display panel (image display unit) 8 is attached to a region inside the frame 6, and further, a portion of the liquid crystal display panel 8 on the back side of the apparatus. A backlight 7 is attached to the main body.

また、図２に示すように、フレーム６の画像表示面側の周縁部には、複数のスペーサ９が所定の間隔をおいて断続的に設けられている。このスペーサ９の厚さは０．０５〜１．５ｍｍ程度であり、これにより液晶表示パネル８と保護部３との表面間距離が１ｍｍ程度に保持される。   In addition, as shown in FIG. 2, a plurality of spacers 9 are intermittently provided at predetermined intervals on the periphery of the frame 6 on the image display surface side. The spacer 9 has a thickness of about 0.05 to 1.5 mm, so that the distance between the surfaces of the liquid crystal display panel 8 and the protection unit 3 is maintained at about 1 mm.

また、本実施形態では、特に基部２のフレーム６の貼り合わせ面６ａと保護部３の遮光部５の貼り合わせ面５ａとが平行になっている。   Further, in the present embodiment, in particular, the bonding surface 6 a of the frame 6 of the base portion 2 and the bonding surface 5 a of the light shielding portion 5 of the protection portion 3 are parallel to each other.

本実施形態では、このような保護部３と基部２を貼り合わせるにあたり、まず、図１（ａ）に示すように、基板２上のスペーサ９の内側の領域に、光硬化も熱硬化も可能な硬化型樹脂組成物１１を所定量滴下する。   In the present embodiment, when the protective part 3 and the base part 2 are bonded together, first, as shown in FIG. 1A, photocuring or heat curing is possible in the region inside the spacer 9 on the substrate 2. A predetermined amount of curable resin composition 11 is dropped.

この滴下量は、保護部３と基部２を貼り合わせた後の樹脂硬化物層１５の厚みが５０〜２００μｍとなるようにすることが好ましい。   The dripping amount is preferably such that the thickness of the cured resin layer 15 after the protective portion 3 and the base portion 2 are bonded is 50 to 200 μm.

この硬化型樹脂組成物１１としては、その樹脂硬化物の貯蔵弾性率（２５℃）を１×１０7Ｐａ以下、好ましくは１×１０3〜１×１０6Ｐａとし、樹脂硬化物の屈折率を好ましくは１．４５以上１．５５以下、より好ましくは１．５１以上１．５２以下とし、さらに、樹脂硬化物の厚さが１００μｍの場合の可視光領域の透過率を９０％以上とするように調製したものを用いる。 The curable resin composition 11 has a storage elastic modulus (25 ° C.) of the resin cured product of 1 × 10 7 Pa or less, preferably 1 × 10 3 to 1 × 10 6 Pa, and the refractive index of the resin cured product. Is preferably 1.45 or more and 1.55 or less, more preferably 1.51 or more and 1.52 or less, and the transmittance in the visible light region is 90% or more when the thickness of the resin cured product is 100 μm. The one prepared as described above is used.

一般に、硬化型樹脂組成物を構成する主要な樹脂成分としては共通でも、共に配合する樹脂成分あるいはモノマー成分等が異なると、それを硬化させた樹脂硬化物の貯蔵弾性率（２５℃）が１×１０7Ｐａを超える場合があるが、そのような樹脂硬化物となる樹脂組成物は、硬化型樹脂組成物１１としては用いない。 In general, even if the main resin component constituting the curable resin composition is common, if the resin component or monomer component blended together is different, the storage elastic modulus (25 ° C.) of the cured resin obtained by curing the resin component is 1 Although it may exceed 10 7 Pa, a resin composition that becomes such a cured resin is not used as the curable resin composition 11.

また、この硬化型樹脂組成物１１は、硬化収縮率が、好ましくは５．０％以下、より好ましくは４．５％以下、特に好ましくは４．０％以下、さらに好ましくは０〜２％となるように調製したものとする。これにより、硬化型樹脂組成物１１が硬化する際に樹脂硬化物に蓄積される内部応力を低減させることができ、樹脂硬化物層１５と液晶表示パネル８又は保護部３との界面に歪みができることを防止できる。したがって、硬化型樹脂組成物１１を液晶表示パネル８と保護部３との間に介在させ、その硬化型樹脂組成物１１を硬化させた場合に、樹脂硬化物層１５と液晶表示パネル８又は保護部３との界面で生じる光の散乱を低減させることができ、表示画像の輝度を高めると共に、視認性を向上させることができる。   Further, this curable resin composition 11 has a curing shrinkage ratio of preferably 5.0% or less, more preferably 4.5% or less, particularly preferably 4.0% or less, and further preferably 0 to 2%. It shall be prepared as follows. Thereby, when the curable resin composition 11 is cured, the internal stress accumulated in the cured resin can be reduced, and the interface between the cured resin layer 15 and the liquid crystal display panel 8 or the protection unit 3 is distorted. You can prevent what you can do. Therefore, when the curable resin composition 11 is interposed between the liquid crystal display panel 8 and the protective portion 3 and the curable resin composition 11 is cured, the cured resin layer 15 and the liquid crystal display panel 8 or the protection are provided. Scattering of light generated at the interface with the portion 3 can be reduced, the brightness of the display image can be increased, and visibility can be improved.

なお、樹脂組成物が硬化する際に樹脂硬化物に蓄積される内部応力の程度は、樹脂組成物を平板上に滴下し、それを硬化させて得られる樹脂硬化物の平均表面粗度によって評価することができる。例えば、樹脂組成物２ｍｇをガラス板上又はアクリル板上に滴下し、それをＵＶ照射により９０％以上の硬化率で硬化させて得られる樹脂硬化物の平均表面粗度が６．０ｎｍ以下であれば、液晶表示パネル８と保護部３との間に硬化型樹脂組成物を介在させ、それを硬化させた場合にそれらの界面に生じる歪みが実用上無視できる。これに関し、本実施の態様で使用する硬化型樹脂組成物１１によれば、この平均表面粗度を６．０ｎｍ以下、好ましくは５．０ｎｍ以下、より好ましくは１〜３ｎｍにすることができる。したがって、樹脂硬化物の界面に生じる歪みを実用上無視することができる。   The degree of internal stress accumulated in the cured resin when the resin composition is cured is evaluated by the average surface roughness of the cured resin obtained by dropping the resin composition on a flat plate and curing it. can do. For example, the average surface roughness of a cured resin obtained by dropping 2 mg of a resin composition on a glass plate or an acrylic plate and curing it with UV irradiation at a curing rate of 90% or more should be 6.0 nm or less. For example, when a curable resin composition is interposed between the liquid crystal display panel 8 and the protective part 3 and cured, the distortion generated at the interface between them can be ignored in practice. In this regard, according to the curable resin composition 11 used in this embodiment, the average surface roughness can be 6.0 nm or less, preferably 5.0 nm or less, and more preferably 1 to 3 nm. Therefore, the distortion generated at the interface of the cured resin can be ignored in practice.

ここで、ガラス板としては、液晶セルの液晶を挟持するガラス板や液晶セルの保護板として使用されているものを好ましく使用できる。また、アクリル板としては、液晶セルの保護板として使用されているものを好ましく使用できる。これらのガラス板やアクリル板の平均表面粗度は、通常、１．０ｎｍ以下である。   Here, as a glass plate, what is used as a glass plate which clamps the liquid crystal of a liquid crystal cell, or a protective plate of a liquid crystal cell can be used preferably. Moreover, as an acrylic board, what is used as a protective plate of a liquid crystal cell can be used preferably. The average surface roughness of these glass plates and acrylic plates is usually 1.0 nm or less.

このような硬化型樹脂組成物１１は、オリゴマー乃至ポリマーと、アクリレート系モノマーと、光重合開始剤と、熱重合開始剤とを主剤とし、その他の添加剤、例えば増感剤、可塑剤、透明粒子等を本発明の目的の範囲で添加したものを使用することができる。   Such a curable resin composition 11 mainly comprises an oligomer or a polymer, an acrylate monomer, a photopolymerization initiator, and a thermal polymerization initiator, and other additives such as a sensitizer, a plasticizer, a transparent What added particle | grains etc. in the range of the objective of this invention can be used.

ここで、オリゴマー乃至ポリマーとしては、ポリウレタンアクリレート、ポリブタジエンアクリレート、ポリイソプレンアクリレート又はそのエステル化物、テルペン系水素添加樹脂、ブタジエン重合体、エポキシアクリレートオリゴマー等を好適に使用することができる。   Here, as the oligomer or polymer, polyurethane acrylate, polybutadiene acrylate, polyisoprene acrylate or esterified product thereof, terpene-based hydrogenated resin, butadiene polymer, epoxy acrylate oligomer, or the like can be preferably used.

アクリレート系モノマーとしては、イソボルニルアクリレート、ジシクロペンテニルオキシエチルメタクリレート、ヒドロキシメチルメタクリレート、ヒドロキシプロピルメタクリレート、ヒドロキシブチルメタクリレート、ラウリルアクリレート、ベンジルアクリレート等を好適に使用することができる。   As the acrylate monomer, isobornyl acrylate, dicyclopentenyloxyethyl methacrylate, hydroxymethyl methacrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, lauryl acrylate, benzyl acrylate and the like can be preferably used.

光重合開始剤としては、１-ヒドロキシ-シクロヘキシル-フェニルーケトン（商品名ＩＲＧＡＣＵＲＥ １８４:チバ・スペシャリティ・ケミカルズ社製）、2-ヒロドキシ-1-｛4-[4-（2-ヒドロキシ-2-メチル-プロピオニル）-ベンジル]フェニル｝-2-メチル-プロパン-1-オン（商品名ＩＲＧＡＣＵＲＥ １２７:チバ・スペシャリティ・ケミカルズ社製）、1-ヒドロキシ-シクロヘキシル-フェニル-ケトン（商品名ＤＡＲＯＣＵＲ １１７３：チバ・スペシャリティ・ケミカルズ社製）等を好適に用いることができるが、これらには特に限定されない。   As a photopolymerization initiator, 1-hydroxy-cyclohexyl-phenyl-ketone (trade name IRGACURE 184: manufactured by Ciba Specialty Chemicals), 2-hydroxy-1- {4- [4- (2-hydroxy-2- Methyl-propionyl) -benzyl] phenyl} -2-methyl-propan-1-one (trade name IRGACURE 127: manufactured by Ciba Specialty Chemicals), 1-hydroxy-cyclohexyl-phenyl-ketone (trade name DAROCUR 1173: Ciba (Specialty Chemicals Co., Ltd.) can be preferably used, but is not particularly limited thereto.

なお、保護部３には、表示部に対する紫外線保護の観点から紫外線領域をカットする機能が付与されている場合がある。その場合には、本発明で用いる光重合開始剤としては、可視光領域でも硬化できる光重合開始剤（例えば、商品名ＳｐｅｅｄＣｕｒｅＴＰＯ:日本シイベルヘグナー（株）製等）を用いることが好ましい。   The protection unit 3 may be given a function of cutting the ultraviolet region from the viewpoint of ultraviolet protection for the display unit. In that case, as the photopolymerization initiator used in the present invention, it is preferable to use a photopolymerization initiator that can be cured even in the visible light region (for example, trade name SpeedCure TPO: manufactured by Nippon Shibel Hegner Co., Ltd.).

熱重合開始剤としては、熱により開始剤として作用する有機過酸化物等を好適に用いることができる。なお、本実施の形態のように、画像表示部として液晶表示パネル８を用いる場合には、そのパネルの材料には、アクリル樹脂などのプラスチック材料が用いられることが多く、その耐熱性が８０℃程度であることから、熱重合開始剤としては、有機過酸化物の１０時間半減期温度が１００℃以下のものを用いることが好ましい。   As the thermal polymerization initiator, an organic peroxide that acts as an initiator by heat can be suitably used. In the case where the liquid crystal display panel 8 is used as the image display portion as in the present embodiment, a plastic material such as an acrylic resin is often used as the material of the panel, and its heat resistance is 80 ° C. Therefore, it is preferable to use an organic peroxide having a 10-hour half-life temperature of 100 ° C. or lower as the thermal polymerization initiator.

ここで有機過酸化物の半減期とは、有機過酸化物の濃度が初期値の半分に減少するまでの時間をいい、この半減期が１０時間となる温度を１０時間半減期温度という。   Here, the half-life of the organic peroxide refers to the time until the concentration of the organic peroxide is reduced to half of the initial value, and the temperature at which this half-life is 10 hours is referred to as the 10-hour half-life temperature.

１０時間半減期温度が１００℃以下の熱重合開始剤としては、例えば、日本油脂（株）社製商品名パーブチルＯ（Ｃ１２Ｈ２４Ｏ３）、日本油脂（株）社製商品名パーロイルＴＣＰ（Ｃ１２Ｈ２４Ｏ３）等が挙げられる。なお、パーブチル及びパーロイルという名称は、共に登録商標である。 Examples of the thermal polymerization initiator having a 10-hour half-life temperature of 100 ° C. or less include trade name Perbutyl O (C 12 H 24 O 3 ) manufactured by Nippon Oil & Fats Co., Ltd. and trade name Parroyl TCP manufactured by Nippon Oil & Fats Co., Ltd. (C 12 H 24 O 3), and the like. The names perbutyl and paroyl are registered trademarks.

熱重合開始剤の配合量は、適正な反応温度及び反応時間を確保する観点からは、上記硬化型樹脂組成物１１中のアクリル樹脂に対して１〜１０重量％とすることが好ましい。   The blending amount of the thermal polymerization initiator is preferably 1 to 10% by weight with respect to the acrylic resin in the curable resin composition 11 from the viewpoint of securing an appropriate reaction temperature and reaction time.

次に、図１（ｂ）に示すように、基部２のスペーサ９上に保護部３を配置し、保護部３の裏面を硬化型樹脂組成物１１に接触させ、基部２と保護部３との間の空隙に硬化型樹脂組成物１１を介在させる。   Next, as shown in FIG. 1B, the protective part 3 is disposed on the spacer 9 of the base part 2, the back surface of the protective part 3 is brought into contact with the curable resin composition 11, and the base part 2, the protective part 3, The curable resin composition 11 is interposed in the space between the two.

その後、図１（ｂ）に示すように、遮光部５の非形成領域に対応する画像表示領域にある硬化型樹脂組成物１１ｂに対し、透光性部材４を介して紫外線３４を照射する。   Thereafter, as shown in FIG. 1B, the curable resin composition 11 b in the image display area corresponding to the non-formation area of the light shielding part 5 is irradiated with ultraviolet rays 34 through the translucent member 4.

紫外線３４の照射方向は、特に限定されることはないが、画像表示領域にある硬化型樹脂組成物１１ｂのより均一な硬化を達成する観点からは、透光性部材４の表面に対して直交する方向とすることが好ましい。   The irradiation direction of the ultraviolet rays 34 is not particularly limited, but is orthogonal to the surface of the translucent member 4 from the viewpoint of achieving more uniform curing of the curable resin composition 11b in the image display region. It is preferable to make it the direction to do.

また、これと同時に、図１（ｂ）及び図２に示すように、例えば光ファイバー等からなる微細な照射部３０を有するＵＶ光照射装置３１を用い、遮光部５と基部２との間の硬化型樹脂組成物（即ち、遮光部５の形成領域にある硬化型樹脂組成物）１１ａに対し、遮光部５の貼り合わせ面５ａ（即ち、遮光部の形成面）の外方側面側から、スペーサ９同士の間において、フレーム６と遮光部５との間の空隙を通して紫外線３２を直接照射してもよい。   At the same time, as shown in FIGS. 1B and 2, a UV light irradiation device 31 having a fine irradiation unit 30 made of, for example, an optical fiber is used to cure between the light shielding unit 5 and the base 2. From the outer side surface side of the bonding surface 5a of the light shielding portion 5 (that is, the formation surface of the light shielding portion) to the mold resin composition (that is, the curable resin composition in the region where the light shielding portion 5 is formed) 11a The ultraviolet rays 32 may be directly radiated through the gap between the frame 6 and the light shielding portion 5 between the nine.

紫外線３２の照射方向は、特に限定されることはなく、水平方向に対して０°以上９０°未満とすることができるが、遮光部５の形成領域にある硬化型樹脂組成物１１ａのより均一な硬化を達成する観点からは、基部２のフレーム６の貼り合わせ面６ａと保護部３の遮光部５の貼り合わせ面５ａに対し、ほぼ平行に紫外線３２を照射することが好ましい。   The irradiation direction of the ultraviolet rays 32 is not particularly limited and can be set to 0 ° or more and less than 90 ° with respect to the horizontal direction, but is more uniform than the curable resin composition 11a in the formation region of the light shielding portion 5. From the viewpoint of achieving proper curing, it is preferable to irradiate the bonding surface 6a of the frame 6 of the base portion 2 and the bonding surface 5a of the light shielding portion 5 of the protection portion 3 with the ultraviolet rays 32 substantially in parallel.

また、紫外線３４の照射と併せて、図１（ｂ）及び図２に示すように、図示しないＵＶ光照射装置を用い、遮光部５と基部２との間の硬化型樹脂組成物１１ａに対し、遮光部５の貼り合わせ面５ａの内方側面側から、透光性部材４を通して紫外線３３を照射してもよい。   In addition to the irradiation with the ultraviolet ray 34, as shown in FIGS. 1B and 2, a UV light irradiation device (not shown) is used, and the curable resin composition 11 a between the light shielding portion 5 and the base portion 2 is applied. The ultraviolet ray 33 may be irradiated through the translucent member 4 from the inner side surface side of the bonding surface 5 a of the light shielding portion 5.

この場合、紫外線３３の照射方向は、遮光部５と基部２との間の硬化型樹脂組成物１１ａに対する紫外線３３の照射効率等を考慮すると、基部２のフレーム６の貼り合わせ面６ａ又は保護部３の遮光部５の貼り合わせ面５ａに対して斜め上方から１０°〜４５°の角度とすることが好ましい。   In this case, the irradiation direction of the ultraviolet ray 33 is determined by considering the irradiation efficiency of the ultraviolet ray 33 with respect to the curable resin composition 11a between the light-shielding part 5 and the base part 2 and the like. It is preferable that the angle is 10 ° to 45 ° obliquely from above with respect to the bonding surface 5 a of the three light shielding portions 5.

なお、以下に説明する、遮光部５の形成領域の硬化型樹脂組成物１１ａに対する加熱が十分であれば、紫外線３２、３３の照射は省略してもよい。   In addition, as long as the heating with respect to the curable resin composition 11a of the formation area of the light-shielding part 5 demonstrated below is enough, irradiation of the ultraviolet rays 32 and 33 may be abbreviate | omitted.

本実施形態では、画像表示領域の硬化型樹脂組成物１１ｂに対する紫外線３４の照射と同時に、あるいは紫外線３４照射の前又は後に、遮光部５の形成領域にある硬化型樹脂組成物１１ａを加熱する。   In this embodiment, the curable resin composition 11a in the formation region of the light-shielding portion 5 is heated simultaneously with the irradiation of the ultraviolet ray 34 on the curable resin composition 11b in the image display region, or before or after the irradiation with the ultraviolet ray 34.

この場合、加熱温度は、特に限定されることはないが、プラスチック材料部分の変形等を防止する観点からは、６０〜１００℃とすることが好ましい。加熱方法としては、紫外線照射後又は紫外線照射の際に、画像表示装置を加熱ステージに載置し、硬化型樹脂組成物１１ａ、１１ｂを全体的に加熱することも可能であり、また液晶表示パネル８の周囲の遮光部５の形成領域に加熱ヒータを配置することも可能である。   In this case, the heating temperature is not particularly limited, but is preferably 60 to 100 ° C. from the viewpoint of preventing deformation of the plastic material portion. As a heating method, it is possible to heat the curable resin compositions 11a and 11b as a whole by placing the image display device on a heating stage after ultraviolet irradiation or during ultraviolet irradiation, and a liquid crystal display panel. It is also possible to arrange a heater in the area where the light shielding portion 5 around the area 8 is formed.

こうして、紫外線３２、３３、３４の照射、及び加熱を行うことにより、図１（ｃ）に示すように、画像表示領域の硬化型樹脂組成物１１ｂと遮光部形成領域の硬化型樹脂組成物１１ａの双方とも硬化させて樹脂硬化物層１５とし、目的とする画像表示装置１を得る。   In this way, by performing irradiation with ultraviolet rays 32, 33, and 34 and heating, as shown in FIG. 1C, the curable resin composition 11b in the image display region and the curable resin composition 11a in the light shielding portion forming region. Both are cured to form a cured resin layer 15 to obtain the target image display device 1.

このような本実施形態によれば、保護部３と基部２との貼り合わせ工程において、光重合開始剤及び熱重合開始剤の双方を含有する硬化型樹脂組成物１１を用い、画像表示領域の硬化型樹脂組成物１１ｂに対して透過性部材４を通して紫外線３４を照射すると共に、遮光部５の形成領域にある硬化型樹脂組成物１１ａに対しては加熱を行い、必要に応じて遮光部５の貼り合わせ面５ａの内方及び外方側面側から紫外線３２、３３を照射するようにしたことから、画像表示領域の硬化型樹脂組成物１１ｂだけでなく、遮光部５の形成領域にある硬化型樹脂組成物１１ａも十分に硬化させることができる。   According to such this embodiment, in the bonding process of the protective part 3 and the base part 2, using the curable resin composition 11 containing both the photopolymerization initiator and the thermal polymerization initiator, The curable resin composition 11 b is irradiated with ultraviolet rays 34 through the transparent member 4, and the curable resin composition 11 a in the formation region of the light shielding part 5 is heated, and the light shielding part 5 as necessary. Since the ultraviolet rays 32 and 33 are irradiated from the inner side and the outer side surface of the bonding surface 5a, the curing in the formation region of the light shielding portion 5 as well as the curable resin composition 11b in the image display region. The mold resin composition 11a can also be sufficiently cured.

また、前述のように特定の硬化型樹脂組成物１１を使用することにより、液晶表示パネル８及び保護部３に対し、樹脂硬化収縮時の応力の影響を最小限に抑えることができるので、液晶表示パネル８及び保護部３において歪みがほとんど発生せず、その結果、液晶表示パネル８に変形が発生しないので、表示不良のない高輝度及び高コントラストな画像表示が可能になる。   In addition, by using the specific curable resin composition 11 as described above, it is possible to minimize the influence of stress at the time of resin curing shrinkage on the liquid crystal display panel 8 and the protective part 3. The display panel 8 and the protection unit 3 are hardly distorted. As a result, the liquid crystal display panel 8 is not deformed, so that it is possible to display an image with high luminance and high contrast without display defects.

さらに、この硬化型樹脂組成物１１を硬化させた硬化樹脂層１５により、衝撃に強く、また、画像表示部と保護部との間に空隙を設けていた従来例に比して薄型の画像表示装置１を得ることができる。   Furthermore, the cured resin layer 15 obtained by curing the curable resin composition 11 is resistant to impact and has a thinner image display than the conventional example in which a gap is provided between the image display unit and the protection unit. Device 1 can be obtained.

上述の実施形態においては、基部２上のスペーサ９の内側の領域に、光硬化も熱硬化も可能な硬化型樹脂組成物１１を所定量滴下したが、例えば、図３（ａ）に示すように、保護部３の遮光部５側の面に所定量滴下し、保護部３を裏返すようにして保護部３と基部２を貼り合わせてもよい。   In the above-described embodiment, a predetermined amount of the curable resin composition 11 that can be photocured and thermally cured is dropped on the inner region of the spacer 9 on the base 2. For example, as shown in FIG. Alternatively, a predetermined amount may be dropped on the surface of the protective part 3 on the light shielding part 5 side, and the protective part 3 and the base part 2 may be bonded together so that the protective part 3 is turned over.

この場合、硬化型樹脂組成物１１の光硬化や熱硬化は、図３（ｂ）及び（ｃ）に示すように、上述した実施形態と同様に行うことができる。   In this case, photocuring and thermosetting of the curable resin composition 11 can be performed in the same manner as in the embodiment described above, as shown in FIGS.

また、図４に示すように、スペーサ９を省略して画像表示装置１を製造してもよい。この場合には、基部２上に、上述の硬化型樹脂組成物１１を塗布し、その上に保護部３を重ね、前述と同様に光硬化と熱硬化を行う。   In addition, as shown in FIG. 4, the image display device 1 may be manufactured by omitting the spacer 9. In this case, the above-mentioned curable resin composition 11 is applied onto the base portion 2, the protective portion 3 is overlaid thereon, and photocuring and thermosetting are performed as described above.

図５（ａ）〜（ｃ）は、さらに異なる実施形態の要部を示す断面工程図である。以下、上記実施形態と対応する部分については、同一の符号を付しその詳細な説明を省略する。   FIGS. 5A to 5C are cross-sectional process diagrams showing the main parts of still another embodiment. Hereinafter, parts corresponding to those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図５（ａ）に示すように、本実施形態においても、上述した構成の基部２と保護部３とを用いる。   As shown in FIG. 5A, also in this embodiment, the base portion 2 and the protection portion 3 having the above-described configuration are used.

そして、本実施形態では、まず、基部２の液晶表示パネル８上に、光硬化型樹脂組成物１０を所定量滴下する。この光硬化型樹脂組成物１０としては、熱重合開始剤を配合しない以外は、前述の光硬化も熱硬化も可能な硬化型樹脂組成物１１と同様のものを使用する。   In the present embodiment, first, a predetermined amount of the photocurable resin composition 10 is dropped on the liquid crystal display panel 8 of the base 2. As this photocurable resin composition 10, the thing similar to the above-mentioned curable resin composition 11 which can be photocured and thermally cured is used except not mix | blending a thermal-polymerization initiator.

また、図５（ａ）に示すように、基部２上のスペーサ９の内側の領域で、保護部３の遮光部５に対向する領域（本実施形態では、フレーム６及び液晶表示パネル８の双方にわたる領域）に、前述の光硬化も熱硬化も可能な硬化型樹脂組成物１１を所定量滴下する。   Further, as shown in FIG. 5A, in the region inside the spacer 9 on the base portion 2, the region facing the light-shielding portion 5 of the protection portion 3 (in this embodiment, both the frame 6 and the liquid crystal display panel 8). A predetermined amount of the curable resin composition 11 that can be photocured and thermally cured.

そして、図５（ａ）に示すように、基部２のスペーサ９上に、保護部３をその裏面が画像表示領域にある光硬化型樹脂組成物１０ａと、遮光部形成領域にある硬化型樹脂組成物１１ａに接触するように配置する。   Then, as shown in FIG. 5 (a), on the spacer 9 of the base portion 2, the protective portion 3 has a photocurable resin composition 10a whose back surface is in the image display region, and a curable resin in the light shielding portion forming region. It arrange | positions so that the composition 11a may be contacted.

その後、図５（ｂ）に示すように、画像表示領域の光硬化型樹脂組成物１０ａに対しては、透光性部材４を通して紫外線３４を照射する。   Thereafter, as shown in FIG. 5B, the photocurable resin composition 10 a in the image display region is irradiated with ultraviolet rays 34 through the translucent member 4.

また、必要に応じて、紫外線３４の照射と同時に、図５（ｂ）に示すように、ＵＶ光照射装置３１を用い、遮光部５と基部２との間の硬化型樹脂組成物１１ａに対し、上述した条件の下で、遮光部５の貼り合わせ面５ａの外方側面側から、すなわち、スペーサ９同士の間において、フレーム６と遮光部５との間の空隙を通して紫外線３２を直接照射することもできる。   Further, if necessary, simultaneously with the irradiation of the ultraviolet ray 34, as shown in FIG. 5 (b), the UV light irradiation device 31 is used, and the curable resin composition 11a between the light shielding portion 5 and the base portion 2 is applied. Under the above-described conditions, the ultraviolet rays 32 are directly irradiated from the outer side surface side of the bonding surface 5a of the light shielding part 5, that is, between the spacers 9 through the gap between the frame 6 and the light shielding part 5. You can also.

図示しないＵＶ光照射装置を用い、遮光部５と基部２との間の硬化型樹脂組成物１１ａに対し、遮光部５の貼り合わせ面５ａの内方側面側から、透光性部材４を通して紫外線３３を照射することもできる。   Using a UV light irradiation device (not shown), ultraviolet light is passed through the translucent member 4 from the inner side surface of the bonding surface 5a of the light shielding part 5 to the curable resin composition 11a between the light shielding part 5 and the base part 2. 33 can also be irradiated.

これらの紫外線３２，３３の照射により、迅速及び確実に樹脂を硬化させることができる。   By irradiation with these ultraviolet rays 32 and 33, the resin can be cured quickly and reliably.

また、本実施形態においても、少なくとも遮光部５と基部２との間の硬化型樹脂組成物１１ａを加熱する。   Also in the present embodiment, at least the curable resin composition 11a between the light shielding part 5 and the base part 2 is heated.

そして、この紫外線３４の照射及び樹脂の加熱、あるいはさらに必要に応じて紫外線３３、３２の照射を行うことにより、図５（ｃ）に示すように、画像表示領域にある光硬化型樹脂組成物１０ａと遮光部形成領域にある硬化型樹脂組成物１１ａを硬化させて樹脂硬化物層１４、１５とし、目的とする画像表示装置１Ａを得る。   Then, by irradiating the ultraviolet ray 34 and heating the resin, or further irradiating the ultraviolet rays 33 and 32 as necessary, as shown in FIG. 5C, a photocurable resin composition in the image display region. 10a and the curable resin composition 11a in the light-shielding part forming region are cured to form the cured resin layers 14 and 15, and the target image display device 1A is obtained.

本実施形態によれば、前述の実施形態で説明した効果に加え、熱重合開始剤を含有する硬化型樹脂組成物１１を、基部２のフレーム６と遮光部５との間にのみ配置して硬化するようにしたことから、熱重合開始剤の使用量を減少させることができる。また、保護部３と基部２の間に介在させる硬化型樹脂組成物全体に熱重合開始剤を含有させ、加熱硬化させる場合に比して、相対的に加熱時間を短く、加熱温度を低くすることができ、画像表示装置を構成するプラスチック材料等に与える影響が小さいというメリットがある。その他、前述の実施形態と同様の効果を得ることができる。   According to this embodiment, in addition to the effects described in the above-described embodiments, the curable resin composition 11 containing a thermal polymerization initiator is disposed only between the frame 6 of the base portion 2 and the light shielding portion 5. Since it hardens | cures, the usage-amount of a thermal-polymerization initiator can be decreased. Moreover, compared with the case where a thermal polymerization initiator is contained in the entire curable resin composition interposed between the protective part 3 and the base part 2 and heat-cured, the heating time is relatively short and the heating temperature is lowered. Therefore, there is an advantage that the influence on the plastic material or the like constituting the image display apparatus is small. In addition, the same effects as those of the above-described embodiment can be obtained.

なお、本実施形態についても、図６に示すように、スペーサ９を省略して画像表示装置１Ａを製造してもよい。   Also in this embodiment, as shown in FIG. 6, the spacer 9 may be omitted to manufacture the image display device 1A.

この他、本発明は、上述した実施形態に限られず、種々の変更を行うことができる。例えば、画像表示領域にある硬化型樹脂組成物に対する紫外線照射と、遮光部形成領域にある硬化型樹脂組成物に対する紫外線照射は、同時に行ってもよいし、また別工程で行ってもよい。   In addition, the present invention is not limited to the above-described embodiment, and various changes can be made. For example, the ultraviolet irradiation with respect to the curable resin composition in the image display region and the ultraviolet irradiation with respect to the curable resin composition in the light shielding portion forming region may be performed simultaneously or in separate steps.

また、遮光部形成領域に硬化型樹脂組成物１１ａを配置するにあたり、フレーム６と遮光部５の貼り合わせ面６ａ、５ａの間の側部に部分的に空隙を設けるようにしてもよい。これにより、遮光部の形成面の外方側面側から紫外線３２を照射する際に、光を確実に樹脂組成物に到達させ、十分に硬化させることができる。   Further, when the curable resin composition 11a is arranged in the light shielding part forming region, a gap may be partially provided in a side part between the frame 6 and the bonding surfaces 6a and 5a of the light shielding part 5. Thereby, when irradiating the ultraviolet-ray 32 from the outer side surface side of the formation surface of a light-shielding part, light can be reliably reached to a resin composition and fully hardened.

さらにまた、本発明は、液晶表示装置のみならず、例えば、有機ＥＬ、プラズマディスプレイ装置等の種々のパネルディスプレイに適用することができる。   Furthermore, the present invention can be applied not only to a liquid crystal display device but also to various panel displays such as an organic EL and a plasma display device.

以下、実験例を挙げて本発明を具体的に説明するが、本発明は以下の実施例に限定されるものではない。   EXAMPLES Hereinafter, although an experiment example is given and this invention is demonstrated concretely, this invention is not limited to a following example.

次の樹脂組成物ａ〜ｈを調製した。   The following resin compositions a to h were prepared.

＜樹脂組成物ａ＞
ポリウレタンアクリレート（商品名ＵＶ-３０００Ｂ、日本合成化学工業（株）製）５０重量部、イソボルニルアクリレート（商品名ＩＢＸＡ、大阪有機化学工業（株）製）３０重量部、有機過酸化物（商品名パーブチルＯ、日本油脂（株）製）５重量部、光重合開始剤（商品名ＩＲＧＡＣＵＲＥ １８４、チバ・スペシャリティ・ケミカルズ社製）３重量部、光重合開始剤（商品名ＳｐｅｅｄＣｕｒｅＴＰＯ、日本シイベルヘグナー（株）製）１重量部を、混練機にて混練して樹脂組成物ａを調製した。 <Resin composition a>
50 parts by weight of polyurethane acrylate (trade name UV-3000B, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), 30 parts by weight of isobornyl acrylate (trade name IBXA, manufactured by Osaka Organic Chemical Industry Co., Ltd.), organic peroxide (product) Name perbutyl O, manufactured by Nippon Oil & Fats Co., Ltd. 5 parts by weight, photopolymerization initiator (trade name IRGACURE 184, manufactured by Ciba Specialty Chemicals), photopolymerization initiator (trade name SpeedCure TPO, Nippon Siber Hegner Co., Ltd.) 1) parts by weight were kneaded in a kneader to prepare a resin composition a.

＜樹脂組成物ｂ＞
有機過酸化物を添加せず、ポリウレタンアクリレート（商品名ＵＶ-３０００Ｂ、日本合成化学工業（株）製）５０重量部、イソボルニルアクリレート（商品名IＢＸＡ、大阪有機化学工業（株）製）３０重量部、光重合開始剤（商品名ＩＲＧＡＣＵＲＥ １８４、チバ・スペシャリティ・ケミカルズ社製）３重量部、光重合開始剤（商品名ＳｐｅｅｄＣｕｒｅＴＰＯ、日本シイベルヘグナー（株）製）１重量部を、混練機にて混練して樹脂組成物ｂを調製した。 <Resin composition b>
Without adding organic peroxide, polyurethane acrylate (trade name UV-3000B, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 50 parts by weight, isobornyl acrylate (trade name IBXA, manufactured by Osaka Organic Chemical Industry Co., Ltd.) 30 Part by weight, 3 parts by weight of a photopolymerization initiator (trade name IRGACURE 184, manufactured by Ciba Specialty Chemicals), 1 part by weight of a photopolymerization initiator (trade name: SpeedCure TPO, manufactured by Nippon Shibel Hegner Co., Ltd.) The resin composition b was prepared by kneading.

＜樹脂組成物ｃ＞
ポリイソプレン重合物の無水マレイン酸付加物と２−ヒドロキシエチルメタクリレートとのエステル化物７０重量部、ジシクロペンテニルオキシエチルメタクリレート３０重量部、２−ヒドロキシブチルメタクリレート１０重量部、テルペン系水素添加樹脂３０重量部、ブタジエン重合体１４０重量部、光重合開始剤４重量部、可視光領域用光重合開始剤０．５重量部を混練機にて混練して樹脂組成物ｃを調製した。 <Resin composition c>
70 parts by weight of esterified product of maleic anhydride adduct of polyisoprene polymer and 2-hydroxyethyl methacrylate, 30 parts by weight of dicyclopentenyloxyethyl methacrylate, 10 parts by weight of 2-hydroxybutyl methacrylate, 30 parts by weight of terpene-based hydrogenated resin The resin composition c was prepared by kneading 140 parts by weight of a butadiene polymer, 4 parts by weight of a photopolymerization initiator, and 0.5 parts by weight of a photopolymerization initiator for visible light region using a kneader.

＜樹脂組成物ｄ＞
ポリイソプレン重合物の無水マレイン酸付加物と２−ヒドロキシエチルメタクリレートとのエステル化物１００重量部、ジシクロペンテニルオキシエチルメタクリレート３０重量部、２−ヒドロキシブチルメタクリレート１０重量部、テルペン系水素添加樹脂３０重量部、ブタジエン重合体２１０重量部、光重合開始剤７重量部、可視光領域用光重合開始剤１．５重量部を混練機にて混練して樹脂組成物ｄを調製した。 <Resin composition d>
100 parts by weight of esterified product of maleic anhydride adduct of polyisoprene polymer and 2-hydroxyethyl methacrylate, 30 parts by weight of dicyclopentenyloxyethyl methacrylate, 10 parts by weight of 2-hydroxybutyl methacrylate, 30 parts by weight of terpene hydrogenated resin A resin composition d was prepared by kneading 210 parts by weight of a butadiene polymer, 7 parts by weight of a photopolymerization initiator, and 1.5 parts by weight of a photopolymerization initiator for visible light region using a kneader.

＜樹脂組成物ｅ＞
ポリイソプレン重合物の無水マレイン酸付加物と２−ヒドロキシエチルメタクリレートとのエステル化物（商品名ＵＣ−２０３、（株）クラレ製）７０重量部、ジシクロペンテニルオキシエチルメタクリレート（商品名ＦＡ５１２Ｍ、日立化成工業（株）製）３０重量部、２−ヒドロキシブチルメタクリレート（商品名ライトエステルＨＯＢ、共栄社化学（株）製）１０重量部、テルペン系水素添加樹脂（商品名クリアロンＰ−８５、ヤスハラケミカル（株）製）３０重量部、ブタジエン重合体（商品名Ｐｏｌｙｏｉｌ１１０、日本ゼオン（株）製）３５重量部、光重合開始剤（商品名イルガキュア１８４Ｄ、チバ・スペシャリティ・ケミカルズ社製）５重量部、光重合開始剤（商品名ＳｐｅｅｄＣｕｒｅ ＴＰＯ、日本シイベルヘグナー（株）製）２重量部を混練機にて混練して樹脂組成物ｅを調製した。 <Resin composition e>
70 parts by weight of an esterified product of maleic anhydride adduct of polyisoprene polymer and 2-hydroxyethyl methacrylate (trade name UC-203, manufactured by Kuraray Co., Ltd.), dicyclopentenyloxyethyl methacrylate (trade name FA512M, Hitachi Chemical) 30 parts by weight of Kogyo Co., Ltd., 10 parts by weight of 2-hydroxybutyl methacrylate (trade name Light Ester HOB, manufactured by Kyoeisha Chemical Co., Ltd.), terpene-based hydrogenated resin (trade name Clearon P-85, Yasuhara Chemical Co., Ltd.) 30 parts by weight, 35 parts by weight of a butadiene polymer (trade name Polyoil 110, manufactured by Nippon Zeon Co., Ltd.), 5 parts by weight of a photopolymerization initiator (trade name: Irgacure 184D, manufactured by Ciba Specialty Chemicals), start of photopolymerization Agent (trade name SpeedCure TPO, Nippon Siber Hegner (stock) 2) parts by weight were kneaded with a kneader to prepare a resin composition e.

＜樹脂組成物ｆ＞
ポリブタジエンアクリレート５０重量部、ヒドロキシルエチルメタクリレート２０重量部、光重合開始剤３重量部、可視光領域用光重合開始剤１重量部を混練機にて混練して樹脂組成物ｆを調製した。 <Resin composition f>
A resin composition f was prepared by kneading 50 parts by weight of polybutadiene acrylate, 20 parts by weight of hydroxylethyl methacrylate, 3 parts by weight of a photopolymerization initiator, and 1 part by weight of a photopolymerization initiator for visible light region in a kneader.

＜樹脂組成物ｇ＞
ポリウレタンアクリレート（商品名ＵＶ-３０００Ｂ、日本合成化学工業（株）製）５０重量部、トリシクロデカンジメタノールアクリレート（商品名ＮＫエステルＬＣ２、新中村化学工業（株）製）３０重量部、光重合開始剤（ＩＲＧＡＣＵＲＥ １８４、チバ・スペシャリティ・ケミカルズ社製）３重量部、光重合開始剤（商品名ＳｐｅｅｄＣｕｒｅＴＰＯ、日本シイベルヘグナー（株）製）１重量部を混練機にて混練して樹脂組成物ｇを調製した。 <Resin composition g>
50 parts by weight of polyurethane acrylate (trade name UV-3000B, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), 30 parts by weight of tricyclodecane dimethanol acrylate (trade name NK ester LC2, manufactured by Shin-Nakamura Chemical Co., Ltd.), photopolymerization A resin composition g was prepared by kneading 3 parts by weight of an initiator (IRGACURE 184, manufactured by Ciba Specialty Chemicals) and 1 part by weight of a photopolymerization initiator (trade name SpeedCure TPO, manufactured by Nippon Siebel Hegner) with a kneader. Prepared.

＜樹脂組成物ｈ＞
ポリブタジエンアクリレート（商品名ＴＥ-２０００、日本曹達（株）製）５０重量部、イソボルニルアクリレート（商品名IＢＸＡ、大阪有機化学工業（株）製）２０重量部、光重合開始剤（ＩＲＧＡＣＵＲＥ １８４、チバ・スペシャリティ・ケミカルズ社製）３重量部、光重合開始剤（商品名ＳｐｅｅｄＣｕｒｅＴＰＯ、日本シイベルヘグナー（株）製）１重量部を混練機にて混練して樹脂組成物ｈを調製した。 <Resin composition h>
50 parts by weight of polybutadiene acrylate (trade name TE-2000, manufactured by Nippon Soda Co., Ltd.), 20 parts by weight of isobornyl acrylate (trade name IBXA, manufactured by Osaka Organic Chemical Industry Co., Ltd.), photopolymerization initiator (IRGACURE 184, A resin composition h was prepared by kneading 3 parts by weight of Ciba Specialty Chemicals Co., Ltd. and 1 part by weight of a photopolymerization initiator (trade name SpeedCure TPO, manufactured by Nippon Siebel Hegner Co., Ltd.) with a kneader.

実験例１-1〔樹脂組成物の硬化率〕
樹脂組成物ａ及び樹脂組成物ｂを、それぞれ図１（ａ）に示すような液晶表示基板上のスペーサの内側領域に０.２ｇ滴下し、保護部として、幅２.０ｍｍの遮光部を有するアクリル板をスペーサ上に載置し、次いで、以下の硬化条件Ａ〜Ｄでそれぞれ樹脂組成物を光硬化させ、表１に示すように、液晶表示装置を作製した。 Experimental Example 1-1 [Curing Rate of Resin Composition]
The resin composition a and the resin composition b are dropped in an amount of 0.2 g on the inner region of the spacer on the liquid crystal display substrate as shown in FIG. 1A, respectively, and have a light shielding part with a width of 2.0 mm as a protective part. The acrylic plate was placed on the spacer, and then the resin composition was photocured under the following curing conditions A to D, respectively. As shown in Table 1, a liquid crystal display device was produced.

そして、得られた液晶表示装置のアクリル板を引き剥がし、各樹脂組成物ａ，ｂの硬化物の硬化率を後述するように測定した。結果を表１に示す。   And the acrylic board of the obtained liquid crystal display device was peeled off, and the cure rate of the hardened | cured material of each resin composition a and b was measured so that it might mention later. The results are shown in Table 1.

硬化条件Ａ：
上記アクリル板から１０ｃｍほど離れた箇所から、ＵＶランプ（ウシオ電機社製）を使って積算光量５，０００ｍＪの紫外線を照射し、樹脂組成物を光硬化させ、液晶表示装置を作成した。 Curing condition A:
A UV lamp (manufactured by Ushio Inc.) was used to irradiate ultraviolet rays with an integrated light amount of 5,000 mJ from a location about 10 cm away from the acrylic plate, and the resin composition was photocured to prepare a liquid crystal display device.

硬化条件Ｂ：
硬化条件Ａの照射条件に加え、フレームの周囲に加熱ヒータを配置して、８０℃で６０分間加熱した。 Curing condition B:
In addition to the irradiation conditions of curing condition A, a heater was placed around the frame and heated at 80 ° C. for 60 minutes.

硬化条件Ｃ：
硬化条件Ａの照射条件に加え、液晶表示装置の遮光部が形成されたフレームの周囲全体にわたって、３ｃｍほど離れたところから、光ファイバーを使って積算光量５,０００ｍＪの紫外線を照射した。 Curing condition C:
In addition to the irradiation condition of the curing condition A, ultraviolet rays having an accumulated light amount of 5,000 mJ were irradiated from an area about 3 cm away from the entire periphery of the frame on which the light shielding portion of the liquid crystal display device was formed, using an optical fiber.

硬化条件Ｄ：
硬化条件Ａの照射条件に加え、液晶表示装置を加熱ステージ上にのせ、８０℃で６０分間加熱するとともに、液晶表示装置の遮光部が形成されたフレームの周囲全体にわたって、３ｃｍほど離れたところから、光ファイバーを使って積算光量５,０００ｍＪの紫外線を照射した。 Curing condition D:
In addition to the irradiation condition of curing condition A, the liquid crystal display device is placed on a heating stage, heated at 80 ° C. for 60 minutes, and from a distance of about 3 cm over the entire periphery of the frame where the light-shielding portion of the liquid crystal display device is formed. Using an optical fiber, ultraviolet light with an integrated light amount of 5,000 mJ was irradiated.

硬化率の測定方法：
照射前の樹脂組成物と照射後の硬化物のそれぞれから、それらの硬化成分（モノマー、オリゴマー）を、樹脂組成物、硬化物が０．２ｗｔ％となる量のアセトニトリルを用いて抽出し、液体クロマトグラフィーで樹脂組成物における硬化成分のピーク強度Ｉ0 と、硬化物における硬化成分のピーク強度Ｉ1を求め、次式により硬化率を算出した。 Curing rate measurement method:
From each of the resin composition before irradiation and the cured product after irradiation, those cured components (monomer, oligomer) are extracted using acetonitrile in an amount that the resin composition and the cured product are 0.2 wt%, and liquid The peak intensity I 0 of the cured component in the resin composition and the peak intensity I 1 of the cured component in the cured product were obtained by chromatography, and the curing rate was calculated by the following formula.

Figure 2008281997
Figure 2008281997

実験例１-2
保護部として幅５.０ｍｍの遮光部を有するアクリル板を用いた以外は実験例１-１と同様にして、樹脂組成物ａ、ｂを使用し、硬化条件を変えて液晶表示装置を作製し、得られた液晶表示装置における樹脂硬化物の硬化率を測定した。結果を表２に示す。 Experimental example 1-2
Resin compositions a and b were used in the same manner as in Experimental Example 1-1 except that an acrylic plate having a light-shielding portion with a width of 5.0 mm was used as a protective portion, and a liquid crystal display device was produced by changing the curing conditions. The cure rate of the cured resin in the obtained liquid crystal display device was measured. The results are shown in Table 2.

Figure 2008281997
硬化条件Ａ：アクリル板側からの紫外線照射のみ
硬化条件Ｂ：アクリル板側からの紫外線照射と加熱ヒータによる加熱
硬化条件Ｃ：アクリル板側からの紫外線照射と側面側からの紫外線照射
硬化条件Ｄ：アクリル板からの紫外線照射と加熱ステージによる加熱と側面側からの紫外線照射
Figure 2008281997
 Curing condition A: Only ultraviolet irradiation from the acrylic plate side Curing condition B: Ultraviolet irradiation from the acrylic plate side and heat curing condition by a heater C: Ultraviolet irradiation from the acrylic plate side and ultraviolet irradiation curing condition from the side surface D: UV irradiation from acrylic plate, heating by heating stage and UV irradiation from side

Figure 2008281997
硬化条件Ａ〜Ｄ：表１の硬化条件と同一
Figure 2008281997
 Curing conditions A to D: the same as the curing conditions in Table 1

表１、表２から明らかなように、アクリル板側から紫外線照射のみを行った場合（硬化条件Ａ）には、光重合開始剤と熱重合開始剤の双方を含む樹脂組成物ａも、光重合開始剤は含むが熱重合開始剤を含まない樹脂組成物ｂも、その硬化率は、画像表示部の中央部については良好であったが、遮光部の幅に拘わらず、遮光部の直下においては硬化が十分でなかった。   As is clear from Tables 1 and 2, when only ultraviolet irradiation is performed from the acrylic plate side (curing condition A), the resin composition a containing both the photopolymerization initiator and the thermal polymerization initiator is also light The resin composition b including a polymerization initiator but not including a thermal polymerization initiator had a good curing rate in the central portion of the image display portion, but was directly below the light shielding portion regardless of the width of the light shielding portion. In this case, the curing was not sufficient.

また、アクリル板側及び側面側からの紫外線照射を行った場合（硬化条件Ｃ）には、遮光部の幅が狭い（２ｍｍ）ときは、画像表示部の中央部及び遮光部の直下の双方で良好な硬化性を示したが、遮光部の幅が広くなると（５ｍｍ）、遮光部の直下のは硬化率が低下した（７５％:表２樹脂組成物ｂの硬化条件Ｃ参照）。   In addition, when UV irradiation is performed from the acrylic plate side and the side surface side (curing condition C), when the width of the light shielding part is narrow (2 mm), both at the center of the image display part and immediately below the light shielding part. Although good curability was exhibited, when the width of the light-shielding portion was increased (5 mm), the curing rate was directly below the light-shielding portion (75%: see Table 2 Curing Conditions C of Resin Composition b).

一方、樹脂組成物ａを用い、紫外線の照射と加熱の双方を行った場合（硬化条件Ｂ、Ｄ）には、遮光部の幅に拘わらず、画像表示部の中央部及び遮光部の直下のいずれについても、樹脂組成物の硬化率が９５％まで向上し、非常に良好な結果が得られた。   On the other hand, when both ultraviolet irradiation and heating are performed using the resin composition a (curing conditions B and D), regardless of the width of the light shielding portion, the central portion of the image display portion and the portion immediately below the light shielding portion are used. In any case, the curing rate of the resin composition was improved to 95%, and very good results were obtained.

実験例２：樹脂硬化物の各種測定
樹脂組成物ａ〜ｇを、厚さ１００μｍの白色のガラス板上に、所定の膜厚となるように滴下してＵＶコンベアにて搬送し、所定の厚さの樹脂硬化物を得、これを試料とした。各試料について、「光透過率」、「貯蔵弾性率」、「硬化収縮率」、「表面粗度」を以下の通り測定した。 Experimental Example 2: Various measurements of cured resin The resin compositions a to g are dropped onto a white glass plate having a thickness of 100 μm so as to have a predetermined film thickness, and are conveyed by a UV conveyor to have a predetermined thickness. The cured resin product was obtained and used as a sample. About each sample, "light transmittance", "storage elastic modulus", "curing shrinkage rate", and "surface roughness" were measured as follows.

〔光透過率〕
各試料（樹脂硬化物の厚さ１００μｍ）について、紫外可視分光光度計（日本分光（株）製Ｖ−５６０）によって可視光領域の透過率を測定したところ、全て９０％以上であった。 (Light transmittance)
With respect to each sample (thickness of cured resin 100 μm), the transmittance in the visible light region was measured by an ultraviolet-visible spectrophotometer (V-560 manufactured by JASCO Corporation), and all were 90% or more.

〔貯蔵弾性率〕
各試料について、粘弾性測定装置（セイコーインスツルメンツ（株）製ＤＭＳ６１００
）を用い、測定周波数１Ｈｚで貯蔵弾性率(Ｐａ)(２５℃)を測定した。得られた結果を表３に示す。 [Storage modulus]
For each sample, a viscoelasticity measuring device (DMS6100 manufactured by Seiko Instruments Inc.)
The storage elastic modulus (Pa) (25 ° C.) was measured at a measurement frequency of 1 Hz. The obtained results are shown in Table 3.

〔硬化収縮率〕
硬化収縮率(％)については、硬化前の樹脂液と硬化後の固体の比重を電子比重計（ＭＩＲＡＧＥ社製ＳＤ−１２０Ｌ）を用いて測定し、両者の比重差から次式により算出した。得られた結果を表３に示す。 [Curing shrinkage]
For the curing shrinkage (%), the specific gravity of the resin liquid before curing and the solid after curing was measured using an electronic hydrometer (SD-120L manufactured by MIRAGE), and was calculated from the difference in specific gravity between the two by the following equation. The obtained results are shown in Table 3.

Figure 2008281997
Figure 2008281997

〔表面粗度〕
各樹脂組成物について、それぞれ２ｍｇを液晶セル用ガラス板に滴下し、ＵＶ硬化の際に生ずる内部応力により発生するガラス板表面の所定領域（２．９３ｍｍ×２．２０ｍｍ）の歪み（Ｒａ：平均表面粗度）を、Ｚｙｇｏ社製３次元非接触表面粗度測定計にて測定した。得られた結果を表３に示す。 [Surface roughness]
For each resin composition, 2 mg of each resin composition was dropped onto a glass plate for a liquid crystal cell, and a predetermined area (2.93 mm × 2.20 mm) strain (Ra: average) generated by internal stress generated during UV curing. Surface roughness) was measured with a three-dimensional non-contact surface roughness meter manufactured by Zygo. The obtained results are shown in Table 3.

Figure 2008281997
Figure 2008281997

表３から明らかなように、樹脂組成物ａ〜ｅでは貯蔵弾性率が４×１０3〜１×１０6Ｐａであり、硬化収縮率が１．０〜４．５％であり、そのため、平均表面粗度Ｒａ＝１．５〜５．５ｎｍで歪みがほとんどなく、良好な結果が得られた。これに対し、樹脂組成物ｆ（Ｒａ＝１２．４ｎｍ）、樹脂組成物ｇ（Ｒａ＝３６．５ｎｍ）、樹脂組成物ｈ（Ｒａ＝６４．２ｎｍ）は、Ｒａが大きく、樹脂が硬化する際の内部応力により、樹脂とガラス板との界面が歪んでいることが理解される。したがって、このような樹脂組成物を基部と保護部との間で充填硬化すると、画像表示部及び保護部の界面が歪むため、画像が歪む不具合の発生を解消することができない。 As is clear from Table 3, the resin compositions a to e have a storage elastic modulus of 4 × 10 3 to 1 × 10 6 Pa and a cure shrinkage of 1.0 to 4.5%, and therefore average The surface roughness Ra = 1.5 to 5.5 nm showed almost no distortion, and good results were obtained. In contrast, the resin composition f (Ra = 12.4 nm), the resin composition g (Ra = 36.5 nm), and the resin composition h (Ra = 64.2 nm) have a large Ra, and the resin is cured. It is understood that the interface between the resin and the glass plate is distorted due to the internal stress. Therefore, when such a resin composition is filled and cured between the base portion and the protective portion, the interface between the image display portion and the protective portion is distorted, so that the occurrence of a problem that the image is distorted cannot be eliminated.

本発明は液晶表示装置等の画像表示装置の製造に有用である。 The present invention is useful for manufacturing an image display device such as a liquid crystal display device.

本発明方法の一実施形態の要部を示す断面工程図である。It is sectional process drawing which shows the principal part of one Embodiment of this invention method. 同実施形態における画像表示装置の製造工程の要部を示す平面図である。It is a top view which shows the principal part of the manufacturing process of the image display apparatus in the embodiment. 同実施形態の変形態様の要部を示す断面工程図である。It is sectional process drawing which shows the principal part of the deformation | transformation aspect of the embodiment. 他の実施形態の要部を示す断面工程図である。It is sectional process drawing which shows the principal part of other embodiment. さらに異なる実施形態の要部を示す断面工程図である。Furthermore, it is sectional process drawing which shows the principal part of different embodiment. さらに異なる実施形態の要部を示す断面工程図である。Furthermore, it is sectional process drawing which shows the principal part of different embodiment. 従来技術に係る表示装置の要部を示す断面図である。It is sectional drawing which shows the principal part of the display apparatus which concerns on a prior art.

符号の説明Explanation of symbols

１…画像表示装置
１Ａ…画像表示装置
２…基部
３…保護部
４…透光性部材
５…遮光部
５ａ…遮光部の貼り合わせ面
６…フレーム
６ａ…フレームの貼り合わせ面
７…バックライト
８…液晶表示パネル（画像表示部）
９…スペーサ
１０…光硬化型樹脂組成物
１０ａ…画像表示領域にある光硬化型樹脂組成物
１１…光硬化も熱硬化も可能な硬化型樹脂組成物
１１ａ…遮光部形成領域にある硬化型樹脂組成物
１１ｂ…画像表示領域（遮光部の非形成領域）にある硬化型樹脂組成物
１４…樹脂硬化物層
１５…樹脂硬化物層
３０…照射部
３１…ＵＶ光照射装置
３２、３３、３４…紫外線 DESCRIPTION OF SYMBOLS 1 ... Image display apparatus 1A ... Image display apparatus 2 ... Base part 3 ... Protection part 4 ... Translucent member 5 ... Light-shielding part 5a ... Bonding surface of light-shielding part 6 ... Frame 6a ... Frame bonding surface 7 ... Backlight 8 ... Liquid crystal display panel (image display section)
DESCRIPTION OF SYMBOLS 9 ... Spacer 10 ... Photocurable resin composition 10a ... Photocurable resin composition in an image display area 11 ... Curable resin composition which can be photocured and thermally cured 11a ... Curable resin in a light-shielding part forming area Composition 11b: Curable resin composition in image display region (non-light-shielding region) 14 ... Resin cured product layer 15 ... Resin cured product layer 30 ... Irradiation unit 31 ... UV light irradiation device 32, 33, 34 ... UV

Claims (13)

画像表示部を有する基部と、遮光部を有する透光性の保護部との間に光硬化型樹脂組成物を介在させ、光硬化させて樹脂硬化物層を形成する工程を有する画像表示装置の製造方法であって、
光硬化型樹脂組成物として、硬化収縮率が５％以下、硬化物の２５℃における貯蔵弾性率が１.０×１０7Ｐａ以下、樹脂硬化物層の可視光領域の光透過率を９０％以上とする樹脂組成物を使用し、
少なくとも遮光部と基部との間に熱重合開始剤を含有する硬化型樹脂組成物を介在させ、該硬化型樹脂組成物を加熱する工程を有する画像表示装置の製造方法。 An image display apparatus comprising a step of interposing a photocurable resin composition between a base portion having an image display portion and a light-transmitting protective portion having a light-shielding portion and photocuring to form a cured resin layer. A manufacturing method comprising:
The photocurable resin composition has a cure shrinkage of 5% or less, a storage modulus of the cured product at 25 ° C. of 1.0 × 10 7 Pa or less, and a light transmittance in the visible light region of the resin cured product layer of 90%. Using the resin composition as described above,
A method for producing an image display device, comprising a step of heating a curable resin composition containing a thermal polymerization initiator between at least a light shielding part and a base part. 遮光部と基部との間に介在させる、熱重合開始剤を含有する硬化型樹脂組成物が、光硬化型樹脂組成物である請求項１記載の製造方法。   The production method according to claim 1, wherein the curable resin composition containing a thermal polymerization initiator interposed between the light shielding part and the base part is a photocurable resin composition. 保護部の非遮光部と基部との間に介在させる光硬化型樹脂組成物には熱重合開始剤を含有させず、遮光部と基部との間に介在させた、熱重合開始剤を含有する光硬化型樹脂組成物に対して光照射及び加熱を行う請求項２記載の製造方法。   The photocurable resin composition interposed between the non-light-shielding part and the base part of the protective part does not contain a thermal polymerization initiator, but contains a thermal polymerization initiator interposed between the light-shielding part and the base part. The manufacturing method of Claim 2 which performs light irradiation and a heating with respect to a photocurable resin composition. 遮光部と基部との間に介在させる硬化型樹脂組成物が、硬化収縮率が５％以下、硬化物の２５℃における貯蔵弾性率が１.０×１０7Ｐａ以下である請求項１〜３のいずれかに記載の製造方法。 The curable resin composition interposed between the light-shielding part and the base part has a curing shrinkage of 5% or less and a cured product having a storage elastic modulus at 25 ° C of 1.0 x 10 7 Pa or less. The manufacturing method in any one of. 光硬化型樹脂組成物の硬化物の２５℃における貯蔵弾性率が１×１０3〜１×１０6Ｐａである請求項１〜４のいずれかに記載の製造方法。 The storage elastic modulus in 25 degreeC of the hardened | cured material of a photocurable resin composition is 1 * 10 < 3 > -1 * 10 < 6 > Pa, The manufacturing method in any one of Claims 1-4. 光硬化型樹脂組成物の硬化収縮率が４．０％以下である請求項１〜５のいずれかに記載の製造方法。   The manufacturing shrinkage rate of a photocurable resin composition is 4.0% or less, The manufacturing method in any one of Claims 1-5. 樹脂硬化物層の厚みが５０〜２００μｍである請求項１〜６のいずれかに記載の製造方法。   The manufacturing method according to claim 1, wherein the cured resin layer has a thickness of 50 to 200 μm. 遮光部と基部との間に介在させる光硬化型樹脂組成物に対する光照射を、遮光部の形成面の外方側面側から行う請求項３記載の製造方法。   The manufacturing method of Claim 3 which performs light irradiation with respect to the photocurable resin composition interposed between a light-shielding part and a base from the outer side surface side of the formation surface of a light-shielding part. 光硬化型樹脂組成物が、ポリウレタンアクリレート、ポリイソプレン系アクリレート又はそのエステル化物、テルペン系水素添加樹脂及びブタジエン重合体から選ばれる１種以上のポリマーと、イソボルニルアクリレート、ジシクロペンテニルオキシエチルメタクリレート及び２−ヒドロキシブチルメタクリレートから選ばれる１種以上のアクリレート系モノマーと、光重合開始剤とを含有する請求項１〜７のいずれかに記載の製造方法。   A photocurable resin composition comprising at least one polymer selected from polyurethane acrylate, polyisoprene acrylate or esterified product thereof, terpene hydrogenated resin and butadiene polymer, isobornyl acrylate, dicyclopentenyloxyethyl methacrylate The manufacturing method in any one of Claims 1-7 containing 1 or more types of acrylate monomers chosen from 2-hydroxybutylmethacrylate, and a photoinitiator. 画像表示部が、液晶表示パネルである請求項１〜９のいずれかに記載の製造方法。   The manufacturing method according to claim 1, wherein the image display unit is a liquid crystal display panel. 保護部が、アクリル樹脂からなる請求項１〜１０のいずれかに記載の製造方法。   The manufacturing method according to claim 1, wherein the protective part is made of an acrylic resin. 保護部が、光学ガラスからなる請求項１〜１０のいずれかに記載の製造方法。   The manufacturing method according to claim 1, wherein the protective part is made of optical glass. 請求項１〜１２のいずれかに記載の製造方法により製造される画像表示装置。   An image display device manufactured by the manufacturing method according to claim 1.
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