JP2013148928A - Manufacturing method of display unit - Google Patents
Manufacturing method of display unit Download PDFInfo
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- JP2013148928A JP2013148928A JP2013089429A JP2013089429A JP2013148928A JP 2013148928 A JP2013148928 A JP 2013148928A JP 2013089429 A JP2013089429 A JP 2013089429A JP 2013089429 A JP2013089429 A JP 2013089429A JP 2013148928 A JP2013148928 A JP 2013148928A
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- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133311—Environmental protection, e.g. against dust or humidity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133331—Cover glasses
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/02—Materials and properties organic material
- G02F2202/022—Materials and properties organic material polymeric
- G02F2202/023—Materials and properties organic material polymeric curable
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/02—Materials and properties organic material
- G02F2202/022—Materials and properties organic material polymeric
- G02F2202/023—Materials and properties organic material polymeric curable
- G02F2202/025—Materials and properties organic material polymeric curable thermocurable
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
- Y10T156/1168—Gripping and pulling work apart during delaminating
- Y10T156/1179—Gripping and pulling work apart during delaminating with poking during delaminating [e.g., jabbing, etc.]
- Y10T156/1184—Piercing layer during delaminating [e.g., cutting, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
Abstract
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）等の表示装置に関し、特に、表示部上に透明な保護部を設けた表示装置の製造技術に関する。 The present invention relates to a display device such as a liquid crystal display device (LCD) used in, for example, a mobile phone, and more particularly to a technique for manufacturing a display device in which a transparent protective portion is provided on a display portion.
従来、この種の表示装置としては、例えば図７に示すようなものが知られている。この図７に示すように、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スからなる透明な保護部１０３が設けられている。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が設けられるようになっている。
Conventionally, as this type of display device, for example, the one shown in FIG. 7 is known. As shown in FIG. 7, in the liquid
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、光の散乱に起因するコントラストや輝度の低下、またパネルの薄型化の妨げとなっている。
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（例えば特許文献１参照）。
However, the presence of the
In view of such a problem, it has been proposed to fill a gap between the liquid crystal display panel and the protective portion with a resin (see, for example, Patent Document 1).
ところで、このような表示パネルと保護部の間に充填した樹脂内に異物や気泡の混入が確認された場合には、表示パネルと保護部とを引き剥がしてリペアを行う必要がある。
しかし、表示パネルと保護部とを引き剥がす際に、これら表示パネルと保護部に傷が付いたり割れたりする等のダメージを与えるおそれがある。
By the way, when it is confirmed that foreign substances or bubbles are mixed in the resin filled between the display panel and the protective part, it is necessary to perform a repair by peeling off the display panel and the protective part.
However, when the display panel and the protective part are peeled off, there is a risk that the display panel and the protective part may be damaged or cracked.
また、表示パネルと保護部に付着した樹脂硬化物を溶剤で完全に除去することは非常に困難である。
さらに、この種の樹脂硬化物に対して溶解性の高い溶剤は存在するが、安全性に難があり、しかも、当該溶剤そのものを完全に除去するためには、別の洗浄工程が必要になる。
Moreover, it is very difficult to completely remove the cured resin adhering to the display panel and the protective part with a solvent.
Furthermore, there are solvents that are highly soluble in this type of cured resin, but there are difficulties in safety, and a separate cleaning step is required to completely remove the solvent itself. .
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、樹脂硬化物による接合部分にダメージを与えることなく容易かつ確実にリペア作業を行いうる表示装置の製造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 display capable of performing repair work easily and reliably without damaging the joint portion caused by the cured resin. It is to provide a manufacturing technique of the device.
上記目的を達成するためなされた本発明は、画像を表示する表示部と、当該表示部上に配置された透光性の保護部とを有し、前記表示部と前記保護部との間に透光性の樹脂硬化物層が介在する表示装置の製造方法であって、以下の工程（ａ）〜（ｃ）の後に、当該表示装置の不具合に応じて、更に以下の工程（ｄ）〜（ｆ）を有する表示装置の製造方法である。
（ａ）前記表示部又は前記保護部の少なくとも一方に、前記樹脂硬化物の原料である樹脂組成物を塗布する工程。
（ｂ）前記表示部と前記保護部とを樹脂組成物を介して密着させる工程。
（ｃ）前記保護部の外方から紫外線を照射して前記樹脂組成物を硬化させることにより、前記表示部と前記保護部との間に前記樹脂硬化物層を介在させる工程。
（ｄ）前記保護部と前記表示部とが接合された前記樹脂硬化物層の側面側から当該樹脂硬化物層の厚さより径の小さいワイヤーを当接させて当該樹脂硬化物層内を移動させることにより、前記表示部と前記保護部とを分離する工程。
（ｅ）分離された前記表示部及び前記保護部上に付着している樹脂硬化物を、有機溶剤を含有する除去用溶液によって剥離除去する工程。
（ｆ）前記工程（ａ）〜（ｃ）を繰り返す工程。
本発明では、前記発明において、前記樹脂硬化物層の弾性率が、１．０×１０5Ｐａ未満である場合にも効果がある。
本発明では、前記発明において、前記有機溶剤は、硬化前の前記樹脂組成物と当該有機溶剤とを体積比で１：１で混合した場合に相溶するものから選択することもできる。
本発明では、前記発明において、前記除去用溶液が、有機溶剤としてリモネン又はトルエンを含有することもできる。
本発明では、前記発明において、前記除去用溶液が、有機溶剤として、リモネンに加えてエチルアルコール又はイソプロピルアルコールを含有することもできる。
本発明では、前記保護部が高分子材料からなる一方で、前記除去用溶液が有機溶剤としてリモネンを含有する場合も効果がある。
本発明では、前記発明において、前記表示装置が、前記表示部の表面に偏光板が設けられている液晶表示装置である場合も効果がある。
本発明では、前記工程（ｄ）において、前記ワイヤーを前記樹脂硬化物層に当接させてその状態で前記樹脂硬化物層内を移動させる場合にも効果がある。
The present invention made to achieve the above object has a display unit for displaying an image, and a translucent protective unit disposed on the display unit, and is provided between the display unit and the protective unit. A method for manufacturing a display device in which a light-transmitting cured resin layer is interposed, and after the following steps (a) to (c), the following steps (d) to (d) (F) is a manufacturing method of a display device.
(A) The process of apply | coating the resin composition which is the raw material of the said resin cured material to at least one of the said display part or the said protection part.
(B) The process of sticking the said display part and the said protective part through a resin composition.
(C) A step of interposing the cured resin layer between the display portion and the protective portion by irradiating ultraviolet rays from the outside of the protective portion to cure the resin composition.
(D) A wire having a diameter smaller than the thickness of the cured resin layer is brought into contact from the side surface side of the cured resin layer where the protective portion and the display portion are joined, and moved in the cured resin layer. The process which isolate | separates the said display part and the said protection part by doing.
(E) A step of peeling and removing the cured resin adhering to the separated display part and the protective part with a removing solution containing an organic solvent.
(F) A step of repeating the steps (a) to (c).
In this invention, in the said invention, it is effective also when the elasticity modulus of the said resin cured material layer is less than 1.0 * 10 < 5 > Pa.
In this invention, in the said invention, the said organic solvent can also be selected from what is compatible when the said resin composition before hardening and the said organic solvent are mixed by volume ratio 1: 1.
In this invention, in the said invention, the said solution for removal can also contain limonene or toluene as an organic solvent.
In this invention, in the said invention, the said solution for removal can also contain ethyl alcohol or isopropyl alcohol in addition to limonene as an organic solvent.
In the present invention, the protective part is made of a polymer material, but it is also effective when the removing solution contains limonene as an organic solvent.
The present invention is also effective when the display device is a liquid crystal display device in which a polarizing plate is provided on the surface of the display portion.
In this invention, in the said process (d), it is effective also when making the said wire contact | abut to the said resin cured material layer and moving the inside of the said resin cured material layer in the state.
本発明では、表示部と保護部とを樹脂硬化物層を介して接合させた後、不具合が発見された場合には、保護部と表示部とが接合された樹脂硬化物層の側面側から当該樹脂硬化物層の厚さより径の小さいワイヤーを当接させて当該樹脂硬化物層内を移動させることにより、表示部と保護部とを分離し、さらに、分離された表示部及び保護部上に付着している樹脂硬化物を、有機溶剤を含有する除去用溶液によって剥離除去することから、リペア作業の際に引き剥がすという手順を行わないので、表示部と保護部に傷が付いたり割れたりする等のダメージを与えることがない。
本発明において、樹脂硬化物層の弾性率が、１．０×１０5Ｐａ未満である場合には、より円滑迅速に樹脂硬化物層を切断して表示部と保護部とを分離することができる。
本発明において、有機溶剤として、硬化前の樹脂組成物と当該有機溶剤とを体積比で１：１で混合した場合に相溶するものから選択することにより（例えば、リモネン又はトルエン）、分離された表示部及び保護部上に付着している樹脂硬化物を溶解させて円滑かつ確実に剥離することができる。
しかも、本発明において、除去用溶液として、有機溶剤としてリモネン又はトルエンを含有するものを用いた場合には、表示部の表面に設けられた偏光板に対して変質を与えることがない。
本発明において、除去用溶液が、有機溶剤であるリモネンに加えてエチルアルコール又はイソプロピルアルコールを含有するものを用いれば、樹脂硬化物の剥離性を向上させることができるとともに、除去用溶液の揮発性が高くなるので、作業効率を向上させることができる。
そして、このような本発明によれば、特に、表示部の表面に偏光板が設けられている液晶表示装置において、リペア作業を容易かつ迅速に行うことができる。
In the present invention, after a display part and a protective part are joined via a resin cured product layer, when a defect is found, from the side surface side of the cured resin layer where the protective part and the display unit are joined. The display unit and the protection unit are separated by abutting a wire having a diameter smaller than the thickness of the resin cured product layer and moved in the resin cured product layer, and further, on the separated display unit and protection unit Since the resin cured product adhering to the surface is peeled and removed with a removing solution containing an organic solvent, the display part and the protective part are scratched or cracked because there is no procedure for peeling off during repair work. Damage.
In the present invention, when the elastic modulus of the cured resin layer is less than 1.0 × 10 5 Pa, the display cured portion and the protective portion can be separated more smoothly and quickly by cutting the cured resin layer. it can.
In the present invention, the organic solvent is separated by selecting it from those that are compatible when the resin composition before curing and the organic solvent are mixed at a volume ratio of 1: 1 (for example, limonene or toluene). The cured resin adhered on the display portion and the protective portion can be dissolved and peeled smoothly and reliably.
Moreover, in the present invention, when a solution containing limonene or toluene as the organic solvent is used as the removing solution, the polarizing plate provided on the surface of the display portion is not altered.
In the present invention, if the removal solution is one containing ethyl alcohol or isopropyl alcohol in addition to limonene, which is an organic solvent, the peelability of the cured resin can be improved and the volatility of the removal solution can be improved. Therefore, work efficiency can be improved.
And according to such this invention, especially in the liquid crystal display device by which the polarizing plate is provided in the surface of the display part, repair work can be performed easily and rapidly.
以上述べたように、本発明によれば、樹脂硬化物による接合部分にダメージを与えることなく容易かつ確実にリペア作業を行いうる表示装置の製造技術を提供することができる。 As described above, according to the present invention, it is possible to provide a manufacturing technique of a display device that can easily and reliably perform a repair operation without damaging a bonded portion by a cured resin.
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。
図１は、本発明に係る表示装置の製造方法の例を示す流れ図、図２（ａ）〜（ｃ）及び図３（ａ）〜（ｃ）は、同表示装置の製造方法を模式的に示す断面図である。
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a flowchart showing an example of a method for manufacturing a display device according to the present invention, and FIGS. 2A to 2C and 3A to 3C schematically show the method for manufacturing the display device. It is sectional drawing shown.
本実施の形態では、まず、図２（ａ）に示すように、例えば、表示部２の表面に、光硬化型樹脂組成物（以下適宜「樹脂組成物」「樹脂」などと称する。）を所定量滴下して、樹脂組成物層４を塗布形成する（ステップＳ１）。
本発明の場合、この樹脂組成物層４は、印刷法によって形成することも可能である。
In the present embodiment, first, as shown in FIG. 2A, for example, a photocurable resin composition (hereinafter referred to as “resin composition”, “resin”, or the like as appropriate) is provided on the surface of the
In the present invention, the
本明細書では、表示部２と保護部３との間の間隔を定めるためのスペーサは用いず、位置決め手段（図示せず）によって表示部２と保護部３との間隔を定める場合を例にとって説明するが、スペーサを用いる場合についても適用することができる。
In this specification, a spacer for determining the interval between the
なお、液晶表示装置の場合は、表示部２上に偏光板（図示せず）が設けられている。一方、保護部３としては、例えば、透光性を有するガラス板、アクリル樹脂（例えば、ＰＭＭＡ：ポリメチルメタクリレート）等の高分子材料（プラスチック）からなる基板を好適に用いることができる。
In the case of a liquid crystal display device, a polarizing plate (not shown) is provided on the
このような保護部３を水平に保持した状態で下降させ、図示しない位置決め昇降機構によって保護部３を所定の位置に固定して、図２（ｂ）に示すように、表示部２と保護部３との間の空隙に当該樹脂組成物層４を配置充填する。
The
本発明の場合、光硬化型樹脂組成物としては、硬化後において、透過率が９０％以上、２５℃における貯蔵弾性率が１．０×１０5Ｐａ以下、硬化収縮率が５％以下であるものを用いる。 In the case of the present invention, the photocurable resin composition has a transmittance of 90% or more, a storage elastic modulus at 25 ° C. of 1.0 × 10 5 Pa or less, and a curing shrinkage of 5% or less after curing. Use things.
また、本発明の場合、特に限定されることはないが、濡れ拡がり速度、はみ出しにくさ（表面張力）観点からは、粘度が１０００mPa・s〜５０００mPa・sのものを用いることが好ましく、より好ましくは、２０００mPa・s〜３０００mPa・sである。 In the case of the present invention, although not particularly limited, it is preferable to use a material having a viscosity of 1000 mPa · s to 5000 mPa · s, more preferably from the viewpoint of wetting and spreading speed and difficulty of protrusion (surface tension). Is 2000 mPa · s to 3000 mPa · s.
具体的には、例えば、ポリウレタンアクリレート、イソボルニルアクリレート等の光反応性アクリレート材料と、光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、本発明の目的の範囲で添加することが可能である。 Specifically, for example, a photoreactive acrylate material such as polyurethane acrylate or isobornyl acrylate and a photopolymerization initiator are used as main components, and other additives such as sensitizers, plasticizers, transparent particles, etc. It is possible to add within the range of the object of the invention.
ここで、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-ケトン（商品名IRGACURE(イルガキュア)184：チバ・スペシャリティ・ケミカルズ（株）製）等を好適に用いることができる。 Here, as the photopolymerization initiator, 1-hydroxy-cyclohexyl-phenyl-ketone (trade name IRGACURE (Irgacure) 184: manufactured by Ciba Specialty Chemicals Co., Ltd.) can be preferably used.
なお、保護部３は、表示部２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SpeedCure TPO：日本シイベルヘグナー（株）社製等）を用いることが好ましい。
The
本発明における樹脂組成物は、それをＵＶ照射により硬化させて得られる樹脂硬化物の貯蔵弾性率（２５℃）を１×１０5Ｐａ以下、好ましくは１×１０3〜１×１０5Ｐａ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である。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１×１０5Ｐａ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、本発明に係る樹脂組成物には含まれない。 The resin composition in the present invention has a storage elastic modulus (25 ° C.) of a cured resin obtained by curing it by UV irradiation of 1 × 10 5 Pa or less, preferably 1 × 10 3 to 1 × 10 5 Pa. The refractive index of the cured resin is preferably 1.45 or more and 1.55 or less, more preferably 1.51 or more and 1.52 or less, and the visible light region is transmitted when the thickness of the cured resin is 100 μm. The ratio was adjusted to 90% or more. Even if the main resin component constituting the resin composition is common, if the resin component or monomer component to be blended together is different, the storage elastic modulus (25 ° C.) of the cured resin obtained by curing the resin component is 1 × 10 5 Pa. However, a resin composition that becomes such a cured resin is not included in the resin composition according to the present invention.
また、この樹脂組成物は硬化収縮率が、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である。そのため、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を低減させることができ、樹脂硬化物層５と表示部２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。
Further, this resin composition is prepared so that the curing shrinkage rate is preferably 5.0% or less, more preferably 4.5% or less, particularly preferably 4.0% or less, and further preferably 0 to 2%. It is a thing. Therefore, the internal stress accumulated in the cured resin can be reduced when the resin composition is cured, and the interface between the cured
また、樹脂組成物を表示部２と保護部３との間に介在させ、その樹脂組成物を硬化させた場合に、樹脂硬化物層５と表示部２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ともに、視認性を向上させることができる。
In addition, when the resin composition is interposed between the
なお、この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、表示部と保護部との間に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が、本発明の樹脂組成物によれば、この平均表面粗度を６．０ｎｍ以下、好ましくは５．０ｎｍ、より好ましくは１〜３ｎｍにすることができる。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。 The degree of internal stress accumulated in the cured resin when this resin composition is cured depends on the average surface roughness of the cured resin obtained by dropping the resin composition on a flat plate and curing it. Can be evaluated. 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 the resin composition is interposed between the display part and the protective part and cured, the distortion generated at the interface between them can be ignored in practice, but according to the resin composition of the present invention, this average The surface roughness can be 6.0 nm or less, preferably 5.0 nm, more preferably 1 to 3 nm. 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.
その後、図２（ｃ）に示すように、樹脂組成物層４に対して、保護部３を介して紫外線ＵＶを照射することにより樹脂を硬化させる（ステップＳ３）。
本発明の場合、特に限定されることはないが、樹脂の均一な硬化をより達成する観点からは、表示部２の保護部３の表面に対して直交する方向に紫外線の照射を行うことが好ましい。
Then, as shown in FIG.2 (c), resin is hardened by irradiating the ultraviolet rays UV with respect to the
In the case of the present invention, although not particularly limited, from the viewpoint of achieving more uniform curing of the resin, ultraviolet irradiation may be performed in a direction orthogonal to the surface of the
また、これと同時に、例えば光ファイバー等を用い、表示部２と保護部３の間の樹脂組成物層４に対し、樹脂組成物層４の外方側面側から紫外線を直接照射してもよい。
その後、表示部２と保護部３の間に充填された樹脂硬化物層５内に異物や気泡の混入の有無を検査する（ステップＳ４）。
そして、ステップＳ５において、検査の結果が良好である場合には、当該工程を終了する。
At the same time, for example, an optical fiber may be used to directly irradiate the
Thereafter, the presence or absence of foreign matter or bubbles is inspected in the cured
In step S5, when the result of the inspection is good, the process is finished.
一方、ステップＳ５において、表示部２と保護部３の間の樹脂硬化物層５内に異物や気泡の混入されている等の不具合があると確認された場合には、リペアを行う。
この場合、本発明では、図３（ａ）（ｂ）に示すように、ワイヤ２０を用いて樹脂硬化物層５を切断することにより、表示部２と保護部３とを分離させる（ステップＳ６）。
On the other hand, when it is confirmed in step S5 that there is a problem such as foreign matter or bubbles mixed in the cured
In this case, in this invention, as shown to Fig.3 (a) (b), the
図４及び図５は、本発明における樹脂硬化物層の切断方法の例を示す説明図である。
図４に示す例では、一対のプーリ１０、１１に架け渡されたワイヤ２０を図中左右方向にスライドさせながら表示部２と保護部３間の樹脂硬化物層５をワイヤ２０に押し当て、その状態でパネル１をワイヤ２０と直交する方向に移動させることにより、樹脂硬化物層５を切断して表示部２と保護部３とを分離させる。
4 and 5 are explanatory views showing an example of a method for cutting the cured resin layer in the present invention.
In the example shown in FIG. 4, the resin cured
一方、図５に示す例の場合は、一対の滑車を構成するように配置した複数のプーリ１０〜１３間にワイヤ２０を架け渡し、さらに、プーリ１０、１１間のワイヤ２０のたるみを吸収する引っ張りばね１４、１５を、滑車として移動するプーリ１２、１３にそれぞれ連結するように構成したものである。
On the other hand, in the example shown in FIG. 5, the
この例では、表示部２と保護部３間の樹脂硬化物層５をワイヤ２０に押し当て、その状態でパネル１をワイヤ２０と直交する方向に移動させることにより、樹脂硬化物層５を切断して表示部２と保護部３とを分離させる。
この場合、プーリ１０、１１間のワイヤ２０のたるみは、引っ張りばね１４、１５の弾性力によって吸収され、プーリ１０、１１間のワイヤ２０は常時張られた状態になる。
In this example, the cured
In this case, the slack of the
本発明に用いるワイヤ２０としては、炭素鋼によって作られた金属線（例えばピアノ線）等を好適に用いることができる。
ここで、ワイヤ２０の太さは、表示部２と保護部３間の樹脂硬化物層５の厚さより細ければ特に限定されることはないが、切断性の観点からは、５０μｍ〜１００μｍのものを用いることが好ましい。
このようにして表示部２と保護部３とを分離した後は、表示部２と保護部３の表面に残っている樹脂硬化物を、有機溶剤を含有する除去用溶液によって払拭除去する（ステップＳ７）。
As the
Here, the thickness of the
After separating the
図６（ａ）〜（ｃ）は、樹脂硬化物に対する有機溶剤による払拭方法を模式的に示す説明図である。
図６（ａ）（ｂ）に示すように、表示部（例えばＬＣＤセル）又は保護部（例えば、プラスチック板、ガラス板）上の樹脂組成物に対して紫外線を照射して硬化させた場合を考える。
6A to 6C are explanatory views schematically showing a wiping method using an organic solvent for a resin cured product.
As shown in FIGS. 6A and 6B, the resin composition on the display unit (for example, LCD cell) or the protection unit (for example, plastic plate, glass plate) is cured by irradiating with ultraviolet rays. Think.
本発明では、図６（ｃ）に示すように、後述する有機溶剤を含有する除去用溶液を樹脂硬化物上に例えば滴下やスプレー法によって塗布し、例えば５分間程度室温で放置して樹脂硬化物を含浸膨潤させる。
さらに、樹脂硬化物上に塗布した除去用溶液の有機溶剤と同一の溶剤を含浸させたエラストマー等からなるワイプ部材を用い、樹脂硬化物を払拭する。
In the present invention, as shown in FIG. 6C, a removing solution containing an organic solvent, which will be described later, is applied onto the cured resin by, for example, dropping or spraying, and left at room temperature for about 5 minutes, for example. Impregnate and swell the product.
Further, the cured resin is wiped off using a wipe member made of an elastomer or the like impregnated with the same solvent as the organic solvent of the removing solution applied on the cured resin.
本発明の場合、除去用溶液に含有される有機溶剤としては、硬化する前の樹脂組成物と当該有機溶剤とを体積比で１：１で混合した場合に相溶するもの、すなわち、溶解パラメータ（ＳＰ値）が小さいものを好適に用いることができる。本発明では、特に当該溶解パラメータが９未満のものを好適に用いることができる。 In the case of the present invention, the organic solvent contained in the removal solution is compatible when the resin composition before curing and the organic solvent are mixed at a volume ratio of 1: 1, that is, the solubility parameter. Those having a small (SP value) can be suitably used. In the present invention, those having a solubility parameter of less than 9 can be preferably used.
このような有機溶剤を含有する除去用溶液によれば、表示部２と保護部３の表面に残っている樹脂硬化物を完全に除去することができる。
その一方で、液晶表示装置の場合には、例えば表示部２上に設けられる偏光板（トリアセチルセルロースからなる）に対して変質等のダメージを与えない有機溶剤を用いることが好ましい。
According to the removal solution containing such an organic solvent, the cured resin remaining on the surfaces of the
On the other hand, in the case of a liquid crystal display device, it is preferable to use, for example, an organic solvent that does not damage the polarizing plate (made of triacetyl cellulose) provided on the
本発明では、以上の要件を満たす有機溶剤として、例えば、リモネン（Ｃ6Ｈ10、溶解パラメータ：０．６）、トルエン（Ｃ7Ｈ8、溶解パラメータ：８．８）を用いることが好ましい。
なお、本発明の除去用溶液には、払拭性、揮発性を向上させる観点から、エチルアルコール、イソプロピルアルコールを添加することができる。
これらのうち、安全性を向上させる観点からは、有機溶剤としてリモネンを用いることが好ましい。
In the present invention, for example, limonene (C 6 H 10 , solubility parameter: 0.6) or toluene (C 7 H 8 , solubility parameter: 8.8) is preferably used as the organic solvent that satisfies the above requirements.
In addition, ethyl alcohol and isopropyl alcohol can be added to the removal solution of the present invention from the viewpoint of improving wiping properties and volatility.
Of these, limonene is preferably used as the organic solvent from the viewpoint of improving safety.
また、保護部２として高分子材料からなる基板（特にＰＭＭＡ基板）を用いている場合には、有機溶剤としてリモネンを用いると、基板表面に変質を起こさず樹脂硬化物を払拭できることから好ましい。
なお、有機溶剤がリモネンである場合には、エチルアルコール、イソプロピルアルコールを添加することにより、払拭性、揮発性を向上させることができる。
Further, when a substrate made of a polymer material (particularly a PMMA substrate) is used as the
When the organic solvent is limonene, the wiping property and volatility can be improved by adding ethyl alcohol or isopropyl alcohol.
以上の払拭工程後、表示部２と保護部３の払拭表面を例えば、顕微鏡による外観変化観察によって検査し（ステップＳ８）、樹脂硬化物の残渣がなく、表面に変質が生じていない場合には、ステップＳ１に戻り、上述した最初の工程を繰り返す（ステップＳ９）。
一方、ステップＳ９において、表示部２と保護部３の表面において、樹脂の残渣が残っていたり、表面変質が生じている場合には、例えば不良品として処理する。
After the above wiping process, the wiping surfaces of the
On the other hand, if resin residues remain on the surfaces of the
なお、本発明は、上記実施の形態の説明には限られず、種々の変更を行うことができる。
例えば、上述の実施の形態では、樹脂硬化物層５を切断する際にワイヤに対して表示装置側を移動させるようにしたが、本発明はこれに限られず、パネルに対してワイヤ側を移動させることも可能である。
さらにまた、本発明は、上述した液晶表示装置のみならず、例えば、有機ＥＬ装置等の種々のフラットパネルディスプレイに適用することができるものである。
The present invention is not limited to the description of the above embodiment, and various modifications can be made.
For example, in the above-described embodiment, the display device side is moved with respect to the wire when the cured
Furthermore, the present invention can be applied not only to the liquid crystal display device described above but also to various flat panel displays such as an organic EL device.
以下、実施例及び比較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 Example and a comparative example are given and this invention is demonstrated concretely, this invention is not limited to a following example.
〔塗工液の調製〕
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を調製した。
[Preparation of coating solution]
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 A resin composition 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.
＜本発明における樹脂硬化物の物性：参考例＞
〔透過率、弾性率〕
上述した配合で調製した樹脂組成物を、保護部用の厚さ１００μｍの白色のガラス板上に滴下して、紫外線照射装置内のＵＶコンベアにて搬送し樹脂を硬化させた（樹脂硬化物の厚さ１００μｍ）。
この樹脂硬化物について、紫外可視分光光度計（日本分光（株）製 Ｖ−５６０）によって透過率を測定したところ、９０％以上であった。
次に、この樹脂硬化物について、粘弾性測定装置（セイコーインスツルメンツ（株）製 ＤＭＳ６１００）を用いて弾性率（測定周波数１Ｈｚ、２５℃）を測定したところ、１．０×１０4Ｐａであった。
<Physical properties of cured resin in the present invention: Reference example>
[Transmissivity, elastic modulus]
The resin composition prepared by the above-described formulation was dropped on a white glass plate having a thickness of 100 μm for the protective part, and was transported by a UV conveyor in the ultraviolet irradiation device to cure the resin (resin cured product). Thickness 100 μm).
When the transmittance of this cured resin was measured with an ultraviolet-visible spectrophotometer (V-560 manufactured by JASCO Corporation), it was 90% or more.
Next, the cured resin was measured for elastic modulus (measuring frequency: 1 Hz, 25 ° C.) using a viscoelasticity measuring device (DMS6100 manufactured by Seiko Instruments Inc.), and it was 1.0 × 10 4 Pa. .
〔硬化収縮率〕
さらに、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、両者の比重差に基づき以下の式より算出したところ、１．８％であった。
硬化収縮率（％）＝（硬化物比重−樹脂液比重）／硬化物比重 ×１００
〔表面粗度の測定〕
上述した樹脂組成物２ｍｇをＬＣＤセル用ガラス板に滴下し、紫外線照射による硬化反応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（３次元非接触表面粗度測定計）にて測定したところ、２．７ｎｍであった。
[Curing shrinkage]
Further, the curing shrinkage ratio was calculated from the following formula based on the specific gravity difference between the resin liquid before curing and the solid density after curing using an electronic hydrometer (SD-120L manufactured by MIRAGE). However, it was 1.8%.
Curing shrinkage (%) = (cured product specific gravity−resin liquid specific gravity) / cured product specific gravity × 100
(Measurement of surface roughness)
2 mg of the resin composition described above is dropped on the glass plate for LCD cells, and a distortion (Ra :) of a predetermined region (2.93 mm × 2.20 mm) on the surface of the glass plate generated by internal stress generated during the curing reaction by ultraviolet irradiation. The average surface roughness) was 2.7 nm as measured by Zygo (3-dimensional non-contact surface roughness meter).
本例の場合、樹脂硬化物は、弾性率が１×１０4Ｐａであり、また、硬化収縮率は、１．８％であり、そのため、平均表面粗度Ｒａ＝２．７ｎｍで歪みがほとんどない良好な結果が得られた。したがって、このような樹脂硬化物を表示部と保護部との間に配置充填させることにより、歪みのない表示装置を得ることができる。 In this example, the cured resin has an elastic modulus of 1 × 10 4 Pa and a curing shrinkage of 1.8%. Therefore, the average surface roughness Ra = 2.7 nm and almost no distortion. No good results were obtained. Therefore, a display device without distortion can be obtained by arranging and filling such a cured resin between the display portion and the protection portion.
＜実施例及び比較例＞
上記図６（ａ）に示すように、上述した樹脂組成物を、上記保護部用ガラス板又はＬＣＤセル用ガラス板上に塗布し、図６（ｂ）に示すように、この樹脂組成物に対して紫外線を照射して硬化させた。
そして、図６（ｃ）に示すように、有機溶剤として、リモネン、トルエン又はＭＥＫを樹脂硬化物上に塗布し、５分間室温で放置した。
<Examples and Comparative Examples>
As shown in FIG. 6 (a), the above-mentioned resin composition is applied on the glass plate for protective part or the glass plate for LCD cell, and as shown in FIG. 6 (b), the resin composition is applied to the resin composition. On the other hand, it was cured by irradiating with ultraviolet rays.
And as shown in FIG.6 (c), limonene, toluene, or MEK was apply | coated on the resin cured material as an organic solvent, and it was left to stand at room temperature for 5 minutes.
さらに、樹脂硬化物上に塗布した有機溶剤と同一の溶剤を含浸させたワイプを用い、樹脂硬化物を払拭した。
その後、各サンプルの払拭性を顕微鏡による外観変化観察によって確認した。その結果を表１に示す。
ここでは、外観上問題なく払拭ができたものを○、外観上問題が生じたものを×とした。
Furthermore, the cured resin was wiped off using a wipe impregnated with the same solvent as the organic solvent applied on the cured resin.
Thereafter, the wiping property of each sample was confirmed by observation of appearance change with a microscope. The results are shown in Table 1.
Here, the case where wiping was performed without any problem in appearance was indicated as “◯”, and the case where an appearance problem occurred was indicated as “X”.
表１から明らかなように、有機溶剤として、リモネン、トルエンを用いた場合には、外観上問題なく払拭を行うことができた。
一方、有機溶剤として、ＭＥＫを用いた場合には、払拭を完全に行うことができず、しかもＬＣＤセル用ガラス板上の偏光板に変質が見られた。
As can be seen from Table 1, when limonene and toluene were used as the organic solvent, wiping could be performed without problems in appearance.
On the other hand, when MEK was used as the organic solvent, wiping could not be performed completely, and alteration was observed in the polarizing plate on the glass plate for LCD cells.
＜実施例における払拭工程後の樹脂硬化物の物性＞
〔樹脂硬化物払拭後の透過率、弾性率、硬化収縮率〕
払拭工程が終了した保護部用ガラス板上に、上記参考例と同一の条件で樹脂組成物を滴下して、同一の条件で硬化させた。
この樹脂硬化物について、上記参考例と同一の条件で透過率を測定したところ、上記参考例の場合と同等の結果（誤差範囲内）が得られた。
<Physical properties of cured resin after wiping process in Examples>
[Transmissivity, elastic modulus, cure shrinkage after wiping resin cured product]
On the glass plate for protection parts which the wiping process was complete | finished, the resin composition was dripped on the conditions same as the said reference example, and it was made to harden | cure on the same conditions.
When the transmittance of this cured resin was measured under the same conditions as in the above Reference Example, the same result (within the error range) as in the above Reference Example was obtained.
次に、この樹脂硬化物について、上記参考例と同一の条件で弾性率を測定したところ、上記参考例の場合と同等の結果（誤差範囲内）が得られた。
さらに、上記参考例と同一の条件で硬化収縮率を測定・算出したところ、上記参考例の場合と同等の結果（誤差範囲内）が得られた。
Next, when the elastic modulus of this cured resin was measured under the same conditions as in the above Reference Example, the same result (within the error range) as in the above Reference Example was obtained.
Furthermore, when the curing shrinkage was measured and calculated under the same conditions as in the above reference example, the same result (within the error range) as in the above reference example was obtained.
〔樹脂硬化物払拭後の表面粗度の測定〕
一方、払拭工程が終了したＬＣＤセル用ガラス板に上記参考例と同一の条件で樹脂組成物を滴下し、上記参考例と同一の条件で表面の歪みを測定したところ、平均表面粗度Ｒａが上記参考例の場合と同等の結果（誤差範囲内）となった。
以上のように、本実施例においては、リペアの前後において、透過率、弾性率、硬化収縮率、平均表面粗度が、いずれも変わらない結果が得られた。
[Measurement of surface roughness after wiping the cured resin]
On the other hand, when the resin composition was dropped onto the glass plate for an LCD cell after the wiping process was completed under the same conditions as in the above reference example, and the surface distortion was measured under the same conditions as in the above reference example, the average surface roughness Ra was The result was the same as that in the above reference example (within the error range).
As described above, in this example, the results were obtained in which the transmittance, elastic modulus, curing shrinkage rate, and average surface roughness were all unchanged before and after repair.
これらの結果から、本発明によれば、樹脂硬化物による接合部分にダメージを与えることなく容易かつ確実にリペア作業を行うことができ、これにより歪みのない表示装置を歩留まり良く得ることができることが理解される。 From these results, according to the present invention, it is possible to easily and surely perform the repair work without damaging the bonded portion by the resin cured product, and thereby it is possible to obtain a display device without distortion with a high yield. Understood.
＜参考実施例＞
〔塗工液の調製〕
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参考実施例の樹脂組成物を調製した。
<Reference Example>
[Preparation of coating solution]
A resin composition of a reference example 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. .
〔透過率、弾性率、硬化収縮率〕
上述した配合で調製した樹脂組成物を、上述した保護部用のガラス板上に滴下して、同一の条件で硬化させた。
この樹脂硬化物について、上記実施例と同一の条件で透過率を測定したところ、９０％以上であった。
次に、この樹脂硬化物について、上記実施例と同一の条件で弾性率を測定したところ、２．０×１０7Ｐａであった。
さらに、上記実施例と同一の条件で硬化収縮率を測定・算出したところ、５．６％であった。
[Transmissivity, elastic modulus, cure shrinkage]
The resin composition prepared by the above-described blending was dropped on the above-described protective part glass plate and cured under the same conditions.
With respect to this cured resin, the transmittance was measured under the same conditions as in the above example, and it was 90% or more.
Next, when the elastic modulus of this cured resin was measured under the same conditions as in the above example, it was 2.0 × 10 7 Pa.
Furthermore, the cure shrinkage percentage was measured and calculated under the same conditions as in the above example, and it was 5.6%.
〔表面粗度の測定〕
ＬＣＤセル用ガラス板に上記実施例と同一の条件で上記樹脂組成物を滴下し、上記実施例と同一の条件で表面の歪みを測定したところ、１２．４ｎｍであった。
本例の場合、樹脂硬化物は、弾性率が２×１０7Ｐａであり、また、硬化収縮率は、５．６％であり、そのため、平均表面粗度Ｒａ＝１２．４ｎｍで歪みが上記実施例に比べて大きくなった。
一方、上述した樹脂組成物を、上記保護部用ガラス板又はＬＣＤセル用ガラス板上に塗布し、この樹脂組成物に対して紫外線を照射して硬化させた。
(Measurement of surface roughness)
The resin composition was dropped onto the glass plate for LCD cell under the same conditions as in the above example, and the surface distortion was measured under the same condition as in the above example. As a result, it was 12.4 nm.
In this example, the cured resin has an elastic modulus of 2 × 10 7 Pa and a curing shrinkage of 5.6%. Therefore, the average surface roughness Ra = 12.4 nm and the strain is the above. It became large compared with the Example.
On the other hand, the resin composition described above was applied on the glass plate for protective part or the glass plate for LCD cell, and the resin composition was cured by irradiating with ultraviolet rays.
そして、有機溶剤として、リモネン又はトルエンを樹脂硬化物上に塗布し、５分間室温で放置した。
さらに、樹脂硬化物上に塗布した有機溶剤と同一の溶剤を含浸させたワイプを用い、樹脂硬化物を払拭した。
その後、各サンプルの払拭性を顕微鏡による外観変化観察によって確認したところ、払拭を完全に行うことができず、外観上問題が生じた。ただし、実用可能なレベルではあった。
以上の結果から、本発明では、樹脂硬化物の弾性率は、１×１０5Ｐａを超えないことがより好ましいことが確認された。
Then, as an organic solvent, limonene or toluene was applied on the cured resin and allowed to stand at room temperature for 5 minutes.
Furthermore, the cured resin was wiped off using a wipe impregnated with the same solvent as the organic solvent applied on the cured resin.
Thereafter, when the wiping property of each sample was confirmed by observation of the appearance change with a microscope, wiping could not be performed completely, resulting in problems in appearance. However, it was a practical level.
From the above results, it was confirmed in the present invention that the elastic modulus of the cured resin product is more preferably not more than 1 × 10 5 Pa.
２…表示部 ３…保護部 ５…樹脂硬化物層
2 ...
上記目的を達成するためなされた本発明は、画像を表示する表示部と、当該表示部上に配置された透光性の保護部とを有し、前記表示部と前記保護部との間に透光性の樹脂硬化物層が介在する表示装置の製造方法であって、以下の工程（ａ）〜（ｃ）の後に、当該表示装置の不具合に応じて、更に以下の工程（ｄ）〜（ｆ）を有する表示装置の製造方法である。
（ａ）前記表示部又は前記保護部の少なくとも一方に、前記樹脂硬化物層の原料である樹脂組成物を塗布する工程。
（ｂ）前記表示部と前記保護部とを樹脂組成物を介して密着させる工程。
（ｃ）前記保護部の外方から紫外線を照射して前記樹脂組成物を硬化させることにより、前記表示部と前記保護部との間に前記樹脂硬化物層を介在させる工程。
（ｄ）前記保護部と前記表示部とが接合された前記樹脂硬化物層の側面側から当該樹脂硬化物層の厚さより径が小さく且つ一対のプーリの間に架け渡されたワイヤーを当接させて当該樹脂硬化物層内を移動させることにより、前記表示部と前記保護部とを分離する工程。
（ｅ）分離された前記表示部及び前記保護部上に付着している樹脂硬化物を、有機溶剤を含有する除去用溶液によって剥離除去する工程。
（ｆ）前記工程（ａ）〜（ｃ）を繰り返す工程。
本発明では、前記工程（ｄ）において、前記ワイヤーを弛んだ状態で前記樹脂硬化物層内を移動させる場合にも効果がある。
本発明は、画像を表示する表示部と、当該表示部上に配置された透光性の保護部とを有し、前記表示部と前記保護部との間に透光性の樹脂硬化物層が介在する表示装置の製造方法であって、以下の工程（ａ）〜（ｃ）の後に、当該表示装置の不具合に応じて、更に以下の工程（ｄ）〜（ｆ）を有する表示装置の製造方法である。
（ａ）前記表示部又は前記保護部の少なくとも一方に、前記樹脂硬化物の原料である樹脂組成物を塗布する工程。
（ｂ）前記表示部と前記保護部とを樹脂組成物を介して密着させる工程。
（ｃ）前記保護部の外方から紫外線を照射して前記樹脂組成物を硬化させることにより、前記表示部と前記保護部との間に前記樹脂硬化物層を介在させる工程。
（ｄ）前記保護部と前記表示部とが接合された前記樹脂硬化物層の側面側から当該樹脂硬化物層の厚さより径が小さく且つ一対の滑車を構成するように配置した複数のプーリの間に架け渡されたワイヤーを当接させて当該樹脂硬化物層内を移動させることにより、前記表示部と前記保護部とを分離する工程であって、前記プーリは、当該樹脂硬化物層を移動するワイヤーのたわみを吸収する引っ張りばねに連結されている。
（ｅ）分離された前記表示部及び前記保護部上に付着している樹脂硬化物を、有機溶剤を含有する除去用溶液によって剥離除去する工程。
（ｆ）前記工程（ａ）〜（ｃ）を繰り返す工程。
The present invention made to achieve the above object has a display unit for displaying an image, and a translucent protective unit disposed on the display unit, and is provided between the display unit and the protective unit. A method for manufacturing a display device in which a light-transmitting cured resin layer is interposed, and after the following steps (a) to (c), the following steps (d) to (d) (F) is a manufacturing method of a display device.
(A) The process of apply | coating the resin composition which is the raw material of the said resin cured material layer to at least one of the said display part or the said protection part.
(B) The process of sticking the said display part and the said protective part through a resin composition.
(C) A step of interposing the cured resin layer between the display portion and the protective portion by irradiating ultraviolet rays from the outside of the protective portion to cure the resin composition.
(D) a bridged the wire between the protective part and the display part and the side and from the pair of diameter than the thickness of the cured resin layer is rather small pulley of the cured resin layer joined those The process which isolate | separates the said display part and the said protection part by making it contact and moving in the said resin cured material layer.
(E) A step of peeling and removing the cured resin adhering to the separated display part and the protective part with a removing solution containing an organic solvent.
(F) A step of repeating the steps (a) to (c).
In this invention, in the said process (d), it is effective also when moving the inside of the said resin cured material layer in the state which slackened the said wire .
The present invention includes a display unit that displays an image and a translucent protective unit disposed on the display unit, and a translucent resin cured material layer between the display unit and the protective unit. Of the display device further comprising the following steps (d) to (f) after the following steps (a) to (c) in accordance with a defect of the display device. It is a manufacturing method.
(A) The process of apply | coating the resin composition which is the raw material of the said resin cured material to at least one of the said display part or the said protection part.
(B) The process of sticking the said display part and the said protective part through a resin composition.
(C) A step of interposing the cured resin layer between the display portion and the protective portion by irradiating ultraviolet rays from the outside of the protective portion to cure the resin composition.
(D) a plurality of pulleys arranged so as to form a pair of pulleys having a diameter smaller than a thickness of the cured resin layer from the side surface side of the cured resin layer to which the protection unit and the display unit are joined; A step of separating the display unit and the protection unit by bringing the wire stretched between them into contact with each other and moving the cured product layer, wherein the pulley is configured to remove the cured resin layer. It is connected to a tension spring that absorbs the deflection of the moving wire.
(E) A step of peeling and removing the cured resin adhering to the separated display part and the protective part with a removing solution containing an organic solvent.
(F) A step of repeating the steps (a) to (c).
本発明では、表示部と保護部とを樹脂硬化物層を介して接合させた後、不具合が発見された場合には、保護部と表示部とが接合された樹脂硬化物層の側面側から当該樹脂硬化物層の厚さより径の小さいワイヤーを当接させて当該樹脂硬化物層内を移動させることにより、表示部と保護部とを分離し、さらに、分離された表示部及び保護部上に付着している樹脂硬化物を、有機溶剤を含有する除去用溶液によって剥離除去することから、リペア作業の際に引き剥がすという手順を行わないので、表示部と保護部に傷が付いたり割れたりする等のダメージを与えることがない。
そして、このような本発明によれば、特に、表示部の表面に偏光板が設けられている液晶表示装置において、リペア作業を容易かつ迅速に行うことができる。
In the present invention, after a display part and a protective part are joined via a resin cured product layer, when a defect is found, from the side surface side of the cured resin layer where the protective part and the display unit are joined. The display unit and the protection unit are separated by abutting a wire having a diameter smaller than the thickness of the resin cured product layer and moved in the resin cured product layer, and further, on the separated display unit and protection unit Since the resin cured product adhering to the surface is peeled and removed with a removing solution containing an organic solvent, the display part and the protective part are scratched or cracked because there is no procedure for peeling off during repair work. Damage .
Their, according to the present invention, in particular, in a liquid crystal display device in which the polarizing plate is provided on the surface of the display unit, it is possible to perform a repair work easily and quickly.
Claims (8)
以下の工程（ａ）〜（ｃ）の後に、当該表示装置の不具合に応じて、更に以下の工程（ｄ）〜（ｆ）を有する表示装置の製造方法。
（ａ）前記表示部又は前記保護部の少なくとも一方に、前記樹脂硬化物の原料である樹脂組成物を塗布する工程。
（ｂ）前記表示部と前記保護部とを樹脂組成物を介して密着させる工程。
（ｃ）前記保護部の外方から紫外線を照射して前記樹脂組成物を硬化させることにより、前記表示部と前記保護部との間に前記樹脂硬化物層を介在させる工程。
（ｄ）前記保護部と前記表示部とが接合された前記樹脂硬化物層の側面側から当該樹脂硬化物層の厚さより径の小さいワイヤーを当接させて当該樹脂硬化物層内を移動させることにより、前記表示部と前記保護部とを分離する工程。
（ｅ）分離された前記表示部及び前記保護部上に付着している樹脂硬化物を、有機溶剤を含有する除去用溶液によって剥離除去する工程。
（ｆ）前記工程（ａ）〜（ｃ）を繰り返す工程。 A display having a display unit for displaying an image and a translucent protective unit disposed on the display unit, and a translucent resin cured material layer interposed between the display unit and the protective unit A device manufacturing method comprising:
After the following steps (a) to (c), a method for manufacturing a display device further comprising the following steps (d) to (f) according to a defect of the display device.
(A) The process of apply | coating the resin composition which is the raw material of the said resin cured material to at least one of the said display part or the said protection part.
(B) The process of sticking the said display part and the said protective part through a resin composition.
(C) A step of interposing the cured resin layer between the display portion and the protective portion by irradiating ultraviolet rays from the outside of the protective portion to cure the resin composition.
(D) A wire having a diameter smaller than the thickness of the cured resin layer is brought into contact from the side surface side of the cured resin layer where the protective portion and the display portion are joined, and moved in the cured resin layer. The process which isolate | separates the said display part and the said protection part by doing.
(E) A step of peeling and removing the cured resin adhering to the separated display part and the protective part with a removing solution containing an organic solvent.
(F) A step of repeating the steps (a) to (c).
The method of manufacturing a display device according to claim 1, wherein in the step (d), the wire is brought into contact with the cured resin layer and moved in the cured resin layer in that state.
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| US9946104B2 (en) | 2015-12-28 | 2018-04-17 | Japan Display Inc. | Display device and method of manufacturing the same |
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| JP5894557B2 (en) | 2016-03-30 |
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