JPH01254786A - Adhesive for sealing liquid crystal element and liquid crystal display device - Google Patents
Adhesive for sealing liquid crystal element and liquid crystal display deviceInfo
- Publication number
- JPH01254786A JPH01254786A JP8155288A JP8155288A JPH01254786A JP H01254786 A JPH01254786 A JP H01254786A JP 8155288 A JP8155288 A JP 8155288A JP 8155288 A JP8155288 A JP 8155288A JP H01254786 A JPH01254786 A JP H01254786A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- adhesive
- sealing
- epoxy resin
- imparting agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 title claims abstract description 51
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 51
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 36
- 238000007789 sealing Methods 0.000 title claims description 14
- 239000003822 epoxy resin Substances 0.000 claims abstract description 15
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 15
- 239000003999 initiator Substances 0.000 claims abstract description 13
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 125000002723 alicyclic group Chemical group 0.000 claims abstract description 7
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract 2
- 229920000570 polyether Polymers 0.000 claims abstract 2
- 239000000377 silicon dioxide Substances 0.000 claims abstract 2
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 11
- 230000009974 thixotropic effect Effects 0.000 claims description 7
- 229930185605 Bisphenol Natural products 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims 1
- 125000000524 functional group Chemical group 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000012945 sealing adhesive Substances 0.000 claims 1
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 229910002012 Aerosil® Inorganic materials 0.000 description 4
- 238000001723 curing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 2
- -1 bispheno-/l/A type Polymers 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920003319 Araldite® Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は一対のガラス基板を一定の間隔に対向配置し、
両ガラス基板の間に、液晶を封入するシー）ｖ周接着剤
および液晶表示装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention comprises a pair of glass substrates arranged facing each other at a constant interval,
The present invention relates to a liquid crystal adhesive and a liquid crystal display device for sealing a liquid crystal between both glass substrates.
従来の技術
近年の液晶パネルは、封止剤としてビスフェノールＡタ
イプの２液熱硬化型工ポキシ接着剤が使われている例が
多い。その封止のプロセスは、まず接着剤を一方のガラ
ス基板に塗布し、次いで他方の基板と位置合せの後に貼
り合わせし最後に所定の圧力をかけた状態で、２時間以
上の加熱を行なうというものであった。またその接着剤
の機能上の特性としては、以下の点を満足することが条
件とされる。BACKGROUND OF THE INVENTION In recent years, liquid crystal panels often use bisphenol A type two-component thermosetting poxy adhesives as sealants. The sealing process involves first applying an adhesive to one glass substrate, then aligning and bonding it to the other substrate, and finally heating it for over two hours while applying a predetermined pressure. It was something. Furthermore, the functional characteristics of the adhesive must satisfy the following points.
（１）所定の接着強度を有する。(1) It has a predetermined adhesive strength.
（２）イオン成分を含まず液晶の抵抗率を低下させない
。(2) It does not contain ionic components and does not reduce the resistivity of the liquid crystal.
（３）液晶のＮＩ点を低下させない。(3) Do not lower the NI point of the liquid crystal.
なお、ここでＮＩ点（ネマチック−アイソトロピックポ
イント）とは、液晶材料の転位温度のひとつであり、こ
の温度以下ではネマチック相、この温度以上では、等方
性液晶相を示す点のことである。Note that the NI point (nematic-isotropic point) here is one of the transition temperatures of the liquid crystal material, and is the point at which the material exhibits a nematic phase below this temperature and an isotropic liquid crystal phase above this temperature. .
（４）電極を腐食させない。(4) Avoid corrosion of electrodes.
発明が解決しようとする課題
しかしながら、上記記載の２液熱硬化型工ポキシ接着剤
では
（１）２ｉ’ａ性であるため、ポットライフが短かく増
粘してしまいロフト毎に調整をする必要があるため、作
業性が悪い。Problems to be Solved by the Invention However, the two-component thermosetting poxy adhesive described above has (1) 2i'a properties, so the pot life is short and the viscosity increases, so adjustments must be made for each loft. Because of this, workability is poor.
（２）熱硬化型であるため、バッチ処理で、２時間以上
加熱する必要があり、量産性が悪い。またその加熱の際
には、基板を均一に加圧しておく必要があるため、加圧
治具も必要となる。(2) Since it is a thermosetting type, it is necessary to heat it for 2 hours or more in batch processing, which makes it difficult to mass-produce. Further, during heating, it is necessary to apply pressure to the substrate uniformly, so a pressing jig is also required.
（３）短時間で硬化を行なうだめの硬化促進剤を添加す
ると、液晶に対して悪影響を及ぼす。(3) Adding a curing accelerator that does not allow curing in a short period of time will have an adverse effect on the liquid crystal.
等の問題点を有していた。It had the following problems.
また、２液熱硬化型工ポキシ接着剤の他に一液性紫外線
硬化型接着剤を使用して、液晶パネルの組立を行なう例
も、特開昭６０−１１９５２６号公報等に示されている
が、その場合は、上記（１）〜（３）の問題はないが接
着剤の機能上の特性、すなわち前述した（１）〜（４）
の全てを満足し得るものはなかった。Furthermore, an example of assembling a liquid crystal panel using a one-component UV-curable adhesive in addition to a two-component heat-curable polyurethane adhesive is also shown in Japanese Patent Application Laid-Open No. 119526/1983. However, in that case, there are no problems in (1) to (3) above, but the functional properties of the adhesive, i.e., in (1) to (4) mentioned above, are not present.
There was nothing that could satisfy all of them.
この問題に鑑み本発明は、接着剤としての特性も優れ、
また作業性も優れている液晶素子封止用接着剤を提供す
るものである。In view of this problem, the present invention has excellent properties as an adhesive,
The present invention also provides an adhesive for sealing liquid crystal elements that has excellent workability.
課題を解決するための手段
上記課題を解決するために、本発明の液晶素子封止用接
着剤は、脂環式エポキシ樹脂、ビスフェノールエポキシ
樹脂、可撓性付与剤、光重合開始剤およびチクソトロピ
ック性付与剤を主成分として含有するものである。Means for Solving the Problems In order to solve the above problems, the adhesive for liquid crystal element sealing of the present invention contains an alicyclic epoxy resin, a bisphenol epoxy resin, a flexibility imparting agent, a photopolymerization initiator, and a thixotropic adhesive. It contains a sex imparting agent as a main component.
作 用
この構成により、本発明の液晶素子封止用接着剤は接着
剤としての特性にも優れるとともに作業性も優れたもの
となる。Function: Due to this configuration, the adhesive for sealing a liquid crystal element of the present invention has excellent properties as an adhesive and also has excellent workability.
実施例
以下本発明の一実施例について説明する。本発明は、脂
環式エポキシ樹脂、ビスフェノール型エポキシ樹脂、可
焼性付与物、光重合開始剤、チクソトロビック性付与剤
を主成分として含有するものである。EXAMPLE An example of the present invention will be described below. The present invention contains an alicyclic epoxy resin, a bisphenol type epoxy resin, a scorbability imparting agent, a photopolymerization initiator, and a thixotropic property imparting agent as main components.
ここで、本実施例で用いられる脂環式エポキシ樹脂とし
ては、例えば、チバガイギー社の商品名アラルダイ）Ｃ
Ｙｌ −ｔｅａ 、組型化工業（株）の商品名アデカオ
プｌ−マーＫＲＭ−２１００、同ＫＲＭ−２１１０、同
ＫＲＭ−２１９９．ダイセル化学工業（株）の商品名上
ロキサイド２０２１等が、使用できる。Here, the alicyclic epoxy resin used in this example is, for example, Ciba Geigy's product name Araldai) C.
Yl-tea, Adeka Opl-mer KRM-2100, KRM-2110, KRM-2199, manufactured by Kumiteka Kogyo Co., Ltd. The product name ROXIDE 2021 manufactured by Daicel Chemical Industries, Ltd. can be used.
また、ビスフェノールＡ型エポキシ樹脂としては、例え
ばチバガイギー社の商品名アラルダイトＸＡＣ３０２０
，同ＸＡＣ３０１６、同ＸＡＣ３０１７、組型化工業（
株）の商品名アデカオプ１−ンＥＰ４０００．同ＥＰ４
１００Ｅ等が使用でき、可撓性付与剤としては、組型化
工業（株）の商品名アデカオプトマーＫＲＭ２３５１
、同ＫＲＭ２３７９等が使用でき、光重合開始剤として
は、組型化工業（株）の商品名アデカオプトマー５Ｐ１
５ｏ、同５Ｐ１７０等が使用できる。In addition, as a bisphenol A type epoxy resin, for example, Ciba Geigy's product name Araldite XAC3020
, XAC3016, XAC3017, Kumiteka Kogyo (
Co., Ltd.'s product name: ADEKA OP1-EP4000. Same EP4
100E etc. can be used, and as a flexibility imparting agent, Adeka Optomer KRM2351 (trade name, manufactured by Kumiteka Kogyo Co., Ltd.) can be used.
, KRM2379, etc. can be used, and as a photopolymerization initiator, Adeka Optomer 5P1 (trade name, manufactured by Kumi Kata Kogyo Co., Ltd.) can be used.
5o, 5P170, etc. can be used.
更に、チクソトロピック性付与剤としては、日本アエロ
ジル社の商品名アエロジル＃２００ 、同＃３００．同
Ｒ８１２，同Ｒ８０５、同ＲＹ ２００等が使用できる
。Further, as the thixotropic property imparting agent, Nippon Aerosil Co., Ltd.'s trade names Aerosil #200, #300. The same R812, the same R805, the same RY 200, etc. can be used.
また本発明における、液晶素子封止用紫外線硬化型接着
剤には、物性の改質あるいは用途に応じて、種々の改質
添加剤を配合することができる。Further, in the present invention, various modifying additives can be added to the ultraviolet curable adhesive for liquid crystal element sealing depending on the modification of physical properties or the intended use.
例えば、液晶パネル間に適当な間隔を保持させるための
粒状、または針状のスペーサー、接着性および耐湿性を
向上させるためのシリコーン系あるいはチタネート系そ
の他のカップリング剤を配合することもできる。For example, a granular or acicular spacer for maintaining an appropriate distance between liquid crystal panels, and a silicone-based, titanate-based, or other coupling agent for improving adhesiveness and moisture resistance may also be blended.
本発明の一実施例における一液性接着剤の調整に当って
は、各組成の混合に三本ロールの使用が望ましい。In preparing the one-component adhesive in one embodiment of the present invention, it is desirable to use three rolls for mixing each composition.
更に、本実施例の一液性接着剤を用いた液晶セル形成は
、従来の接着剤による封止と同様にスクリーン印刷によ
る方法や、デイスペンサーを用いる方法で、ガラス基板
に塗布を行ない、他方の基板と位置合せの後に貼り合せ
、所定の圧力をかけて紫外線の照射を行ない、接着剤を
硬化させる。Furthermore, in forming a liquid crystal cell using the one-component adhesive of this example, the liquid crystal cell is coated on a glass substrate by screen printing or using a dispenser, similar to the conventional sealing with adhesive. After alignment with the substrate, the adhesive is bonded together, and a predetermined pressure is applied and ultraviolet rays are irradiated to harden the adhesive.
そして、液晶を注入して、注入口を本接着剤あるいは、
その他の一液性接着剤で、封止を行なう。Then, inject the liquid crystal and connect the injection port with this adhesive or
Seal with other one-component adhesive.
紫外線の照射による接着剤の硬化の後に加熱を行なうこ
とにより、硬化後の接着剤の特性は向上する。By heating the adhesive after curing it by irradiation with ultraviolet rays, the properties of the adhesive after curing are improved.
以下、°脂環式エポキシ樹脂、ビスフェノ−／ｌ／Ａ型
、エポキシ樹脂、可撓性付与剤、光重合開始剤の各成分
の量を変えた時のアルミ電極の腐食の有無を調べたもの
を第１表に示す。Below, the presence or absence of corrosion of aluminum electrodes was investigated when the amounts of each component of °alicyclic epoxy resin, bispheno-/l/A type, epoxy resin, flexibility imparting agent, and photopolymerization initiator were changed. are shown in Table 1.
第 １ 表
ここで示したアルミ電極腐食の確認は、ガラス基板上に
、０．１ ｆｌの間隔をあけて蒸着されたくし型電極上
に、１Ｑｏ１１ｍ８度の厚みに、各接着剤を塗布し、紫
外線を照射（１００ｍＷ／ｄＸ１２ＱＳｅＣ） して硬
化させる。次に電極にｓｏＶを印加した状態で、６０
’０９０ ％ ＲＨ（Ｄ恒温恒湿槽内に１０００時間の
放置を行なった後に行なわれる。第１表に示すように、
接着剤中の光重合開始剤の重量％がアルミ電極の腐食の
有無と相関が見られる。すなわち、この系において、ア
ルミ電極の腐食が発生しない光重合開始剤の最大配合量
は、０．６３％程度であった。この原因として考えられ
ることは、光重合開始剤の配合量が多いと、その中に含
まれるフッ素イオン等が、高温高湿下で溶出し、アルミ
電極の腐食を促進するものと考えられる。Table 1 To confirm the corrosion of aluminum electrodes shown here, each adhesive was applied to a thickness of 1Qo11m8 degrees on interdigitated electrodes deposited at intervals of 0.1 fl on a glass substrate, and exposed to ultraviolet light. is irradiated (100 mW/dX12QSeC) to cure. Next, with soV applied to the electrode,
'090% RH (D This is done after being left in a constant temperature and humidity chamber for 1000 hours.As shown in Table 1,
There is a correlation between the weight percentage of the photopolymerization initiator in the adhesive and the presence or absence of corrosion of the aluminum electrode. That is, in this system, the maximum amount of photopolymerization initiator that would not cause corrosion of the aluminum electrode was about 0.63%. A possible reason for this is that when the amount of the photopolymerization initiator is large, fluorine ions and the like contained therein are eluted under high temperature and high humidity, promoting corrosion of the aluminum electrode.
次に、各成分の量を変えた時の接着強度についてその結
果を第２表に示す。Next, Table 2 shows the results of adhesive strength when varying the amounts of each component.
第２表
なお、ここで示している接着強度とは、ガラス板上シて
接着剤を塗布し、アルミニウムの試験片（３ｉｇＸ３顛
×４ＭＮ）を乗せ、一定荷重で加圧しガラス面から、Ｕ
Ｖ照射により接着を行なった後、横方向から、ブツシュ
プリゲージで押圧し、アルミニウム試験片をハク離させ
、その剪断ハク離強度を測定したものである。Table 2 Note that the adhesive strength shown here refers to the adhesive strength applied to a glass plate, an aluminum test piece (3ig x 3 pieces x 4MN) placed on it, and pressure applied with a constant load.
After adhesion was performed by V irradiation, the aluminum test piece was peeled off by pressing from the lateral direction with a push pressure gauge, and the shear peeling strength was measured.
第２表かられかるように、ｆ６の配合量によシ調整を行
なった接着剤が最も高い接着強度を有していた。As can be seen from Table 2, the adhesive in which the amount of f6 was adjusted had the highest adhesive strength.
これは可撓性付与剤に含まれるヒドロキシル基による、
ガラスとの水素結合の数が増加したことによる影響であ
ると考えられる。ただ可撓性付与剤の配合比が多すぎる
と、接着強度が弱くなるのは光重合開始剤濃度が低くな
って、充分な反応を促進することができなくなるからだ
と考えられる。This is due to the hydroxyl group contained in the flexibility imparting agent.
This is thought to be due to the increase in the number of hydrogen bonds with the glass. However, if the blending ratio of the flexibility-imparting agent is too high, the adhesive strength becomes weaker because the photopolymerization initiator concentration becomes lower and the reaction cannot be promoted sufficiently.
またチクソトロピック性付与剤は、特にスクリーン印刷
等を行なう際に、接着剤の粘度およびチクソメロビック
性を高めるために添加されるが、本発明の接着剤におい
ては、アエロジル＃２００゜同＃３００等を５〜１０ｗ
ｔ％添加することにより、適性なチクソトロピック性が
得られる。In addition, thixotropic property imparting agents are added to increase the viscosity and thixomeric properties of adhesives, especially when performing screen printing, etc. In the adhesive of the present invention, Aerosil #200, Aerosil #300, etc. 5~10w
Appropriate thixotropic properties can be obtained by adding t%.
ここで、液晶パネルの組立ての際には、接着剤で二枚の
基板を一定のギャップを保って貼り合わせた後に、接着
剤を硬化させ、二枚の基板の間に液晶を注入する。しか
し、そのとき、液晶の中へ接着剤から溶出した不純物が
、液晶特性を低下させることがある。例えば、液晶がネ
マティック相から、等方性液体相へ転位する温度である
ＮＩ点が、低下したり、液晶の抵抗率が低下する現象の
ことである。本発明の接着剤について、その硬化物が、
液晶とコンタクトした場合に、ＮＩ点の変化や、抵抗率
の変化があるのかどうかを、確認した結果、その変化は
わずかであシ、液晶の特性を劣化させることはないこと
が判明している。When assembling a liquid crystal panel, two substrates are bonded together with an adhesive with a constant gap maintained, the adhesive is cured, and liquid crystal is injected between the two substrates. However, at that time, impurities eluted from the adhesive into the liquid crystal may deteriorate the liquid crystal properties. For example, it is a phenomenon in which the NI point, which is the temperature at which liquid crystal transitions from a nematic phase to an isotropic liquid phase, decreases, or the resistivity of the liquid crystal decreases. Regarding the adhesive of the present invention, the cured product thereof is
As a result of checking whether there is a change in the NI point or a change in resistivity when it comes into contact with a liquid crystal, it has been found that the change is slight and does not deteriorate the characteristics of the liquid crystal. .
本発明の接着剤の接着強度の向上のために、シランカッ
プリング剤の添加も可能であり、例えば日本ユニカー（
株）のＡｌａｅ（ベーター（３゜４エポキシシクロヘキ
シル）エチルトリメトキシシラン）等の添加により、接
着強度は向上する。In order to improve the adhesive strength of the adhesive of the present invention, it is also possible to add a silane coupling agent, such as Nippon Unicar (
By adding Alae (beta(3°4 epoxycyclohexyl)ethyltrimethoxysilane) from Co., Ltd., the adhesive strength is improved.
発明の効果 以上のように本発明は、脂環式エポキシ樹脂。Effect of the invention As described above, the present invention relates to an alicyclic epoxy resin.
ビスフェノールエポキシ樹脂、可撓性付与剤、光重合開
始剤およびチクソトロピノク性付与剤を主成分として含
有することによυ以下のような効果を有する。By containing a bisphenol epoxy resin, a flexibility imparting agent, a photopolymerization initiator, and a thixotropy imparting agent as main components, it has the following effects.
（１）ポットライフが長く、作業性がよい。(1) Long pot life and good workability.
（２）熱硬化の工程が不要となり量産性が高くなる。(2) No heat curing process is required, increasing mass productivity.
Claims (1)
樹脂、可撓性付与剤、光重合開始剤およびチクソトロピ
ック性付与剤を主成分として含有してなる液晶素子封止
用接着剤。（２）可撓性付与剤を１６．６〜３３．２重
量％含有してなる請求項１記載の液晶素子封止用接着剤
。 （３）光重合開始剤が、ビス−〔４−（ジフェニルスル
ホニオ）フェニル〕スルフィド−ビスヘキサフルオロフ
ォスフェート（ＢＤＳ（ＰＦ＿６）＿２）またはビス−
〔４−（ジフェニルスルホニオ）フェニル〕スルフィド
−ビスヘキサフルオロアンチモネート（ＢＤＳ（ＳｂＦ
＿６）＿２）である請求項１記載の液晶素子封止用接着
剤。 （４）チクソトロピック性付与剤が、無水シリカである
請求項１記載の液晶素子封止用接着剤。 （５）可撓性付与剤が、ポリエーテル系である請求項１
記載の液晶素子封止用接着剤。 （６）主成分以外に有機官能グループとしてエポキシ基
を有するシランカップリング剤を含有する請求項１記載
の液晶素子封止用接着剤。 （７）導電性電極を有する面を向い合せて配置した２枚
の基板間の周縁部に請求項１記載の液晶表示素子封止用
接着剤と導電ペーストとを形成してなる液晶表示装置。[Scope of Claims] (1) An adhesive for sealing liquid crystal elements containing as main components an alicyclic epoxy resin, a bisphenol type epoxy resin, a flexibility imparting agent, a photopolymerization initiator, and a thixotropic property imparting agent. agent. (2) The adhesive for sealing a liquid crystal element according to claim 1, which contains 16.6 to 33.2% by weight of a flexibility imparting agent. (3) The photopolymerization initiator is bis-[4-(diphenylsulfonio)phenyl]sulfide-bishexafluorophosphate (BDS(PF_6)_2) or bis-
[4-(Diphenylsulfonio)phenyl]sulfide-bishexafluoroantimonate (BDS (SbF
_6)_2) The liquid crystal element sealing adhesive according to claim 1, which is _6)_2). (4) The adhesive for sealing a liquid crystal element according to claim 1, wherein the thixotropic property imparting agent is anhydrous silica. (5) Claim 1 in which the flexibility imparting agent is polyether-based.
Adhesive for sealing liquid crystal elements as described. (6) The adhesive for sealing a liquid crystal device according to claim 1, which contains, in addition to the main component, a silane coupling agent having an epoxy group as an organic functional group. (7) A liquid crystal display device in which the adhesive for sealing a liquid crystal display element according to claim 1 and a conductive paste are formed on the peripheral edge between two substrates whose surfaces having conductive electrodes are placed facing each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63081552A JP2839260B2 (en) | 1988-04-01 | 1988-04-01 | Liquid crystal element sealing adhesive and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63081552A JP2839260B2 (en) | 1988-04-01 | 1988-04-01 | Liquid crystal element sealing adhesive and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01254786A true JPH01254786A (en) | 1989-10-11 |
| JP2839260B2 JP2839260B2 (en) | 1998-12-16 |
Family
ID=13749454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63081552A Expired - Fee Related JP2839260B2 (en) | 1988-04-01 | 1988-04-01 | Liquid crystal element sealing adhesive and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2839260B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565469A (en) * | 1991-09-06 | 1993-03-19 | Sekisui Chem Co Ltd | Adhesive composition |
| JPH05156230A (en) * | 1991-12-10 | 1993-06-22 | Sony Chem Corp | Adhesive for sealing liquid crystal |
| EP0781809A2 (en) | 1995-12-27 | 1997-07-02 | Mitsui Toatsu Chemicals, Inc. | Resin composition for sealing liquid crystal cells |
| JP2007321004A (en) * | 2006-05-30 | 2007-12-13 | Taiyo Ink Mfg Ltd | Thermosetting adhesive and bonding method, as well as resin laminate-type ic card |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59199713A (en) * | 1983-04-27 | 1984-11-12 | Sumitomo Bakelite Co Ltd | Adjustment of refractive index of cured epoxy resin |
| JPS6051770A (en) * | 1983-08-31 | 1985-03-23 | Toyo Ink Mfg Co Ltd | Optical adhesive |
| JPS61174221A (en) * | 1985-01-30 | 1986-08-05 | Nippon Soda Co Ltd | Photocurable composition |
| JPS61283614A (en) * | 1985-06-10 | 1986-12-13 | Daicel Chem Ind Ltd | Curable resin composition |
| JPS6217729A (en) * | 1985-07-16 | 1987-01-26 | Mitsui Toatsu Chem Inc | Production of cell for sealing liquid crystal |
| JPS62283121A (en) * | 1986-05-30 | 1987-12-09 | Matsushita Electric Ind Co Ltd | Production of molding resin material for optical use |
-
1988
- 1988-04-01 JP JP63081552A patent/JP2839260B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59199713A (en) * | 1983-04-27 | 1984-11-12 | Sumitomo Bakelite Co Ltd | Adjustment of refractive index of cured epoxy resin |
| JPS6051770A (en) * | 1983-08-31 | 1985-03-23 | Toyo Ink Mfg Co Ltd | Optical adhesive |
| JPS61174221A (en) * | 1985-01-30 | 1986-08-05 | Nippon Soda Co Ltd | Photocurable composition |
| JPS61283614A (en) * | 1985-06-10 | 1986-12-13 | Daicel Chem Ind Ltd | Curable resin composition |
| JPS6217729A (en) * | 1985-07-16 | 1987-01-26 | Mitsui Toatsu Chem Inc | Production of cell for sealing liquid crystal |
| JPS62283121A (en) * | 1986-05-30 | 1987-12-09 | Matsushita Electric Ind Co Ltd | Production of molding resin material for optical use |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565469A (en) * | 1991-09-06 | 1993-03-19 | Sekisui Chem Co Ltd | Adhesive composition |
| JPH05156230A (en) * | 1991-12-10 | 1993-06-22 | Sony Chem Corp | Adhesive for sealing liquid crystal |
| EP0781809A2 (en) | 1995-12-27 | 1997-07-02 | Mitsui Toatsu Chemicals, Inc. | Resin composition for sealing liquid crystal cells |
| US5908899A (en) * | 1995-12-27 | 1999-06-01 | Mitsui Chemicals, Inc. | Resin composition for sealing liquid crystal cells |
| JP2007321004A (en) * | 2006-05-30 | 2007-12-13 | Taiyo Ink Mfg Ltd | Thermosetting adhesive and bonding method, as well as resin laminate-type ic card |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2839260B2 (en) | 1998-12-16 |
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| LAPS | Cancellation because of no payment of annual fees |