JPH10123537A - Liquid crystal display element and its production - Google Patents

Liquid crystal display element and its production

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Publication number
JPH10123537A
JPH10123537A JP27197396A JP27197396A JPH10123537A JP H10123537 A JPH10123537 A JP H10123537A JP 27197396 A JP27197396 A JP 27197396A JP 27197396 A JP27197396 A JP 27197396A JP H10123537 A JPH10123537 A JP H10123537A
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seal
liquid crystal
crystal display
display device
elastic material
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JP27197396A
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Japanese (ja)
Inventor
Norihiko Egami
Takao Inoue
Takayuki Nagahara
Shuji Ueda
修治 上田
孝夫 井上
孝行 永原
典彦 江上
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Matsushita Electric Ind Co Ltd
松下電器産業株式会社
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Abstract

PROBLEM TO BE SOLVED: To obtain a liquid crystal display element which is free from image unevenness defects by peeling of seals for sticking two substrates to each other and with which the aperture ratio of a screen may be increased by using the seals which consist of double structures consisting of an elastic material seal in the inner side.
SOLUTION: The elastic material seal 9 on the inner side, the outer seal 10 and liquid crystals 11 are arranged between the two substrates 7 and 8 arranged to face each other while a specified gap is maintained therebetween. The elastic material seal 9 on the inner side adheres to the one substrate 7 alone and is merely into contact with the other substrate 8 and is not adhered and fixed thereto. Then, even if the force by working in later stages acts on the substrates, the upper side of the elastic material seal 9 is freely movable and the force acting over the entire part of the elastic material seal 9 decreases and, therefore, the seal peeling is lessened. The elastic material seal 9 is formed taller than the outer seal 10. A hermetic sealing effect is thus obtd. by the falling and contracting of the elastic material seal 9 at the time of sticking the substrates 7, 8.
COPYRIGHT: (C)1998,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、パーソナルコンピュータやTV受像機等の画像表示パネルとして用いられる液晶表示素子とその製造方法に関するものである。 The present invention relates to relates to a liquid crystal display device and a manufacturing method thereof which is used as an image display panel such as a personal computer or a TV receiver.

【0002】 [0002]

【従来の技術】液晶表示素子の従来例を図9〜図11に示す。 A conventional example of the Related Art A liquid crystal display device shown in FIGS. 9 to 11.

【0003】一般的な液晶表示素子の構造は図9に示すように、向かい合わせて配置した2枚の基板1、2間を一定のギャップに保ちながらシール3と液晶4が配置される。 [0003] The structure of a general liquid crystal display device as shown in FIG. 9, the seal 3 and the liquid crystal 4 is disposed while maintaining between two substrates 1 and 2 disposed facing in a constant gap. 液晶4をシール3内に配置する方法として、一般的には、シール3をアレー基板1の上にスクリーン印刷又はディスペンサによる印刷により所定の形状に塗布し、アレー基板1とカラーフィルター基板2とをシール3を介して重ね合わせ紫外線及び又は熱硬化により液晶4の注入スペースを形成しその後液晶注入封口する方法と、アレー基板にシール塗布後シール硬化前に液晶を滴下しその後直ちにカラーフィルター基板を重ね合わせ紫外線及び又は熱硬化によりパネルを完成させる液晶滴下工法がある。 As a method of placing the liquid crystal 4 into the sealing 3, in general, the seal 3 is applied into a predetermined shape by printing by screen printing or a dispenser on the array substrate 1, the array substrate 1 and the color filter substrate 2 overlapping and methods followed to form an injection space of the liquid crystal 4 crystal injection sealed mouth, immediately thereafter the color filter substrate and liquid crystal is dropped before after sealant coating seals cured array substrate by UV and or thermosetting superimposed via the seal 3 to complete the combined ultraviolet and or panel by thermal curing is a liquid crystal dropping process. 後者の工法は液晶歩留り・工程数の削減の点で前者に比べ優れている。 The latter method is superior to the former in terms of the reduction in the number of crystal yield and process.

【0004】この、液晶滴下工法でのシール構造と工程には次の2種類が代表的である。 [0004] The following two types of sealing structures and processes of the liquid crystal dropping process are typical. まず一つめのシール構造と工程を示す。 It shows the first one of the sealing arrangement and process first. 図10(a)、(b)に示すように、 FIG. 10 (a), the (b), the
1枚の基板1にUV硬化シール3aを塗布し、同じ基板1のUV硬化シール3aの内側に液晶4aを滴下させる。 The UV curable sealing 3a is applied to one substrate 1, thereby dropping the liquid crystal 4a inside the UV curable sealing 3a of the same substrate 1. 次に、図10(c)に示すように、もう一方の基板2を貼り合わせ、最後にUV硬化シール3aを硬化する。 Next, as shown in FIG. 10 (c), bonding the other substrate 2, and finally curing the UV curable sealing 3a. この工法の場合、液晶4aとの混合を避けるために極力速く硬化させるためにUV硬化シール3aを用いた1重構造シールである。 In this method, a singlet structure sealed with UV curable sealing 3a to cure much as possible quickly to avoid mixing with the liquid crystal 4a. なお、UV硬化シール3aの代わりに熱硬化シールを用いる方法もあるが、硬化時間が遅いため、液晶との拡散混合が発生するため望ましくない。 Incidentally, there is a method of using a thermosetting sealing instead of UV-curing sealing 3a, since a slow curing time, diffusion mixing of the liquid crystal is not desired to occur.

【0005】次に二つめのシール構造と工程を示す。 [0005] shown below The second sealing structure and process. 図11(a)、(b)に示すように、1枚の基板1にUV As shown in FIG. 11 (a), (b), UV on one substrate 1
硬化シール3aの外側に熱硬化シール3bを用い2重構造にし、液晶4aを滴下させる。 On the outside of the cured seal 3a and a double structure using a thermosetting sealing 3b, thereby dropping the liquid crystal 4a. 次に、図11(c)に示すように、もう一方の基板2を貼り合わせ、UV硬化シール3aと熱硬化シール3bを硬化する。 Next, as shown in FIG. 11 (c), bonding the other substrate 2, to cure the UV curable seal 3a and a thermosetting seal 3b. この工法の場合、UV硬化シール3aにより液晶4aと熱硬化シール3bとが接触するのを避ける2重構造シールとなっており、熱硬化シール3bにより全体の接着力を向上させている。 In this method, thereby improving the overall adhesion by double structure sealing a is turned, the thermosetting sealing 3b to avoid contact between the liquid crystal 4a and the thermosetting sealing 3b by UV curing sealing 3a.

【0006】また、液晶表示素子のシール塗布に関する製造方法の従来例は図12(a)、(b)に示すように、基板1の1枚にスクリーン印刷版5またはディスペンサ6を用いてシール剤3を塗布している。 Further, the liquid crystal conventional manufacturing method for sealing the coating of the display device FIG. 12 (a), the (b), the sealing agent using a screen printing plate 5 or dispenser 6 in one substrate 1 3 is applied are.

【0007】 [0007]

【発明が解決しようとする課題】すなわち、1重構造シールの場合、UV硬化シール3aは熱硬化シール3bに比べて硬化は早いため液晶との拡散混合は小さいが接着力が弱くUV硬化シール3aの部分剃離によりUV硬化シール3a近傍での画像不良が発生する問題も生じた。 [0007] That is, a singlet in the structure sealing, UV curable seal 3a is UV curable sealing 3a diffusion mixing small weak adhesion curing the liquid crystal for faster than the thermosetting sealing 3b also resulted in partial razor image problem defect occurs in the UV curable sealing 3a near the release.
特に、後工程(割断等)での加工時の基板1、2変形によるシール剃離が生じるなど接着力の向上が課題となっている。 In particular, the improvement of adhesion, such as releasing be sealed by the substrate 1,2 deformation during processing in the subsequent step (fracturing, etc.) occurs has become an issue.

【0008】一方、2重構造シールの場合、昨今の高開口率が望まれる中で、UV硬化シール3aの外側に熱硬化シール3bを塗布するので、シール幅が広くなり有効視野面積が狭くなるという不具合が生じてきた。 On the other hand, if the double structure seals, in the recent high aperture ratio is desired, since applying a thermosetting seal 3b outside the UV curable sealing 3a, the effective visual field area seal width becomes wider narrows a problem that has arisen.

【0009】さらに、シール塗布工法について、狭くファインなシール印刷が出来ればいいと考えられるが、従来のスクリーン印刷版5やディスペンサ6を用いたシール塗布では、線幅精度10μm,厚さ精度1μm以下のシール幅を確保して塗布することはできなかったため、 Furthermore, the sealant coating method, it is considered that good if it is narrow fine seal print, a seal coating using a conventional screen printing plate 5 and the dispenser 6, the line width accuracy 10 [mu] m, the accuracy 1μm or less in thickness since it could not be applied to ensure a seal width,
画面開口率を上げることができなかった。 It was not possible to increase the screen aperture ratio.

【0010】本発明は、上記の問題点を解決し、接着力が強く、しかも液晶汚染のない新しいシール構造とその製造方法に関するものであり、シール剃離により画像ムラ不良をなくし、かつ、画面開口率を上げることができる液晶表示素子とその製造方法を提供するものである。 [0010] The present invention is to solve the above problems, the adhesive strength is strong, yet is a method for producing the same and a new seal structure without the liquid crystal contamination, eliminating image unevenness defect by sealing SuHanare and screen it can be increased and the aperture ratio is to provide a method of manufacturing a liquid crystal display device.

【0011】 [0011]

【課題を解決するための手段】本願第1発明の液晶表示素子は、上記の課題を解決するために、2枚の基板を貼り合わせるシールが2重構造であり、内側が弾性体シールであることを特徴とする。 The liquid crystal display device of the first invention [Means for Solving the Problems To solve the above problems, a seal is double structure of bonding two substrates, the inner is a rubber seal it is characterized in. なお、内側の弾性体シールは一方の基板とだけ接着し、他方の基板とは接触しているだけで接着固定はされないようにする。 Incidentally, bonded only the inner elastic seal one substrate, the other substrate so as not adhesion fixed just in contact. 従って、加工による力が作用してもシールの上下に力が作用しないので、シール剥離は少なくなる。 Therefore, the force due to processing is not applied forces above and below the seal also act, seal peeling is reduced. また、内側が弾性体シールであると、シールが容易に変形してガラスとの密閉性が増し、液晶が外部に流れ出ることがなくなるので、外側シールが液晶と混ざり合うことがなくなり、外側シール剥がれや画像ムラ不良がなくなる。 Further, when the inside is rubber seal, the seal is easily deformed increases the sealing with the glass, the liquid crystal is eliminated that flows to the outside, prevents the outer seal mixes with the liquid crystal, peeling outer seal and image unevenness failure is eliminated.

【0012】本願第2発明の液晶表示素子の製造方法は、上記の課題を解決するために、シールを凹版オフセット印刷にて塗布することを特徴とする。 [0012] The present method of manufacturing a liquid crystal display device of the second invention, in order to solve the above problems, is characterized by applying a seal at intaglio offset printing.

【0013】本願第2発明によれば、シールを凹版オフセット印刷にて塗布するので、シール幅が精度10μm [0013] According to the present second invention, since applying the seal in intaglio offset printing, seal width accuracy 10μm
を確保して200μm以下の線幅で塗布することができるので、画面開口率を上げることができる。 It is possible to to ensure the coating at a line width less than 200 [mu] m, it is possible to increase the screen aperture ratio.

【0014】具体的には、2枚の基板を貼り合わせるシールが2重構造であり、内側が弾性体シールであることを特徴とする液晶表示素子であり、内側シール上面の一部が突起形状であることを特徴とする液晶表示素子であり、内側シールがUV硬化及び又は熱硬化シールであることを特徴とする液晶表示素子であり、外側シールがU [0014] More specifically, a seal is double structure of bonding two substrates, a liquid crystal display device inside characterized in that it is a rubber seal, projection-shaped part of the inner sealing top a liquid crystal display element characterized in that at a liquid crystal display device in which the inner seal, characterized in that a UV curing and or thermosetting seal, outer seal is U
V硬化及び又は熱硬化シールであることを特徴とする液晶表示素子である。 A liquid crystal display device which is a V curing and or thermosetting seal.

【0015】また、液晶表示素子のシールが2重構造であり、内側が弾性体シールを有している液晶表示素子において、内側シールをUV光照射にて硬化させその後に外側シールを塗布し、その後液晶を滴下し相手基板を貼り合わせることを特徴とする液晶表示素子の製造方法が好ましく、外側シールがUV硬化シールであることを特徴とする液晶表示素子の製造方法も好ましく、2枚の基板を貼り合わせるシールが2重構造を有している液晶表示素子において、内側シールが全シール幅の25%以下の線幅であることを特徴とする液晶表示素子の製造方法であり、2枚の基板を貼り合わせるシールが2重構造を有している液晶表示素子において、内側シールを凹版オフセット印刷にて塗布することを特徴とする液晶表示素子の製造方法であ Further, a seal is double structure of the liquid crystal display device, a liquid crystal display device inside has a rubber seal, the outer seal coating the inner seal then was cured by UV irradiation, then a method of manufacturing a liquid crystal display device characterized by bonding a liquid crystal is dropped party substrate are preferred, preferably the manufacturing method of the liquid crystal display element characterized by outer seal is a UV curable seal, the two substrates the bonded in the liquid crystal display device in which the seal has a double structure, a method of manufacturing a liquid crystal display element characterized by the inner seal is 25% or less of the line width of the entire seal width, two in the liquid crystal display device in which the seal bonding the substrate has a double structure, the manufacturing method der of the liquid crystal display device which is characterized by applying an inner seal at intaglio offset printing .

【0016】 [0016]

【発明の実施の形態】本願第1発明の液晶表示素子と製造方法の一実施の形態を図1〜図4に基づいて説明する。 It will be described with reference PREFERRED EMBODIMENTS present an embodiment of the liquid crystal display device and manufacturing method of the first invention in FIGS.

【0017】図1に液晶表示素子の一実施形態を示す。 [0017] Figure 1 illustrates one embodiment of a liquid crystal display device.
向かい合わせて配置した2枚の基板7、8間を一定のギャップに保ちながら内側の弾性体シール9と外側シール10と液晶11が配置される。 Inner rubber seal 9 and the outer seal 10 and the liquid crystal 11 are arranged keeping between two substrates 7 and 8 arranged facing the constant gap. 図2に示すように、内側の弾性体シール9は一方の基板7とだけ接着し、他方の基板8とは接触しているだけで接着固定はされないようにする。 As shown in FIG. 2, the inner rubber seal 9 is bonded with only one of the substrates 7, the other substrate 8 so as not adhesion fixed just in contact. 従って、後工程での加工による力が作用しても内側の弾性体シール9の上側が従来より自由に動くことができ、内側の弾性体シール9全体に作用する力が少なくなるので、シール剥離は少なくなる。 Therefore, even if force acts due to processing in the subsequent step can be above the inner rubber seal 9 move more freely conventionally, the force acting on the entire inside of the rubber seal 9 is reduced, the seal peeling less it is. また、図3 In addition, FIG. 3
(a)に示すように、内側の弾性体シール9は外側シール10よりも高くし、基板7、8貼り合わせ時の内側の弾性体シール9の倒れ込みや、縮みにより密閉硬化も得ることができる。 (A), the inner rubber seal 9 is greater than the outer seal 10, falling and inside the rubber seal 9 during bonding substrates 7,8 may also be obtained sealing cured by contraction . (図3(b)・図3(c)参照)内側の弾性体シール9は従来のシールのように接着力は不要であり、液晶11が漏れて外側シール10に接触することさえなければよい。 (FIG. 3 (b) · Figure 3 (c) refer) inside the rubber seal 9 is adhesion as in the conventional seal is not required, it it were not the liquid crystal 11 may leak into contact with the outer seal 10 . 従って、材料が従来に比べてより柔らかい弾性体であればよい。 Thus, the material may be a softer elastic material as compared with the prior art. 好ましくは、反力が接着力の20%以下となることが好ましい。 Preferably, it is preferred that the reaction force is equal to or less than 20% of the adhesion. ただし、液晶1 However, the liquid crystal 1
1と反応しにくい安定した材料である必要がある。 1 and it is necessary that the reaction hardly stable material.

【0018】本実施の形態において、図4に示すように、内側の弾性体シール9は変形しやすく密着性を増すために突起形状があってもよい。 In the present embodiment, as shown in FIG. 4, inner rubber seal 9 may be a projection-shaped in order to increase the adhesion easily deformed. 突起形状は、シールしやすくしかも先に述べたように反力が小さくなる方が好ましい。 Projection shape, it is preferable to seal easily addition reaction force as described above is reduced.

【0019】(実施の形態1)図5(a)〜図5(c) [0019] (Embodiment 1) FIG. 5 (a) ~ FIG 5 (c)
に本願第1発明の液晶表示素子の製造方法の一実施の形態を示す。 It illustrates one embodiment of a method of manufacturing a liquid crystal display device of the present first invention. 図5(a)に示すように、まず基板7に内側の弾性体シール9を塗布する。 As shown in FIG. 5 (a), first applied to the inside of the rubber seal 9 to the substrate 7. 塗布方法は、実施例2で述べる凹版オフセット印刷によるものが形状等の制御に好ましいが、スクリーン印刷、精密描画、インクジェット等の塗布法を用いることもできる。 Coating method is preferred to control the shape or the like by intaglio offset printing described in Example 2, screen printing, precision drawing, also possible to use a coating method such as inkjet.

【0020】その後、UV光にて硬化させ、内側の弾性体シールを得ることが出来る。 [0020] Then, was cured by UV light, it can be obtained inside of the rubber seal. 弾性体シール9としては、光により(特に紫外光)ラジカルを発生させる光開始剤と(メタ)アクリロイルオキシキを有する(メタ) The rubber seal 9, having a light (especially ultraviolet light) with a photoinitiator that generates radicals (meth) acryloyloxy key (meth)
アクリレート組成物又は、エポキシ基を有するビスフェノール型及び又はノボラック系エポキシ及び又は四環式エポキシからなる組成物に、光により開始剤としてカチオン又はアニオンを発生させ硬化できるシール剤であればよい。 Acrylate composition or, bisphenol type and or novolac epoxy and or compositions comprising a tetracyclic epoxy having an epoxy group, may be a sealing agent which can be cured by generating a cation or anion as an initiator by light. ウレタン系エーテル結合主鎖等を有する分子構造のオリゴマーを有するものが好ましい。 Those with oligomers of molecular structure having a urethane ether linkage main chain are preferable. 柔軟性を出せるシリコーン系の光接着剤も好ましい。 Light silicone adhesive put out flexibility also preferred. その後に、弾性体シール9の外周に外側シール10(接着力の強いシール)を図5(b)に示すようにディスペンサで塗布し、 Thereafter, the outer seal 10 (strong seal of adhesive strength) was coated with a dispenser, as shown in FIG. 5 (b) on the outer periphery of the rubber seal 9,
基板7の弾性シール内に液晶11を滴下配置する。 Dropping placing liquid 11 within the resilient seal of the substrate 7. 最後に図5(c)に示すように、基板8を貼り合わせ外側シール10をUV光にて硬化させる。 Finally, as shown in FIG. 5 (c), to the outer seal 10 bonded to the substrate 8 is cured by UV light.

【0021】本実施の形態において、外側シールはUV [0021] In this embodiment, the outer seal UV
硬化性を用いる事が好ましいが、熱硬化とUV光により硬化してもよい。 It is preferable to use a curable, but may be cured by thermal curing and UV light.

【0022】この方法を用いることにより、液晶と未硬化シール剤が液晶と混ざり合う心配もなく、点灯不良ゼロという画期的なシールを得ることが出来た。 [0022] By using this method, without fear that the liquid crystal and an uncured sealant mixes with the liquid crystal, it was possible to obtain an innovative seal of lighting zero defects.

【0023】(実施の形態2)本願第2発明の液晶表示素子の製造方法と製造装置の一実施の形態を図6(a) [0023] An embodiment of the manufacturing method and manufacturing apparatus of the liquid crystal display device (Embodiment 2) The present second invention FIGS. 6 (a)
〜図6(e)に基づいて説明する。 It will be described with reference to-FIG 6 (e).

【0024】図6(a)において、内側シールの形状にあらかじめ版を設定溝深さの凹版を形成しておく、凹版は、機械加工でも得ることが出来るが、ガラスの版にエッチング加工して得ることが好ましい。 [0024] In FIG. 6 (a), the previously formed the intaglio advance plate set groove depth to the shape of the inner seal, intaglio, although can be obtained also by machining, by etching the plate glass it is preferable to obtain. 凹版深さは、シール剤の組成にもよるが、印刷厚さの約3倍の深さで作成することが好ましい。 Intaglio depth, depending on the composition of the sealant, it is preferably made of approximately 3 times the depth of the print thickness. そのようにして得られた凹版溝に、内側の弾性体シールとなるべきシール12をスキージ14によりスキージングし溝に埋める。 Intaglio groove so obtained to fill the squeegeeing and grooves by squeegee 14 a seal 12 to become the inside of the rubber seal. ガラス版13 Glass version 13
はシール12のパターンに合わせた凹版である。 It is intaglio tailored to the pattern of the seal 12. 次に図6(b)・図6(c)に示すように、転写ローラー15 Next, as shown in FIG. 6 (b) · FIG. 6 (c), the transfer roller 15
にシール12を受理し、ローラー15からシール12を基板7に転写する。 The seal 12 is received in, to transfer the seal 12 to the substrate 7 from the roller 15. 基板7に液晶11を配置し、もう一方の基板8を貼り合わせ、その後、光及び又は熱により硬化させる。 Place the liquid crystal 11 to the substrate 7, laminating the other substrate 8, then cured by light and or heat.

【0025】本実施の形態において、最も好ましいのは実施例1のシールが2重シールの場合であるが、実施例2のように、そのうちの1重のみに本製造方法を適用してもよい。 [0025] In this embodiment, although the case most preferred embodiment 1 seal double seal, as in Example 2, may be applied to the manufacturing method only singlet of the . このように、凹版形状を用いることにより、 Thus, by using the intaglio plate shape,
シール形状を精密に形成することが出来た。 The seal shape can be precisely formed.

【0026】(実施の形態3)また本実施の凹版オフセット印刷形態において、図7・図8に示すように、シール12は液晶表示素子の周辺部に有り液晶と接触する所から、転写ローラー15はシール12近傍のみに限定して印刷されることが好ましく、こうすることにより印刷でも、液晶異常のない最もよいシール構造を得ることが出来た。 [0026] In intaglio offset printing form of addition the present embodiment (Embodiment 3), as shown in FIG. 7 and FIG. 8, the seal 12 from where contact with the liquid crystal is in the periphery of the liquid crystal display device, the transfer roller 15 it preferably has to be printed is limited only to the seal 12 near at the printing by doing so, it was possible to obtain the best sealing structure with no liquid crystal abnormalities.

【0027】 [0027]

【発明の効果】2枚の基板を貼り合わせるシールが2重構造であり、内側が弾性体シールを有している液晶表示素子とする本発明は、液晶滴下工法の最大の課題であったシール剤と液晶の混合による液晶劣化の心配なく組立を行うことが出来るという点で工業的価値は大なるものがある。 A Effect of the Invention Two double structure be bonded sealing substrate, the present invention inside a liquid crystal display device having a rubber seal, the seal was the biggest challenges of the liquid crystal dropping process industrial value in terms of agent and it is possible to perform the assembly without fear of a liquid crystal degradation due to mixing of the liquid crystal there is one large made. また、内側シール上面の一部が突起形状であることにより更に信頼性の高い液晶表示素子を提供することが出来る。 Moreover, it is a part of the inner sealing top surface further to provide a highly reliable liquid crystal display element by a protrusion shape.

【0028】内側シールは、そのため自由に選択することが出来、UV硬化及び又は熱硬化シールのどちらでもよく、硬化後に液晶に接するという優れた液晶表示素子の製造方法である。 The inner seal, therefore can be freely chosen, may be either of the UV curing and or thermosetting seal, a method of manufacturing a liquid crystal display device excellent in that contact with the liquid crystal after curing.

【0029】外側シールが接着力を形成するシール剤であり、UV硬化及び又は熱硬化シールの接着力が大きいシール剤であればよいという品質の安定な液晶表示素子を提供することが出来る。 [0029] a sealing agent outer seal to form an adhesive strength, it is possible to provide a stable liquid crystal display device of the quality of may be a sealant adhesive force is large in UV curing and or thermosetting seal.

【0030】これらの液晶表示素子のシールが2重構造であり、内側が弾性体シールを有している液晶表示素子において、内側シールをUV光照射にて硬化させその後に外側シールを塗布し、その後液晶を滴下し相手基板を貼り合わせることを特徴とする液晶表示素子の製造方法が最適な工程削減を実現する。 [0030] a seal is double structure of these liquid crystal display devices, a liquid crystal display device inside has a rubber seal, the outer seal coating the inner seal then was cured by UV irradiation, then method for producing a liquid crystal is dropped liquid crystal display device characterized by bonding the mating substrate to achieve optimal process reduction.

【0031】外側シールがUV硬化シールである製造方法が更に好ましい工程削減となる。 The manufacturing method outer seal is a UV curable seal is more preferred process reduced. 2枚の基板を貼り合わせるシールが2重構造を有している液晶表示素子において、内側シールが全シール幅の25%以下の線幅であることを特徴とする液晶表示素子の製造方法。 In the liquid crystal display device in which the seal of bonding two substrates has a double structure, a method of manufacturing a liquid crystal display element characterized by the inner seal is 25% or less of the line width of the entire seal width.

【0032】本願第1発明の液晶表示素子と製造方法によると、内側が弾性体シールであると、シールが容易に変形してガラスとの密閉性が増し、液晶が外部に流れ出ることがなくなるので、外側シールが液晶と混ざり合うことがなくなり、外側シール剥がれや画像ムラ不良がなくなる。 The liquid crystal display device of the first invention according to the manufacturing method, the inner is a rubber seal, the seal is sealed with the glass increases and easily deformed, the liquid crystal can be eliminated flowing to the outside , prevents the outer seal mixes with the liquid crystal, peeling the outer seal and an uneven image defect is eliminated.

【0033】本願第2発明の液晶表示素子の製造方法によれば、シールが±10μmのシール幅や±0.1μm According to the manufacturing method of the liquid crystal display device of the present second invention, seal width and ± 0.1 [mu] m of the seal is ± 10 [mu] m
の高さ精度を確保して塗布することができるので、両面開口率を上げることができるという画期的なものであり、工業的価値は大なるものがある。 It is possible to apply to ensure the height accuracy is intended breakthrough that can increase the double-sided aperture ratio, industrial value there is a large becomes.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の液晶表示素子の一実施形態の構成図 Diagram of an embodiment of a liquid crystal display device of the present invention; FIG

【図2】本発明の液晶表示素子の一実施形態のシール接着状態を示す図 Shows a sealing adhesion state of an embodiment of a liquid crystal display device of the present invention; FIG

【図3】本発明の液晶表示素子の一実施形態のシール形状を示す図 Shows a sealing configuration of an embodiment of a liquid crystal display device of the present invention; FIG

【図4】本発明の液晶表示素子の一実施形態のシール形状を示す図 Shows a sealing configuration of an embodiment of a liquid crystal display device of the present invention; FIG

【図5】本発明の液晶表示素子の一実施形態の製造工程を示す図 Views showing manufacturing steps of an embodiment of a liquid crystal display device of the present invention; FIG

【図6】本発明の液晶表示素子の一実施形態の製造工程を示す図 Views showing manufacturing steps of an embodiment of a liquid crystal display device of the present invention; FIG

【図7】本発明の液晶表示素子の一実施形態の製造装置を示す図 Shows a manufacturing apparatus of an embodiment of a liquid crystal display device of the present invention; FIG

【図8】本発明の液晶表示素子の一実施形態の製造装置を示す図 Shows a manufacturing apparatus of an embodiment of a liquid crystal display device of the present invention; FIG

【図9】液晶表示素子の構成を示す分解斜視図 Figure 9 is an exploded perspective view showing a configuration of a liquid crystal display device

【図10】従来例の液晶表示素子の製造工程を示す図 10 is a diagram showing a manufacturing process of a liquid crystal display device of the prior art

【図11】従来例の液晶表示素子の製造工程を示す図 11 is a diagram showing a manufacturing process of a liquid crystal display device of the prior art

【図12】従来例の液晶表示素子の製造装置を示す図 12 is a diagram showing a manufacturing apparatus of a liquid crystal display device of the prior art

【符号の説明】 DESCRIPTION OF SYMBOLS

1、2 基板 3 シール 3a UV硬化シール 3b 熱硬化シール 4、4a 液晶 5 スクリーン印刷版 6 ディスペンサ 7、8 基板 9 内側の弾性体シール 10 外側シール 11 液晶 Second substrates 3 seals 3a UV curable seal 3b thermosetting sealing 4,4a LCD 5 the screen printing plate 6 dispenser 7,8 board 9 inside the rubber seal 10 outer seal 11 liquid

───────────────────────────────────────────────────── フロントページの続き (72)発明者 上田 修治 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Shuji Ueda Osaka Prefecture Kadoma Oaza Kadoma 1006 address Matsushita Electric industrial Co., Ltd. in

Claims (8)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 2枚の基板を貼り合わせるシールが内周部、外周部に形成された2重構造であり、前記内周部が弾性体シールを有していることを特徴とする液晶表示素子。 1. A two sealing an inner peripheral portion of bonding the substrate, a double structure formed on an outer peripheral portion, a liquid crystal display, characterized in that the inner peripheral portion has a rubber seal element.
  2. 【請求項2】 内周シール上面の一部が突起形状であることを特徴とする請求項1記載の液晶表示素子。 The liquid crystal display device according to claim 1, wherein a portion of wherein the peripheral seal upper surface characterized in that it is a projection shape.
  3. 【請求項3】 内周シールがUV硬化及び又は熱硬化シールであることを特徴とする請求項1記載の液晶表示素子。 The liquid crystal display device according to claim 1, wherein the peripheral seal is characterized in that it is a UV curable and or thermosetting seal.
  4. 【請求項4】 外周シールがUV硬化及び又は熱硬化シールであることを特徴とする請求項1記載の液晶表示素子。 4. A liquid crystal display device according to claim 1, wherein the peripheral seal is characterized in that it is a UV curable and or thermosetting seal.
  5. 【請求項5】 液晶表示素子のシールが内周部、外周部に形成された2重構造であり、内周部が弾性体シールを有している液晶表示素子において、一方の基板に形成された内周シールをUV光照射にて硬化させ、その後に外周シールを塗布し、その後液晶を滴下し、他方の基板と貼り合わせることを特徴とする液晶表示素子の製造方法。 Sealing the inner peripheral portion of 5. A liquid crystal display device, a double structure formed on an outer peripheral portion, in the liquid crystal display device the inner peripheral portion has a rubber seal, is formed on one of the substrates the peripheral seal was cured by UV irradiation among the, then the peripheral sealing is applied to, then dropping the liquid crystal, a method of manufacturing a liquid crystal display device characterized by bonding the other substrate.
  6. 【請求項6】 外周シールがUV硬化シールであることを特徴とする請求項5記載の液晶表示素子の製造方法。 6. The method for manufacturing a liquid crystal display device according to claim 5, wherein the peripheral seal is characterized in that it is a UV curable seal.
  7. 【請求項7】 2枚の基板を貼り合わせるシールが内周部、外周部に形成された2重構造を有している液晶表示素子において、内周シールが全シール幅の25%以下の線幅であることを特徴とする液晶表示素子の製造方法。 7. inner peripheral portion be bonded sealing two substrates, the liquid crystal display device having a double structure formed on an outer peripheral portion, 25% or less of the line of the inner peripheral seal all seal width method of manufacturing a liquid crystal display element characterized by the width.
  8. 【請求項8】 2枚の基板を貼り合わせるシールが内周部、外周部に形成された2重構造を有している液晶表示素子において、内側シールを凹版オフセット印刷にて塗布することを特徴とする液晶表示素子の製造方法。 8. two sheets of inner peripheral portion be bonded sealing substrate, the liquid crystal display device having a double structure formed on an outer peripheral portion, wherein applying the inner seal by intaglio offset printing method of manufacturing a liquid crystal display element according to.
JP27197396A 1996-10-15 1996-10-15 Liquid crystal display element and its production Pending JPH10123537A (en)

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