JP2000338454A - Manufacture of liquid crystal display element - Google Patents

Manufacture of liquid crystal display element

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Publication number
JP2000338454A
JP2000338454A JP15187599A JP15187599A JP2000338454A JP 2000338454 A JP2000338454 A JP 2000338454A JP 15187599 A JP15187599 A JP 15187599A JP 15187599 A JP15187599 A JP 15187599A JP 2000338454 A JP2000338454 A JP 2000338454A
Authority
JP
Japan
Prior art keywords
adhesive
film substrate
layer
film
substrate
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
Application number
JP15187599A
Other languages
Japanese (ja)
Other versions
JP3738312B2 (en
Inventor
Takeshi Suzuki
鈴木  剛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP15187599A priority Critical patent/JP3738312B2/en
Publication of JP2000338454A publication Critical patent/JP2000338454A/en
Application granted granted Critical
Publication of JP3738312B2 publication Critical patent/JP3738312B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PROBLEM TO BE SOLVED: To surely stick a film substrate to a carrier substrate and to properly form a transparent electrode and an alignment layer by imparting excellent adhesive and release properties to the film substrate. SOLUTION: In a method for manufacturing a liquid crystal display element comprising forming a transparent electrode and an alignment layer on a film substrate 1 in the state in which the film substrate 1 is stuck to a carrier substrate 10 via an adhesive 13, the adhesive 13 consists of a double-layer structure composed of a first adhesive layer 14 which adheres to the film substrate 1 with specified adhesive power and a second adhesive layer 15 which strongly adheres to the carrier substrate 10. The adhesive power of the second adhesive layer 15 is larger than that of the first adhesive layer 14. Consequently the film substrate 1 is surely stuck to the carrier substrate 10 via the adhesive 13 and the transparent electrode and the alignment layer are properly formed without releasing the film substrate 1 from the adhesive 13 due to the heat generated in forming the alignment layer or the like. Also as the adhesive power of the second adhesive layer 15 is larger than that of the first adhesive layer 14, the film substrate 1 can be released from the adhesive 13.

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】この発明は、フィルム基板を
用いた液晶表示素子の製造方法に関する。
The present invention relates to a method for manufacturing a liquid crystal display device using a film substrate.

【0002】[0002]

【従来の技術】従来、液晶表示素子には、一対の透明基
板として、フレキシブルな一対のフィルム基板を用いた
構造のものが知られている。図3はその一例を示した図
である。この液晶表示素子は、単純マトリクス型のもの
で、上下一対のフィルム基板1、2を備えている。これ
らフィルム基板1、2は、ポリエーテルサルホン(PE
S)やポリカーボネイト(PC)などの透明な合成樹脂
からなっている。この場合、下側のフィルム基板2の対
向面(同図では上面)には、ITOなどからなる帯状の
透明電極3が行方向(同図では左右方向)に配列形成さ
れており、これら透明電極3の表面は配向膜4で覆われ
ている。また、上側のフィルム基板1の対向面(同図で
は下面)には、ITOなどからなる帯状の透明電極5が
下側のフィルム基板2の透明電極3と直交する方向に配
列形成されており、これら透明電極5の表面は配向膜6
で覆われている。そして、上側のフィルム基板1と下側
のフィルム基板2とは、各配向膜6、4を対向させた状
態で上下に配置され、これらの間には液晶7が封入され
ている。
2. Description of the Related Art Conventionally, a liquid crystal display device having a structure using a pair of flexible film substrates as a pair of transparent substrates is known. FIG. 3 is a diagram showing an example. This liquid crystal display element is of a simple matrix type and includes a pair of upper and lower film substrates 1 and 2. These film substrates 1 and 2 are made of polyethersulfone (PE
S) and a transparent synthetic resin such as polycarbonate (PC). In this case, strip-shaped transparent electrodes 3 made of ITO or the like are arranged and formed in a row direction (horizontal direction in the figure) on the opposing surface (upper surface in the figure) of the lower film substrate 2. The surface of 3 is covered with an alignment film 4. On the opposite surface (the lower surface in the figure) of the upper film substrate 1, strip-shaped transparent electrodes 5 made of ITO or the like are arranged and formed in a direction orthogonal to the transparent electrodes 3 of the lower film substrate 2. The surfaces of these transparent electrodes 5 are oriented films 6
Covered with. The upper film substrate 1 and the lower film substrate 2 are arranged vertically with the alignment films 6, 4 facing each other, and a liquid crystal 7 is sealed between them.

【0003】このような液晶表示素子を製造する場合に
は、図4に示すように、上下一対のフィルム基板1、2
のうち、例えば、上側のフィルム基板1をガラスやセラ
ミックまたは金属などのキャリア基板10にエポキシ系
樹脂の接着剤11により接着し、この状態でフィルム基
板1の表面に透明電極5をフォトリソグラフィ法により
形成した上、配向膜6を印刷などにより形成し、この配
向膜6の表面にラビング処理を施している。なお、下側
のフィルム基板2も、上記と同様に、透明電極3および
配向膜4を形成する。そして、フィルム基板1、2をキ
ャリア基板10から剥離し、2枚のフィルム基板1、2
の各配向膜6、4を対向させた状態で、フィルム基板
1、2を所定の間隔で貼り合わせ、これらの間に液晶7
を封入している。
When such a liquid crystal display device is manufactured, a pair of upper and lower film substrates 1 and 2 are used as shown in FIG.
Among them, for example, the upper film substrate 1 is bonded to a carrier substrate 10 such as glass, ceramic or metal with an adhesive 11 of an epoxy resin, and in this state, a transparent electrode 5 is formed on the surface of the film substrate 1 by photolithography. After the formation, the alignment film 6 is formed by printing or the like, and the surface of the alignment film 6 is subjected to a rubbing treatment. In addition, the transparent electrode 3 and the alignment film 4 are also formed on the lower film substrate 2 in the same manner as described above. Then, the film substrates 1 and 2 are separated from the carrier substrate 10, and the two film substrates 1, 2
With the alignment films 6 and 4 facing each other, the film substrates 1 and 2 are attached at a predetermined interval, and a liquid crystal 7 is interposed therebetween.
Is enclosed.

【0004】[0004]

【発明が解決しようとする課題】このような液晶表示素
子の製造方法では、キャリア基板10にフィルム基板
1、2(以下、上側のフィルム基板1のみについて説明
する。)を接着するための接着剤11に、耐熱性および
耐薬品性が要求されるほか、接着性と剥離性の相反する
性能も要求される。しかしながら、このようなエポキシ
系樹脂の接着剤11では、これらの条件をすべて満足す
ることは困難であり、特に耐熱性および剥離性において
問題がある。例えば、配向膜6を形成するときなどの熱
により、図5に示すように、フィルム基板1が接着剤1
1から剥がれてしまい、その後のラビング処理が困難に
なるという問題がある。
In such a method of manufacturing a liquid crystal display device, an adhesive for bonding the film substrates 1 and 2 to the carrier substrate 10 (hereinafter, only the upper film substrate 1 will be described). No. 11 is required to have not only heat resistance and chemical resistance, but also performance that conflicts with adhesiveness and peelability. However, with such an epoxy resin adhesive 11, it is difficult to satisfy all of these conditions, and there is a problem particularly in heat resistance and peelability. For example, as shown in FIG. 5, the film substrate 1 is bonded to the adhesive 1 by heat generated when the alignment film 6 is formed.
However, there is a problem that the rubbing treatment is difficult afterwards.

【0005】この発明の課題は、接着性および剥離性に
優れ、フィルム基板を確実にキャリア基板に接着させた
状態で、フィルム基板に透明電極や配向膜などを良好に
形成できるようにすることである。
An object of the present invention is to make it possible to excellently form a transparent electrode or an alignment film on a film substrate in a state where the film substrate is securely adhered to a carrier substrate with excellent adhesiveness and peelability. is there.

【0006】[0006]

【課題を解決するための手段】この発明は、液晶を封入
する一対のフィルム基板のうち、少なくとも一方のフィ
ルム基板を接着剤によりキャリア基板に接着し、この状
態で前記フィルム基板に透明電極および配向膜を形成す
る液晶表示素子の製造方法において、前記接着剤は、前
記フィルム基板に所定の接着力で接着する第1接着層
と、前記キャリア基板に所定の接着力で接着する第2接
着層との2層構造で、前記第1接着層よりも前記第2接
着層の接着力が大きいことを特徴とする。この発明によ
れば、第1接着層がフィルム基板に所定の接着力で接着
し、第2接着層がキャリア基板に所定の接着力で接着す
るので、これら第1、第2接着層からなる接着剤によ
り、フィルム基板をキャリア基板に確実に接着させるこ
とができ、このため、例えば配向膜を形成するときなど
の熱によりフィルム基板が接着剤から剥がれることがな
く、キャリア基板にフィルム基板を確実に接着した状態
で、良好に透明電極や配向膜などを形成することがで
き、また第1接着層よりも第2接着層の接着力が大きい
ことにより、フィルム基板を接着剤から剥離することが
できる。
According to the present invention, at least one of a pair of film substrates enclosing a liquid crystal is adhered to a carrier substrate with an adhesive, and in this state, a transparent electrode and an alignment film are attached to the film substrate. In the method for manufacturing a liquid crystal display element for forming a film, the adhesive includes a first adhesive layer that adheres to the film substrate with a predetermined adhesive force, and a second adhesive layer that adheres to the carrier substrate with a predetermined adhesive force. Wherein the adhesive strength of the second adhesive layer is greater than that of the first adhesive layer. According to the present invention, the first adhesive layer adheres to the film substrate with a predetermined adhesive force, and the second adhesive layer adheres to the carrier substrate with a predetermined adhesive force. The agent allows the film substrate to be securely adhered to the carrier substrate, so that the film substrate does not come off from the adhesive due to heat, for example, when forming an alignment film, and the film substrate is securely attached to the carrier substrate. In the bonded state, a transparent electrode, an alignment film, and the like can be satisfactorily formed, and the film substrate can be peeled from the adhesive because the second adhesive layer has a larger adhesive force than the first adhesive layer. .

【0007】この場合、請求項2に記載のごとく、前記
接着剤は、前記第1接着層と前記第2接着層との間にセ
パレータ層が設けられた3層構造であることにより、第
1接着層と第2接着層との成分が混合し合うのを防ぐこ
とができ、これにより第1、第2接着層の各接着性能を
確保することができるので、請求項1記載の発明より
も、接着性および剥離性に優れたものを得ることがで
き、より一層、良好に透明電極や配向膜などを形成する
ことができる。
In this case, the adhesive has a three-layer structure in which a separator layer is provided between the first adhesive layer and the second adhesive layer. It is possible to prevent the components of the adhesive layer and the second adhesive layer from being mixed with each other, thereby securing the respective adhesive performances of the first and second adhesive layers. In addition, it is possible to obtain a product excellent in adhesiveness and peelability, and to form a transparent electrode and an alignment film more favorably.

【0008】[0008]

【発明の実施の形態】[第1実施形態]以下、図1を参
照して、この発明の液晶表示素子の製造方法の第1実施
形態について説明する。なお、図3および図4に示され
た従来例と同一部分には同一符号を付し、その説明は省
略する。この液晶表示素子の製造方法は、フィルム基板
1を2層構造の接着剤13によりキャリア基板10に接
着し、このフィルム基板1に透明電極5および配向膜6
を形成する方法であり、これ以外は従来例と同じであ
る。すなわち、フィルム基板1をキャリア基板10に接
着する接着剤13は、第1接着層14と第2接着層15
との2層構造である。第1接着層14は、フィルム基板
1になじみやすく、かつ剥離性を有するアクリル系樹脂
からなり、フィルム基板1に所定の接着力で接着するも
のである。第2接着層15は、エポキシ系樹脂からな
り、キャリア基板10に強固に接着するもので、その接
着力が第1接着層14よりも大きく形成されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of a method for manufacturing a liquid crystal display device according to the present invention will be described below with reference to FIG. The same parts as those in the conventional example shown in FIGS. 3 and 4 are denoted by the same reference numerals, and the description thereof will be omitted. In this method of manufacturing a liquid crystal display element, a film substrate 1 is bonded to a carrier substrate 10 with an adhesive 13 having a two-layer structure, and a transparent electrode 5 and an alignment film 6 are attached to the film substrate 1.
Is the same as the conventional example. That is, the adhesive 13 for bonding the film substrate 1 to the carrier substrate 10 includes the first adhesive layer 14 and the second adhesive layer 15.
This is a two-layer structure. The first adhesive layer 14 is made of an acrylic resin that is easily compatible with the film substrate 1 and has releasability, and adheres to the film substrate 1 with a predetermined adhesive force. The second adhesive layer 15 is made of an epoxy resin and adheres firmly to the carrier substrate 10. The second adhesive layer 15 has an adhesive force larger than that of the first adhesive layer 14.

【0009】このような接着剤13によりフィルム基板
1をキャリア基板10に接着して、フィルム基板1に透
明電極5および配向膜6を形成する場合には、アクリル
系樹脂からなる第1接着層14がフィルム基板1に所定
の接着力で良好に接着し、エポキシ系樹脂からなる第2
接着層15がキャリア基板10に強固に接着するので、
これら第1、第2接着層14、15からなる接着剤13
により、フィルム基板1をキャリア基板10に確実に接
着させることができる。このため、フィルム基板1に透
明電極5を形成するフォトリソグラフィ工程、およびフ
ィルム基板1に配向膜6を形成してラビング処理を施す
配向膜形成工程において、例えば配向膜6を形成すると
きなどの熱によりフィルム基板1が接着剤13から剥が
れることがなく、キャリア基板10にフィルム基板1を
確実に接着させた状態で、良好に透明電極5および配向
膜6を形成してラビング処理を施すことができる。ま
た、フィルム基板1をキャリア基板10から剥離すると
きには、第1接着層14よりも第2接着層15の接着力
が大きく、かつ第1接着層14がフィルム基板1に体し
て剥離性を有していることにより、フィルム基板1を接
着剤13の第1接着層14から良好に剥離することがで
きる。
When the film substrate 1 is adhered to the carrier substrate 10 with the adhesive 13 to form the transparent electrode 5 and the alignment film 6 on the film substrate 1, the first adhesive layer 14 made of an acrylic resin is used. Is satisfactorily adhered to the film substrate 1 with a predetermined adhesive force.
Since the bonding layer 15 is firmly bonded to the carrier substrate 10,
An adhesive 13 composed of the first and second adhesive layers 14 and 15
Thereby, the film substrate 1 can be securely bonded to the carrier substrate 10. For this reason, in the photolithography step of forming the transparent electrode 5 on the film substrate 1 and the alignment film forming step of forming the alignment film 6 on the film substrate 1 and performing the rubbing process, for example, heat generated when forming the alignment film 6 is used. Thus, the transparent substrate 5 and the alignment film 6 can be satisfactorily formed and the rubbing treatment can be performed in a state where the film substrate 1 is securely bonded to the carrier substrate 10 without peeling the film substrate 1 from the adhesive 13. . When the film substrate 1 is peeled from the carrier substrate 10, the second adhesive layer 15 has a larger adhesive force than the first adhesive layer 14, and the first adhesive layer 14 is peeled off from the film substrate 1. By doing so, the film substrate 1 can be satisfactorily separated from the first adhesive layer 14 of the adhesive 13.

【0010】[第2実施形態]次に、図2を参照して、
この発明の液晶表示素子の製造方法の第2実施形態につ
いて説明する。なお、図1に示された第1実施形態と同
一部分には同一符号を付し、その説明は省略する。この
液晶表示素子の製造方法は、フィルム基板1を3層構造
の接着剤20によりキャリア基板10に接着し、このフ
ィルム基板1に透明電極5および配向膜6を形成する方
法であり、これ以外は第1実施形態と同じである。すな
わち、この接着剤20は、フィルム基板1に所定の接着
力で接着するアクリル系樹脂からなる第1接着層14
と、キャリア基板10に強固に接着するエポキシ系樹脂
からなる第2接着層15との間に、セパレータ層21を
設けた3層構造に形成されている。この場合、セパレー
タ層21は、ポリエチレンテレフタレート(PET)な
どの合成樹脂からなり、その厚みが50μm以下で、好
ましくは25μm程度に形成されている。
[Second Embodiment] Next, referring to FIG.
A second embodiment of the method for manufacturing a liquid crystal display device according to the present invention will be described. The same parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. This method of manufacturing a liquid crystal display element is a method in which a film substrate 1 is bonded to a carrier substrate 10 with an adhesive 20 having a three-layer structure, and a transparent electrode 5 and an alignment film 6 are formed on the film substrate 1. This is the same as the first embodiment. That is, the adhesive 20 is applied to the first adhesive layer 14 made of an acrylic resin and adhered to the film substrate 1 with a predetermined adhesive force.
It is formed in a three-layer structure in which a separator layer 21 is provided between the second bonding layer 15 made of an epoxy resin and firmly bonded to the carrier substrate 10. In this case, the separator layer 21 is made of a synthetic resin such as polyethylene terephthalate (PET) and has a thickness of 50 μm or less, preferably about 25 μm.

【0011】このような接着剤20によりフィルム基板
1をキャリア基板10に接着して、フィルム基板1に透
明電極5および配向膜6を形成する場合には、アクリル
系樹脂からなる第1接着層14がフィルム基板1に所定
の接着力で接着し、エポキシ系樹脂からなる第2接着層
15がキャリア基板10に強固に接着するので、第1実
施形態と同様、接着剤20によりフィルム基板1をキャ
リア基板10に確実に接着させることができ、この状態
で良好に透明電極5および配向膜6を形成してラビング
処理を施すことができる。特に、接着剤20は、第1、
第2接着層14、15の間にセパレータ層21を設けた
構造であるから、このセパレータ層21により第1接着
層14と第2接着層15との成分が混合し合うのを防ぐ
ことができ、これにより第1、第2接着層14、15の
各接着性能を確保することができるので、第1実施形態
の場合よりも、接着性および剥離性に優れたものを得る
ことができる。また、セパレータ層21は、その厚みが
50μm以下で、好ましくは25μm程度であることに
より、フィルム基板1とキャリア基板10との温度差に
よる応力歪を緩和することができ、熱によるフィルム基
板1の剥がれや浮きを確実に防止することができる。こ
のため、この接着剤20では、極めて耐熱性が良く、か
つ耐久性にも優れ、キャリア基板10にフィルム基板1
を接着した状態で、第1実施形態の場合よりも、より一
層、良好に透明電極5および配向膜6を形成してラビン
グ処理を施すことができる。
When the film substrate 1 is adhered to the carrier substrate 10 with the adhesive 20 to form the transparent electrode 5 and the alignment film 6 on the film substrate 1, the first adhesive layer 14 made of an acrylic resin is used. Is adhered to the film substrate 1 with a predetermined adhesive force, and the second adhesive layer 15 made of an epoxy resin is firmly adhered to the carrier substrate 10. Therefore, as in the first embodiment, the film substrate 1 is The transparent electrode 5 and the alignment film 6 can be satisfactorily formed and rubbed in this state. In particular, the adhesive 20 is first,
Since the separator layer 21 is provided between the second adhesive layers 14 and 15, the separator layer 21 can prevent the components of the first adhesive layer 14 and the second adhesive layer 15 from being mixed. Thus, the adhesive performance of the first and second adhesive layers 14 and 15 can be ensured, so that a material having better adhesiveness and releasability than in the first embodiment can be obtained. The separator layer 21 has a thickness of 50 μm or less, preferably about 25 μm, so that stress distortion caused by a temperature difference between the film substrate 1 and the carrier substrate 10 can be reduced, and the film substrate 1 Peeling and floating can be reliably prevented. For this reason, the adhesive 20 has extremely good heat resistance and excellent durability, and the film substrate 1
In the state in which the transparent electrode 5 and the alignment film 6 are adhered, the rubbing treatment can be performed by forming the transparent electrode 5 and the alignment film 6 more favorably than in the case of the first embodiment.

【0012】なお、上記第1、第2実施形態では、液晶
表示素子の一対のフィルム基板1、2のうち、上側のフ
ィルム基板1について述べたが、これに限らず、下側の
フィルム基板2についても、まったく同様に適用するこ
とができる。また、上記第1、第2実施形態では、液晶
表示素子として、白黒表示の単純マトリクス型の場合に
ついて述べたが、これに限らず、例えば、一方のフィル
ム基板に薄膜トランジスタなどの駆動素子を搭載した透
明な画素電極を形成し、他方のフィルム基板に透明な共
通電極を形成したアクティブ型の液晶表示素子にも適用
することができ、また一方のフィルム基板にカラーフィ
ルタを設けたカラー表示の液晶表示素子にも適用するこ
とができる。
In the first and second embodiments, the upper film substrate 1 of the pair of film substrates 1 and 2 of the liquid crystal display element has been described. However, the present invention is not limited to this. Can be applied in exactly the same way. In the first and second embodiments, the liquid crystal display element is described as a simple matrix type of black and white display. However, the present invention is not limited to this. For example, a driving element such as a thin film transistor is mounted on one film substrate. It can be applied to an active type liquid crystal display device in which a transparent pixel electrode is formed and a transparent common electrode is formed on the other film substrate, and a color liquid crystal display having a color filter provided on one film substrate. It can also be applied to devices.

【0013】[0013]

【発明の効果】以上説明したように、この発明によれ
ば、フィルム基板を接着剤によりキャリア基板に接着
し、この状態でフィルム基板に透明電極および配向膜を
形成する液晶表示素子の製造方法において、接着剤が、
フィルム基板に所定の接着力で接着する第1接着層と、
キャリア基板に所定の接着力で接着する第2接着層との
2層構造であるから、これら第1、第2接着層からなる
接着剤により、フィルム基板をキャリア基板に確実に接
着させることができ、このため、例えば配向膜を形成す
るときなどの熱によりフィルム基板が接着剤から剥がれ
ることがなく、キャリア基板にフィルム基板を接着した
状態で、良好に透明電極や配向膜などを形成することが
でき、また第1接着層よりも第2接着層の接着力が大き
いことにより、フィルム基板を接着剤から剥離すること
ができる。この場合、第1接着層と第2接着層との間に
セパレータ層を設けられた3層構造であれば、第1接着
層と第2接着層との成分が混合し合うのを防ぐことがで
き、これにより第1、第2接着層の各接着性能を確保す
ることができるので、接着性および剥離性に優れたもの
を得ることができ、より一層、良好に透明電極や配向膜
などを形成することができる。
As described above, according to the present invention, there is provided a method of manufacturing a liquid crystal display device in which a film substrate is bonded to a carrier substrate with an adhesive, and a transparent electrode and an alignment film are formed on the film substrate in this state. , Glue,
A first adhesive layer that adheres to the film substrate with a predetermined adhesive force;
Since it has a two-layer structure with the second adhesive layer that adheres to the carrier substrate with a predetermined adhesive force, the film substrate can be securely adhered to the carrier substrate by the adhesive composed of the first and second adhesive layers. Therefore, for example, the film substrate is not peeled off from the adhesive by heat such as when forming an alignment film, and it is possible to form a transparent electrode or an alignment film and the like in a state where the film substrate is bonded to the carrier substrate. The film substrate can be peeled off from the adhesive because the second adhesive layer has a higher adhesive strength than the first adhesive layer. In this case, with a three-layer structure in which a separator layer is provided between the first adhesive layer and the second adhesive layer, it is possible to prevent the components of the first adhesive layer and the second adhesive layer from being mixed. This makes it possible to secure the respective adhesive performances of the first and second adhesive layers, so that it is possible to obtain a material having excellent adhesiveness and peelability, and to further satisfactorily form a transparent electrode or an alignment film. Can be formed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の液晶表示素子の製造方法の第1実施
形態において、2層構造の接着剤によりフィルム基板を
キャリア基板に接着した状態を示した要部の拡大断面
図。
FIG. 1 is an enlarged cross-sectional view of a main part showing a state in which a film substrate is bonded to a carrier substrate with a two-layered adhesive in a first embodiment of a method for manufacturing a liquid crystal display element of the present invention.

【図2】この発明の液晶表示素子の製造方法の第2実施
形態において、3層構造の接着剤によりフィルム基板を
キャリア基板に接着した状態を示した要部の拡大断面
図。
FIG. 2 is an enlarged cross-sectional view of a main part showing a state in which a film substrate is adhered to a carrier substrate with an adhesive having a three-layer structure in a second embodiment of the method for manufacturing a liquid crystal display element of the present invention.

【図3】液晶表示素子の断面図。FIG. 3 is a cross-sectional view of a liquid crystal display element.

【図4】従来の接着剤によりフィルム基板をキャリア基
板に接着した状態を示した要部の拡大断面図。
FIG. 4 is an enlarged sectional view of a main part showing a state in which a film substrate is bonded to a carrier substrate with a conventional adhesive.

【図5】図4の状態で熱によりフィルム基板が接着剤か
ら剥離する状態を示した要部の拡大断面図。
FIG. 5 is an enlarged sectional view of a main part showing a state in which the film substrate is peeled off from the adhesive by heat in the state of FIG. 4;

【符号の説明】[Explanation of symbols]

1、2 フィルム基板 3、5 透明電極 4、6 配向膜 7 液晶 10 キャリア基板 13 2層構造の接着剤 14 第1接着層 15 第2接着層 20 3層構造の接着剤 21 セパレータ層 1, 2 Film substrate 3, 5 Transparent electrode 4, 6 Alignment film 7 Liquid crystal 10 Carrier substrate 13 Two-layer adhesive 14 First adhesive layer 15 Second adhesive layer 20 Three-layer adhesive 21 Separator layer

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】液晶を封入する一対のフィルム基板のう
ち、少なくとも一方のフィルム基板を接着剤によりキャ
リア基板に接着し、この状態で前記フィルム基板に透明
電極および配向膜を形成する液晶表示素子の製造方法に
おいて、 前記接着剤は、前記フィルム基板に所定の接着力で接着
する第1接着層と、前記キャリア基板に所定の接着力で
接着する第2接着層との2層構造で、前記第1接着層よ
りも前記第2接着層の接着力が大きいことを特徴とする
液晶表示素子の製造方法。
1. A liquid crystal display device comprising a pair of film substrates enclosing liquid crystal, wherein at least one of the film substrates is bonded to a carrier substrate with an adhesive, and a transparent electrode and an alignment film are formed on the film substrate in this state. In the manufacturing method, the adhesive has a two-layer structure of a first adhesive layer that adheres to the film substrate with a predetermined adhesive force, and a second adhesive layer that adheres to the carrier substrate with a predetermined adhesive force. A method for manufacturing a liquid crystal display device, wherein the adhesive strength of the second adhesive layer is larger than that of the first adhesive layer.
【請求項2】前記接着剤は、前記第1接着層と前記第2
接着層との間にセパレータ層が設けられた3層構造であ
ることを特徴とする請求項1記載の液晶表示素子の製造
方法。
2. The method according to claim 1, wherein the adhesive comprises the first adhesive layer and the second adhesive layer.
2. The method according to claim 1, wherein the liquid crystal display element has a three-layer structure in which a separator layer is provided between the adhesive layer and the adhesive layer.
JP15187599A 1999-05-31 1999-05-31 Manufacturing method of liquid crystal display element Expired - Fee Related JP3738312B2 (en)

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Application Number Priority Date Filing Date Title
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Country Link
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WO2002067044A1 (en) * 2001-02-19 2002-08-29 Matsushita Electric Industrial Co., Ltd. Liquid crystal display employing plastic substrate
US7453533B2 (en) 2004-09-11 2008-11-18 Samsung Electronics Co., Ltd. Jig for delivering liquid crystal display plate and method of fabricating liquid crystal display
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