JPH0973096A - Production of liquid crystal display device - Google Patents

Production of liquid crystal display device

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Publication number
JPH0973096A
JPH0973096A JP22780095A JP22780095A JPH0973096A JP H0973096 A JPH0973096 A JP H0973096A JP 22780095 A JP22780095 A JP 22780095A JP 22780095 A JP22780095 A JP 22780095A JP H0973096 A JPH0973096 A JP H0973096A
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liquid crystal
crystal display
display device
light
step
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JP22780095A
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JP3161296B2 (en )
Inventor
Hideki Matsukawa
Atsumasa Naitou
Satoru Shinsenji
Satoshi Yamada
温勝 内藤
聡 山田
秀樹 松川
哲 秦泉寺
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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 liq. crystal display device excellent in display grade while using a UV-curing resin as a sealing material. SOLUTION: This liq. crystal display device is produced through a process for dropping a liq. crystal material on one of the opposite faces of a pair of transparent substrates 11, 12, a process for coating one of the opposite faces with a UV-curing resin type sealing material 13, a process for sticking the substrates 11, 12 to each other, a process for disposing a light shielding mask 16 on the outside of the substrate 12 so that light reaches only the sealing material 13 through the mask 16 and a process for curing the sealing material 13 by irradiating with UV 20 from the outside of the mask 16.

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、パーソナルコンピュータやワードプロセッサなどのOA機器や、産業分野のハンディ端末機器や、携帯型情報通信機器などに用いられる液晶表示素子の製造方法に関するものである。 BACKGROUND OF THE INVENTION The present invention, and OA equipment such as personal computers and word processors, and the handy terminal device industry, a method of manufacturing a liquid crystal display device used in mobile-type information communication equipment.

【0002】 [0002]

【従来の技術】従来の液晶表示素子の製造方法には、真空注入が一般的によく扱われている。 The manufacturing method of a conventional liquid crystal display device, vacuum injection is generally well handled. 図7に示すように、真空注入とは2枚のガラス基板44を接着剤で貼り合わせた空セル40を用意して、真空槽41中にその空セル40と液晶42を溜めたプール45を設置し、ある一定の真空度に達してからその空セル40の一つの注入口43をプール45に浸し、真空槽41内の圧力を大気圧に戻すと、空セル40内に液晶42が毛細管現象で吸い上げられる。 As shown in FIG. 7, the vacuum injection to prepare an empty cell 40 bonding the glass substrate 44 of the two with an adhesive, the empty cell 40 and the pool 45 pooled liquid crystal 42 in a vacuum chamber 41 installed, dipped one inlet 43 of the air cell 40 after reaching a certain degree of vacuum in the pool 45, the back pressure in the vacuum chamber 41 to the atmospheric pressure, the liquid crystal 42 is capillary empty cell 40 It is sucked up in the phenomenon. そして、空セル40の全面に液晶が広がると、注入口43に接着剤を塗布して封じる。 When the liquid crystal is spread over the entire surface of an empty cell 40, seal the adhesive is applied to the inlet 43. 空セル4 Empty cell 4
0のシール樹脂には一般的に熱硬化型樹脂、または紫外線硬化型樹脂が用いられる。 The 0 of the sealing resin generally thermosetting resin or an ultraviolet curable resin, it is used. 以上のような一連の工程で液晶表示素子の液晶42の注入ができるが、注入作業に長時間を要する。 Although it is the injection of the liquid crystal 42 of the liquid crystal display device in a series of steps as described above, it takes a long time injection operation. 特に、大きいサイズの空セルほど真空槽41の圧力と空セル40内の圧力を同じにするのに時間を要す。 In particular, time consuming to be the same pressure of larger size air cells as the pressure and the air cell 40 of the vacuum chamber 41. また、今後液晶表示素子の応答速度を速めるために、セルギャップを従来の6〜7μmから4μm程度にする傾向がある。 Further, in order to accelerate the response speed of the liquid crystal display element future, they tend to make the cell gap from conventional 6~7μm about 4 [mu] m. セルギャップを狭くするほど、空セル40内の圧力を一定にしたり、毛細管現象で液晶を引き上げるにも従来の数倍の時間を必要とされる。 The more narrow the cell gap, or the pressure in the air cell 40 at a constant, also it requires several times the conventionally raise the liquid crystal by capillary action. このため、現在では工程の短縮が図れるような様々な方式が提案されている。 Therefore, there have been proposed various methods such as can be shortened process at present.

【0003】例えば、液晶表示素子に液晶材料を短時間で封入する方法として、図8に示す滴下工法というものがある。 [0003] For example, as a method for sealing the liquid crystal material in a short period of time to the liquid crystal display device, there is called dropping process shown in FIG. 2枚のガラス基板50,51の内面にはすでに配向膜を形成し、その後ラビング処理を施している。 The inner surface of the two glass substrates 50 and 51 already form an alignment layer, it is subjected to subsequent rubbing treatment. 一方のガラス基板50には貼り合わせのためのシール樹脂54をスクリーン印刷やディスペンサーなどでパターン形成する。 On one glass substrate 50 to pattern the sealing resin 54 for bonding screen printing or a dispenser and the like. シール樹脂54には後工程を考えて、熱硬化型樹脂ではなく光硬化型樹脂を用いるのが望ましい。 The sealing resin 54 thinking post-process, to use a photocurable resin rather than thermosetting resin is preferable. 他方のガラス基板51には適正量の液晶52を滴下することにより、液晶表示素子のギャップを形成することができる。 By dropping the liquid crystal 52 of the proper amount to the glass substrate 51, it is possible to form a gap of the liquid crystal display device. そして、両ガラス基板50,51を真空槽53中に配置し、槽内が最適な真空度に達したら、両ガラス基板50,51を貼り合わせる。 Then, the two glass substrates 50 and 51 disposed in a vacuum chamber 53, when the reached optimal vacuum vessel, bonding both the glass substrates 50 and 51. そして、貼り合わせられたガラス基板50,51のシール樹脂54を硬化するために、全面に紫外線を照射してシール樹脂54を架橋して固める。 Then, in order to cure the sealing resin 54 of the glass substrate 50 and 51 are bonded, solidified by crosslinking a sealing resin 54 is irradiated with ultraviolet rays on the entire surface. 次に、液晶表示素子となる領域を残して、ガラス基板50,51を裁断する。 Then, leaving the region to be the liquid crystal display device, to cut the glass substrate 50 and 51.

【0004】以上のような工程で液晶表示素子を短時間で完成させ、真空注入のような長時間の工程やバッチ処理によらず、インラインで連続的なプロセス工程を築くことができる。 [0004] to complete the liquid crystal display device in a short time in the above-described steps, regardless of the long process or a batch process, such as vacuum injection, it is possible to build a continuous process steps in-line. また、液晶表示素子のサイズが大きくても、またセルギャップが狭くてもセル作りに要する時間は全く変わらない。 In addition, even if a large size of the liquid crystal display element, but also does not change at all the time required for the cell-making is also narrow cell gap.

【0005】 [0005]

【発明が解決しようとする課題】このように、滴下による工法で、紫外線硬化型のシール樹脂54を用いて短時間に液晶セルを作り上げることが重要となるが、シール樹脂54を紫外線により硬化する際、液晶表示素子中の液晶材料に紫外線による悪影響を与えることがあった。 BRIEF Problem to be Solved] Thus, in method by dropping, but it is important to make up the liquid crystal cell in a short time by using an ultraviolet curable seal resin 54, the sealing resin 54 is cured by ultraviolet time, there is an adverse effect due to ultraviolet rays to the liquid crystal material in the liquid crystal display device.
一般的な液晶材料は紫外線に弱いため、液晶材料の抵抗値が変化したり、強い紫外線では成分が分解することもある。 For typical liquid crystal materials sensitive to ultraviolet radiation, resistance or change in the liquid crystal materials, but also that the components are degraded in strong ultraviolet light. このような液晶表示素子を信頼性試験にかけると、電流値や光学特性が著しく変化し、液晶表示装置として保証できるものにはなり得ない。 Applying such a liquid crystal display device in reliability testing, the current value and optical properties change significantly, it can not become to what can be guaranteed as a liquid crystal display device.

【0006】近年、液晶材料にも紫外線の強いものが多くなったが、エンドユーザーから均一で美しい表示品位に優れた液晶表示素子への要望が強い。 [0006] In recent years, it has become many things strong ultraviolet rays to a liquid crystal material, demand for liquid crystal display device excellent in uniform and beautiful display quality from the end user is strong. そのため、液晶表示素子内の液晶材料に対する安定性が求められ、プロセスでの悪影響は防がなくてはならない。 Therefore, stability is required for the liquid crystal material in the liquid crystal display device, adverse effects of the process must be prevented. 以上の点から、液晶表示素子のシール樹脂の硬化に際し、液晶材料や配向膜に紫外線照射による悪影響を抑える方法が求められている。 In view of the above, upon curing of the sealing resin of the liquid crystal display device, a method of suppressing the adverse effect of UV irradiated to the liquid crystal material and an alignment film is demanded.

【0007】この発明は上記従来の問題を解決するもので、シール材に紫外線硬化型樹脂を使用しながら、表示品位の優れた液晶表示素子を得ることができる液晶表示素子の製造方法を提供することを目的とする。 [0007] The present invention is intended to solve the conventional problems described above, while using an ultraviolet curable resin in the sealant, to provide a method of manufacturing a liquid crystal display device capable of obtaining an excellent liquid crystal display device of the display quality and an object thereof.

【0008】 [0008]

【課題を解決するための手段】請求項1の液晶表示素子の製造方法は、一対の透明基板のいずれか一方の対向面に液晶材料を滴下する工程と、一方の透明基板の対向面に紫外線硬化型のシール材を塗布する工程と、一対の透明基板を貼り合わせる工程と、一方の透明基板の外面にシール材に対応する部分を残して遮光可能な遮光マスクを配置する工程と、遮光マスクの外面から紫外線を照射してシール材を硬化させる工程とを含むものである。 Means for Solving the Problems The method for manufacturing a liquid crystal display device according to claim 1 includes the steps of dropping a liquid crystal material on one of the opposed surfaces one of the pair of transparent substrates, ultraviolet facing surface of one transparent substrate a step of applying a curable sealant, placing a step of bonding a pair of transparent substrates, a light shielding possible shielding mask to leave a portion corresponding to the sealing material to the outer surface of one transparent substrate, a light-shielding mask it is intended to include a step of curing the sealing material from the outer surface by irradiation with ultraviolet rays.

【0009】請求項1の液晶表示素子の製造方法によれば、紫外線硬化型樹脂からなるシール材を硬化するために照射された紫外線が、シール材以外の液晶や配向膜等に照射されることのないように、遮光マスクによって遮光し、配向乱れやしきい値ムラを起こすことなく、シール材の硬化を円滑に行うことができる。 According to the manufacturing method of the liquid crystal display device of claim 1, the UV irradiated to cure the sealing material made of an ultraviolet curable resin is irradiated to the liquid crystal and the orientation film or the like other than the sealing material as no, then blocked by the light blocking mask, without causing alignment disturbance or threshold unevenness, can be cured sealant smoothly. 請求項2の液晶表示素子の製造方法は、一対の透明基板のいずれか一方の対向面に液晶材料を滴下する工程と、一方の透明基板の対向面に紫外線硬化型のシール材を塗布する工程と、 Method of manufacturing a liquid crystal display device according to claim 2, the step of applying the step of dropping the liquid crystal material on one of the opposed surfaces one of the pair of transparent substrates, an ultraviolet-curing sealing material on the opposing surface of one transparent substrate When,
一対の透明基板を貼り合わせる工程と、一方の透明基板の外面にシール材に対応する部分を残して遮光可能な遮光マスクを配置する工程と、他方の透明基板の外面に基板全面を遮光可能な全面遮光部材を配置する工程と、遮光マスクの外面から紫外線を照射してシール材を硬化させる工程とを含むものである。 A step of bonding a pair of transparent substrates, a placing a light shielding possible shielding mask to leave a portion corresponding to the sealing material to the outer surface of one transparent substrate, the entire substrate surface to the outer surface of the other transparent substrate capable shielding placing the entire light-shielding member, by irradiating ultraviolet rays from the outer surface of the light-shielding mask is intended to include a step of curing the sealing material.

【0010】請求項2の液晶表示素子の製造方法によれば、紫外線硬化型樹脂からなるシール材を硬化するために照射された紫外線が、シール材以外の液晶や配向膜等に照射されることのないように、遮光マスクによって遮光し、配向乱れやしきい値ムラを起こすことなく、シール材の硬化を円滑に行うことができる。 According to the manufacturing method of the liquid crystal display device according to claim 2, the UV irradiated to cure the sealing material made of an ultraviolet curable resin is irradiated to the liquid crystal and the orientation film or the like other than the sealing material as no, then blocked by the light blocking mask, without causing alignment disturbance or threshold unevenness, can be cured sealant smoothly. さらに、シール材を透過した紫外線が、跳ね返って液晶表示素子に入射するのを、全面遮光部材にて防ぐことができる。 Furthermore, ultraviolet light that has passed through the sealing material, from entering rebounded on the liquid crystal display device can be prevented by the entire surface light-shielding member.

【0011】請求項3の液晶表示素子の製造方法は、一対の透明基板のいずれか一方の対向面に液晶材料を滴下する工程と、一方の透明基板の対向面に紫外線硬化型のシール材を塗布する工程と、一対の透明基板を貼り合わせる工程と、各透明基板の外面にそれぞれシール材に対応する部分を残して遮光可能な一対の遮光マスクを配置する工程と、一方の遮光マスクの外面から紫外線を照射してシール材を硬化させる工程とを含むものである。 [0011] manufacturing process of the liquid crystal display device according to claim 3, the step of dropping the liquid crystal material on one of the opposed surfaces one of the pair of transparent substrates, an ultraviolet-curing sealing material on the opposing surface of one transparent substrate a step of applying, a step of arranging a step of bonding a pair of transparent substrates, a pair of light-shielding mask can be shading, leaving a portion corresponding to the sealing material to the outer surface of the transparent substrate, the outer surface of one of the light shielding mask by irradiating ultraviolet rays from those comprising a step of curing the sealing material.

【0012】請求項3の液晶表示素子の製造方法によれば、紫外線硬化型樹脂からなるシール材を硬化するために照射された紫外線が、シール材以外の液晶や配向膜等に照射されることのないように、遮光マスクによって遮光し、配向乱れやしきい値ムラを起こすことなく、シール材の硬化を円滑に行うことができる。 According to the manufacturing method of the liquid crystal display device according to claim 3, the ultraviolet rays irradiated to cure the sealing material made of an ultraviolet curable resin is irradiated to the liquid crystal and the orientation film or the like other than the sealing material as no, then blocked by the light blocking mask, without causing alignment disturbance or threshold unevenness, can be cured sealant smoothly. さらに、シール材を透過した紫外線が、跳ね返って液晶表示素子に入射するのを、反紫外線照射側の遮光マスクにて防ぐことができる。 Furthermore, ultraviolet light that has passed through the sealing material, from entering the liquid crystal display device rebound, can be prevented by anti-ultraviolet irradiation side of the light-shielding mask.

【0013】請求項4の液晶表示素子の製造方法は、請求項1,2または3において、液晶表示素子の側面を側面遮光部材にて遮光した状態で紫外線を照射することを特徴とするものである。 The method of manufacturing a liquid crystal display device according to claim 4 resides in that in Claim 1, 2 or 3, characterized in that irradiation of ultraviolet rays while shielding the side surfaces of the liquid crystal display device in side shielding member is there. 請求項4の液晶表示素子の製造方法によれば、液晶表示素子の側面から紫外線が回り込んで入射するのを、側面遮光部材にて防ぐことができる。 According to the manufacturing method of the liquid crystal display device according to claim 4, from a side of the liquid crystal display device from entering wraps around UV, it can be prevented in a side shielding member.

【0014】 [0014]

【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION

第1の実施の形態 この発明の第1の実施の形態における液晶表示素子の製造方法について、図1ないし図3に基づいて説明する。 A method of manufacturing the liquid crystal display device according to the first embodiment of the first embodiment the present invention will be described with reference to FIGS.
図1は、液晶表示素子10の製造プロセスにおいて、シール材13の硬化を行う工程の構成図である。 Figure 1 is a manufacturing process of the liquid crystal display device 10 is a configuration diagram of a step of performing curing of the sealant 13. 図において、11,12は、内面にそれぞれ配向膜を形成しラビング処理を施した一対のガラス基板であり、ガラス基板11(または12)の対向面に紫外線硬化型樹脂からなるシール材13を塗布し、他方のガラス基板12の対向面に液晶材料を滴下して貼り合わせる。 In the figure, 11 and 12 are a pair of glass substrates having been subjected to a rubbing processing the orientation films respectively on the inner surface, applying a sealant 13 made of an ultraviolet curable resin on the opposite surface of the glass substrate 11 (or 12) and, bonded by dropping a liquid crystal material on the opposing surface of the other glass substrate 12. また、14は液晶表示素子10に紫外線20を照射するためのランプ、 Further, 14 lamp for irradiating ultraviolet rays 20 to the liquid crystal display device 10,
15は反射板であり、ガラス基板12側から液晶表示素子10の全面に紫外線20が照射される。 15 is a reflective plate, the entire surface UV 20 of the liquid crystal display element 10 from the glass substrate 12 side is irradiated.

【0015】また、ランプ14と液晶表示素子10との間には、液晶表示素子10と接触するように遮光マスク16を設置する。 Further, between the lamp 14 and the liquid crystal display element 10, installing a shielding mask 16 to make contact with the liquid crystal display device 10. 遮光マスク16は、透光性基板17に遮光膜18を形成したものであり、シール材13のパターンに応じて遮光膜18のパターンが決定される。 Shielding mask 16 is obtained by forming a light-shielding film 18 on the transparent substrate 17, the pattern of the light shielding film 18 is determined in accordance with the pattern of the sealing material 13. すなわち、シール材13のパターンが図2に示すような場合、遮光マスク16のパターンは図3に示すように、シール材13に対応する部分を残して遮光膜18を形成したものとなる。 That is, if the pattern of the sealing material 13 as shown in FIG. 2, the pattern of the light shielding mask 16 as shown in FIG. 3 becomes to form the light shielding film 18 while leaving the portion corresponding to the sealing member 13. なお、透光性基板17はガラス製であって、板厚が4mm以上あると、熱などの影響で反ったりせず、また遮光膜18は黒色インキでパターン化してなる。 Incidentally, the light-transmitting substrate 17 is made of glass, the thickness is more than 4 mm, not warped by the influence of heat, also light-shielding film 18 is formed by patterning with a black ink.

【0016】ランプ14から照射された紫外線20は、 [0016] ultraviolet light 20 emitted from the lamp 14,
遮光マスク16の遮光膜18が形成されていない透光部19を透過し、シール材13のみに照射され、シール材13が硬化する。 Transmitted through the light transmitting portion 19 of the light shielding film 18 is not formed in the light shielding mask 16 is irradiated only on the sealant 13, the sealant 13 is cured. なお、シール材13と遮光マスク16 Incidentally, the sealing member 13 and the light-shielding mask 16
のパターン合わせについては、紫外線20の漏れによって局部的に液晶や配向膜に紫外線20が照射され、配向乱れやしきい値ムラを起こすことのない程度の精度を要す。 For pattern matching, locally ultraviolet 20 in the liquid crystal and the orientation film is irradiated by the leakage of the ultraviolet 20, Yosu accuracy degree not to cause alignment disorder and thresholds uneven. また、ガラス基板11,12を貼り合わせてからシール材13に紫外線20を照射するまでに時間が掛かり過ぎると、シール材13が未硬化のために液晶へ溶け出すことがあり、この工程は短時間で処理する必要がある。 Also, when too much time until irradiated with ultraviolet rays 20 to the sealing member 13 after attaching the glass substrates 11 and 12, may sealant 13 from dissolving into the liquid crystal for the uncured, the process is short there is a need to be processed in time.

【0017】このように構成された液晶表示素子の製造方法によると、シール材13を硬化するために照射された紫外線20が、シール材13以外の液晶や配向膜等に照射されることのないように、遮光マスク16によって遮光し、配向乱れやしきい値ムラを起こすことなく、シール材13の硬化を円滑に行うことができる。 [0017] According to the manufacturing method of the thus configured liquid crystal display element, UV 20 irradiated to cure the sealing material 13, without being irradiated to the sealing material 13 than the liquid crystal and the orientation film or the like as was blocked by the light blocking mask 16, without causing alignment disturbance or threshold unevenness, it can be cured sealant 13 smoothly. したがって、シール材13に紫外線硬化型樹脂を使用しながら、 Therefore, while using an ultraviolet curable resin in the sealant 13,
表示品位に優れた液晶表示素子10を得ることができる。 It is possible to obtain a liquid crystal display device 10 with excellent display quality.

【0018】また、遮光マスク16を設置するだけであり、プロセス導入が円滑に運んで、設備費も安価である。 [0018] In addition, it only installed a light-shielding mask 16, carrying process introduced smoothly, equipment cost is also inexpensive. 第2の実施の形態 この発明の第2の実施の形態における液晶表示素子の製造方法について、図4に基づいて説明する。 A method of manufacturing the liquid crystal display device in the second embodiment of the second embodiment the present invention will be described with reference to FIG. なお、第1 It should be noted that the first
の実施の形態と同一部分は、同一符号を付してその説明を省略する。 Forms the same parts of the embodiment will be omitted given the same reference numerals.

【0019】すなわち、遮光マスク16の透光部19ならびにシール材13を透過した紫外線20が、周囲の物体などに当って反射することにより、液晶表示素子10 [0019] That is, by the light transmitting unit 19 and the ultraviolet 20 that passes through the sealing member 13 of the light shielding mask 16, reflected hitting the like around the object, a liquid crystal display device 10
のガラス基板11側を照射することがあるが、本実施の形態は、このような液晶表示素子10の液晶や配向膜等に照射されるのを防ぐことができる液晶表示素子の製造方法に関するものである。 It is possible to irradiate the glass substrate 11 side, in the present embodiment, a method of manufacturing a liquid crystal display device can be prevented from being irradiated to the liquid crystal and the orientation film or the like of the liquid crystal display device 10 it is.

【0020】液晶表示素子10がカラーパネルの場合、 [0020] When the liquid crystal display element 10 is a color panel,
液晶表示素子10の反紫外線照射側のガラス基板11にカラーフィルターを用いることにより、シール材13を通過した紫外線20の跳ね返りを抑えることができる。 By using a color filter on the glass substrate 11 of the counter-ultraviolet irradiation side of the liquid crystal display device 10, it is possible to suppress the rebound of the ultraviolet 20 passing through the sealing member 13.
しかし、白黒パネルの場合、跳ね返った紫外線20が液晶表示素子10の全面に照射され、液晶材料や配向状態に悪影響を与える。 However, if the black and white panel, it rebounded UV 20 is irradiated on the entire surface of the liquid crystal display device 10, adversely affect the liquid crystal material and alignment state.

【0021】そこで、紫外線20の反照射側のガラス基板11の外面の全面を全面遮光部材25にて覆う。 [0021] Therefore, to cover the entire surface of the outer surface of the glass substrate 11 of the counter-irradiation side of the ultraviolet 20 in a fully light-shielding member 25. 全面遮光部材25は、液晶表示素子10と同じ大きさで、かつ遮光性の材料にて形成されており、特に黒色で反射し難い表面処理が施されたものが好ましい。 Entire light shielding member 25 has the same size as the liquid crystal display device 10, and is formed by light shielding material, it is preferable that in particular, light reflecting hard surface treated with a black has been subjected. 通常、黒色インキで形成すればよいが、遮光率が極めてよくなるように、膜厚などでコントロールする。 Usually, it may be formed with black ink, so that the light blocking ratio is very well be controlled by such thickness.

【0022】このように構成された液晶表示素子の製造方法においても、第1の実施の形態と同様の効果が得られる。 [0022] Also in the manufacturing method of the thus configured liquid crystal display device, the same effect as the first embodiment can be obtained. さらに、全面遮光部材25によって、シール材1 Furthermore, the entire light-shielding member 25, the sealing member 1
3を透過した紫外線20が、跳ね返って液晶表示素子1 3 UV 20 passing through the found rebounded liquid crystal display element 1
0の液晶や配向膜等に照射されるの防ぐことができ、表示品位の優れた液晶表示素子10を得ることができる。 Can be prevented 0 from being irradiated to the liquid crystal and the orientation film or the like, it is possible to obtain an excellent liquid crystal display element 10 of the display quality.
また、定盤などの黒色で反射し難い表面処理が施されたステージからなる全面遮光部材25上に液晶表示素子1 The liquid crystal display device 1 on the whole surface of the light shielding member 25 reflecting hard surface treated with black, such as the surface plate consists of a stage that has been subjected
0を設置し、遮光マスク16を介して上方から紫外線2 0 established, UV from above through the light shielding mask 16 2
0を照射してシール材13を硬化させることもでき、その結果、液晶表示素子10の保持構造が簡単となる。 0 by irradiating can be cured sealant 13, as a result, the holding structure of the liquid crystal display device 10 can be simplified.

【0023】第3の実施の形態 この発明の第3の実施の形態における液晶表示素子の製造方法について、図5に基づいて説明する。 The manufacturing method of the third embodiment of the liquid crystal display device according to the third embodiment of the present invention will be described with reference to FIG. なお、第1 It should be noted that the first
の実施の形態と同一部分は、同一符号を付してその説明を省略する。 Forms the same parts of the embodiment will be omitted given the same reference numerals. この実施の形態は、シール材13のパターンに合わせた遮光マスク16と同様の遮光マスク30を液晶表示素子10の反紫外線照射側にも設けて、2枚の遮光マスク16,30で液晶表示素子10を挟み込むようにしたものである。 This embodiment, the sealing member 13 similar light shielding mask 30 and the light shielding mask 16 to match the pattern of the provided in the anti-ultraviolet irradiation side of the liquid crystal display device 10, a liquid crystal display element in the two light shielding mask 16, 30 it is obtained so as to sandwich a 10. 遮光マスク30は、透光性のガラス基板33の表面に、シール材13に対応する部分を除いて黒色インキ等による遮光膜31を形成したものであり、シール材13を透過した紫外線20は、遮光マスク30の透光部32を透過し、遮光マスク30の表面で反射しない。 Light shielding mask 30, the surface of the transparent glass substrate 33, except for the portion corresponding to the sealing member 13 is obtained by forming a light-shielding film 31 by the black ink or the like, ultraviolet 20 passing through the seal member 13, transmitted through the light transmitting portion 32 of the light shielding mask 30, not reflected by the surface of the light shielding mask 30.

【0024】このように構成された液晶表示素子の製造方法においても、第1の実施の形態と同様の効果が得られる。 [0024] Also in the manufacturing method of the thus configured liquid crystal display device, the same effect as the first embodiment can be obtained. さらに、遮光マスク30によって、シール材13 Furthermore, the light shielding mask 30, the sealing member 13
を透過した紫外線20が、跳ね返って液晶表示素子10 Transmitting ultraviolet 20 is rebounded liquid crystal display device 10
の液晶や配向膜等に照射されるの防ぐことができ、かつ紫外線20が遮光マスク30の表面で反射して液晶表示素子10に進入するのも防ぐことができ、表示品位の優れた液晶表示素子10を得ることができる。 Of it can be prevented from being irradiated to the liquid crystal and the orientation film or the like, and also can prevent the ultraviolet 20 enters the liquid crystal display device 10 is reflected by the surface of the light shielding mask 30, a liquid crystal display with excellent display quality it is possible to obtain an element 10.

【0025】第4の実施の形態 この発明の第4の実施の形態における液晶表示素子の製造方法について、図6に基づいて説明する。 The manufacturing method of the fourth embodiment of the liquid crystal display device according to the fourth embodiment of the present invention will be described with reference to FIG. なお、第1 It should be noted that the first
の実施の形態と同一部分は、同一符号を付してその説明を省略する。 Forms the same parts of the embodiment will be omitted given the same reference numerals. この実施の形態は、液晶表示素子10の側面(ガラス基板11,12のエッジ部)からの紫外線2 This embodiment, ultraviolet rays from the side of the liquid crystal display device 10 (an edge portion of the glass substrate 11, 12) 2
0の回り込みを防止したものである。 0 sneak one in which to prevent the. すなわち、ガラス基板11の外面に全面遮光部材25を設け、かつ液晶表示素子10の側面全体を側面遮光部材35にて覆う。 That is, provided the entire surface light-shielding member 25 to the outer surface of the glass substrate 11, and covers the entire side of the liquid crystal display device 10 in a side shielding member 35. 側面遮光部材35は、定盤の液晶表示素子10の反りを押さえるためのバキューム用の溝や、生地が密である布等にて形成されている。 Side shielding member 35, and grooves for vacuum in order to suppress warpage of the liquid crystal display device 10 of the platen, the fabric is formed by a cloth-tight.

【0026】このように構成された液晶表示素子の製造方法においても、第2の実施の形態と同様の効果が得られる。 [0026] Also in the manufacturing method of the thus configured liquid crystal display device, the same effect as the second embodiment can be obtained. さらに、液晶表示素子10の側面から回り込む紫外線20がほとんどなく、液晶表示素子10の液晶材料や配向膜に影響を与えず、信頼性に優れ、かつ表示品位においても均一でムラのない液晶表示素子が得られる。 Furthermore, ultraviolet 20 is almost no flowing around from the side surface of the liquid crystal display device 10, without affecting the liquid crystal material and the alignment layer of the liquid crystal display device 10, high reliability, and a liquid crystal having no uniform unevenness in display quality display device It is obtained.

【0027】なお、遮光マスク16のみを設けた第1の実施の形態に、前記側面遮光部材35を設け、紫外線2 [0027] Note that the first embodiment is provided only shielding mask 16 is provided with the side light shielding member 35, ultraviolet 2
0の回り込みを防止する構成や、液晶表示素子10の両面に遮光マスク16,30を設けた第3の実施の形態に、前記側面遮光部材35を設け、紫外線20の回り込みを防止する構成としてもよい。 0 wraparound configuration and to prevent of the third embodiment in which a light shielding mask 16, 30 on both sides of the liquid crystal display device 10, the side shielding member 35 is provided, it is configured to prevent the wraparound of the ultraviolet 20 good.

【0028】 [0028]

【発明の効果】請求項1の液晶表示素子の製造方法によれば、紫外線硬化型樹脂からなるシール材を硬化するために照射された紫外線が、シール材以外の液晶や配向膜等に照射されることのないように、遮光マスクによって遮光し、配向乱れやしきい値ムラを起こすことなく、シール材の硬化を円滑に行うことができる。 Effects of the Invention] According to the manufacturing method of the liquid crystal display device according to claim 1, ultraviolet rays are irradiated to cure the sealing material made of an ultraviolet curable resin is irradiated to the liquid crystal and the orientation film other than the sealing material, etc. as no Rukoto, shielded by the light-shielding mask, without causing alignment disturbance or threshold unevenness, can be cured sealant smoothly.

【0029】請求項2の液晶表示素子の製造方法によれば、紫外線硬化型樹脂からなるシール材を硬化するために照射された紫外線が、シール材以外の液晶や配向膜等に照射されることのないように、遮光マスクによって遮光し、配向乱れやしきい値ムラを起こすことなく、シール材の硬化を円滑に行うことができる。 According to the manufacturing method of the liquid crystal display device according to claim 2, the UV irradiated to cure the sealing material made of an ultraviolet curable resin is irradiated to the liquid crystal and the orientation film or the like other than the sealing material as no, then blocked by the light blocking mask, without causing alignment disturbance or threshold unevenness, can be cured sealant smoothly. さらに、シール材を透過した紫外線が、跳ね返って液晶表示素子に入射するのを、全面遮光部材にて防ぐことができる。 Furthermore, ultraviolet light that has passed through the sealing material, from entering rebounded on the liquid crystal display device can be prevented by the entire surface light-shielding member.

【0030】請求項3の液晶表示素子の製造方法によれば、紫外線硬化型樹脂からなるシール材を硬化するために照射された紫外線が、シール材以外の液晶や配向膜等に照射されることのないように、遮光マスクによって遮光し、配向乱れやしきい値ムラを起こすことなく、シール材の硬化を円滑に行うことができる。 According to the manufacturing method of the liquid crystal display device according to claim 3, the ultraviolet rays irradiated to cure the sealing material made of an ultraviolet curable resin is irradiated to the liquid crystal and the orientation film or the like other than the sealing material as no, then blocked by the light blocking mask, without causing alignment disturbance or threshold unevenness, can be cured sealant smoothly. さらに、シール材を透過した紫外線が、跳ね返って液晶表示素子に入射するのを、反紫外線照射側の遮光マスクにて防ぐことができる。 Furthermore, ultraviolet light that has passed through the sealing material, from entering the liquid crystal display device rebound, can be prevented by anti-ultraviolet irradiation side of the light-shielding mask.

【0031】請求項4の液晶表示素子の製造方法によれば、液晶表示素子の側面から紫外線が回り込んで入射するのを、側面遮光部材にて防ぐことができる。 According to the manufacturing method of the liquid crystal display device according to claim 4, from entering wraps around ultraviolet from the side of the liquid crystal display device can be prevented in a side shielding member. 以上の結果、信頼性ならびに表示品位に優れた液晶表示素子を製造することができる。 As a result, it is possible to manufacture a liquid crystal display device having excellent reliability and display quality. また、紫外線を遮光する遮光マスク,全面遮光部材,側面遮光部材を設置するだけであるから、プロセス導入が円滑に行え、設備費も安価である。 The light shielding mask for shielding ultraviolet, entire shielding member, since only installing the side light-shielding member, the process introduced smoothly performed, equipment cost is also inexpensive. しかも、紫外線硬化型のシール材を用いた滴下工法で、大量生産に適合した形で導入することができるので、インライン化やタクト時間が短く、効率的な作業が可能となる。 Moreover, a dropping method using an ultraviolet-curing sealant, it is possible to introduce a form adapted for mass production, inline and tact time is short, thereby enabling efficient work. この工程が確立できることにより、滴下工法の効果がさらに活用され、大きいサイズの液晶パネルやセルギャップの狭い液晶表示素子でも、作業時間が同じで、かつ所要時間は真空注入工法に比べ1/10程度となる。 By this process can be established, the effect of dropping process is further utilized, even in a narrow liquid crystal display device having a liquid crystal panel and the cell gap of a large size, the work time is the same, and about 1/10 compared to the time required vacuum injection method to become.

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

【図1】この発明の第1の実施の形態における液晶表示素子の製造工程図である。 1 is a manufacturing process diagram of the liquid crystal display device according to the first embodiment of the present invention.

【図2】この発明の第1の実施の形態における液晶表示素子のシール材のパターン図である。 2 is a pattern diagram of a sealing material of a liquid crystal display device according to the first embodiment of the present invention.

【図3】この発明の第1の実施の形態における遮光マスクのパターン図である。 3 is a pattern diagram of a light-shielding mask in the first embodiment of the present invention.

【図4】この発明の第2の実施の形態における液晶表示素子の製造工程図である。 4 is a manufacturing process diagram of the liquid crystal display device according to the second embodiment of the present invention.

【図5】この発明の第3の実施の形態における液晶表示素子の製造工程図である。 5 is a manufacturing process diagram of the liquid crystal display device according to the third embodiment of the present invention.

【図6】この発明の第4の実施の形態における液晶表示素子の製造工程図である。 6 is a manufacturing process diagram of the liquid crystal display device according to the fourth embodiment of the present invention.

【図7】液晶材料の真空注入法の説明図である。 7 is an explanatory view of a vacuum injection method of the liquid crystal material.

【図8】液晶材料の滴下工法の説明図である。 8 is an explanatory view of the dropping process of the liquid crystal material.

【符号の説明】 DESCRIPTION OF SYMBOLS

10 液晶表示素子 11,12 ガラス基板 13 シール材 16,30 遮光マスク 25 全面遮光部材 35 側面遮光部材 10 liquid crystal display elements 11 and 12 the glass substrate 13 sealant 16, 30 light-shielding mask 25 entirely shielding member 35 side shielding member

───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 聡 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 Satoshi Yamada Osaka Prefecture Kadoma Oaza Kadoma 1006 address Matsushita Electric industrial Co., Ltd. in

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 一対の透明基板のいずれか一方の対向面に液晶材料を滴下する工程と、一方の透明基板の対向面に紫外線硬化型のシール材を塗布する工程と、前記一対の透明基板を貼り合わせる工程と、一方の透明基板の外面に前記シール材に対応する部分を残して遮光可能な遮光マスクを配置する工程と、前記遮光マスクの外面から紫外線を照射して前記シール材を硬化させる工程とを含む液晶表示素子の製造方法。 A step to 1. A one of the opposing surfaces or a pair of transparent substrates dropping the liquid crystal material, a step of applying an ultraviolet-curing sealing material to the opposite surface of the one transparent substrate, the pair of transparent substrates curing the step of bonding, a step of arranging the light-shielding mask can be shielding leaving a portion corresponding to the sealing material to the outer surface of one transparent substrate, the sealing material by irradiating ultraviolet rays from the outer surface of said light-shielding mask method of manufacturing a liquid crystal display device including the step of.
  2. 【請求項2】 一対の透明基板のいずれか一方の対向面に液晶材料を滴下する工程と、一方の透明基板の対向面に紫外線硬化型のシール材を塗布する工程と、前記一対の透明基板を貼り合わせる工程と、一方の透明基板の外面に前記シール材に対応する部分を残して遮光可能な遮光マスクを配置する工程と、他方の透明基板の外面に基板全面を遮光可能な全面遮光部材を配置する工程と、前記遮光マスクの外面から紫外線を照射して前記シール材を硬化させる工程とを含む液晶表示素子の製造方法。 A step to wherein one of the opposing surfaces or a pair of transparent substrates dropping the liquid crystal material, a step of applying an ultraviolet-curing sealing material to the opposite surface of the one transparent substrate, the pair of transparent substrates a step of bonding, one placing a light shielding possible shielding mask leaving a portion corresponding to the sealing material to the outer surface of the transparent substrate, the entire surface of the light shielding member capable of shielding the entire surface of the substrate to the outer surface of the other transparent substrate disposing a manufacturing method of a liquid crystal display device including the step of curing the sealing material by irradiating ultraviolet rays from the outer surface of said light-shielding mask.
  3. 【請求項3】 一対の透明基板のいずれか一方の対向面に液晶材料を滴下する工程と、一方の透明基板の対向面に紫外線硬化型のシール材を塗布する工程と、前記一対の透明基板を貼り合わせる工程と、各透明基板の外面にそれぞれ前記シール材に対応する部分を残して遮光可能な一対の遮光マスクを配置する工程と、一方の遮光マスクの外面から紫外線を照射して前記シール材を硬化させる工程とを含む液晶表示素子の製造方法。 3. A step of dropping a liquid crystal material on one of the opposed surfaces one of the pair of transparent substrates, a step of applying an ultraviolet-curing sealing material to the opposite surface of the one transparent substrate, the pair of transparent substrates a step of bonding, a step of arranging the respective pair of light-shielding mask can be shielding leaving a portion corresponding to the sealing material to the outer surfaces of the transparent substrate, the sealing by irradiating ultraviolet rays from the outer surface of one of the light shielding mask method of manufacturing a liquid crystal display device and curing the wood.
  4. 【請求項4】 液晶表示素子の側面を側面遮光部材にて遮光した状態で紫外線を照射することを特徴とする請求項1,2または3記載の液晶表示素子の製造方法。 4. A method for manufacturing a liquid crystal display device according to claim 1, 2 or 3, wherein applying ultraviolet light while shielding the side surfaces of the liquid crystal display element in a side shielding member.
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