JPH03228025A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH03228025A JPH03228025A JP2023095A JP2309590A JPH03228025A JP H03228025 A JPH03228025 A JP H03228025A JP 2023095 A JP2023095 A JP 2023095A JP 2309590 A JP2309590 A JP 2309590A JP H03228025 A JPH03228025 A JP H03228025A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- moisture
- display device
- crystal display
- proof film
- 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.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract 2
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 210000002858 crystal cell Anatomy 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 4
- 239000004988 Nematic liquid crystal Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 239000011630 iodine Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は液晶表示装置：：１系ねり、詳しくは耐湿性向
上にに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a liquid crystal display device::1 system, and specifically to improving moisture resistance.
［従来の技術］ 従来の液晶表示装置の構造を第２図を用いて説明する。[Conventional technology] The structure of a conventional liquid crystal display device will be explained using FIG. 2.
透明電極が内面に形成された一対の透明基板１゜２をシ
ール材３を介して挟持し、その間にネマチック液晶４等
を封入して液晶セルを構成し、さらに該液晶セルの少な
くとも片面に偏光板５（または偏光板６）を配置した構
造をしている。A pair of transparent substrates 1゜2 with transparent electrodes formed on their inner surfaces are sandwiched through a sealing material 3, and a nematic liquid crystal 4 etc. is sealed between them to form a liquid crystal cell, and at least one side of the liquid crystal cell is provided with polarized light. It has a structure in which a plate 5 (or a polarizing plate 6) is arranged.
［発明が解決しようとする課題］
前述の従来技術による構造を有する液晶表示装置を屋外
で使用すると高温多湿の環境下においては偏光板が脱色
したり、ガラス等の透明基板から剥離してしまうという
問題点を有していた。[Problems to be Solved by the Invention] When a liquid crystal display device having the structure according to the prior art described above is used outdoors, the polarizing plate may discolor or peel off from a transparent substrate such as glass in a hot and humid environment. It had some problems.
例えば、染料系の高耐久性の偏光板を使用しても８０°
Ｃ−９０％という耐湿試験を行うと５００〜６００時間
後に著しい劣化を示すのであ；５．そこで、本発明はこ
のような問題点を解決すべくなされたものてあり、その
目的とするところは高温茶温の環境下ても長詩間の使用
に耐える液晶表示装置を提供することにある。For example, even if a highly durable dye-based polarizing plate is used, the
When a moisture resistance test of C-90% is performed, significant deterioration occurs after 500 to 600 hours; 5. Therefore, the present invention has been made to solve these problems, and its purpose is to provide a liquid crystal display device that can withstand use for long periods of time even in a high tea temperature environment. .
［課題を解決するための手段］
本発明の液晶表示装置は、電極を設けた基板間に湾晶層
を挟持し、液晶セルの少なくとも片面に偏光板を備えた
液晶表示装置において、該偏光積上を被覆するように防
湿膜を設けたことを特徴とする。[Means for Solving the Problems] The liquid crystal display device of the present invention is a liquid crystal display device in which a curved crystal layer is sandwiched between substrates provided with electrodes, and a polarizing plate is provided on at least one side of a liquid crystal cell. It is characterized in that a moisture-proof membrane is provided to cover the top.
［実施例］
本発明による液晶表示装置の構造を第１０に示す。第１
図において、１及び２は透明電極が形成されたガラス基
板であり、これらをシール材３（：よって接着し、その
間にネマチック濠晶４を封入しである。５及び６は偏光
板であり、こららの偏光板を被覆するように防湿膜７．
８が形成されている。[Example] The structure of a liquid crystal display device according to the present invention is shown in a tenth example. 1st
In the figure, 1 and 2 are glass substrates on which transparent electrodes are formed, and these are bonded with a sealing material 3 (therefore, a nematic moat crystal 4 is sealed between them. 5 and 6 are polarizing plates, 7. Apply a moisture-proof film to cover these polarizing plates.
8 is formed.
［実施例１コ
偏光板として、ヨウ素系の通常の耐湿性を有する偏光板
を使用し、防湿膜として透明なポリウレタン樹脂をスプ
レーガンにより、厚さ０．５ｍｍ程度に塗布した。なお
、乾燥は６０°Ｃて６０分間行った。[Example 1] An iodine-based polarizing plate having normal moisture resistance was used as a polarizing plate, and a transparent polyurethane resin was applied as a moisture-proof film to a thickness of about 0.5 mm using a spray gun. Note that drying was performed at 60°C for 60 minutes.
［実施例２］
偏光板として、ヨウ素系の通常の耐湿性を有する偏光板
を使用し、防湿膜として透明なアクリル樹脂スプレーガ
ン：こより、厚さ０ 、５ ｍｍ程度に塗布した。なお
、６０°Ｃて６０分間の乾燥を行った。[Example 2] An iodine-based polarizing plate having normal moisture resistance was used as a polarizing plate, and a moisture-proof film was applied to a thickness of about 0.5 mm using a transparent acrylic resin spray gun. Note that drying was performed at 60°C for 60 minutes.
【実施例３コ
偏光板として、ヨウ素系の通常の耐湿性を有する偏光板
を使用し、防湿膜として透明なエポキシ樹脂をスプレー
ガンにより、厚さ０ 、５ ｍｍ程度に塗布した。乾燥
条件は６０°Ｃて６０分間で行った。Example 3 An iodine-based polarizing plate having normal moisture resistance was used as a polarizing plate, and a transparent epoxy resin was applied as a moisture-proof film to a thickness of about 0.5 mm using a spray gun. Drying conditions were 60°C for 60 minutes.
［実施例４］
偏光板として、染料系の高耐湿性を有する偏光板を使用
し、防湿膜として透明なエポキシ樹脂をスプレーガンに
より、厚さ０ 、５ ｍｍ程度に塗布した。[Example 4] A dye-based polarizing plate having high moisture resistance was used as a polarizing plate, and a transparent epoxy resin was applied as a moisture-proof film to a thickness of about 0.5 mm using a spray gun.
乾燥条件は６０°Ｃで６０分間行った。Drying conditions were 60°C for 60 minutes.
ここで、上記各実施例と防湿膜が形成されない従来の構
造の液晶表示装置を、８０°Ｃ−９０％の耐湿試験を行
い偏光板の劣化程度を比較した。なお、偏光板の劣化の
判定基準は、
初期透過率の１０％の変
化がみられた時間とした。Here, a moisture resistance test was conducted at 80° C.-90% for each of the above-described examples and a liquid crystal display device having a conventional structure in which no moisture-proof film was formed, and the degree of deterioration of the polarizing plate was compared. The criterion for determining the deterioration of the polarizing plate was the time at which a 10% change in initial transmittance was observed.
その結果を表１に示す。The results are shown in Table 1.
表１から明らかなように、ヨウ素系の偏光板に対しても
染料系の偏光板に対しても防湿膜の効果があられれてい
る。また、エポキシ樹脂の耐湿性が最もよいともいえる
。As is clear from Table 1, the moisture-proof film is effective for both iodine-based polarizing plates and dye-based polarizing plates. It can also be said that epoxy resin has the best moisture resistance.
次に、実施例１〜３について有機溶剤による耐薬品性を
調べた。その結果を表２に示す。なお、試験方法として
は、木綿布にエタノール、トリエタン、アセトンを各々
しみこませて１０回こすり、防湿膜の変化を観察した。Next, the chemical resistance of Examples 1 to 3 to organic solvents was investigated. The results are shown in Table 2. In addition, as a test method, a cotton cloth was impregnated with each of ethanol, triethane, and acetone and rubbed 10 times, and changes in the moisture-proof film were observed.
表２より防湿膜の有機溶剤に対する耐薬品性としてはエ
ポキシ樹脂が最もよいことがわかった。From Table 2, it was found that epoxy resin was the best in terms of chemical resistance of the moisture-proof film to organic solvents.
さらに、鉛筆硬度試験を行ったところ、ポリウレタン樹
脂はＨＢまで、アクリル樹脂はＩＨまて、エポキシ樹脂
は２Ｈまではきすがっかなかった。Furthermore, when a pencil hardness test was conducted, polyurethane resins did not scratch up to HB, acrylic resins did not scratch up to IH, and epoxy resins did not scratch up to 2H.
以上の耐湿試験（表１）、耐薬品性試験（表２）と鉛筆
硬度試験より、防湿膜としてはエポキシ樹脂が最も優れ
ているといえる。From the above moisture resistance test (Table 1), chemical resistance test (Table 2), and pencil hardness test, it can be said that epoxy resin is the most excellent moisture-proof film.
［実施ρｊ５コ
エポキシ樹脂に紫外線吸収剤を添加すること：二より、
防湿膜自体の耐光性と偏光板の耐光性を向上させること
ができに０
［実施例６］
偏光板上にエポキシ樹脂で防湿膜を形成することにより
、鉛筆硬度で２Ｈ程度のハードコート効果が得られた。[Practice ρj5 Adding a UV absorber to the coepoxy resin: From 2,
The light resistance of the moisture-proof film itself and the light resistance of the polarizing plate can be improved. [Example 6] By forming a moisture-proof film with epoxy resin on the polarizing plate, a hard coat effect with a pencil hardness of about 2H can be achieved. Obtained.
なお、防４ＦＪの塗布方法としてはスプレーガンによる
塗布以外にもスクリーン印刷等の印刷法でもよい。また
、−軸性ＰＥＴ等のフィルム基板を用いた液晶表示装置
にも同様に防湿膜を形成てき［発明の効果］
以上述べたように、本発明によれば液晶表示装置の耐湿
性を大幅に向上させることができ、従って高温多湿の環
境下や、さらには偏光板上にハードコート性の防湿膜を
形成するので、液晶表示装置に１国がつきにくいという
効果も有する。In addition, as a method of applying the anti-4FJ, a printing method such as screen printing may be used instead of applying with a spray gun. Furthermore, a moisture-proof film can be similarly formed on a liquid crystal display device using a film substrate such as -axial PET. [Effects of the Invention] As described above, according to the present invention, the moisture resistance of a liquid crystal display device can be greatly improved. Therefore, since a hard-coat moisture-proof film is formed on a polarizing plate in a high-temperature and humid environment, it also has the effect of making it difficult for liquid crystal display devices to be used in a single country.
第１図は、本発明による液晶表示装置の一実施例示す図
。
第２図は、従来の液晶表示装置の構造を示す図。
１．２・・・透明基板、 ３・・・シール材４・・
・液晶、５，６・・・偏光板、 ７，８・・・防湿膜
以 上FIG. 1 is a diagram showing an embodiment of a liquid crystal display device according to the present invention. FIG. 2 is a diagram showing the structure of a conventional liquid crystal display device. 1.2...Transparent substrate, 3...Sealing material 4...
・Liquid crystal, 5, 6...polarizing plate, 7, 8...moisture-proof film or higher
Claims (5)
の少なくとも片面に偏光板を備えた液晶表示装置におい
て、該偏光板上を被覆するように防湿膜を設けたことを
特徴とする液晶表示装置。(1) A liquid crystal display device comprising a liquid crystal layer sandwiched between substrates provided with electrodes and a polarizing plate on at least one side of the liquid crystal cell, characterized in that a moisture-proof film is provided to cover the polarizing plate. LCD display device.
特徴とする請求項１記載の液晶表示装置。(2) The liquid crystal display device according to claim 1, wherein the moisture-proof film is made of transparent epoxy resin.
とする請求項１記載の液晶表示装置。(3) The liquid crystal display device according to claim 1, wherein the moisture-proof film is formed by a coating method.
とする請求項１記載の液晶表示装置。(4) The liquid crystal display device according to claim 1, wherein the moisture-proof film has an ultraviolet absorption effect.
徴とする請求項１記載の液晶表示装置。(5) The liquid crystal display device according to claim 1, wherein the moisture-proof film has a hard coat effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023095A JPH03228025A (en) | 1990-02-01 | 1990-02-01 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023095A JPH03228025A (en) | 1990-02-01 | 1990-02-01 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03228025A true JPH03228025A (en) | 1991-10-09 |
Family
ID=12100884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023095A Pending JPH03228025A (en) | 1990-02-01 | 1990-02-01 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03228025A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6930748B2 (en) * | 2000-12-29 | 2005-08-16 | Lg.Philips Lcd Co., Ltd. | Liquid crystal display device and method for manufacturing the same |
-
1990
- 1990-02-01 JP JP2023095A patent/JPH03228025A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6930748B2 (en) * | 2000-12-29 | 2005-08-16 | Lg.Philips Lcd Co., Ltd. | Liquid crystal display device and method for manufacturing the same |
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