JPS5826005B2 - liquid crystal display device - Google Patents
liquid crystal display deviceInfo
- Publication number
- JPS5826005B2 JPS5826005B2 JP55161886A JP16188680A JPS5826005B2 JP S5826005 B2 JPS5826005 B2 JP S5826005B2 JP 55161886 A JP55161886 A JP 55161886A JP 16188680 A JP16188680 A JP 16188680A JP S5826005 B2 JPS5826005 B2 JP S5826005B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display device
- crystal display
- film
- alignment
- 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.)
- Expired
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 21
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 239000004695 Polyether sulfone Substances 0.000 claims description 8
- 229920006393 polyether sulfone Polymers 0.000 claims description 8
- 229920000412 polyarylene Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004988 Nematic liquid crystal Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- -1 etc. Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Description
【発明の詳細な説明】
本発明は液晶表示装置に関して平行配列型装置の電極基
板の改良に関するもので、液晶の配向制御膜として特定
のポリアリレンポリエーテルサルホン樹脂を主材とする
ことを特徴とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the electrode substrate of a parallel arrangement type device in relation to a liquid crystal display device, and the present invention relates to an improvement in the electrode substrate of a parallel arrangement type device in relation to a liquid crystal display device. This is a characteristic feature.
従来、表示装置の省力化、ポータプル化をごついて液晶
の光学的利用分野が広まり、当初は負の誘電異方性をも
つネマチック液晶を用い、電場をかけること（こよるダ
イナミック・スキャタリング（Ｄｙｎａｍｉｃ Ｓｃａ
ｔｔｅｒｉｎｇ）効果を利用したＤＳ型表示装置が用い
られた。Conventionally, the field of optical use of liquid crystals has expanded due to labor-saving and portable display devices, and initially, nematic liquid crystals with negative dielectric anisotropy were used and electric fields were applied (dynamic scattering). Sca
A DS type display device utilizing the tttering effect was used.
しかし、より動作電圧が低く、表示機能向上のためにツ
ィステッドネマチック（Ｔｗｉｓｔｅｄ Ｎｅｍａｔｉ
ｃ） 表示装置（ＴＮ型表示装置）に改良された。However, the operating voltage is lower and the display function is improved by using twisted nematic (Twisted Nematic).
c) Improved display device (TN type display device).
このＴＮ型表示装置では、動作原理上および表示機能を
高めるために液晶分子をホモジニアス（平行）に、均一
に配向させることが重要であるが、従来、液晶に初期配
向を与える手段として、ラビング、界面活性剤塗布、酸
化けい素などの斜蒸着、有機高分子膜などが応用された
。In this TN type display device, it is important to orient liquid crystal molecules homogeneously (parallel) and uniformly in order to improve the operating principle and display function. Conventionally, rubbing, Applications included surfactant coating, oblique vapor deposition of silicon oxide, and organic polymer films.
しかし、ラビングによる配向処理では完全な配向は得ら
れず広い範囲にわたる均一性も劣るため、１ｃＴＬ以上
の面積を有する装置になると装置全体にわたって均一な
電気光学的応答を示すことが困難で、同一装置内での動
作電圧の差を生じ、良好なコントラストが得られぬこと
で電気光学的特性が悪くなる。However, alignment treatment by rubbing does not provide perfect alignment and is poor in uniformity over a wide range, so when a device has an area of 1 cTL or more, it is difficult to show a uniform electro-optic response over the entire device, and the same device This causes a difference in operating voltage between the layers, making it impossible to obtain good contrast and deteriorating the electro-optical characteristics.
電極面の研摩に大きな力を必要とし作業上の難点のみら
れる欠点があった。This method had the disadvantage of requiring a large amount of force to polish the electrode surface, making it difficult to work with.
また、界面活性剤を併用して電極基板をラビングする方
法は、界面活性剤が液晶の劣化を引き起こし、さらに電
界の印加をしつづけると、界面活性剤が分解、変質を起
こし液晶の配向をなくすす。In addition, in the method of rubbing the electrode substrate using a surfactant, the surfactant causes deterioration of the liquid crystal, and if the electric field continues to be applied, the surfactant decomposes and changes in quality, causing the liquid crystal to lose its orientation. vinegar.
また、酸化けい素などの斜蒸着は、基板上に５００λ〜
３，０００人の透明電極があるのでこの側端部が陰とな
って斜着されない部分が出てくるので、電極側端部に配
向の乱れを生じ、表示機能が悪くなることや、大型素子
の作成が困難であり、一枚の基板から多くの素子を作成
することは難しく、バッチ方式となる欠点を生じた。In addition, oblique vapor deposition of silicon oxide, etc.
Since there are 3,000 transparent electrodes, this side edge becomes a shadow and there is a part that is not diagonally attached, resulting in disordered orientation at the electrode side edge, resulting in poor display function and large elements. It is difficult to fabricate many devices from a single substrate, resulting in the disadvantage of requiring a batch method.
また、使用する液晶の種類によって配向に大きな差があ
り、各種の液晶を混合して使用する場合には障害が生じ
た。Furthermore, there is a large difference in alignment depending on the type of liquid crystal used, and problems arise when using a mixture of various liquid crystals.
一方、有機高分子膜を配向膜として用いる方法は、その
耐久性から見て有利であるが、従来からあるポリビニル
アルコール、ポリアクリロニトリルなどの膜は、ラビン
グ効果の耐熱性が低く、そのため素子組み立て時の加熱
や封着封止剤の影響により配向性が不均一であり、この
性態熱性の良いポリアミド系の配向膜の黄褐色の着色が
あること、尿素樹脂、フェノール樹脂、フッ素樹脂の配
向膜は、液晶分子の配向性、透明度、直流電圧の印加さ
れた場合の特性が劣り、いずれも実用上の欠点のためい
ま一歩の改善が望まれていた。On the other hand, the method of using an organic polymer film as an alignment film is advantageous in terms of its durability, but conventional films such as polyvinyl alcohol and polyacrylonitrile have low heat resistance due to the rubbing effect, so when assembling the device. Due to the effects of heating and sealing agents, the orientation is uneven, and the alignment film made of polyamide, which has good thermal properties, has a yellowish brown color.Alignment films made of urea resin, phenol resin, and fluorine resin The liquid crystal molecules have poor orientation, transparency, and properties when a DC voltage is applied, all of which have practical drawbacks, so further improvements have been desired.
※※ 最近では、これらの
欠点の改善のため、特開昭５４−６８６５６等にポリエ
ーテルサルホンからなる液晶表示装置が提案されている
。**Recently, in order to improve these drawbacks, a liquid crystal display device made of polyether sulfone has been proposed in Japanese Patent Application Laid-Open No. 54-68656.
しかしながらこのものは耐候性、吸水率、熱伝導率、光
学的性質などに欠点があり、そのために高温、高湿下で
長時間電圧印加後の液晶安定性に問題があり、液晶表示
装置として改良を望まれるものであった。However, this device has drawbacks in weather resistance, water absorption, thermal conductivity, optical properties, etc., and as a result, there is a problem with liquid crystal stability after applying voltage for a long time under high temperature and high humidity, so it was improved as a liquid crystal display device. was desired.
本発明者らは、上述の欠点の解決に研究した結果、高分
子膜として、下記の特定の構造式のポリアリレンポリエ
ーテルサルホン樹脂を主材として液晶配向膜ならびに絶
縁膜として用いる液晶表示装置を提供するものである。As a result of research to solve the above-mentioned drawbacks, the present inventors have discovered that a liquid crystal display using a polyarylene polyether sulfone resin having the specific structural formula below as a main material as a polymer film as a liquid crystal alignment film and an insulating film. It provides equipment.
その構造式は、で示される樹脂で、たとえば特公昭４２
−７７９９号に記載されているようなものである。Its structural formula is a resin shown by, for example,
-7799.
本発明に用いる樹脂は、非晶質で透明性に秀れ、電気絶
縁性、耐湿性、耐熱性に秀れそのために、ガラス基板上
に、本願の特定のポリアリレンポリエーテルサルホン樹
脂溶威を浸漬、塗布または吹付は等の方法によって膜状
物を形成させ、ラビングによる液晶の配向効果を高め、
基板の電極形成面の絶縁膜となるために表示装置の透明
度、耐直流性を向上させた。The resin used in the present invention is amorphous and has excellent transparency, and has excellent electrical insulation, moisture resistance, and heat resistance. A film-like material is formed by dipping, coating, or spraying, and the alignment effect of liquid crystal is enhanced by rubbing.
Since it serves as an insulating film on the electrode-forming surface of the substrate, it improves the transparency and direct current resistance of the display device.
耐久性や耐水性に関する本発明に係る特定のポリアリレ
ンポリエーテルサルホン樹脂の最適重合度は２０〜２０
０の範囲となる。The optimum degree of polymerization of the specific polyarylene polyether sulfone resin according to the present invention regarding durability and water resistance is 20 to 20.
The range is 0.
重合度が２０以下の場合は上述の物性はかならずしも十
分でなく、２００以上の場合には製膜の作業性に劣る。When the degree of polymerization is 20 or less, the above-mentioned physical properties are not necessarily sufficient, and when it is 200 or more, the workability of film formation is poor.
本発明に係る特定のポリアリレンポリエーテルサルホン
樹脂の溶剤として、単独溶剤には、塩化メチレン、クロ
ロホルム、シクロ・ヘキサノン、クロルベンゼン、ジメ
チルホルムアミド、ジクロルメタン、テトラヒドロフラ
ンなど、混合溶剤としテハ、トルエン／シクロヘキサノ
ン、トルエン／アセトン、キシレン／シクロ・ヘキサノ
ン等をあげることができるが、引火性、爆発性、揮発性
、製膜性を考慮すると取扱い上、特に塩化メチレンおよ
びクロロホルムが好ましく使用される。As a solvent for the specific polyarylene polyether sulfone resin according to the present invention, single solvents include methylene chloride, chloroform, cyclohexanone, chlorobenzene, dimethylformamide, dichloromethane, tetrahydrofuran, etc., and mixed solvents such as teha, toluene/ Examples include cyclohexanone, toluene/acetone, xylene/cyclohexanone, etc., but in view of flammability, explosiveness, volatility, and film-forming properties, methylene chloride and chloroform are particularly preferably used for handling reasons.
実施例
所定パターンの電極が形成されたガラス基板上全面に、
ポリアリレンポリエーテルサルホン樹脂（ユニオンカー
バイト社製Ｐ−１７００ＵＤＥＬ＠）の０．５重量％ク
ロロホルム溶成をスピンナーで塗布する。Example: A glass substrate with a predetermined pattern of electrodes formed on the entire surface.
A 0.5% by weight chloroform solution of polyarylene polyether sulfone resin (P-1700UDEL@ manufactured by Union Carbide) is applied using a spinner.
そして大気中で自然乾燥させ０．５〜１μの配向膜なら
びに絶縁膜を形成し、この膜の表面（こラビングによる
配向処理を施した２枚の電極基板間に、正の誘電異方性
をもつビフェニル系のネマチック液晶を注入し周囲をエ
ポキシ系接着剤で封止する。Then, an alignment film and an insulating film with a thickness of 0.5 to 1μ are formed by air drying in the air, and a positive dielectric anisotropy is formed on the surface of this film (between two electrode substrates that have been subjected to alignment treatment by rubbing). A biphenyl-based nematic liquid crystal is injected and the surrounding area is sealed with epoxy adhesive.
この方法により製造した液晶表示装置は、液晶の配向性
は良好で均一であり、また、使用したポリマーは、ガラ
ス基板との密着性が良く、接触する液晶と化学的に安定
であり、エポキシ系接着剤による悪影響もなく、長時間
安定であった。In the liquid crystal display device manufactured by this method, the alignment of the liquid crystal is good and uniform, and the polymer used has good adhesion to the glass substrate, is chemically stable with the liquid crystal in contact, and is based on epoxy. There were no adverse effects from the adhesive and it was stable for a long time.
比較例
上記実施例と同様な方法でポリエーテルサルホン樹脂（
１，Ｃ，Ｉ社製２００Ｐ 、３００Ｐ）を用いて、０．
５μ〜１μの配向膜および絶縁膜を作成し、サンシャイ
ンウェザ−メーター（ＷＥＬ−３ＵＮＨＣ型、スガ試験
機）の試験では、機械的強度の低下率は、ＵＤＥ沙Ｐ−
１７００の１０倍以上の速さであり、透過率の減少も、
２〜３倍の速さで進行していた。Comparative Example A polyether sulfone resin (
1, C, I using 200P, 300P), 0.
An alignment film and an insulating film with a thickness of 5μ to 1μ were created and tested using a Sunshine Weather Meter (WEL-3UNHC model, Suga Test Instruments).
It is more than 10 times faster than 1700, and the transmittance decreases as well.
It was progressing 2-3 times faster.
また、吸水率を２３℃、２４時間後に測定したが（ＡＳ
ＴＭ−Ｄ−５７０に従う）、ポリエーテルポリサルホン
（２００Ｐ、３００Ｐ）は、０．５％で、ＵＤＥＬ■Ｐ
−１７００は、０．２％で、飽和吸水率も前者が１．８
％、後者が０．６２％で、高湿下で長時間連続電圧印加
後の内部の蔽晶安定耐久性に大きな差があった。In addition, the water absorption rate was measured after 24 hours at 23°C (AS
TM-D-570), polyether polysulfone (200P, 300P) at 0.5%, UDEL■P
-1700 is 0.2%, and the saturated water absorption rate is 1.8.
%, the latter being 0.62%, and there was a large difference in internal crystal stability durability after long-term continuous voltage application under high humidity.
また熱伝導率は（ＡＳＴＭ−Ｃ−１７７に従う）ポリエ
ーテルサルホン（２００Ｐ、３００Ｐ）は、４３Ｘ１０
−’ｃａｌ／ｓｅｃ ｃｍ’ｃであるのに対して、本願
に係るＵＤＥ饅Ｐ−１７００は２．８ Ｘ Ｉ Ｏ−’
ｃａ１１５ｅ。Thermal conductivity (according to ASTM-C-177) of polyether sulfone (200P, 300P) is 43X10
-'cal/sec cm'c, whereas UDE Man P-1700 according to the present application is 2.8 X I O-'
ca115e.
ｃｍ’Ｃで熱的性質に秀れ配向むらがなく、従って高温
での長期の成品安定性は本願の方が極めて秀れているこ
とが判明した。It was found that the present invention has excellent thermal properties at cm'C and no uneven orientation, and therefore has extremely superior long-term product stability at high temperatures.
Claims (1)
造式で示される特定のポリアリレンポリエーテルサルホ
ン樹脂を主材とする液晶表示装置。1. A liquid crystal display device whose main material is a specific polyarylene polyether sulfone resin represented by the following structural formula as a liquid crystal alignment control film and an insulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55161886A JPS5826005B2 (en) | 1980-11-19 | 1980-11-19 | liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55161886A JPS5826005B2 (en) | 1980-11-19 | 1980-11-19 | liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5786819A JPS5786819A (en) | 1982-05-31 |
| JPS5826005B2 true JPS5826005B2 (en) | 1983-05-31 |
Family
ID=15743853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55161886A Expired JPS5826005B2 (en) | 1980-11-19 | 1980-11-19 | liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826005B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6168213U (en) * | 1984-10-09 | 1986-05-10 | ||
| JPS61170710A (en) * | 1985-01-24 | 1986-08-01 | Mitsubishi Rayon Co Ltd | Plastic optical fiber |
| JPS61184512A (en) * | 1985-02-13 | 1986-08-18 | Mitsubishi Rayon Co Ltd | Plastic optical fiber cable |
| JPS61185708A (en) * | 1985-02-14 | 1986-08-19 | Mitsubishi Rayon Co Ltd | Plastic optical fiber cable |
-
1980
- 1980-11-19 JP JP55161886A patent/JPS5826005B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6168213U (en) * | 1984-10-09 | 1986-05-10 | ||
| JPS61170710A (en) * | 1985-01-24 | 1986-08-01 | Mitsubishi Rayon Co Ltd | Plastic optical fiber |
| JPS61184512A (en) * | 1985-02-13 | 1986-08-18 | Mitsubishi Rayon Co Ltd | Plastic optical fiber cable |
| JPS61185708A (en) * | 1985-02-14 | 1986-08-19 | Mitsubishi Rayon Co Ltd | Plastic optical fiber cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5786819A (en) | 1982-05-31 |
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