JPH0711638B2 - Liquid crystal display alignment substrate - Google Patents
Liquid crystal display alignment substrateInfo
- Publication number
- JPH0711638B2 JPH0711638B2 JP60290750A JP29075085A JPH0711638B2 JP H0711638 B2 JPH0711638 B2 JP H0711638B2 JP 60290750 A JP60290750 A JP 60290750A JP 29075085 A JP29075085 A JP 29075085A JP H0711638 B2 JPH0711638 B2 JP H0711638B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- substrate
- fluorine
- film
- containing polymer
- 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 - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 35
- 239000000758 substrate Substances 0.000 title claims description 31
- 229920001721 polyimide Polymers 0.000 claims description 22
- 239000004642 Polyimide Substances 0.000 claims description 18
- 229910052731 fluorine Inorganic materials 0.000 claims description 16
- 239000011737 fluorine Substances 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 16
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000002033 PVDF binder Substances 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000009719 polyimide resin Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 description 1
- VQVIHDPBMFABCQ-UHFFFAOYSA-N 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione Chemical compound C1=C2C(=O)OC(=O)C2=CC(C(C=2C=C3C(=O)OC(=O)C3=CC=2)=O)=C1 VQVIHDPBMFABCQ-UHFFFAOYSA-N 0.000 description 1
- 241000272814 Anser sp. Species 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000006158 tetracarboxylic acid group Chemical group 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)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は耐湿性の優れたフッ素系ポリマーと、基盤との
密着性及び耐熱性に優れたポリイミドプレポリマーとか
らなる組成物の配向膜よりなる液晶配向基板に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an alignment film of a composition comprising a fluorine-based polymer having excellent moisture resistance, and a polyimide prepolymer having excellent adhesion to a substrate and heat resistance. The present invention relates to a liquid crystal alignment substrate.
従来液晶ディスプレイの配向膜としてポリビニルアルコ
ールやポリイミド樹脂及びポリアミド樹脂の様な有機高
分子フィルムを使用する方法が知られている。Conventionally, there is known a method of using an organic polymer film such as polyvinyl alcohol, a polyimide resin or a polyamide resin as an alignment film of a liquid crystal display.
特にポリイミド樹脂は各種の液晶を配向させる働きを有
し耐熱性に優れているため広く用いられている。In particular, polyimide resins are widely used because they have the function of aligning various liquid crystals and have excellent heat resistance.
一般に液晶ディスプレイパネルは電極が形成された透明
基板にポリイミドプレポリマーを塗布し、次いで熱処理
及び配向処理を行ない、配向層を形成し、液晶配向基板
となしこれらの２枚の液晶配向基板間に液晶を封入して
成るものであり、液晶配向基板間に電圧をかけることに
よって液晶に電界を生ぜしめ液晶分子が配列することに
よって各種パターンを表示する機構となっている。Generally, a liquid crystal display panel applies a polyimide prepolymer to a transparent substrate on which electrodes are formed, and then heat-treats and orients it to form an alignment layer, and a liquid crystal alignment substrate is formed between the two liquid crystal alignment substrates. And a liquid crystal alignment substrate, a voltage is applied between the liquid crystal alignment substrates to generate an electric field in the liquid crystals, and the liquid crystal molecules are aligned to display various patterns.
液晶ディスプレイに要求される諸性能として重要なの
は、電圧をかけたときの応答が早いこと、及び信頼性に
おいて高温、高湿条件のもとにおかれても配向性が劣化
しないことなどである。What is important as the various performances required for a liquid crystal display are that the response when a voltage is applied is fast, and that the reliability does not deteriorate the orientation even under high temperature and high humidity conditions.
しかし、一般にポリイミド配向層は耐熱性に優れている
が耐湿性が劣るという欠点がある。これはポリイミド樹
脂被膜の吸水率が２〜５％と大きいため、配向層と基板
との界面に水が侵入しやすく、配向層と透明基板間の密
着性が低下するためである。However, in general, the polyimide alignment layer has excellent heat resistance, but has a drawback of poor moisture resistance. This is because the polyimide resin film has a high water absorption rate of 2 to 5%, so that water easily enters the interface between the alignment layer and the substrate, and the adhesion between the alignment layer and the transparent substrate decreases.
又ポリイミド配向層は体積抵抗率が1016〜1017Ω−cmの
高絶縁性被膜であるため、電圧をかけたとき液晶層に電
圧低下が生じ、応答が遅いという欠点がある。Further, since the polyimide alignment layer is a highly insulating film having a volume resistivity of 10 16 to 10 17 Ω-cm, there is a drawback that the voltage drops in the liquid crystal layer when a voltage is applied and the response is slow.
本発明は液晶の応答が早くかつ耐熱、耐湿性がありまた
基板との密着性に優れた配向層を得んと種々検討した結
果、体積抵抗率が低く、吸水率の低いフッ素含有ポリマ
ーと、密着性に優れたポリイミドプレポリマーとからな
る組成物を用いることによって優れた液晶配向基板を得
ることができることを見いだした。The present invention is a quick response of the liquid crystal, heat resistance, various resistance to moisture, and various examinations to obtain an alignment layer excellent in adhesion to the substrate, resulting in low volume resistivity, low water absorption fluorine-containing polymer, It was found that an excellent liquid crystal alignment substrate can be obtained by using a composition comprising a polyimide prepolymer having excellent adhesion.
本発明は一般式CHxF2-x−CHyF2-yｎ（ｘ、ｙ＝０、
１、２）で表わされるフッ素含有ポリマー及び一般式で
表わされるポリイミドプレポリマーからなる組成物を プラスチックよりなる透明基板に塗布又は塗装し、次い
で熱処理を行ない被覆を形成させ、該被膜を配向処理し
てなることを特徴とする液晶配向基板である。The present invention has the general formula CHxF2 - x-CHyF2 - yn (x, y = 0,
A composition comprising a fluorine-containing polymer represented by 1, 2) and a polyimide prepolymer represented by the general formula A liquid crystal alignment substrate, characterized in that it is formed by applying or coating on a transparent substrate made of plastic, followed by heat treatment to form a coating, and subjecting the coating to an alignment treatment.
本発明に使用するフッ素含有ポリマーとしてはポリテト
ラフルオロエチレンCF2−CF2ｎ、ポリビニリデンフ
ロライドCF2−CH2ｎ、ポリビニルフロライドCHF
−CH2ｎ、等があげられる。これらのフッ素含有ポリ
マーのうち特にポリビニリデンフロライドが望ましい。
ポリビニリデンフロライドは有機溶剤に溶解しやすく取
扱いが容易であり、又被膜としたときの体積抵抗率も低
いため液晶配向膜として使用した場合、電圧低下防止に
大きな効果がある。Examples of the fluorine-containing polymer used in the present invention include polytetrafluoroethylene CF 2 —CF 2 n, polyvinylidene fluoride CF 2 —CH 2 n, and polyvinyl fluoride CHF.
--CH 2 n, and the like. Among these fluorine-containing polymers, polyvinylidene fluoride is particularly desirable.
Polyvinylidene fluoride is easily dissolved in an organic solvent, is easy to handle, and has a low volume resistivity when formed into a film, and therefore, when used as a liquid crystal alignment film, has a great effect in preventing a voltage drop.
フッ素含有ポリマーを溶解する有機溶剤としてはN,N−
ジメチルホルムアミド、N,N′−ジメチルアセトアミ
ド、Ｎ−メチル−２−ピロリドン等の極性溶剤、ジオキ
サン等のエーテル類、シクロヘキサノン等とケトン類、
酢酸ブチル等のエステル類、又はこれらの混合溶剤が使
用される。N, N- as the organic solvent that dissolves the fluorine-containing polymer
Polar solvents such as dimethylformamide, N, N'-dimethylacetamide, N-methyl-2-pyrrolidone, ethers such as dioxane, cyclohexanone and ketones,
An ester such as butyl acetate or a mixed solvent thereof is used.
フッ素含有ポリマーはガラス又はプラスチック基板との
密着性が劣るという欠点がある。そこで基板との密着性
に優れたポリイミドプレポリマーとフッ素含有ポリマー
を併用することにより、基盤との密着性を高めた。Fluorine-containing polymers have the drawback of poor adhesion to glass or plastic substrates. Therefore, by using a polyimide prepolymer with excellent adhesion to the substrate and a fluorine-containing polymer in combination, the adhesion to the substrate was improved.
本発明に使用するポリイミドプレポリマーはテトラカル
ボン酸ジ無水物とジアミンとを極性有機溶剤中で反応さ
せることにより得られる。The polyimide prepolymer used in the present invention is obtained by reacting tetracarboxylic dianhydride and diamine in a polar organic solvent.
テトラカルボン酸ジ無水物とジアミンとの組合せによっ
て各種の構造のプレポリマーが得られるが液晶配向膜と
して使用した場合、特に良好な配向性を示すものとして
ピロメリット酸ジ無水物及びジアミノジフェニルエーテ
ルとの組合せ、又はベンゾフェノンテトラカルボン酸ジ
無水物とジアミノジフェニルエーテルとの組合せで得ら
れるプレポリマーがあげられる。Prepolymers of various structures can be obtained by combining tetracarboxylic acid dianhydride and diamine, but when used as a liquid crystal alignment film, with pyromellitic dianhydride and diaminodiphenyl ether as those showing particularly good orientation Examples thereof include prepolymers obtained by a combination or a combination of benzophenone tetracarboxylic dianhydride and diaminodiphenyl ether.
フッ素含有ポリマーとポリイミドプレポリマーとからな
る組成物を用いて液晶配向膜を製造する方法は上記の様
な溶液を電極が形成されたガラス又はプラスチックより
なる透明基板表面に厚さ0.01〜10μの範囲に均一に塗布
又は塗装し、次いで乾燥器中で50〜400℃の温度で必要
により２段階もしくはそれ以上のステップで３分〜10時
間熱処理して樹脂皮膜を形成せしめる。A method for producing a liquid crystal alignment film using a composition comprising a fluorine-containing polymer and a polyimide prepolymer is a solution having the above-mentioned solution and having a thickness of 0.01 to 10 μm on a transparent substrate surface made of glass or plastic on which electrodes are formed. The composition is uniformly applied or coated on a sheet, and then heat-treated in a dryer at a temperature of 50 to 400 ° C. for 2 minutes or more steps for 3 minutes to 10 hours to form a resin film.
透明基板としてはガラス薄板又はプラスチックフィルム
が用いられ、プラスチックフィルムとしてはポリエステ
ル、ポリエーテルスルホン、等のフィルムが用いられ
る。A thin glass plate or a plastic film is used as the transparent substrate, and a film of polyester, polyether sulfone, or the like is used as the plastic film.
樹脂を流延させる方法としてはホイラー、スピンナー、
ロールコーター、ドクターブレード、フローコーター等
を用いる。As a method of casting the resin, a wheeler, a spinner,
A roll coater, doctor blade, flow coater or the like is used.
フッ素含有ポリマーとポリイミドプレポリマーとの混合
組成物は両者の溶液を混合する事によって得られる。The mixed composition of the fluorine-containing polymer and the polyimide prepolymer can be obtained by mixing the solutions of both.
フッ素含有ポリマーとポリイミドプレポリマーとの混合
比率は、固形分で、ポリイミドプレポリマー100重量部
に対し、フッ素含有ポリマーが10乃至1000重量部が好ま
しい。10重量部以下では皮膜の体積抵抗率が高くなり、
液晶を組立てた際の応答が遅くなる。1000重量部以上で
は基板との密着性が低下する。The mixing ratio of the fluorine-containing polymer and the polyimide prepolymer is preferably 10 to 1000 parts by weight of the fluorine-containing polymer with respect to 100 parts by weight of the polyimide prepolymer as a solid content. Below 10 parts by weight, the volume resistivity of the coating becomes high,
The response becomes slow when the liquid crystal is assembled. If it is more than 1000 parts by weight, the adhesion to the substrate will decrease.
熱処理には電熱、赤外線、蒸気、高周波あるいはこれら
を併用することができるが、一般には循環熱風炉を使用
する。Electric heat, infrared rays, steam, high frequency or a combination of these can be used for the heat treatment, but a circulating hot stove is generally used.
被膜形成後の配向処理は一般には脱脂綿、ブラシ等で被
膜表面をラビングして数Å程度の溝を同一方向に形成す
ることによって行なわれる。The orientation treatment after forming the film is generally performed by rubbing the surface of the film with absorbent cotton, a brush or the like to form grooves of several Å in the same direction.
本発明によれば、従来のポリイミド配向層の耐熱性及び
密着性を低下させずに、液晶応答性及び耐湿性の優れた
液晶配向基板が得られる。According to the present invention, a liquid crystal alignment substrate having excellent liquid crystal response and moisture resistance can be obtained without lowering the heat resistance and adhesion of a conventional polyimide alignment layer.
実施例１ ポリビニリデンフロライド樹脂５重量部を、Ｎ−メチル
−２−ピロリドン95重量部に溶解させ、粘度100cpsの溶
液を得た。Example 1 5 parts by weight of polyvinylidene fluoride resin was dissolved in 95 parts by weight of N-methyl-2-pyrrolidone to obtain a solution having a viscosity of 100 cps.
この溶液と下記の式で示されるポリイミドプレポリマー
のＮ−メチル−２−ピロリドン溶液 を固形分で25:75の割合で混合し、２時間撹拌後、100cp
sの組成物を得た。This solution and an N-methyl-2-pyrrolidone solution of a polyimide prepolymer represented by the following formula Were mixed in solids at a ratio of 25:75 and stirred for 2 hours, then 100 cp
A composition of s was obtained.
この組成物を電極が形成されているガラス基板上にスピ
ンナーを用いて塗布し、循環熱風炉中で250℃で１時間
熱処理し、厚み0.1μの被膜を形成させた。This composition was applied onto a glass substrate on which electrodes were formed using a spinner and heat-treated at 250 ° C. for 1 hour in a circulating hot air oven to form a film having a thickness of 0.1 μm.
この被膜は基盤との密着性に優れ、密着性は碁盤目試験
法で調べた。This coating has excellent adhesion to the substrate, and the adhesion was examined by the cross cut test method.
すなわち、測定しようとする基板上に、所定膜厚のポリ
イミド膜を塗布硬化し、カッターナイフで1mm□で100個
のます目ができるよう、碁盤目状の切り傷をつける。こ
れをセロテープで剥離し、100個のます目に対する剥離
したます目の個数で表わす。碁盤目試験の結果は0/100
（はがれ数／総数）であった。That is, on the substrate to be measured was coated cured polyimide film having a predetermined thickness, so that in 1 mm □ a cutter knife can 100 squares, put tessellated cuts. This is peeled off with cellophane tape, and it is expressed by the number of peeled squares for 100 squares. The result of the cross-cut test is 0/100
(Number of peeling / total number).
この被膜の体積抵抗率は６×1414Ω−cmであり、吸水率
は1.2％であった。The volume resistivity of this coating was 6 × 14 14 Ω-cm, and the water absorption was 1.2%.
被膜表面をラビング処理して配向層を形成させ、次いで
この液晶表示配向基板を用いて液晶セルを組立てビフェ
ニル系液晶を注入して液晶パネルを作成した。The surface of the coating film was rubbed to form an alignment layer, and then a liquid crystal cell was assembled using this liquid crystal display alignment substrate to inject a biphenyl liquid crystal to prepare a liquid crystal panel.
液晶の応答特性を調べた結果、3Vの印加電圧で良好な配
向性を示した。As a result of investigating the response characteristics of the liquid crystal, a good orientation was shown at an applied voltage of 3V.
又液晶パネルの耐湿試験（80℃、90％RH）で800時間処
理しても配向特性の劣化は起こらなかった。In addition, the alignment characteristics did not deteriorate even after the liquid crystal panel was subjected to a humidity resistance test (80 ° C, 90% RH) for 800 hours.
フッ素含有ポリマーとポリイミドプレポリマーの組成を
変えた組成物の特性を、比較例１、２と供に第１表に示
した。The characteristics of the compositions in which the compositions of the fluorine-containing polymer and the polyimide prepolymer are changed are shown in Table 1 together with Comparative Examples 1 and 2.
比較例１ 実施例１で用いたポリイミドプレポリマーを用いて実施
例１と同様な方法で0.1μの被膜を形成させた。 Comparative Example 1 Using the polyimide prepolymer used in Example 1, a film having a thickness of 0.1 μm was formed in the same manner as in Example 1.
この被膜の体積抵抗率は５×1016Ω−cmであり、吸水率
は3.5％であった。The volume resistivity of this coating was 5 × 10 16 Ω-cm, and the water absorption was 3.5%.
実施例１と同様な方法で液晶パネルを作成し液晶の応答
特性を調べた結果、5Vの印加電圧が必要であった。A liquid crystal panel was prepared in the same manner as in Example 1 and the response characteristics of the liquid crystal were examined. As a result, an applied voltage of 5V was required.
更に耐湿性試験を行ったところ、200時間で配向不良が
発生した。Further, when a moisture resistance test was conducted, alignment failure occurred in 200 hours.
比較例２ 実施例１で用いたポリビニリデンフロライドを用いて実
施例１と同様な方法で0.1μの被膜を形成させた。Comparative Example 2 Using the polyvinylidene fluoride used in Example 1, a film having a thickness of 0.1 μm was formed in the same manner as in Example 1.
この被膜の体積抵抗率は５×1012Ω−cmであり、吸水率
は0.2％であった。The volume resistivity of this coating was 5 × 10 12 Ω-cm, and the water absorption was 0.2%.
この被膜と基盤との密着性を調べた結果、ゴバン目試験
で100/100であった。As a result of examining the adhesiveness between this coating and the substrate, it was 100/100 in the goose eye test.
以上に述べた如く、本発明によればフッ素含有ポリマー
とポリイミドプレポリマーとからなる組成物を用いてな
る液晶表示配向基板を使用することによって、基盤との
密着性に優れ、また液晶の応答特性が優れ、耐湿性も良
好な液晶表示装置が得られた。As described above, according to the present invention, by using a liquid crystal display alignment substrate comprising a composition comprising a fluorine-containing polymer and a polyimide prepolymer, excellent adhesion to a substrate and liquid crystal response characteristics can be obtained. And a liquid crystal display device having excellent moisture resistance was obtained.
フロントページの続き (56)参考文献 特開 昭60−104129（ＪＰ，Ａ) 特開 昭59−149321（ＪＰ，Ａ) 特開 昭58−125012（ＪＰ，Ａ) 特開 昭52−7757（ＪＰ，Ａ) 特開 昭50−38558（ＪＰ，Ａ) 特公 昭40−10715（ＪＰ，Ｂ１)Continuation of front page (56) Reference JP-A-60-104129 (JP, A) JP-A-59-149321 (JP, A) JP-A-58-125012 (JP, A) JP-A-52-7757 (JP , A) JP-A-50-38558 (JP, A) JP-B-40-10715 (JP, B1)
Claims (2)
100重量部と CHxF(2-x)−CHyF(2-y)ｎ （ｘ、ｙは０、１、２の自然数） 下記一般式で示されるポリイミドプレポリマー （ここでR1、R2はベンゼン環、縮合ベンゼン環、又は であり、X1は −Ｏ−、−SO2−、−Ｓ−、−CH2−、 である。） 10〜1000重量部とからなる組成物をガラス又はプラスチ
ックよりなる透明基板に塗布又は塗装し、次いで熱処理
を行い被覆を形成させ、該被膜を配向処理してなること
を特徴とする液晶配向基板。1. A fluorine-containing polymer represented by the following general formula:
100 parts by weight and CHxF (2- x ) -CHyF (2- y ) n (x and y are natural numbers of 0, 1, and 2) Polyimide prepolymer represented by the following general formula (Here, R 1 and R 2 are a benzene ring, a condensed benzene ring, or And X 1 is -O -, - SO 2 -, - S -, - CH 2 -, Is. ) A liquid crystal alignment substrate, characterized in that 10 to 1000 parts by weight of a composition is applied to or coated on a transparent substrate made of glass or plastic, followed by heat treatment to form a coating, and the coating is oriented. .
ライドである特許請求の範囲第１項記載の液晶配向基
板。2. The liquid crystal alignment substrate according to claim 1, wherein the fluorine-containing polymer is polyvinylidene fluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60290750A JPH0711638B2 (en) | 1985-12-25 | 1985-12-25 | Liquid crystal display alignment substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60290750A JPH0711638B2 (en) | 1985-12-25 | 1985-12-25 | Liquid crystal display alignment substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62150325A JPS62150325A (en) | 1987-07-04 |
| JPH0711638B2 true JPH0711638B2 (en) | 1995-02-08 |
Family
ID=17760041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60290750A Expired - Lifetime JPH0711638B2 (en) | 1985-12-25 | 1985-12-25 | Liquid crystal display alignment substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0711638B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5311500A (en) * | 1988-01-22 | 1994-05-10 | Fuji Photo Film Co., Ltd. | Magneto-optical disk |
| CN110093034A (en) | 2019-05-27 | 2019-08-06 | 武汉华星光电半导体显示技术有限公司 | The preparation method of modified polyamic acid and preparation method thereof, composite film |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS553683B2 (en) * | 1973-08-06 | 1980-01-26 | ||
| JPS527757A (en) * | 1975-07-09 | 1977-01-21 | Dainippon Printing Co Ltd | Photoelectric electrode substrate |
| JPS58125012A (en) * | 1982-01-20 | 1983-07-25 | Seikosha Co Ltd | Manufacture of liquid crystal cell |
| JPS59149321A (en) * | 1983-02-15 | 1984-08-27 | Matsushita Electric Ind Co Ltd | Liquid crystal cell |
| JPS60104129A (en) * | 1983-11-11 | 1985-06-08 | Hitachi Ltd | Fluorine-containing polyamic acid derivative and polyimide |
-
1985
- 1985-12-25 JP JP60290750A patent/JPH0711638B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62150325A (en) | 1987-07-04 |
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