TW573154B - Liquid crystal aligning film composition for LCD - Google Patents

Abstract

The present invention provides a liquid crystal aligning film composition for LCD. The liquid crystal aligning film composition for LCD is composed of a polyacetamide resin mono-polymeride (A) whose structural formula is shown as (I) where m is an integer of 1, 2 or 3, R is selected from one of the aromatic compound and circular aliphatic, X is selected from a group consisting amide base, ester base and ether base, Y is a structure having long-chain alkyl or long-chain alkyl containing fluorine, and number of carbons is at least six. After mixing the polyacetamide resin mono-polymeride (A) with a second test agent, an induced process (C) is performed to generate a film capable of aligning liquid crystal molecules.

Description

573154

V. Description of the invention (1) [Technical field to which the invention belongs] The following provides a liquid crystal alignment film composition for a liquid crystal display gas. =: =: The liquid crystal alignment film composition is composed of a long-chain alkyl group or S mouse long-chain alkyl structure polyfluorene imide resin polymer (a agent (B) is mixed and formulated through an induction process (c) ;: a thin film of molecules. With the gradual application of electronic products, LCD monitors have been developed rapidly in recent years. Therefore, the light is planted in: Important corners & the display capabilities of LCD monitors are ^ Based on the photoelectric anisotropy effect of liquid Ba material, however, 5 meshes can be considered with a regular arrangement. ^ Yue Dao / Bei Wumu ^ ^ ^ ^ / / effect, the alignment of the liquid crystal needs to use Ά ' In addition, LCD also needs some optical films to reinforce the preparation, formulation and application of 5 types of related materials. LC instructions ... Key materials V hot / hot issues " Positive film is used for upper and lower materials of liquid crystal display ^, = Accounted for about 1% of the cost of ㈣ raw materials' sub-arrangement direction. The inner side of the lower electrode substrate is used to control the liquid crystal separation. At present, the most widely used alignment in the liquid crystal display industry is Fang Qiu. The substrate of _ is oriented with a mechanical force to coat the alignment film.

勹 s 氆 —Friction from a force in the direction of 疋 can cause the liquid crystal molecules to produce a uniform and stable alignment (钤 & J treatment). This method is called the brushing orientation method (rUbbing method. However, the current advantage as Λ is that it has good mass productivity ', and after the alignment effect is stable, the polymer film of the disc film tends to be less robust & brushing-or Cracks occurred; when assembled into the LCD display surface II, UIV RJIUV "· fflipVJi ··· '_ _____ Page 6 573154 Case No. 90128985 Amendment V. Description of the invention (2), this" wounded ”The alignment film will adsorb ionic charges; and when the applied voltage is released, a residual voltage will accumulate (residue voltage). The residual voltage will cause image sticking on the screen and also make contrast In addition, because the alignment film is not resistant to brushing, many fine particles (part icl es) and dust (dust) are generated, which will cause partial discharge (discharge) under the voltage application state, which may damage the alignment film itself and oxidation. Indium tin oxide (ITO) electrode or thin film transistor (TFT) electrode. At the same time, large and small defects formed on the surface of the alignment film are more likely. Distorted phase distortion and light scattering reduce the display quality. Due to the greatly increased demand for mobile display devices, liquid crystal displays at high temperatures (such as in automobiles) are easy to use. Due to the decrease in the voltage retention rate, insufficient contrast and even unevenness (mura) will cause the problem of reduced display quality. Therefore, it is necessary to provide a liquid crystal display that can achieve high voltage retention at high temperature (80 °) Stable alignment film composition. PT = The main component of the film material is Polyimide resin, referred to as P1 'PI resin has the characteristics of strong resistance and good edge characteristics. · Cause two: chemical bath agent and radiation, Electrical semiconductor grade polymer tree: It can provide LCD stable display products. It is disclosed in patent No. f-several kinds of fatty acids (U.S. Patent No. 56981 35 dianhydride) to increase the allocation; 7 fatty films (aHphatic) double needle ( Response to fatty acid liver: a method that does not impart brush resistance to secondary, but introduces

$ 7 pages in degrees. For example, the Japanese version has not been submitted for review 丨: This increases the difficulty of the synthetic reaction -------- 笪 Patent Publication No. 9-1185065, Patent No. 573154, SS 90128985 V. Description of the invention (3) shows the use of thermal bridging (Thermal cracking) compounds increase the rubbing resistibility of the alignment film, but the maximum residual voltage is still too high, which cannot be used for high-end liquid crystal displays. For the alignment film to achieve better electrical requirements, such as high voltage retention, ^ DC residual potential, etc., refer to Japanese Unrequested Patent Publication No. Sho 64-4720 and Japanese Unrequested Patent Publication No. Hei 10_ The method disclosed in Patent No. 183118 "ί = ί 2 Patent No. 5_8582? 4 and US Patent No. 595 ι4, for example, the method of poiy amic acid resin and soluble Polyimide resin solution combines wealth with a certain ratio: the characteristics of the material itself, polyamic acid has low DC residual grinding, low image residue, and good printability. Paralyzed amine has a high voltage to maintain Rate and other; Second IS is more powerful than US mills: still square: == but it is soluble because it is soluble]; ^ ^ ^, it ^, 5; 5 ^ 999; ^ ^ The method of controlling the pretilt angle is beneficial Solvents can be disclosed ^ a long-chain alkyl group, which is a dagger, leading to steric hindrance caused by the combination of u and I. The chain is too :; because the long-chain alkyl group can not be effectively worrying , The pre-tilt angle control is not easy is its electric retention rate; fixed: outside is down (such as the car) has a high Therefore, it is necessary to mention U: Uniform! An important factor for long-term reliability, [the composition of the alignment film material in the invention.] The problem lies in the fact that the above-mentioned missing diamond is the main interest of the invention. It is still available under high voltage. The process of the present imine tree has low pre-tiling and no detailed instructions. It provides a scratch or a retention rate and voltage retention. It is based on a lipid oligomer (C). V. Residual image and technology V. Explanation of the invention (4) To avoid the existence of the above-mentioned defects, the alignment film composition is not easy for another purpose of the present invention. The film composition can be maintained at a high temperature of 80 ° C when the temperature is up to the above. Aim of long chain dazzling base structure polymer B) After mixing, it is easy to produce brush scratches or powders after attracting and conforming to various displays. Details of the present invention are as follows: Liquid crystal powder for liquid crystal displays. DC residual potential; stability of homogeneous rate. With long-chain alkyl or fluorine (A) and second reagent (produces easy to synthesize, resistant to rubbing to liquid crystal molecular film, not synthetic reaction capacity Receptacle, hereby described with FIG formula [Embodiment

The seed liquid is a liquid crystal alignment film composition for a display. The composition includes a polyimide resin oligomer (A), a second reagent (b), and an induction process (C). # 『第As shown in the “drawing diagram”, it is a structure diagram of the polyfluorene imine resin polymer of the present invention, where m is an integer of 1, 2, and 3, and R is one of an aromatic compound and a cyclic aliphatic, X It is selected from the group consisting of amidino group, ester group, ether group, etc., γ is a structure containing a long-chain alkyl group or a fluorine-containing long-chain alkyl group, and the carbon number is at least 6, among which the polyimide resin Examples of the weight percentage of the aggregate polymer (A) in the total resin solution are 1 to 30%, and most preferably 6 to 20%. The second ^ (B) may be selected from one of the following compounds: polyamidic acid, polyglutamic acid / glutamic polyimide resin, polyamidic acid and soluble polyimide tree, Θ4 勿 f, in a mixture Polyamic acid

573154 Case No. 90128985 Year Month Revision V. Description of the Invention (5) ^ The weight ratio of the mixture with the soluble polyimide resin is 20 ~ 80%, and the best content is 25 ~ 75%. As shown in "Figure 2", this is a polyamic acid structure diagram of the present invention, in which R 1 is a tetravalent organic group, and r 2 is a divalent organic group, "η is a positive integer", as in "Figure 3" Shown is a structural diagram of a soluble polyimide resin according to the present invention, in which r 3 is a tetravalent organic group, and r 4 is a divalent organic group, and η is a positive integer. 'An induction process includes anion-initiated polymerization (C), addition polymerization to initiate polymerization, addition of peroxide to initiate polymerization, ultraviolet (UV) light-induced polymerization, and r-ray-induced polymerization. [Example 1, Example] (3,5- (11 & 111111〇-56112〇1〇3. 1 (1 (1〇 (16.7168 seven 61 ') 12.4 lg and (fur an-2, 5 -di one) 7. 59g was put into the reactor, nitrogen gas was added, and 80 g of anhydrous N-methylpyrrolidone (NMP) was added, and heated at a temperature of 120 to 160 ° C for 10 to 12 hours The reaction was completed. After adding 1000 g of methanol to produce a white precipitate, the precipitate was washed with methanol, filtered, and dried at 40 ° C to obtain a white polyimide resin powder. 0.6 g of polyimide The resin powder was dissolved in 9.4 g of anhydrous N-methylpyrrole to form a polyimide resin oligomer solution (PI-1). Take 30 g of (PI-1) and add 2, 2 '-azobis (i Sobutyroni tr i le) 0.5g, put into the reactor, pass nitrogen gas, and heat at a temperature of 90 ~ 110 ° C for 5 ~ 6 hours to obtain a solution (PI-Bu 1). 〇2, 2-bis [4 -(4-aminophenoxy) phenyl] propane 14.6 g of a diamine compound and [5, 5 '-biisobenxofuranyl -1,3,1', 3'-tetraone] 10.3 g of a diacid Sf compound was placed in a reactor, Pass in nitrogen and add anhydrous N-methylpyrrolidone. Under the anti-temperature

Page 10 573154 ___Case No. 90128985_Year Month Day Amendment V. Description of the Invention (6) The polyamine solution (PAA-1) should be formed in about 3 hours. ; The weight ratio of the solution (PI-1-1) to the polyamidic acid solution (PAA-1) is 1: 9, and after mixing, it is diluted to a mixed resin solution (M-ΐ) with a solid content of 5%, and this is aligned The film solution is coated on the cleaned I TO substrate, heated in an oven at 200 ~ 250 ° C to complete drying, and the substrate is taken out and cooled to room temperature. [Example 2 'Example]

(3,5-diamino-benzoic acid dodecyl ester) 12.4 lg and (furan-2,5-dione) 7.59 g were put into the reactor, nitrogen was passed through, and anhydrous N-methylpyrrolidone was added (NMP) 80g, heating at a temperature of 120 ~ 160 ° C for 10 ~ 12 hours, the reaction is completed. After adding 1,000 g of methanol to produce a white precipitate, the precipitate was washed with methanol, filtered, and dried at 40 ° C to obtain a white polyimide resin powder. 0.6 g of polyfluorene imide resin powder was dissolved in 9.4 g of anhydrous N-fluorenylpyrrolidone to form a polyfluorene imide resin polymer solution (PI-1). Take 30g of (PI-1) and add 2 , 2'-azobis (iso butyronitrile) 0.5g, put into the reactor, pass nitrogen gas, and heat it at a temperature of 90 ~ 110 ° C for 5 ~ 6 hours to obtain a solution (PI-1-1). Add (4, 4 ’-methylene-bis-o-boluidine) 13.69g and (3, 5-diami

no-benzoic acid dodecyl ester) 0.45g of two diamine 4 compounds were placed in the reactor, and 12Og of m-monophenol and 2.0 g of quinoline were added under the condition of nitrogen flow. After stirring and dissolving, benzo [l, 2-c; 4,5-c '] di furan-1,3,5,7-tetraone 16.92g, and then heated for 4 hours at a temperature between 50 and 17 ° C' Finally, a polyimide alignment film solution can be obtained After adding 10 g of 0 g of alcohol to produce a white precipitate, the precipitate was washed with methanol, filtered, and dried to obtain a white polyimide resin powder. 0.6 g of polyimide resin powder was taken and dissolved in 9.4g of Butyrolactone, soluble

Page 11 573154 Case No. 90128985 Amendment V. Description of the invention (7) Polyfluorene imine solution (PI-2). (2,2-bis [4- (4-aminophenoxy) phenyl] propane) 14.6 g of a diamine compound with ([5,5'-1) 118〇561 ^ 〇1 [11 ^ 11 丫 1-1, 3,1 ', 3'one shi 6 * ^ 3〇1 ^]) 10.3 The dianhydride anhydride compound is put into the reactor' nitrogen gas is passed in 'and anhydrous N-methyl rhodoxone is added and reacted at room temperature About 3 hours, a polyamic acid solution (PAA-1) was formed. After the soluble polyfluorene imine solution (PI-2) and the polyfluorene acid solution (PAA-1) are mixed at a ratio of 3: 1 by weight, the mixed solution and the solution (p I -1 -1 ) Mix at a weight ratio of 9: 1 and dilute to a mixed resin solution (M-2) with a solid content of 5%, apply this alignment film solution on the cleaned ITO substrate, and heat in an oven for 200 ~ 250 ° C to completely dry, remove the substrate and cool to room temperature. [Example 3, Example] 12.41 g of (3,5-diaraino-benzoic acid dodecyl ester) and 7.59 g of (furan-2,5-dione) were put into the reactor, nitrogen was passed through, and anhydrous N was added -80 g of fluorenylpyrrolidone (NMP), heated at a temperature of 120 to 160 ° C for 10 to 12 hours, and the reaction was completed. After adding 100 g of methanol to produce a white precipitate, the precipitate was washed with methanol, filtered, and dried at 40 ° C to obtain a white polyimide resin powder. 0.6 g of polyfluorene imide resin powder was dissolved in 9.4 g of anhydrous N-methylpyrrolidone to form a solvent-soluble polyimide solution (p I -1), and a photosensitizer such as: thioxanthone was added The solution can be obtained (PI -1 -2) ° 2,2-bis [4- (4-aminophenoxy) phenyl] -propane 14 • 6g of diamine compound and 5, 5, -biisobenxofuranyl-1,3,1 , 3 '-in nitrogen, tetraone] 10.3g of the diacid

Page 12 573154 Case No. 90128985 Date of the month of the year _ V. Description of the invention (8) 'Add anhydrous N-methylpyrrolidone and react at room temperature for about 3 hours to form a polyamine solution (PAA -1 ). The weight ratio of the solution (PI-1-2) to the polyamic acid solution (PAA-1) is 1: 9, and after mixing, it is diluted to a mixed resin solution (μ-3) with a solid content of 5%. This alignment film The solution was coated on the cleaned I TO substrate, heated and baked until completely dried, and irradiated with ultraviolet light to crosslink. [Example 4, Example] (3,5- (11 & 111111〇-56112〇1. &Amp; .1 (1 (1〇 (16〇 16163 『) 12.4 lg and (furan-2, 5- dione) 7.5 g was put into the reactor, nitrogen gas was added, and 80 g of anhydrous N-fluorenylpyrrolidone (NMP) was added, and the reaction was heated at a temperature of 120 to 160 ° C for 10 to 12 hours. The reaction was completed. After 1000 g of methanol produced a white precipitate, the precipitate was washed with methanol, filtered, and dried at 40 ° C. to obtain a white polyimide resin powder. 0.6 g of polyimide resin powder Dissolved in 9.4 g of anhydrous N-methylpyrrolidone to form a polyfluorene imine resin solution (PI-1), take (PI-1) 30 g, add 0.5 g of barbituric acid, and put in the reaction Nitrogen was passed through the device, and the solution was heated at a temperature of 100 to 150 ° C for 0.5 to 6 hours to obtain a solution (p I -1-3). (2,2-bis [4- (4 -aminophenoxy) pheny1] propane) 14.6g of diamine compound and [5, 5, -biisobenxofuranyl -1,3,1,3'-tetraone]) 10.3g of diacid anhydride compound was put into the reactor Pass nitrogen and add anhydrous N-methylpyrrolidone at room temperature The reaction takes about 3 hours to form a polyamidic acid solution (paa-1). The weight ratio of the solution (PI-1-3) to the polyamidic acid solution (PAA-1) is 9: 1 'after mixing and diluted to a solid content 5% mixed resin solution (M — 4) 'Apply this alignment film solution to the cleaned I TO substrate and dry it.

Page 13 573154 —__ Case No. 90128985 Rev. __ V. Description of the Invention (9) " ~ 'The box is heated at 200 ~ 250 ° C until completely dried, the substrate is taken out and cooled to room temperature. [Example 5, Example] f (3,5-diamino-benzoicacid 2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoro-heptyl ester) 13.3 g and (furan-2,5-dione) 5.4g were put into the reactor, nitrogen was passed through, and anhydrous N-fluorenylpyrrolide (NMP) 67 · 4g was added at a temperature of 1 2 0 to 1 6 0 Heating between C and 10 to 12 hours, the reaction was completed. After adding 100 g of methanol, a white precipitate was generated, and the precipitate was washed with methanol, filtered, and dried at 40 C to obtain a white polyimide resin powder. 0.6 g of polyfluorene imide resin powder was dissolved in 9.4 g of anhydrous N-fluorenylpyrrolidone to form > valley powder> valley-type polySi & imine solution (PI-1) *, take ( pi_i), add 2,2, -azobis (isobutyronitrile) 0.5g, put it into the reactor and 'gas-in', and heat it for 5-6 hours at a temperature of 90 ~ 110 ° C to obtain a solution (PI-1 -1)*. Put 14 · 6g of 2, 2-bis [4- (4-aminophenoxy) pheny1] propane diamine compound and [5, 5 '-biisobenxofuranyl-1'3,1,3 tetraone] 10.3g of diacid gf compound Put nitrogen into the reactor and add anhydrous N-methylcaπone, and react at room temperature for about 3 hours to form a polyamic acid solution (paa-1). Solution (PI-1-1) * The weight ratio of polyamine solution (PAA-1) is 1: 9, after mixing, dilute to a mixed resin solution (M_1) * with a solid content of 5%. The film solution is coated on the cleaned 丨 τ〇 substrate, heated in an oven at 2000 ~ 250 ° C to complete drying, and the substrate is taken out and cooled to room temperature. [Example 6, Example]

Page 14 573154 __ Case No. 90128985_ Year Month Date __ V. Description of the invention (10) will be (3,5- (1131111110-56112〇1. 8. 1 (1 (1〇 (16. 丫 16516) :) 6.5 Put 5.4g (furan-2,5-dione) into the reactor, pass insult, and add anhydrous N-methylpyrrolidone (NMP) 67 · 4g, at a temperature of 120 ~ 160 ° C After heating for 10 to 12 hours, the reaction is completed. After adding 1000 g of methanol, a white precipitate is generated. The precipitate is washed with methanol, filtered, and dried at 40 ° C to obtain a white polyimide resin powder. 0.6g of polyfluoreneimide resin powder was dissolved in 9.4g of anhydrous N-fluorenylpyrrolidone to form a solvent-soluble polyfluoreneimide solution (PI-1) **, take (PI-1) * * 30g, add 2, 2 '-azob is- (isobutyronitri le) 0.5g, put into the reactor, pass in nitrogen, and heat at 90 ~ 110 ° C for 5 ~ 6 hours to obtain a solution (PI-1 -1) ** 〇 2,2-1 ^ 8 [4- (4-3111111〇011611〇 and ya) 01161171] 01'〇0 & 11614 · 6g of diamine compound with [5, 5, -bi isobenxofurany Bu 1,3,1,3, -tetraone] 10.3g of the dianhydride compound was placed in the reactor, and Nitrogen and anhydrous N-methylpyrrolidone were added and reacted at room temperature for about 3 hours to form a polyamidic acid solution (PAA-1). Solution (PI-1-1) ** and polyamidic acid solution The weight ratio of (PAA-1) is 1 5 ·· 8 5 and mixed to a mixed resin solution (M-1) with a solid content of 5% after dilution. ** 'Apply this alignment film solution to the cleaned IT0 substrate. The oven was heated at 200 ~ 250 ° C until it was completely dried, and the substrate was taken out and cooled to room temperature. [Example 7, Comparative Example] 2,2-bis [4- (4-aminophenoxy) phenyl] propane 14 • 6g of an amine compound and [5,5, -biisobenxofuranyl-1,3,1,3, -tetraone] 10.3g of dianhydride compound is put into the reactor and nitrogen is passed through

Page 15 573154 Case No. 90128985 Rev. V. Description of the Invention (11) gas, and adding anhydrous N-methylpyrrolidone, and reacting at room temperature for about 3 hours to form a polyamine solution (PAA-1 ). Apply the (, PI-1-l) solution on the cleaned ITO substrate, heat it in an oven at 200 ~ 250 ° C until it is completely dry, remove the substrate and cool to room temperature. [Example 8, Comparative Example]

(4, 4 '-methylene-bis-〇-boluidine) 13.69g and (3, 5 -diamino- ben zoic-acid dodecyl ester) 0.45g of two diamine compounds were placed in the reactor, and the In the case, add 120 g of m-cresol and 2.0 g of quinoline, stir and dissolve, and then add benzo [l, 2-. ; 4,5-. '] (11 {1 ^ 11-1,3,5,7-Seven61: "3〇116 16.922, and then heated at a temperature of 50 ~ 170 ° C for 4 hours, and finally a polyimide alignment membrane solution can be obtained, After adding 100 g of alcohol to produce a white precipitate, the precipitate was washed with methanol, filtered, and dried to obtain a white polyimide resin powder. 0.6 g of polyimide resin powder was taken and dissolved in 9.4 g of τ-butyrolactone, a soluble polyfluorene imide solution (PI-2).

A mixture of 14.6-g diamine compound of 2, 2-bis [4- (4-aminophenoxy) phenyl] propane and [5,5'-1 ^ 13 (^ 61 ^ 〇 {11 ^ 1171-1, 3, 1 ' 3'-tetraone] 10 · 3g of the dianhydride compound was put into the reactor, nitrogen was passed in, and anhydrous N-methylpyrrolidone was added, and the reaction was performed at room temperature for about 3 hours to form a polyamine solution ( PAA-1). Soluble polyamidoimine solution (PI-2) and polyamidoacid solution (PAA-1) are mixed at a weight ratio of 3: 1, and then diluted to a solid content of 5%. Resin solution, apply this alignment film solution on the cleaned substrate, heat it in an oven at 2000 ~ 250 ° C to dry completely, take out the substrate and cool to room temperature. In order to test the characteristics of the present invention, Coating the complete alignment film solution

Page 16 573154 Case No. 90128985 Fifth, the description of the invention (12), after baking to dry and cooling to room temperature I το substrate, the following evaluation experiments are performed: I · Alignment film pretilt angle measurement: Brush grinding machine The orientation of the brush film was finally made into a liquid crystal cell for testing, and a Merck (ZL 1-2293) liquid crystal was poured into the liquid crystal, and finally sealed with a sealant to measure the pretilt angle. Alignment measurement: The liquid crystal cell used for the drive test was observed with a polarizing microscope to see that no abnormal dom a i η occurred. Measurement of the toughness of the alignment film: The glass sheet test piece containing the alignment film was prepared, in which the film thickness of the alignment film was about 0. 05 to 0. 15 // m, and the brushing conditions were fixed. The rotation speed of the drum is 1000 rpm, the number of orientations is 40 times, and the platform is moved at a speed of 10 cm / min.) The surface of the film is subjected to a brushing treatment, and finally the alignment film is brushed under a polarizing microscope. The number of holes on the film surface to determine: less, medium is the result of traffic. Evening DC residual potential measurement: ^ said: after applying a fixed 10volt, 2 hours of DC voltage, the maximum residual voltage of 7C pieces on the day. Measurement of voltage holding ratio: = After the trial of the liquid crystal cell, measure the voltage holding ratio at the voltages of Τ :: Γ: ιν respectively. -Comparison table of test results of the invention examples, "Shang Fei ________ 二 ---------- Brother Π Π

IV

V

573154 Amendment said ----- Ά 9Q12SQSR_ Month 5. Description of the invention (13) Five pictures "Polarized microscope picture of the toughness measurement of the alignment film of the present invention" "The sixth picture" is the voltage retention rate of the smart device Graph of temperature. Therefore, it can be seen that the polyimide resin oligomer (A) accounts for the weight percentage of the total resin solution. ~ "%, Most preferably 6 ~ 2 ~ 〇% The present invention specifically discloses and describes the selected preferred embodiment, the winter == limits the scope of the invention, that is, anyone who is familiar with the technology 5 = months The changes made in accordance with the scope of the patent application of the present invention have not deviated from the spirit and scope of the invention which can be produced in a small form or in detail.

573154 Case No. 90128985 Modification Brief Description of the Drawings [Simplified Description of the Drawings] Figure 1 is the structure diagram of the polyimide resin polymerized polymer of the present invention. Figure 2 is a structural diagram of a polyamic acid according to the present invention. FIG. 3 is a structural diagram of a soluble polyfluoreneimide resin according to the present invention. FIG. 4 is a comparison table of test results according to the embodiment of the present invention. FIG. 5 is a polarized light microscope image for measuring the toughness of the alignment film of the invention. Fig. 6 is a graph showing the relationship between the voltage holding rate and the temperature of the device of the present invention.

Page 19

Claims (1)

573154 Case No. 90128985 said amended HOOC ^ COOH 6. Scope of patent application The film composition, in which the second agent may be selected from the group consisting of polyamic acid, soluble polyimide resin, and a mixture of polyamic acid and soluble polyimide resin. 5. The liquid crystal alignment film composition for a liquid crystal display as described in item 4 of the scope of patent application, wherein the structural formula of the polyamic acid is as shown in the following formula: Π R1 is a tetravalent organic group, R2 is a divalent organic group, and η is a positive integer. 6 · The liquid crystal alignment film composition for a liquid crystal display according to item 1 of the scope of the patent application, wherein (B) the second reagent, wherein the soluble polyfluorene imine resin has a structural formula shown by the following formula m ·· OMnnnc cnno X ommmc cnno \ / / -N \ R3 is a tetravalent organic group, R4 is a divalent organic group, and η is a positive integer 573154 _ Case No. 90128985_Yueyuekou ^ | T__ VI. Number of patent applications. 7. The liquid crystal alignment film composition for a liquid crystal display according to item 4 of the scope of the patent application, wherein the polyamic acid and a soluble polyimide resin mixture, the polyamic acid occupies the polyamic acid and the soluble polyimide The weight ratio of the amine resin mixture is 20 to 80%. 8. The liquid crystal alignment film composition for a liquid crystal display according to item 4 of the scope of the patent application, wherein the polyamic acid and a soluble polyimide resin mixture, and the polyamic acid accounts for the polyamic acid and the soluble polyimide The weight ratio of the amine resin mixture is preferably 25 to 75%. 9 · The liquid crystal alignment film composition for a liquid crystal display as described in item 1 of the scope of patent application, wherein the induction process is anion-induced. The induction process in the liquid crystal display alignment 臈 composition ′ described in the item is a heating method to initiate a polymerization reaction. 1 1. The liquid crystal for a liquid crystal display according to item 1 of the scope of the patent application = a film composition, wherein the induction process is to add a peroxide to initiate a poly 3 reaction. 1 2. The alignment film composition for a liquid crystal display as described in item i of the patent application scope, wherein the induction process is UV photo-initiated polymerization ^ The liquid crystal display device described in item 1 of the scope of the patent application, induces the process into the film composition ′ I to be r-ray-induced polymerization :: Page 22