TW200804586A - Liquid crystal panel cleaning agent, and method for producing liquid crystal panel comprising cleaning step using the same cleaning agent - Google Patents

Abstract

To provide a cleaning agent having low electroconductivity and high detergency to easily dissolve a liquid crystal without imparting corrosion to a metal. The cleaning agent for a liquid crystal panel is used in a production process of the liquid crystal panel. The cleaning agent for the liquid crystal panel comprises (A) a hydrocarbon solvent, (B) a surfactant and (C) a water-soluble organic solvent.

Description

200804586 IX. OBJECTS OF THE INVENTION: TECHNICAL FIELD The present invention relates to a detergent which is a liquid crystal panel cleaner used in a process for liquid crystal panels, which comprises (A) a hydrocarbon solvent, and (B) an interface. An active agent, and (C) a water-soluble organic solvent. [Prior Art] The liquid crystal panel has two substrates on which the transparent electrodes are formed at an appropriate interval, and the two substrates are bonded in a hollow manner to form a space for filling the liquid crystal, and the liquid crystal is filled in the space. The injection port is sealed, and a voltage is applied to the electrodes between the upper and lower substrates, and the image display is performed by changing the alignment direction of the liquid crystal or phase conversion. In the process of the liquid crystal panel, it is necessary to wash and remove the liquid crystal adhered to the gap or the outer peripheral portion of the two substrates. The substrate after the liquid crystal is injected is washed, because the liquid crystal residue is left unattended, the insulation may be defective, or the liquid crystal of the residue may act as a release agent, and in the subsequent process, the deflection of the deflector may occur. The situation. Therefore, in order to remove the liquid crystal of the residue, a detergent having a high cleaning performance is required. It is known that liquid crystal molecules of a polarized compound are hydrophobic due to strong intermolecular interaction, so dispersion or dissolution in a water system is difficult. Therefore, in order to wash the liquid crystal of the residue, a detergent containing an ionic activator or an ionic emulsifier is used (see Patent Documents 1 and 2). Patent Document 1 discloses a detergent containing a salt composed of an ammonium cation, a phosphate anion or the like. With this salt, it is possible to prevent electrolytic corrosion of the cleaned 5 200804586 liquid crystal panel. Further, Patent Document 2 discloses a nonionic surfactant containing a high affinity. Environmental pollution can be prevented by containing a nonionic interface agent. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2000-313899 [Patent Document 2] Japanese Patent No. 2982975 [Disclosure] [Problems to be Solved by the Invention] In the manufacturing process of a liquid crystal panel, Patent Document 1 is known. The detergent of a salt composed of an ammonium cation, a phosphate anion or the like often has a high electrical conductivity, and if the detergent having such a composition remains, there is a case where the operation speed of the panel is lowered and the power consumption is increased. And there will be cases where extreme metals (especially molybdenum) are etched. Therefore, a detergent having a low electrical conductivity is required. Further, since the detergent disclosed in Patent Document 2 uses an interface agent and a water-soluble organic solvent as constituent components, it is not easy to dissolve the above problem, and the object of the present invention is to provide a conductivity which can easily dissolve liquid crystal. A high cleaning performance detergent. [Means for Solving the Problem] The present inventors have found that a detergent containing a liquid crystal can be easily dissolved in a detergent containing a hydrocarbon solvent, and the present invention has been completed. The liquid crystal panel cleaner in the process of the panel contains (A) a hydrocarbon solvent, (B) an interface active phase, and (C) a water-soluble organic solvent. The oily activity contains, and the low liquid has an active I crystal for the electric species. Further, the present invention provides a liquid crystal panel cleaner in which 10% by weight of water is added to the liquid crystal panel cleaner. Further, the present invention provides a cleaning step of using the above liquid crystal panel detergent for a liquid crystal panel. [Effects of the Invention] According to the present invention, it is possible to provide a detergent which dissolves the high washing performance of the liquid crystal and has a low electrical conductivity, and the damage of the constituent members is small. Further, the cleaning performance of the detergent can be adjusted by such a detergent water. Therefore, a liquid crystal surface which is highly resistant to cleaning, corrosion, and the like can be produced by the detergent. [Embodiment] Hereinafter, embodiments of the present invention will be described. The present invention (A) a hydrocarbon solvent, (B) a surfactant, and (C) a water-soluble substance. The "cleaning agent" of the present invention means both the original liquid release liquid before dilution with water. [(A) Hydrocarbon Solvent] The detergent of the present invention contains (A) a hydrocarbon solvent. By the <agent, it becomes a liquid crystal which can easily disperse hydrophobicity. Leverage excellent cleaning ability. As the (A) hydrocarbon solvent, a method of diluting from an unsaturated hydrocarbon solvent having a terpene solvent 'saturated hydrocarbon solvent and a carbon number of 8 to 16 and 70% by weight of the method (E) can be easily contained. Further, a predetermined amount of the liquid crystal panel is dispensed by the use of the present invention, and the rinsing is not performed. The detergent contains an I solvent. Here, it is preferable that the diluted (t) hydrocarbon is dissolved in the dilute t, and it is preferable to provide at least one of 7 200804586 in the composition group having 8 to 16 carbon atoms. Among them, from the viewpoints of high safety, easy handling, and the like, it is preferred to use an unsaturated hydrocarbon solvent having 8 to 16 carbon atoms. Examples of the terpene-based solvent include geraniol, nerol, linalool, lemon, citronellol, and <pair> cover (卩-11^111:11&1^) , diphenyl menthane, menthol, isomenthol, neomenthol, limonene, dipentene, terpineol, fragrant ketone, ionone, flavonoids, camphor, burning (b〇rnane), borneol, norbornane, terpene, α-pinene, non-decene, thujane, α-terpenal, /5 - arborvitae Alkane, decane, camphor, α • terpinene, sputum, sputum, 7-terpinene; abietane, abietic acid; sesquiterpene physin ), nerolitriol, hopsene, caryophyllene, elemene, eugenol, juniperene, tutin, juvenile hormone; dip-halfene Geranyi farnesol; triterpene squaiene, sulphuric acid, camena genin, h〇pane, lanosterol; tetradecene Carotenoids, etc. For easily available, preferably in a single class (iv), wherein 'as having high detergency properties to limonene or pinene is preferred. These may be used alone or in combination of two or more. The saturated hydrocarbon solvent having a carbon number of 8 to 16 and the unsaturated hydrocarbon solvent may be either linear, branched or cyclic. Specific examples thereof include octane, decane, decane, undecane, dodecane, octene, decene, decene, and decene. The oxime or the like is usually a commercially available product, and among them, it is preferred to use dodecene and tetradecene from the viewpoints of washing performance or drying speed. These can be used in a single bracelet or in combination of two or more. 8 200804586 The content of such (A) hydrocarbon solvent is preferably from 1% by weight to 2% by weight, particularly preferably from 0.1% by weight to 10% by weight. By setting the amount of the hydrocarbon solvent in such a range, the detergent has excellent storage stability and high cleaning performance. [(B) Surfactant] The detergent of the present invention may further contain (B) a surfactant. By containing the (B) surfactant, the components can be uniformly dissolved without causing phase separation. As the (B) surfactant, * ^ is preferably a nonionic surfactant. By using a non-ionic interface agent, the 从 从 from #麻 & α 齐 疋 can not only improve the cleaning of the metal material, but also reduce the conductivity. As the nonionic surfactant, both are HT R cumin 〇

(8)) hydrophilic interfacial activity ^ A 8 ri - ΤΓ λα interface, tongue licking agent, and average HLB value of 8 or less (b2) lipophilic interface sufficiency * silk * W by combining these, It is more difficult to produce a phase-separating detergent which is a non-ionic interface, such as a more virgin. ^ ^ . 1 / agent, selected from the group consisting of polyepoxyalkylene alkylene oxide alkyl alkoxy ether, polyepoxy furnace A & hydrocarbon alkene and its lean oxyalkylene month 9 fatty acid ester, Polyepoxyallyl propyl ether, polyepoxy alcohol alcohol, lack of this 私 私 private liver fatty acid ester, sorbose

It is preferred that at least one of Sf 曰 曰 fat 夂 曰 曰, and poly epoxide furnace 聚 童 童. The t% milk hydrocarbon may be exemplified by polyoxybutane.妗 ^ ^ ^ 虱 及 及 及 及 及 及 及 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱^ ^ The alkyl group of the terminal etherified product of the oxygenated hydrocarbon is preferably a catalyst having a carbon number of 6 18 .栌u 厌 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 Tetraalkyl, pentadecyl, hexadecyl, heptadecyl, octadecyl and the like. Further, when the above-mentioned carbon number is in the range of the carbon number, it may be a branched thio group or a cyclic alkyl group (which may be a monocyclic ring or a heterocyclic ring), and may also have an unsaturated bond. And a part of a hydrogen atom may be substituted by an alcoholic hydroxyl group. The fatty acid may, for example, beheptanoic acid, octanoic acid, citric acid, citric acid, dodecanoic acid, tetradecanoic acid, fifteenth acid, hexadecanoic acid, heptanoic acid, octadecanoic acid or the like. Specific examples of the fluorenyl group having 1 to 18 carbon atoms include, for example, a mercapto group, an ethyl ketone group, an acrylonitrile group, a propyl group, a butyl group, an isobutyl group, a hexyl group, a decyl group, and a benzoquinone. Base, 2-naphthylmethyl group, and the like. For the non-ionic surfactant, a commercially available active agent can be used, and examples thereof include a NEWCALL series (trade name: manufactured by Sakamoto Emulsifier Co., Ltd.), a SOFTANOL series (trade name: manufactured by Nippon Shokubai Co., Ltd.), and the like. As described above, the detergent of the present invention is preferably a combination of a detergent (b1) hydrophilic surfactant and (b2) a lipophilic surfactant. As the (b 1) hydrophilic surfactant, it is preferred to use an HLB value of 8 or more in the above nonionic surfactant. On the other hand, as the (b2) lipophilic surfactant, it is preferred to use an HLB value of 8 or less in the above nonionic surfactant. Further, as the (B) surfactant, when the (bl) hydrophilic interface active I* biocide and (b2) the lipophilic surfactant are used in combination, the content of the (bl) hydrophilic surfactant is higher. good. In the detergent, the content of the (B) surfactant is preferably from i% by weight to 10 200804586 80% by weight, particularly preferably from 3% by weight to 60% by weight. By setting the surfactant in such a range, it is possible to effectively avoid the defects caused by the separation of the detergent and the like, and to maintain the cleaning performance. Further, the following ionic surfactant may be appropriately added to the above-mentioned (Β) surfactant in a range in which the conductivity is not extremely increased. Examples of such an ionic surfactant include a well-known cationic surfactant, an anionic surfactant, and an amphoteric surfactant. Examples of the cationic surfactant include an alkylbetaine surfactant, a guanylamine betaine surfactant, and a sulfonate beet test (su 1 f 〇betai η) surfactant. The hydr ο X y sulfobetain surfactant, the amido su 1 fobetai η surfactant, and the phosphobetain interfacial activity The agent, the bismuth rust beet test system surfactant, the amino-propionic acid-based surfactant, the amino acid-based surfactant, and the like. More specifically, there may be mentioned alkyl betaines, nonylpropyl propyl betaine, lauryl hydroxy sulfobetaine, 2-alkyl-N-carboxy fluorenyl-N-hydroxyethyl imidazolium beet A base, lauryl imidodipropionic acid or the like. The anionic surfactant may, for example, be an alkyl sulfonate, an alkyl sulfate, an oximation amino acid salt, a polyoxyethylene alkyl ether sulfate, an alkylbenzene sulfonate or an N-oxime. Base-N-methyltaurate, α-olefin sulfonate, higher fatty acid ester sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, fatty acid soap, alkyl phosphate salt, etc. . Further, the salt used herein is preferably a metal salt such as sodium, potassium or magnesium; an ammonium salt; an organic ammonium salt such as monoethanolammonium salt, diethanolammonium salt or triethanolammonium salt. 11 200804586 The amphoteric surfactant is similar to the above-mentioned cationic surfactant, and includes an alanine surfactant, an imidazole rust betaine surfactant, and a guanylpropyl betaine interface. An active agent, an aminodipropionate base surfactant, and the like. [(c) Water-soluble organic solvent] The detergent of the present invention may further contain (C) a water-soluble organic solvent. By containing the (C) water-soluble organic solvent, the solubility of the detergent in water can be increased. The water-soluble organic solvent is selected from the group consisting of alkanolamines, alkylamines, polyalky lene polyamines, glycols, squamoses, ketones, acetates, and carboxylic acids. At least one of the groups consisting of acid esters is preferred. Specific examples of the alkanolamines include ethanolamine, diethanolamine, triethanolamine, 2-(2-aminoethoxy)ethanol [=diglycolamine], N,N-dimethylethanolamine, N, N-Diethylethanolamine, N,N-dibutylethanolamine, N-methylethanolamine, N-ethylethanolamine, N-butylethanolamine, N-decyldiethanolamine, monoisopropanolamine, diisopropyl Alcoholamine, triisopropanolamine, and the like. Specific examples of the alkylamines include 2-ethylhexylamine, dioctylamine, tributylamine, tripropylamine, triallylamine, heptylamine, and cyclohexylamine. Specific examples of the polyalkylene polyamines include diethylenetriamine, triethylenetetramine, propylenediamine, N,N-diethylethylenediamine, N,N,-diethylexene. Ethylenediamine, 1,4-butanediamine, N-ethyl-ethylenediamine, 1,2,propylenediamine, 1,3-propanediamine, 1,6-hexanediamine, and the like. Specific examples of the glycols include ethylene glycol, diethylene glycol, propylene glycol, glycerin, 1,2-butanediol, 1,3-butanediol, 2,3·butanediol, and polyepoxy hydrocarbons. 2 12 200804586 Polyoxyalkylene glycol and the like. Specific examples of the ethers include ethylene glycol monodecyl ether [=methyl 赛路苏], ethylene glycol monoethyl ether [= ethyl 赛路苏], ethylene glycol diethyl ether, and B. Glycol isopropyl ether, ethylene glycol mono-n-butyl ether, propylene glycol monodecyl ether, propylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl mystery, diethylene glycol monobutyl Alkyl ether [butyl diglycol], diethylene glycol dimethyl ether, diethylene glycol diethyl ether, dipropylene glycol monomethyl ether, benzyl ethyl ether, dihexyl ether and the like. Specific examples of the ketone include acetone, methyl ethyl ketone, diethyl ketone, mercaptopropyl ketone, decyl isobutyl ketone, decyl amyl ketone, di-isopropyl ketone, and cyclobutyl. Ketone, cyclohexanone, cyclohexanone, and the like. Specific examples of the acetates include ethylene glycol monomethyl ether acetate [= thioxa sulphate acetate], ethylene glycol monoethyl ether acetate [= ethyl 赛路苏乙Acid ester], ethylene glycol mono-n-butyl ether acetate [= n-butyl stilbene acetate], propylene glycol monomethyl ether acetate, and the like. Specific examples of the carboxylic acid esters include alkyl- or aliphatic carboxylic acid esters, monohydroxycarboxylic acid esters and the like. Specific examples thereof include methyl lactate, ethyl lactate, decyl acetate, ethyl acetate, propyl acetate, butyl acetate, amyl acetate, isoamyl acetate and the like. Among them, from the viewpoint of high solubility in water, polyepoxy diol, butyl diglycol, ethyl diglycol, butyl glycol, ethyl ethylene glycol or the like is used. In the detergent, the content of the (C) water-soluble organic solvent is preferably from 1% by weight to 80% by weight, and preferably from 15% by weight to 70% by weight. /〇 is especially good. By the amount of the water-soluble organic solvent to be in such a range, it is possible to effectively avoid the defects caused by the separation of the detergent and the like, and to maintain the cleaning performance. [(D) Corrosion inhibitor] In order to prevent corrosion of the metal as an electrode, the detergent of the present invention may also contain an anticorrosive agent (preservative). Such an anticorrosive agent can use xylitol, glucose, mannose, galactose, sorbitol, mannitol, benzotriazole, thioglycerol, 3 (2-aminophenylthio)-2-hydroxypropane Thiol, 3-(2-hydroxyethylthio)-2-hydroxypropylthiol, 2-hydrothiopropionic acid, 3-hydrothiopropionic acid, catechol, pyroallol, and Gallic acid and so on. Among them, it is preferred to use xylitol or thioglycerol. These can be used singly or in combination. In the detergent, the content of such (D) corrosion inhibitor is preferably less than 10% by weight, particularly preferably less than 5% by weight. By setting the amount of the corrosion inhibitor in such a range, it is possible to effectively prevent the corrosion. [Others] The detergent of the present invention can contain any component such as an antifoaming agent or a stabilizer, as necessary. The antifoaming agent may, for example, be an acetylenic alcohol-based surfactant, acetylene alcohol or acetylene glycol. In the detergent, the content of the antifoaming agent is preferably less than 3% by weight. The acetylenic alcohol-based surfactant is preferably a compound represented by the following formula (1), for example, 14 200804586 [Chemical Formula 1] r2

One I

Ri-C=C—0 - OH r3 (1) [Chemical Formula 2] ί4

—C-OH

I R5 - (2) (wherein Ri is a hydrogen atom or a group represented by the following formula (2); and R2, R3, R4 and R5 are each independently and represent a hydrogen atom and an alkyl group having 1 to 18 carbon atoms; ). The acetylenic alcohol-based surfactants are, for example, commercially available "SARFINOL" or "Olfine" (all of which are sold by AIR PRODUCTS AND CHEMICALS). Among them, in terms of physical properties, it is preferable to use "SARFINOL104", "SARFINOL82", or a mixture thereof. In addition, "Olfine B", "Olfine P", "Olfine Y", etc. can also be used. Further, as the above acetylene alcohol, a compound to which an alkylene oxide is added may be used. As the alkylene oxide to be added to the above acetylene alcohol, it is preferred to use ethylene oxide, propylene oxide, or a mixture thereof. The acetylene alcohol-alkylene oxide adduct is represented by the following formula (3) (wherein R7, R8, R9, and Rio each independently represent a hydrogen atom and an alkyl group having 1 to 6 carbon atoms). The compound is preferred. Here, (n + m) represents an integer of 1 to 30 0 15 200804586 [Chemical Formula 3]

Ry R6-c=cco—(-ch2ch2o-)-^h R8 "•(3) (wherein R6 represents a hydrogen atom or the following formula (4)) [Chemical Formula 4] r9 —(^η2〇η2ο·)^ η

Rio ... (4) an acetylenic alcohol-acetylenic alcohol-alkylene oxide adduct as a surfactant, which is a well-known substance per se. Such a commercial product is preferably a series of "SARFINOL" (manufactured by AIR PRODUCT AND CHEMICALS) or a series of "ACETHYLENOL" (KAWAKEN FINECHEMICALS). Among them, "SARFINOL 420", "SARFINOL 440", "SARFINOL 465", "SARFINOL 485", "" are used in consideration of changes in characteristics such as solubility in water and surface tension due to the number of addition of ethylene oxide. ACETHYLENOL EL"' "ACETHYLENOL EH" or a mixture thereof is preferred. Further, when the detergent is diluted with (E) water, the amount of water added to the detergent is preferably from 10% by weight to 70% by weight. By setting the amount of (E) water added in such a range, the cleaning performance of the detergent 16 200804586 can be adjusted. Moreover, by adding water, a more uniform detergent can be provided. The dilution method may be a method in which a composition other than the mixed water is used to prepare a detergent, and then water is added to obtain a desired concentration. The liquid crystal to which the detergent of the present invention can be used is not particularly limited, and any of TFT liquid crystal, STN liquid crystal, and TN liquid crystal can be washed. [Manufacturing Method of Liquid Crystal Panel] The liquid crystal panel is produced by a liquid crystal panel obtained by injecting a liquid crystal by a well-known manufacturing method, and using a cleaning step using the detergent of the present invention. The washing step is not particularly limited, and examples thereof include a dipping washing, a rinsing and washing method, and the like, and it is also possible to apply such a method of washing with ultrasonic waves or shaking. The method of washing the liquid crystal panel may, for example, be a method in which the liquid crystal panel is impregnated in the detergent of the present invention, ultrasonically treated to be washed, and the washing liquid is washed away using a washing liquid. The washing temperature can be appropriately determined depending on the setting of the apparatus, and is usually from 10 ° C to 701. The washing time is also appropriately determined in accordance with the setting of the apparatus, and is usually 2 minutes to 10 minutes. The washing method after washing may be, for example, a pure water (ion exchange water) impregnation rinsing, or a spray rinsing, ultrasonic rinsing, shaking rinsing or the like. The rinsing temperature is usually from 1 〇 ° C to 70 ° C. After the liquid crystal panel is rinsed, it is dried by heating at a temperature ranging from 20 ° C to 70 ° C. [Examples] Hereinafter, the present invention will be described in detail by way of examples, but the invention should not be construed as limited. 17 200804586 [Examples 1 to 4, Comparative Examples 1 to 2] The detergents were prepared according to the compositions shown in Table 1, and the respective samples were 1 to 6. Further, the detergents of the samples 1 to 4 are the detergents of the composition of the present invention, and the detergents of the samples 5 to 6 are comparative detergents. (bl) component 'The detergents of samples 1 to 5 are s〇ftANOLI 20 (trade name: Nippon Shokubai Co., Ltd.; polyethylene oxide alkyl alcohol ether), and sample 6 detergent is A32B (product) Name: manufactured by Takemoto Oil Co., Ltd.; anionic surfactant). In addition, in the component (b2), any of the detergents of the sample 丨5 is a non-ionic E-2 2 2 (trade name: manufactured by Nippon Oil & Fats Co., Ltd.; For each of the detergents of samples i to 5, butyl diglycol (BDG) was used. The numerical values in parentheses in the table are all % by weight. Using these samples 1 to 6, the corrosion test of the detergent, the detergency of the liquid crystal, and the solubility test were carried out. Further, in the etching test, a substrate having a 150 nm molybdenum deposited film was formed on the glass substrate at 50. The temperature of (: was immersed in the samples 1 to 6 for 1 〇 minutes, and it was evaluated by measuring the decrease in the film thickness of molybdenum. The 'liquid crystal cleansing property and the solubility test system dissolved the liquid crystal components in the samples 1 to 6' The cleansing properties and solubility of the liquid crystals were visually observed and evaluated. The results are shown in Table 1. The symbols in Table 1 are as follows. (Purity and solubility of liquid crystal) 〇: Good washing performance and dissolution Performance: △: Insufficient cleaning performance and solubility of liquid crystal. 18 200804586 [Table l] (A) (bl) (b2) (C) (E) Detergency of liquid crystals, soluble film thickness reduction of liquid crystal conductivity ( Ms/sec) Sample 1 Limonene (5) SOFTANOL (3〇) E-202 (5) BDG (45) Water (15) 〇〇 6.4 <0.1 Sample 2 Limonene (3.5) SOFTANOL (21) E -202 (3.5) BDG (31.5) Water (41.5) 〇〇 6.1 <0.1 Sample 3 Dodecene (2) SOFTANOL (21) E-202 (5) BDG (31.5) Water (41.5) 〇〇 4.1 &lt ;0.1 Sample 4 Dodecene (6) SOFTANOL (36) E-202 (6) BDG (52) - 〇〇0 <0.1 Sample 5 - SOFTANOL (6) E-202 (5) BDG (25) Water (64) Δ 〇 8.2 <0.1 test 6 Limonene (5) A32B (6) E-202 (5) BDG (25) Water (59) 〇〇14.0 1.5 From the above results, it is known that the detergent of the present invention has less corrosion to metals and liquid crystal It is excellent in detergency and solubility, and because it has low conductivity, it does not adversely affect the electrical characteristics of the liquid crystal display element. [Simple description of the figure] No [Main component symbol description] None 19

Claims (1)

200804586 X. Patent application scope: 4 1 · A liquid crystal panel cleaner used in the process of liquid crystal panel. The liquid crystal panel cleaner contains (A) a hydrocarbon solvent, (B) a surfactant, and (C) a water-soluble organic solvent. 2. The liquid crystal panel cleaner according to claim 1, wherein the (B) surfactant is a nonionic surfactant. 3. The liquid crystal panel cleaner according to claim 2, wherein the (B) nonionic surfactant contains (bl) a hydrophilic surfactant having an average HLB value of 8 or more. 4. The liquid crystal panel cleaner according to claim 2, wherein the nonionic surfactant further comprises (b2) a lipophilic surfactant having an average HLB value of 8 or less. 5. The liquid crystal panel cleaner according to claim 1, wherein the (A) smoke solvent is selected from the group consisting of terpene-based solvents and a saturated hydrocarbon solvent having a carbon number of 8 to 16 and having a carbon number of 8 to 16. At least one of the group consisting of unsaturated hydrocarbon solvents. 6. The liquid crystal panel cleaner according to claim 1, wherein the (c) water-soluble organic solvent is selected from the group consisting of alkanolamines, alkylamines, polyalkylenes, and glycols. At least one of the group consisting of ethers, ethers, ketones, acetates, and carboxylic acid esters. The liquid crystal panel cleaner according to claim 1, wherein the content of the (A)te solvent is 0.01% by weight to 20% by weight, and the content of the (B) surfactant is i% by weight to 8 〇 weight. /〇, the content of the (c) water-soluble organic solvent is from 1% by weight to 8% by weight. The liquid crystal panel cleaner according to claim 1, which further contains (D) an anticorrosive agent. 9. The liquid crystal panel cleaner according to claim 1, which further contains (E) water. 10. The liquid crystal panel cleaner according to claim 9, wherein the (E) water is contained in an amount of 10% by weight to 70% by weight. A method of diluting a liquid crystal panel cleaner by dissolving 10% by weight to 70% by weight of (E) water in the liquid crystal panel cleaner according to the first aspect of the patent application. 1 2. A method of producing a liquid crystal panel comprising the step of using a liquid crystal panel cleaner as described in claim 1 of the patent application. 21 200804586 VII. Designation of Representative Representatives (1) The representative representative of the case is: No (2), the representative symbol of the representative figure is a simple description. · No. 8. If there is a chemical formula in this case, please reveal the best indication of invention. Characteristic chemical formula: None 4