JPH03252625A - Electrode substrate for liquid crystal display panel - Google Patents

Abstract

PURPOSE:To obtain the substrate having excellent transparency, electrical conductivity and durability by using a specific composite substrate and forming a transparent electrode mainly consisting of a metallic thin-film layer thereon. CONSTITUTION:A non-optically active transparent film or sheet which is formed of a polycarbonate resin, polyether sulfone resin, polysulfone resin or polyarylate resin and has <=30nm retardation value is used as a base material layer 1 constituting the substrate A. The composite substrate having the constitution consisting in providing an anchor coating layer 2 on at least one surface thereof and further, providing a layer 3 consisting of an air permeation resistant resin layer and/or a layer 4 consisting of the cured matter of a crosslinkable resin on the anchor coating layer 2 is used. The transparent electrode B mainly consisting of the metallic thin-film layer is formed thereon. The substrate A having the excellent transparency, electrical conductivity and durability of the transparent electrode B is obtd. in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrode substrate for a liquid crystal display panel in which a transparent electrode is provided on at least one side of the substrate.

[Conventional technology]

In recent years, there have been demands for liquid crystal display panels to be thinner, lighter, larger, have arbitrary shapes, have zero curved surfaces, and lower costs, and to meet these demands plastic substrates have been used. Liquid crystal display panels were studied and began to be put into practical use. This plastic substrate for liquid crystal display panels is required to have the following characteristics.

(1) Be optically transparent in the visible light range.

(2) It should be optically isotropic and should not produce colored interference fringes.

(3) The surface is smooth and hard.

(4) It must have chemical resistance that can withstand manufacturing processes such as liquid crystal assembly, and heat resistance of 100°C or higher.

(5) Good adhesion with the sealing material and long-term airtightness.

(6) Must be moisture permeable.

(7) Must be air proof (air permeable).

(8) It should have liquid crystal resistance and be stable over a long period of time.

In particular, when long-term reliability is required or when used under harsh conditions such as in automobiles, even better air resistance and liquid crystal resistance are required.

If the air resistance is insufficient, there will be problems such as air bubbles entering and causing a black color on the display area, and if the liquid crystal resistance is insufficient, there will be problems such as not being able to obtain stable performance over a long period of time. There is.

Therefore, as the substrate, at least one side of a base material layer made of a non-optically active transparent film or sheet having a retardation value of 30 nm or less and molded from polycarbonate resin, polyethersulfone resin, polysulfone resin, or polyarylate resin is used. , an anchor coat layer formed using an anchor agent dissolved or dispersed in an aqueous medium is provided, and a single-layer or multi-layer protective layer made of an air-permeable resin and/or a cured crosslinkable resin is further provided on the anchor coat layer. It has been proposed to use a composite substrate having a structure provided with (see Japanese Patent Application Laid-open No. 71829/1983).

However, there was a problem that the transparency, conductivity, and durability of the transparent electrode were low.

[Problem to be solved by the invention]

The present invention was made in view of the current situation, and an object of the present invention is to provide an electrode substrate for a liquid crystal display panel having a transparent electrode having excellent transparency, conductivity, and durability.

[Means to solve the problem]

The present invention provides a transparent electrode (B) on at least one side of the substrate (A).
) in an electrode substrate for a liquid crystal display panel provided with a substrate (
As A), at least one side of the base layer (1) made of a non-optically active transparent film or sheet with a retardation value of 30 nm or less formed from polycarbonate resin, polyethersulfone resin, polysulfone resin, or polyarylate resin. Anchor yaw 1-layer (2)
A composite substrate is used which has a structure in which a permeable resin layer (3) and/or a layer (4) made of a cured cross-linked resin is provided on the anchor coat layer (2), and The present invention provides an electrode substrate for a liquid crystal display panel, characterized in that a transparent electrode (B) made of a metal thin film layer is formed.

The present invention will be explained in detail below.

The base material layer (1) constituting the substrate (A) is made of a material having a retardation value (R value) molded from a polycarbonate resin, a polyethersulfone resin, a polysulfone resin, or a polyarylate resin. ) A non-optically active transparent film or sheet with a diameter of 30 nm or less is used.

Films or sheets molded from resins other than these resins are not suitable when considering the use of electrode substrates for liquid crystal display panels.

Here, the retardation value (R value) is expressed as the product of the film thickness d and the absolute value of the difference between the two refractive indexes in the direction perpendicular to the film, as shown in the following formula (I). is the value to be used.

R=d−nl rlz HHH (1) (where nl is the refractive index in any direction, and n2 is n.

If the R value exceeds 30 nm, the appropriate viewing angle for the panel becomes narrow (and interference fringes occur, reducing the readability when applied to, for example, a liquid crystal display device).

The resin that is to be used as the material for the film or sheet that satisfies these conditions is of inferior quality.

If it is crystalline, it will partially crystallize and become less transparent.
Further, a problem arises in that optical anisotropy occurs and the R value becomes high.

Anchor coat 2 An anchor coat layer (2) is provided on at least one side of the base layer (1) prior to the formation of the air permeable resin layer (3) or the layer (4) made of a cured crosslinkable resin. It will be done.

The anchor coat layer (2) between the air-permeable resin layer (3) and the base layer (1) is preferably formed using an anchor agent dissolved or dispersed in an aqueous medium.

As anchoring agents, various water-soluble resins (water-soluble polyester resins, water-soluble polyamide resins, water-soluble polyurethane resins, etc.) and water-dispersible resins (ethylene-vinyl acetate emulsions, (meth)acrylic emulsions, etc.) can be used. Polyester resins having hydrophilic groups,
Particular preference is given to using polyamide resins, polyurethane resins or ionic polymer complexes.

The hydrophilic group is at least one selected from the group consisting of a sulfonic acid metal base, a carboxyl group, a tertiary nitrogen substituted with an alkyl group, a tertiary nitrogen substituted with an alkylene group, a quaternary ammonium salt substituted with an alkyl group, and a quaternary ammonium salt substituted with an alkylene group. One type of hydrophilic group is mentioned.

The resin having a hydrophilic group is melted or dispersed in fine particles in an aqueous medium containing water and, if necessary, a water-soluble organic solvent, a surfactant, a basic neutralizer, etc., and then applied to the base material. Coated on layer (1).

In the present invention, the polyester resin having a suitable hydrophilic group includes a sulfonic acid metal base and/or a hydrophilic group.
or carboxyl group from 5 to 1.000 equivalents/106g
Examples include those contained in the range of resins. The resin includes
If necessary, polyethylene glycol having a molecular weight of 100 to 6,000 may be blended in an amount not exceeding 30% by weight (based on the polyester resin).

In the present invention, suitable hydrophilic group-containing polyamide resins include a sulfonic acid metal base, a carboxyl group, an alkyl group-substituted tertiary nitrogen, an alkylene group-substituted tertiary nitrogen, an alkyl group-substituted quaternary ammonium salt, and an alkylene group-substituted hydrophilic group. At least one quaternary ammonium salt
Examples include those containing 1,000 equivalents of 7106 g of resin. The resin may have a molecular weight of 6,000 if necessary.
Polyethylene diamine or polyethylene glycol can be blended in an amount not exceeding 30% by weight (based on the polyamide resin).

In addition, as the polyurethane resin having a hydrophilic group suitable for the present invention, examples of the hydrophilic group include a sulfonic acid metal base, a carboxyl group, an alkyl group-substituted tertiary nitrogen, an alkylene group-substituted tertiary nitrogen, an alkyl group-substituted quaternary ammonium salt, and an alkylene group. At least one group-substituted quaternary ammonium salt
Examples include those containing seeds in a range of 5 to 1.000 equivalents/106 g resin. The resin may have a molecular weight of 6 if necessary.
,000 polyethylene diamine or polyethylene glycol in an amount not exceeding 30% by weight (based on the polyurethane resin).

As the ionic polymer complex having a hydrophilic group, for example, one made of a mixture of polyethyleneimine, polyacrylic acid, and modified starch is used.

The anchor coat layer (2) between the layer (4) made of a cured crosslinkable resin and the base layer (1) may be similarly formed using the anchor agent dissolved or dispersed in the aqueous medium. However, in order to obtain strong adhesion to the base layer (1), it is preferable to use a crosslinkable resin as described below as an anchor agent.

In particular, phenoxy ether type crosslinkable resins and urethane resins are preferred.

In addition, when the layer (4) made of a cured cross-linked resin is sequentially provided on the air-permeable resin layer (3), the anchor coat layer between the former layer (4) and the latter layer (3) is particularly do not need.

The air permeable resin has a resistance of 111 months to 111 degrees Celsius, and its oxygen permeability (ASTMD1434
-75) is 30 Cc/24hr-n (・
ATM or less, and the peel strength with the base layer (1) (measured according to ASTM D1876) is preferably 50 g or more, more preferably 1
It is 50g or more. Oxygen permeability is 30cc/24h
This is because if the temperature is below r-boatm, black spots will not appear on the display section under harsh conditions with severe temperature changes or during long-term use. In addition, if the peel strength is 50 g or more, the air permeable resin layer (3) may be used in processes such as transparent electrode treatment, patterning in liquid crystal panel manufacturing, acid/alkaline aqueous solution treatment, organic chemical treatment, and assembly process. This is to prevent peeling.

Note that the visible light transmittance of the composite substrate of the base layer (1), the anchor coat layer (2), and the air-permeable resin layer (3) is preferably 60% or more from the viewpoint of the contrast of the display section.

As the air-permeable resin that satisfies these conditions, a polymer containing at least one of an acrylonitrile component, a vinyl alcohol component, and a vinylidene halide component is preferably used. When heat resistance (example: 130°C or higher) is required in the manufacturing process of liquid crystal display cells or terminal connection, etc., acrylonitrile is graft-polymerized to a polymer of acrylonitrile component or vinyl alcohol as a graft group 1 2 . It is preferable to use the obtained polymer.

The thickness of these air-permeable resin layers (3) is preferably set in the range of 1 to 50 μm, more preferably in the range of 2 to 20 μm. If it is less than 1 μm, the air permeability is insufficient;
If it exceeds 0 μm, it tends to curl when forming a composite substrate.

In order to provide the air-permeable resin layer (3) on the base layer (1) via the anchor coat layer (2), the air-permeable resin is usually dissolved in one or more solvents. The anchor coat layer (2) is dispersed and provided on the base layer (1).
), dry it, and heat treat it if necessary.

The layer (4) consisting of a cured crosslinkable resin is preferably a cured crosslinkable resin selected from phenoxy ether type crosslinkable resins, epoxy resins, acrylic resins, melamine resins, phenolic resins, or urethane resins. It consists of

As typical examples, phenoxy ether type crosslinkable resin and acrylic resin will be described in detail.

Particularly preferable resins in terms of width of crosslinkable resins are as follows - Funagura (I
This is a phenoxy ether type polymer represented by I) or a phenoxy ether type crosslinked polymer obtained by subjecting the hydrogen moiety of its hydroxyl group to a crosslinking reaction with a polyfunctional compound.

(In the formula, R'-R'' each represents a hydrogen atom or a lower alkyl group having 1 to 3 carbon atoms, R7 represents a lower alkylene group having 2 to 4 carbon atoms, and n represents an integer of 20 to 300. ) In the above-Funazura (n), examples of the lower alkyl group having 1 to 3 carbon atoms represented by R'-R6 include a methyl group, ethyl group, propyl group, and isopropyl group, and the carbon represented by R7 Examples of the lower alkylene group having numbers 2 to 4 include ethylene group, propylene 34 group, trimethylene group, and butylene group.

In addition, as the polyfunctional compound to be reacted to obtain a crosslinked polymer, groups having high reaction activity with hydroxyl groups, such as isocyanate groups, carboxyl groups, and reactive derivative groups in carboxyl groups (such as halides, active amides, active ester, acid anhydride group, etc.), mercapto, etc., such as tolylene diisocyanate, m-phenylene diisocyanate, p-
Polyisocyanates such as phenylene diisocyanate, hexamethylene diisocyanate, diphenylmethane-4,4'-diisocyanate, triphenylmethane-p, pP''-triisocyanate, polymethylene polyphenyl polyisocyanate, and their polyhydric alcohol adducts, phenol siblock Blocked polyisocyanates such as dotolylene diisocyanate, polyhydric carboxylic acids such as adipic acid, tartaric acid, sebacic acid, phthalic acid and reactive derivatives at carboxyl groups, mercapto-substituted organic carboxylic acids such as thioglycolic acid, etc. In addition, epichlorohydrin, sodium thiosulfate, melamine-formaldehyde resin, phenol-formaldehyde resin, urea-formaldehyde resin, etc. can be used.

In addition, as the acrylic resin, a compound containing at least three or more acryloyloxy groups and/or methacryloyloxy groups in the molecule [hereinafter referred to as polyfunctional (meth)acryloyloxy group-containing compound] is used as the main component. Mention may be made of compositions based on functional unsaturated monomers and/or their initial radical reactants.

Particularly preferably, the polyfunctional unsaturated monomer containing at least three (meth)acryloyloxy groups in the molecule is preferably 50% by weight or more, more preferably 50% by weight or more based on the total unsaturated monomers. 70% by weight, particularly preferably 90%
It is a composition consisting of an unsaturated monomer mixture and/or its initial radical reactant containing at least % by weight.

Examples of polyfunctional unsaturated monomers containing at least three (meth)acry560yloxy groups in the molecule include pentaerythritol tetra(meth)acrylate;
Examples include pentaerythritol tri(meth)acrylate, trimethylolethane tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, and dipentaerythritol hexa(meth)acrylate.

Unsaturated monomers that can be used together with these include unsaturated monomers having two or one (meth)acryloyloxy groups in the molecule and other vinyl monomers.

The bifunctional monomer is a hydrocarbon residue, a polyether residue, or a polyester residue in which the group bonding between each (meth)acryloyloxy group in one molecule contains 100 or less carbon atoms. Monomers are preferred. For example, ethylene glycol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, 1,6-hexanethiol di(meth)acrylate, polyethylene glycol di(meth)acrylate, polytetramethylene glycol di(meth)acrylate Examples include acrylate, polyester diol di(meth)acrylate, and the like.

As the monofunctional monomer, 2-hydroxymethyl (meth)acrylate, glycidyl (meth)acrylate,
(Meth)acrylic acid, a quaternary ammonium salt of (meth)acrylic acid ester, etc. can be used.

These crosslinkable resins can also be layered in the same manner as in the case of the air-permeable resin.

The layer (4) made of these cured crosslinkable resins is formed by the usual wet film forming method, dry film forming method, or melt film forming method. The membrane method is optimal.

The thickness of the layer (4) made of the cured crosslinkable resin is preferably 1 to 500 μm, more preferably 2 to 200 μm. If it is less than 1 μm, chemical resistance is insufficient, while if it exceeds 500 μm, it tends to curl when forming a composite substrate.

0-78 To prepare the electrode substrate for a liquid crystal display panel of the present invention, a transparent electrode mainly consisting of a metal thin film layer is provided on one or both sides of the composite substrate obtained above.

The transparent electrode (B) is a layer (4) made of a cured crosslinkable resin.
It is preferable to form the transparent electrode layer on the substrate (A) via the transparent electrode pattern from the viewpoint of chemical resistance and liquid crystal resistance after processing the transparent electrode pattern.

The transparent electrode (B) used in the present invention mainly consists of a metal thin film layer. The metal thin film layer is transparent, and contains at least one metal selected from the group consisting of gold, silver, and copper.
It is preferable from the viewpoint of conductivity.

For example, gold thin film, silver thin film, copper thin film, gold silver alloy thin film, gold copper alloy thin film, gold silver copper alloy thin film, silver copper alloy thin film, and in addition to these, aluminum, nickel, palladium, platinum,
Examples include alloy thin films to which indium, tin, zinc, etc. are added. In particular, silver containing 1 to 30% by weight of copper and 3 to 3% of gold
Silver containing 0% by weight is preferably used because the metal thin film has excellent transparency, conductivity, and stability against heat and light.

The thickness of the metal thin film is 50 to 50 mm from the viewpoint of conductivity and transparency.
300 people is preferable, and 70 to 200 people is particularly preferable.

Further, the metal thin film layer includes a layer (B1) containing at least one metal selected from the group consisting of gold, silver, and copper, titanium, zirconium, indium, silicon, carbon, cohar 1-,
a layer (B2) containing at least one metal selected from the group consisting of nickel, and the latter layer (B2) is provided above or in contact with both sides of the former layer (B1). This often improves stability against heat and light.

The latter layer (B2) may be slightly oxidized.

Further, when such a film configuration is adopted, the thickness of the former layer (B1) is preferably 50 to 300 layers, particularly preferably 70 to 200 layers, from the viewpoint of conductivity and transparency.

On the other hand, the thickness of the latter layer (B2) is preferably 3 to 100 layers, particularly preferably 5 to 50 layers, from the viewpoint of improving stability against heat and light and transparency.

A transparent high 90 refractive index thin film layer may be further provided on one or both sides of the metal thin film layer. Examples of the transparent high refractive index thin film layer include oxides of one or more metals selected from titanium, indium, zinc, tin, yttrium, erbium, zirconium, cerium, tantalum, and hafnium, or zinc sulfide.

The metal thin film layer can be formed by any of the following methods: physical film forming methods such as vacuum evaporation, ion spray ink, and spackling methods, chemical film forming methods such as chemical plating, and combinations thereof. A physical film forming method is suitable from the viewpoints of uniformity of the formed thin film, film formation speed, and ease of production.

Further, the transparent high refractive index thin film layer can be formed by the above-mentioned physical film forming method, coating method, or the like.

Next, the layer structure of the electrode substrate of the present invention will be explained with reference to the drawings.

FIG. 1 is a sectional view showing an example of an electrode substrate of the present invention.

In this example, an anchor coat layer (
2) is formed, and furthermore, on the anchor coat layer (2), an air-permeable resin layer (3) and a layer (4) consisting of a crosslinkable resin effect material are provided, and these layers are laminated to form a substrate. (A) is configured. A transparent electrode (B) is provided on the layer (4) of the cured crosslinkable resin of the substrate (A).

FIG. 2 is a sectional view showing another example of the electrode substrate of the present invention.

In this example, an anchor coat layer (
2), (2) are formed, and an air permeable resin layer (3) and a layer (4) made of a cured crosslinkable resin are provided on the anchor coat layer (2) on one side, Further, on the anchor coat layer (2) on the opposite side, an air-permeable resin layer (3) or a layer (4) made of a cured cross-linked resin is provided, and these layers are laminated to form a substrate (A ) is configured. A transparent electrode (B) is provided on one layer (4) of a cured crosslinkable resin of the substrate (A).

1 9 Anchor coat layer (2) formed on both sides of base layer (1)
, (2) may be of the same type or of different types.

Further, the air permeable resins (3), (3) or the layers (4), (4) made of cured crosslinkable resins may be of the same kind or of different kinds.

FIG. 3 is a sectional view showing still another example of the electrode substrate of the present invention.

In this example, anchor coat layers (2), (2) are formed on both sides of the base 11 layer (1), and an air-permeable resin layer (3) and a crosslinkable resin layer are formed on one of the anchor coat layers (2). A layer (4) made of a cured resin is provided, and a layer (4) made of a cured crosslinkable resin is provided on the anchor coat layer (2) on the opposite side. Each layer is laminated to form a substrate (A). A transparent electrode (B) is provided on one layer (4) of a cured crosslinkable resin of the substrate (A).

The anchor coat layers (2), (2) and the layers (4), (4) made of cured crosslinkable resin may be of the same type or different types on both sides of the base layer (1), respectively. You can.

1. The electrode substrate for liquid crystal display panels of the present invention can be used not only for liquid crystal display devices, but also for various transparent electrodes such as touch panels, electrodes for photoconductive photoreceptors, surface heating elements, and windows of buildings. It can be used as a filter or decorative board for various day sprays.

〔Example〕

EXAMPLES The present invention will be explained in more detail by giving examples below.

In the examples, "parts" and "%" are based on weight.

Example 1 and Comparative Example 1 Anchor coating agent solution (first Liquid) was applied using a 0.1 mm diameter wire round doctor and dried at 120"C for about 2 minutes to a thickness of 0.5 μm.
An anchor coat layer (2a) of 34 m was formed.

On this anchor coat layer (2a), a gas-permeable resin solution (second liquid) prepared with the following composition was applied to a gap of 85 μm, and then dried at 70 to 110″C for 10 minutes.
An air-permeable resin layer (3) having a thickness of 10 μm was formed.

In addition, the air-resistant resin layer (
3) Apply the anchor agent solution (first liquid) on the opposite side to the surface formed with a wire round of 0.5 mmφ,
It was dried at 120°C for 3 minutes to form an anchor coat layer (2b) with a thickness of 2 μm.

This air-permeable resin layer (3) and anchor coat layer (2)
A crosslinkable resin solution (third liquid) having the following composition was applied onto b) using an applicator with a gap of 35 μm.
A composite substrate was prepared by drying at 140"C for 4 minutes and then heating and crosslinking at 140"C for 30 minutes to provide layers (4a) and (4b) of cured crosslinkable resin with a thickness of about 10 μm.

Composition of the first liquid Composition and preparation of the second liquid 40 parts of ethylene/vinyl alcohol copolymer (mole ratio 3
2/6 B, F101 manufactured by Kuraray Co., Ltd.), 90 parts of water,
10 parts of acrylonitrile was added to 110 parts of normal propyl alcohol, and nitrogen gas was passed through the mixture while stirring.
It was heated to 0°C.

8% ammonium persulfate was added to this solution as a polymerization catalyst.
．． 5 ml of 0.5-ml of 4% sodium bisulfite was added, and the graft polymerization reaction was carried out for 1 hour. After that, do 8 in the same way.
% of ammonium persulfate and 4% of sodium bisulfite were added, and the same polymerization conditions and operations were repeated a total of 6 times to complete the polymerization reaction (polymer concentration: 18.2%).

After the polymerization was completed, the polymerization solution was heated to 90° C. to remove residual monomers and a portion of the solvent, and then a 65/35 mixture of normal propyl alcohol and water was added to prepare a second solution. The obtained second liquid had a polymer concentration of 16%.
, normal propyl alcohol/water was approximately 55/45, and the grafting rate was 16%.

The composite substrate (A) obtained with the third liquid composition was set in a sputtering device, and the vacuum chamber was evacuated to a degree of vacuum of 2X10-''Four r.After that, Ar gas was introduced and the degree of vacuum was increased to 3X10.
After maintaining the temperature at −3 Torr, the AgAu alloy target (A
As shown in Fig. 3, a transparent electrode (B) was formed by forming an AgAu alloy thin film with a thickness of 70 mm on a layer made of a cured crosslinkable resin, and an electrode substrate was obtained. Ta.

Further, the composite substrate (A) was set in a sputtering apparatus, and the vacuum chamber was evacuated to a degree of vacuum of 2×10 −5 Torr. After that, Ar102 mixed gas (0□20%
) into the vacuum chamber, and the degree of vacuum was set to 3XIO-3Torr.
Then, a transparent electrode (B
) was formed to obtain an electrode substrate of Comparative Example 1.

Transmittance at 550 nm, resistance, heat resistance (ratio R/RO of resistance value R after being left at 90°C for 1.000 hours and initial resistance value R0), bending resistance of the electrode substrates of Example 1 and Comparative Example 1 (The diameter is 5mm so that the transparent electrode surface is on the inside or outside.)
The ratio R/RO) of the resistance value R after repeating bending and stretching 10 times along the circumference of the rod of φ and the initial resistance value R8 is the first
Shown in the table.

Example 2 Instead of AgAu alloy target, AgAu (Au15
%) target and In metal target, 7
A transparent electrode (B) was formed in the same manner as in Example 7 8 1 except that a 30-person In thin film was further laminated on the 0-person AgAu alloy thin film, and an electrode substrate was obtained. The results are shown in Table 1.

Example 3 Instead of AgAu target □, AgCu target (
70 using Cu10%) and Ti metal targets.
An additional 30 Ti″a on top of the AgCu alloy thin film!
A transparent electrode (B
) to obtain an electrode substrate, and evaluated in the same manner as in Example 1. The results are shown in Table 1. The electrode substrate for a liquid crystal display panel of the present invention has excellent transparency, conductivity, heat resistance, It has excellent durability such as bending resistance.

〔Effect of the invention〕

The present invention can provide an electrode substrate for a liquid crystal display panel with excellent transparency, conductivity, and durability. Can be widely used for various electrodes, various displays, etc.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of an electrode substrate for a liquid crystal display panel according to the present invention. FIG. 2 is a sectional view showing another example of the electrode substrate for a liquid crystal display panel of the present invention. FIG. 3 is a sectional view showing another example of the electrode substrate for a liquid crystal display panel of the present invention. A: Substrate, B: Transparent electrode, 1: Base layer 2: Anchor coat layer, 3: Air-permeable resin layer, 4: Layer made of cured crosslinkable resin.

Claims (1)

[Claims] 1. An electrode substrate for a liquid crystal display panel in which a transparent electrode (B) is provided on at least one side of the substrate (A), in which the substrate (A) is made of a polycarbonate resin, a polyethersulfone resin, or a polysulfone resin. Base layer (1) consisting of a non-optically active transparent film or sheet molded from resin or polyarylate resin and having a retardation value of 30 nm or less
An anchor coat layer (2) is provided on at least one side of the
Furthermore, an air permeable resin layer (
3) and/or a layer (4) consisting of a crosslinkable resin cured product
1. An electrode substrate for a liquid crystal display panel, characterized in that a transparent electrode (B) consisting mainly of a metal thin film layer is formed on the composite substrate, using a composite substrate having a structure in which a metal thin film layer is formed. 2. An anchor coat layer in which the air-permeable resin layer (3) is formed from at least one anchoring agent selected from the group consisting of a polyester resin having a hydrophilic group, a polyamide resin, a polyurethane resin, and an ionic polymer complex. 2. The electrode substrate for a liquid crystal display panel according to claim 1, wherein the electrode substrate is provided on the base material layer (1) via the substrate layer (1). 3. The hydrophilic group is a sulfonic acid metal base, a carboxyl group,
Alkyl group-substituted tertiary nitrogen, alkylene group-substituted tertiary nitrogen,
3. The electrode substrate for a liquid crystal display panel according to claim 2, wherein the electrode substrate is at least one hydrophilic group selected from the group consisting of alkyl group-substituted quaternary ammonium salts and alkylene group-substituted quaternary ammonium salts. 4. The air-permeable resin constituting the air-permeable resin layer (3) is
The electrode substrate for a liquid crystal display panel according to claim 1, which is a polymer containing at least one of an acrylonitrile component, a vinyl alcohol component, and a vinylidene halide component. 5. The crosslinkable resin cured product constituting the layer (4) consisting of a crosslinkable resin cured product is a crosslinkable resin selected from phenoxy ether type crosslinkable resin, epoxy resin, acrylic resin, melamine resin, phenol resin, or urethane resin. The electrode substrate for a liquid crystal display panel according to claim 1, which is a cured product of a resin. 6. The metal thin film layer constituting the transparent electrode (B) is made of gold, silver,
The electrode substrate for a liquid crystal display panel according to claim 1, comprising at least one metal selected from the group consisting of copper. 7. The transparent electrode (B) is a layer (
4) The electrode substrate for a liquid crystal display panel according to claim 1, which is provided on the electrode substrate.