Optical layered body and image display device

Abstract

Provided is an optical layered body which is extremely high in the stability of the antistatic performance, and has a stable surface resistance even after a durability test. The optical layered body includes an antistatic layer on one face of a light-transmitting substrate, wherein the antistatic layer is formed using a composition for an antistatic layer containing conductive fine particles, a resin component, and a solvent, and the resin component has no reactive functional groups in a molecule, and is soluble in the solvent and compatible with the conductive fine particles.

Claims

1. A liquid crystal display device, comprising: a transparent display comprising a liquid crystal display element and a polarizer on an image display element side of the liquid crystal layer; a lighting system for illuminating the liquid crystal display element from a back side; and an optical layered body comprising: a light-transmitting substrate; and an antistatic layer on one face of the light-transmitting substrate, wherein the optical layered body is on an image display side relative to the polarizer, the antistatic layer is formed from a composition containing conductive fine particles, a resin component, and a solvent, the molecules of the resin component have no reactive functional group, and the resin component is soluble in the solvent and compatible with the conductive fine particles, and the conductive fine particles are in a form of chain-like or needle-like aggregates that have a configuration where at least two pieces of the conductive fine particles are connected to form a linear or branched aggregate.

2. The liquid crystal display device according to claim 1, wherein, when a durability test (1) of exposing the optical layered body to a temperature of 80° C. for 500 hours or a durability test (2) of irradiating the optical layered body with xenon arc for 300 hours is conducted, a variation in surface resistance observed after the durability test (1) or the durability test (2), represented by (surface resistance after the test)/(surface resistance before the test), is within a range of 0.5 to 2.0.

3. The liquid crystal display device according to claim 1, wherein the resin component has a weight average molecular weight of 20,000 to 200,000, and a glass transition temperature of 80 to 120° C.

4. The liquid crystal display device according to claim 1, wherein the resin component is at least one selected from the group consisting of acrylic resins, cellulosic resins, urethane resins, vinyl chloride resins, polyester resins, polyolefin resins, polycarbonate, nylons, polystyrene, and ABS resins.

5. The liquid crystal display device according to claim 1, wherein the conductive fine particles are made of antimony-doped tin oxide (ATO), the resin component comprises polymethyl methacrylate, and the solvent comprises propylene glycol monomethyl ether.

6. The liquid crystal display device according to claim 1, wherein the optical layered body further comprises a hard coat layer arranged on a face on an opposite side of the antistatic layer with respect to the light-transmitting substrate.

7. The liquid crystal display device according to claim 6, wherein the hard coat layer comprises the same resin component as the antistatic layer.

8. The liquid crystal display device according to claim 6, wherein the hard coat layer comprises electrically conductive fine particles.

9. The liquid crystal display device according to claim 6, wherein the hard coat layer contains an ultraviolet ray absorbent.

10. The liquid crystal display device according to claim 9, wherein the amount of the ultraviolet ray absorbent is 3 to 15% by mass in the hard coat layer.

Description

DESCRIPTION OF EMBODIMENTS

(1) The present invention is described in more detail below with reference to, but not limited to, examples and comparative examples.

(2) The “part(s)” or “%” in the description is based on mass unless otherwise stated.

Example 1

Formation of Antistatic Layer

(3) HRAG acryl (25) MIBK (thermoplastic resin, polymethyl methacrylate resin, solids content: 25%, MIBK solution, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.) was dissolved in propylene glycol monomethyl ether. Then, V3560 (ATO dispersion, average particle diameter: 8 μm, produced by JGC Catalysts and Chemicals Ltd.) was added to the solution, followed by stirring, to adjust the final solids content to 8% and the ratio (mass ratio) of thermoplastic resin:ATO to 100:200. Thereby, a composition for an antistatic layer was prepared.

(4) The composition for an antistatic layer was applied to a light-transmitting substrate (PET substrate, T600E25N produced by Mitsubishi Plastics Inc.) by slit-reverse coating to form a coat such that the coat dried had a thickness of 0.3 μm. The coat was dried at a temperature of 70° C. for one minute to form an antistatic layer.

(5) (Formation of Hard Coat Layer)

(6) Irgacure 184 (4 parts by mass, photo polymerization initiator, produced by BASF Japan, Ltd.) was added to a mixed solvent containing methyl isobutyl ketone (MIBK) and isopropanol (IPA) and dissolved by stirring to prepare a solution having a final solids content of 25% by mass. To this solution were added, as resin components, pentaerythritol triacrylate (PETA) and HRAG acryl (25) MIBK (thermoplastic resin produced by DNP Fine Chemicals Co., Ltd.) at amass ratio of 70:30 in terms of the resin component to give a mixture. Then, 10-301 (TL) (produced by Dainichiseika Color & Chemicals Mfg. Co., Ltd.) as a leveling agent was added to the mixture in an amount of 0.2 parts by mass for 100 parts by mass of the resin components, followed by stirring. To this solution was added a bright dispersion (conductive fine particle dispersion, produced by DNP Fine Chemicals Co., Ltd., average particle diameter: 4.6 μm, solids content: 25%) in an amount of 100 g based on 12 kg of a composition for a hard coat layer (final composition), followed by stirring. Lastly, an ultraviolet absorber (TINUVIN 477, produced by BASF Japan, Ltd.) was added in an amount of 6 parts by mass for 100 parts by mass of the resin, and stirred to give a composition for a hard coat layer having a total solids content of 25%.

(7) The composition for a hard coat layer was applied to a surface of a separately prepared antistatic layer by slit-reverse coating to forma coat such that the amount of the coat dried was 6 g/m.sup.2. The coat was dried at a temperature of 70° C. for one minute, and was then irradiated with ultraviolet rays at an irradiation dose of 80 mJ/cm.sup.2 for curing to form a hard coat layer having a thickness of 5 μm. In this manner, an optical layered body was produced.

Example 2

(8) An optical layered body was produced in the same manner as in Example 1, except that the amount of the ultraviolet absorber in the composition for a hard coat layer was 3 parts by mass.

Example 3

(9) An optical layered body was produced in the same manner as in Example 1, except that the amount of the ultraviolet absorber in the composition for a hard coat layer was 10 parts by mass.

Example 4

(10) An optical layered body was produced in the same manner as in Example 1, except that the amount of the ultraviolet absorber in the composition for a hard coat layer was 15 parts by mass.

Example 5

(11) An antistatic layer was formed in the same manner as in Example 1, except that a thermoplastic resin having a weight average molecular weight of 50,000 and a glass transition temperature of 100° C. was used in place of the HRAG acryl (25) MIBK (thermoplastic resin, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.). Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Example 6

(12) An antistatic layer was formed in the same manner as in Example 1, except that a thermoplastic resin having a weight average molecular weight of 100,000 and a glass transition temperature of 100° C. was used in place of the HRAG acryl (25) MIBK (thermoplastic resin, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.). Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Example 7

(13) An antistatic layer was formed in the same manner as in Example 1, except that a thermoplastic resin having a weight average molecular weight of 70,000 and a glass transition temperature of 80° C. was used in place of the HRAG acryl (25) MIBK (thermoplastic resin, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.). Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Example 8

(14) An antistatic layer was formed in the same manner as in Example 1, except that a thermoplastic resin having a weight average molecular weight of 70,000 and a glass transition temperature of 110° C. was used in place of the HRAG acryl (25) MIBK (thermoplastic resin, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.). Next, a hard coat layer was formed in the same manner as in Example 1, except that the total solid content was 26%, to thereby give an optical layered body.

Example 9

(15) An antistatic layer was formed in the same manner as in Example 1, except that the ratio (mass ratio) of the thermoplastic resin:ATO was adjusted to 100:150. Next, a hard coat layer was formed in the same manner as in Example 1, except that the total solid content was 26%, to thereby give an optical layered body.

Example 10

(16) An antistatic layer was formed in the same manner as in Example 1, except that the ratio (mass ratio) of the thermoplastic resin:ATO was adjusted to 100:250. Next, a hard coat layer was formed in the same manner as in Example 1, except that the total solid content was 26%, to thereby give an optical layered body.

Example 11

(17) An antistatic layer was formed in the same manner as in Example 1, except that the thickness was changed to 0.2 μm. Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Example 12

(18) An antistatic layer was formed in the same manner as in Example 1, except that the thickness was changed to 0.5 μm. Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Example 13

(19) An antistatic layer was formed in the same manner as in Example 1. Next, a hard coat layer was formed in the same manner as in Example 1, except that the thickness was changed to 4 μm, to thereby give an optical layered body.

Example 14

(20) An antistatic layer was formed in the same manner as in Example 1. Next, a hard coat layer was formed in the same manner as in Example 1, except that the thickness was changed to 7 μm, to thereby give an optical layered body.

Comparative Example 1

(21) Irgacure 184 (4 parts by mass, photo polymerization initiator, produced by BASF Japan, Ltd.) was added to propylene glycol monomethyl ether (PGME) and dissolved by stirring to prepare a solution having a final solids content of 25% by mass. To this solution was added, as a resin component, pentaerythritol triacrylate (PETA) and stirred. Then, ATO was added to the solution in an amount that the ratio of PETA:ATO in a cured product was 100:200 and stirred to give a composition for an antistatic layer having a total solids content of 25%.

(22) The composition for an antistatic layer was applied to a light-transmitting substrate (PET substrate, T600E25N produced by Mitsubishi Plastics Inc.) by slit-reverse coating to form a coat such that the coat dried had a thickness of 0.3 μm. The coat was dried at a temperature of 70° C. for one minute, and was then irradiated with ultraviolet rays at an irradiation dose of 80 mJ/cm.sup.2 for curing to form an antistatic layer.

(23) Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Comparative Example 2

(24) An antistatic layer was formed in the same manner as in Comparative Example 1, except that dipentaerythritol hexaacrylate (DPHA) was used in place of the PETA. Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Comparative Example 3

(25) An antistatic layer was formed in the same manner as in Comparative Example 1, except that 1,6-hexane diol (HDDA) was used in place of the PETA. Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Comparative Example 4

(26) An antistatic layer was formed in the same manner as in Example 1, except that urethane acrylate (BS577, produced by Arakawa Chemical Industries, Ltd.) was used in place of the HRAG acryl (25) MIBK (thermoplastic resin, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.). Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Comparative Example 5

(27) An antistatic layer was formed in the same manner as in Comparative Example 1, except that a resin mixture containing HRAG acryl (25) MIBK and PETA at a resin ratio (mass ratio) of 1:1 was used in place of the PETA. Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Reference Example 1

(28) An antistatic layer was formed in the same manner as in Example 1. Next, a hard coat layer was formed in the same manner as in Example 1, except that no ultraviolet absorber was added, to thereby give an optical layered body.

Reference Example 2

(29) An antistatic layer was formed in the same manner as in Example 1. Next, a hard coat layer was formed in the same manner as in Example 1, except that the amount of the ultraviolet absorber was changed to 16 parts by mass, to thereby give an optical layered body.

Reference Example 3

(30) An antistatic layer was formed in the same manner as in Example 1, except that a thermoplastic resin having a weight average molecular weight of 10,000 and a glass transition temperature of 110° C. was used in place of the HRAG acryl (25) MIBK (thermoplastic resin, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.). Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Reference Example 4

(31) An antistatic layer was formed in the same manner as in Example 1, except that a thermoplastic resin having a weight average molecular weight of 70,000 and a glass transition temperature of 70° C. was used in place of the HRAG acryl (25) MIBK (thermoplastic resin, weight average molecular weight: 70,000, glass transition temperature: 100° C., produced by DNP Fine Chemicals Co., Ltd.). Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Reference Example 5

(32) An antistatic layer was formed in the same manner as in Example 1, except that the ratio (mass ratio) of the thermoplastic resin:ATO was adjusted to 100:50. Next, a hard coat layer was formed in the same manner as in Example 1, except that the total solid content was 26%, to thereby give an optical layered body.

Reference Example 6

(33) An antistatic layer was formed in the same manner as in Example 1, except that the ratio (mass ratio) of the thermoplastic resin:ATO was adjusted to 100:350. Next, a hard coat layer was formed in the same manner as in Example 1, except that the total solid content was 26%, to thereby give an optical layered body.

Reference Example 7

(34) An antistatic layer was formed in the same manner as in Example 1, except that the thickness was changed to 0.09 μm. Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Reference Example 8

(35) An antistatic layer was formed in the same manner as in Example 1, except that the thickness was changed to 1.2 μm. Next, a hard coat layer was formed in the same manner as in Example 1 to thereby give an optical layered body.

Reference Example 9

(36) An antistatic layer was formed in the same manner as in Example 1. Next, a hard coat layer was formed in the same manner as in Example 1, except that the thickness was changed to 2 μm, to thereby give an optical layered body.

Reference Example 10

(37) An antistatic layer was formed in the same manner as in Example 1. Next, a hard coat layer was formed in the same manner as in Example 1, except that the thickness was changed to 12 μm, to thereby give an optical layered body.

(38) The optical layered bodies obtained in the examples, the comparative examples, and the reference examples were evaluated for below-mentioned items. The optical layered bodies were evaluated immediately after they were produced (initial performance), after durability test (1) (storage at 80° C. for 500 hours), and after durability test (2) (exposure to xenon arc for 300 hours) for each item. With regard to the resistance of each optical layered body after the durability tests (1) and (2), the variation relative to the surface resistance immediately after the production (initial performance) represented by (surface resistance after the test)/(surface resistance before the test) was calculated. Table 1 shows the results of the optical layered bodies prepared in the examples. Table 2 shows the results of the optical layered bodies prepared in the comparative examples and the reference examples.

(39) (Transmittance, Haze)

(40) The transmittance (total light transmittance) and haze of each optical layered body were measured with a hazemeter (produced by Murakami Color Research Laboratory Co., Ltd., product number: HM-150) in accordance with JIS K-7361 (total light transmittance).

(41) (Resistance)

(42) The surface resistance of each optical layered body was measured with a HIRESTA-UP MCP-HT450 (produced by Mitsubishi Chemical Corporation, R probe, voltage application: 500V) (unit: Ω/□).

(43) (Adhesion)

(44) Each optical layered body was subjected to a cross-cut adhesion test. The ratio of the number of cuts remained on the substrate after peeling of a tape to the initial number (100) of cuts was evaluated based on the following criteria.

(45) Good: 90/100 to 100/100

(46) Acceptable: 50/100 to 89/100

(47) Poor: 0/100 to 49/100

(48) (Pencil Hardness)

(49) The pencil hardness of the surface, where the hard coat layer was formed, of each optical layered body was determined by a pencil hardness evaluation method in accordance with JIS K5600-5-4 (1999) at a load of 4.9 N. The test was performed with test pencils (hardness: 2B to 3H) defined in JIS S-6006 after two-hour humidity control at a temperature of 25° C. and a relative humidity of 60%.

(50) TABLE-US-00001 TABLE 1 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Initial Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 performance Total light transmittance (%) 89   89   89   89   89   89   89   89   Resistance (Ω/□) 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 Adhesion Good Good Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good Good Good Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 After test (1) Total light transmittance (%) 89   89   89   89   89   89   89   89   Resistance (Ω/□) 4.5 × 10.sup.8 4.5 × 10.sup.8 4.5 × 10.sup.8 4.5 × 10.sup.8 4.5 × 10.sup.8 4.5 × 10.sup.8 4.5 × 10.sup.8 4.5 × 10.sup.8 Resistance Variation 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Adhesion Good Good Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good Good Good Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 After test (2) Total light transmittance (%) 89   89   89   89   89   89   89   89   Resistance (Ω/□) 5.0 × 10.sup.8 5.5 × 10.sup.8 3.5 × 10.sup.8 5.0 × 10.sup.8 5.0 × 10.sup.8 5.0 × 10.sup.8 5.0 × 10.sup.8 5.0 × 10.sup.8 Resistance Variation 1.7 1.8 1.2 1.7 1.7 1.7 1.7 1.7 Adhesion Good Good Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good Good Good Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Initial Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 performance Total light transmittance (%) 90   88   90   88   89   89   Resistance (Ω/□) 5.0 × 10.sup.8 2.0 × 10.sup.8 5.0 × 10.sup.8 2.0 × 10.sup.8 2.0 × 10.sup.8 5.0 × 10.sup.8 Adhesion Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 After test (1) Total light transmittance (%) 90   88   90   88   89   89   Resistance (Ω/□) 7.0 × 10.sup.8 3.0 × 10.sup.8 7.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 7.0 × 10.sup.8 Resistance Variation 1.4 1.5 1.4 1.5 1.5 1.4 Adhesion Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 After test (2) Total light transmittance (%) 90   88   90   88   89   89   Resistance (Ω/□) 7.5 × 10.sup.8 3.5 × 10.sup.8 7.5 × 10.sup.8 3.5 × 10.sup.8 3.5 × 10.sup.8 7.5 × 10.sup.8 Resistance Variation 1.5 1.8 1.5 1.8 1.8 1.5 Adhesion Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good

(51) TABLE-US-00002 TABLE 2 Comparative Comparative Comparative Comparative Comparative Reference Reference Reference Example 1 Example 2 Example 3 Example 4 Example 5 Example 1 Example 2 Example 3 Initial Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 perfor- Total light transmittance (%) 89 89 89 89 89 89 89 89 mance Resistance (Ω/□) 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 3.0 × 10.sup.8 Adhesion Good Good Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good Poor Poor Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 After test Total light transmittance (%) 89 89 89 89 89 89 89 89 (1) Resistance (Ω/□) 2.0 × 10.sup.8 2.0 × 10.sup.8 2.0 × 10.sup.8 2.0 × 10.sup.8 2.0 × 10.sup.8 5.0 × 10.sup.8 4.5 × 10.sup.8 4.5 × 10.sup.8 Resistance Variation 0.67 0.67 0.67 0.67 0.67 1.7 1.5 1.5 Adhesion Good Good Good Good Good Good Good Good Pencil hardness Good Good Good Good Good Good Poor Poor Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 After test Total light transmittance (%) 89 89 89 89 89 89 89 89 (2) Resistance (Ω/□) 0.6 × 10.sup.8 0.5 × 10.sup.8 1.0 × 10.sup.8 0.8 × 10.sup.8 1.0 × 10.sup.8 7.5 × 10.sup.8 5.0 × 10.sup.8 5.0 × 10.sup.8 Resistance Variation 0.20 0.17 0.33 0.27 0.33 2.5 1.7 1.7 Adhesion Good Good Good Good Good Poor Good Good Pencil hardness Good Good Good Good Good Good Poor Poor Reference Reference Reference Reference Reference Reference Reference Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Initial Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 perfor- Total light transmittance (%) 89 90 85 90 85 89 89 mance Resistance (Ω/□) 3.0 × 10.sup.8 Over 1.0 × 10.sup.8 Over 1.0 × 10.sup.8 1.0 × 10.sup.8 Over Adhesion Good Good Acceptable Good Good Good Good Pencil hardness Poor Good Good Good Good Poor Good Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 After test Total light transmittance (%) 89 90 85 90 85 89 89 (1) Resistance (Ω/□) 4.5 × 10.sup.8 Over 1.5 × 10.sup.8 Over 2.0 × 10.sup.8 2.0 × 10.sup.8 Over Resistance Variation 1.5 Over 1.5 Over 2.0 2.0 Over Adhesion Good Good Poor Good Good Good Good Pencil hardness Poor Good Good Good Good Poor Good Durability Haze (%) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 After test Total light transmittance (%) 89 90 85 90 85 89 89 (2) Resistance (Ω/□) 5.0 × 10.sup.8 Over 1.5 × 10.sup.8 Over 2.0 × 10.sup.8 2.0 × 10.sup.8 Over Resistance Variation 1.7 Over 1.5 Over 2.0 2.0 Over Adhesion Good Good Poor Good Good Good Good Pencil hardness Poor Good Good Good Good Poor Good

(52) As shown in Table 1, the optical layered bodies prepared in the examples showed little change in the surface resistance before and after the durability tests, and were extremely high in the stability of the antistatic performance. They were also excellent in the evaluations of the haze, total light transmittance, adhesion, and pencil hardness.

(53) In contrast, as shown in Table 2, the optical layered bodies prepared in the comparative examples showed large change in the surface resistance before and after durability test (2), and had poor stability of the antistatic performance.

(54) The optical layered body prepared in Reference Example 5 in which the antistatic layer contained a small amount of the conductive fine particles, the optical layered body prepared in Reference Example 7 in which the antistatic layer was too thin, and the optical layered body prepared in Reference Example 10 in which the hard coat layer was too thick all had excessively high surface resistance and had insufficient antistatic properties. Optical layered bodies prepared in other reference examples showed little change in the surface resistance before and after the durability tests and were extremely high in the stability of the antistatic performance. However, none of them was excellent in all the evaluations of the haze, total light transmittance, adhesion, and pencil hardness.

INDUSTRIAL APPLICABILITY

(55) The optical layered body of the present invention can be suitably used for, for example, displays such as cathode ray tube (CRT) display devices, liquid crystal displays (LCD), plasma display panels (PDP), electroluminescence displays (ELD), touch panels, or electronic paper, and can be particularly suitably used for high definition image displays.