Films having a high transmittance and matt property

A polarizing plate in a display device, having a high transmittance and matt property, comprising a polarizing layer and two protective films thereon, wherein at least one of the protective films is a film having a high transmittance and matt property, wherein a matted layer is disposed at the opposite side to the polarizing layer, wherein:

• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device;
• or
• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device,
• wherein the particles are monodispersed transparent fine particles formed from a resin having a Moh's scale of hardness of less than 7;
• or
• the film having a high transmittance and matt property comprises on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device,
• wherein the particles are monodispersed transparent fine particles formed from a resin having a Moh's scale of hardness of less than 7, and wherein said low-refractive-index layer has a coefficient of kinetic friction of 0.15 or less.

A liquid crystal display device, comprising the film having a high transmittance and matt property, wherein:

• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m 2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device;
• or
• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device,
• wherein the particles are monodispersed transparent fine particles formed from a resin having a Moh's scale of hardness of less than 7;
• or
• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device,
• wherein the particles are monodispersed transparent fine particles formed from a resin having a Moh's scale of hardness of less than 7, and wherein said low-refractive-index layer has a coefficient of kinetic friction of 0.15 or less.

A liquid crystal display device, comprising two polarizing plates provided on both sides of a liquid crystal cell, wherein the polarizing plate provided at the back light side is a polarizing plate having a high transmittance and matt property, the matted layer being disposed toward the back light side, wherein the polarizing plate having a high transmittance and matt property comprises a polarizing layer and two protective films thereon, wherein at least one of the protective films is a film having a high transmittance and matt property, wherein a matted layer is disposed at the opposite side to the polarizing layer, wherein:

• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device;
• or
• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device,
• wherein the particles are monodispersed transparent fine particles formed from a resin having a Moh's scale of hardness of less than 7;
• or
• the film having a high transmittance and matt property comprises, on a transparent support,
• (a) a hard coat layer comprising a cross-linked binder polymer and particles incorporated therein, wherein the particles have a particle size of from 1.0 to 10 μm that is larger than the thickness of the hard coat layer thereby providing a concavo-convex structure, wherein said particles are set in contact with the transparent support, wherein a density of the particles is in a range of from 100 to 5000 particles/m2, and wherein the particles are monodispersed transparent fine particles having a particle size distribution of 0.2 or less in terms of coefficient of variation, and
• (b) a low-refractive-index layer having a refractive index of 1.45 or less and a coefficient of kinetic friction of 0.2 or less, wherein the low-refractive-index layer covers said hard coat layer so as to maintain said concavo-convex structure formed by said particles incorporated in the hard coat layer, and wherein said low-refractive-index layer comprises a fluorine-containing macromolecular compound that is cross-linked by heat or ionization radiation,
• wherein the film shows a haze value of 1.0% or more, and a total transmittance of light of 93.5% or more,
• whereby occurrence of non-uniformity of brightness due to light interference is prevented by virtue of the high transmittance and matt property of the film, when the concavo-convex structure of a surface of the film is contacted with a smooth surface of a layer in a display device,
• wherein the particles are monodispersed transparent fine particles formed from a resin having a Moh's scale of hardness of less than 7, and wherein said low-refractive-index layer has a coefficient of kinetic friction of 0.15 or less.