Polarizing plate, display, and electronic apparatus
View Patent ↗The present invention provides a polarizing plate including: a layer of polarizer for polarizing incident light and emitting the polarized light; and a coating type optically anisotropic layer disposed on the side to which the polarized light is emitted from the polarizer layer.
1. A polarizing plate comprising:
a polarizer layer that polarizes incident light and emits the polarized light from one side thereof;
an optically anisotropic layer disposed on the side of the polarizer layer from which the polarized light is emitted; and
a molecule fixing layer which is a film in contact with the optically anisotropic layer and that controls an order parameter of the optically anisotropic layer so that orientations of molecules constituting the optically anisotropic layer are fixed in a random state or in an intermediate state between the random state and an aligned state.
2. The polarizing plate according to claim 1 , comprising:
a first base layer;
the polarizer layer disposed over the first base layer;
a second base layer disposed over the polarizer layer;
the molecule fixing layer disposed over the second base layer;
the optically anisotropic layer disposed over the molecule fixing layer; and
a protective layer disposed over the optically anisotropic layer.
3. The polarizing plate according to claim 1 , comprising:
a first baser layer;
the polarizer layer disposed over the first base layer;
the optically anisotropic layer disposed over the polarizer layer;
the molecule fixing layer disposed over the optically anisotropic layer; and
a second base layer disposed over the molecule fixing layer.
4. The polarizing plate according to claim 1 , wherein retardation represented by the product of the double refractive index of the molecules in the optically anisotropic layer and the thickness of the optically anisotropic layer is in the range of 100 to 200 nm or in a range of an odd number times the range.
5. A display comprising:
a first substrate and a second substrate between which a liquid crystal is sealed to form a liquid crystal layer;
a first polarizing plate disposed on the counter-liquid-crystal-layer side of the first substrate;
a second polarizing plate disposed on the counter-liquid-crystal-layer side of the second substrate; and
a backlight disposed on the counter-liquid-crystal-layer side of the first polarizing plate;
wherein the second polarizing plate includes:
a polarizer layer which linearly polarizes incident light coming from the liquid crystal layer side and emits the linearly polarized light from one side thereof to a display surface side,
an optically anisotropic layer disposed on the side of the polarizer layer from which the linearly polarized light is emitted, and
a molecule fixing layer which is a film in contact with the optically anisotropic layer and that controls an order parameter of the optically anisotropic layer so that orientations of molecules constituting the optically anisotropic layer are fixed in a random state or in an intermediate state between the random state and an aligned state.
6. An electronic apparatus comprising:
a display incorporating a polarizing plate on an image display surface side; wherein the polarizing plate includes:
a polarizer layer that polarizes incident light and emits the polarized light from one side thereof to the display surface side,
an optically anisotropic layer disposed further on the display surface side relative to the polarizer, and
a molecule fixing layer which is a film in contact with the optically anisotropic layer and that controls an order parameter of the optically anisotropic layer so that orientations of molecules constituting the optically anisotropic layer are fixed in a random state or in an intermediate state between the random state and an aligned state.