摘要:
A transmissive liquid crystal diffraction element includes a rod-like liquid crystal layer where a rod-like liquid crystal compound is aligned and a disk-like liquid crystal layer where a disk-like liquid crystal compound is aligned that are alternately laminated, in which each of the liquid crystal layers has a predetermined liquid crystal alignment pattern, rotation directions of optical axes in the liquid crystal alignment patterns are the same, single periods of the liquid crystal alignment patterns are the same, a thickness direction retardation |Rth| of each of the liquid crystal layers is 65 nm or less, and at an interface between the liquid crystal layers, longitudinal directions of the liquid crystal compounds match with each other.
摘要:
A liquid crystal retardation film, a polarizing plate for light emitting displays including the same, and a light emitting display including the same are provided. The liquid crystal retardation film includes: a first retardation layer having no alignment layer, a UV absorbent primer layer, and a second retardation layer sequentially formed in the stated order, wherein each of the first retardation layer and the second retardation layer may be a liquid crystal layer.
摘要:
A transmissive liquid crystal diffraction element includes a rod-like liquid crystal layer where a rod-like liquid crystal compound is aligned and a disk-like liquid crystal layer where a disk-like liquid crystal compound is aligned that are alternately laminated, in which each of the liquid crystal layers has a predetermined liquid crystal alignment pattern, rotation directions of optical axes in the liquid crystal alignment patterns are the same, single periods of the liquid crystal alignment patterns are the same, a thickness direction retardation |Rth| of each of the liquid crystal layers is 65 nm or less, and at an interface between the liquid crystal layers, longitudinal directions of the liquid crystal compounds match with each other.
摘要:
The present invention provides a liquid crystal display method capable of, when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees.
摘要:
The present invention provides a method for improving visibility of an image display device which is capable of providing an image display device excellent in anti-reflection properties and bright-field contrast even using an optical layered body including a light-transmitting substrate having in-plane birefringence, such as a polyester film. The method of the present invention is a method for improving visibility of an image display device that has an optical layered body including a light-transmitting substrate having in-plane birefringence and an optical functional layer disposed on one surface of the substrate. The method includes the step of disposing the optical layered body such that the slow axis showing a greater refractive index of the light-transmitting substrate is in parallel with the vertical direction of a display screen of the image display device.
摘要:
The invention provides an autostereoscopic display device having an adjuster for adjusting the direction of a light beam (5). The adjuster (1) has an off-state and on-state and comprises a stack (10) of layers. The stack (10) comprises a first solid material layer (100) having a first optic axis (111), a second solid material layer (200) having a second optic axis (211), and switchable birefringent twisted nematic liquid crystal material (30) or chiral nematic liquid crystal material. Further, the stack includes a first interface (130) between the first solid material layer (100) and birefringent material (30) and a second interface (230) between the second solid material layer (200) and birefringent material (30). In the off-state, the birefringent material (30) at the first interface (130) is configured to have an optic axis parallel to the first optic axis (111) and the birefringent material (30) at the second interface (230) is configured to have an optic axis parallel to the second optic axis (211). In the on-state, the birefringent material (30) at the first interface (130) is configured to have an optic axis perpendicular to the first optic axis (111) and the birefringent material (30) at the second interface (230) is configured to have an optic axis perpendicular to the second optic axis (211).
摘要:
A liquid crystal panel which is capable of significantly reducing a thickness thereof as compared to conventional liquid crystal panels, and, when used in a liquid crystal display device using a liquid crystal cell such as an IPS-type liquid crystal cell, reducing oblique light leakage in a black state of the liquid crystal display device to enhance contrast.
摘要:
According to one embodiment, a liquid crystal display device includes a liquid crystal layer, a first substrate and a second substrate. The first substrate includes a light reflection type of first pixel electrode and a first alignment film. The second substrate includes a counter-electrode and a second alignment film. A first alignment treatment direction is inclined in a second direction of rotation at an angle of 110° to 130° with respect to in a second alignment treatment direction. A liquid crystal material is used which contains an optically active substance which gives liquid crystal molecules a twisting force from the second alignment film toward the first alignment film in the second direction of rotation.
摘要:
Optical film stacks are described. More particularly, optical film stacks including a half-wave retardation layer are described. Achromatic half-wave retardation layers, including achromatic half-wave layers formed from a quarter-wave and a three-quarters-wave retardation layer, are described. Film stacks including reflective polarizers tuned to reduce wavelength dispersion of the half-wave retardation layer are also described.
摘要:
An optical fiber flexible multi-wavelength filter based on a polarization-diversity loop includes a pair of high-birefringence optical fibers, a polarization beam splitter connected to the pair of high-birefringence optical fibers and dividing light incident from a broadband light source into two polarized beams, and a polarization controller connected to the high-birefringence optical fibers or the polarization beam splitter and controlling the two polarized beams divided by the polarization beam splitter. The polarization controller includes a ½ wave plate or a ¼ wave plate, and the polarization controller disposed between the high-birefringence optical fibers controls an angle difference between principal axes of the high-birefringence optical fibers and visibility. Interference in the high-birefringence optical fibers is controlled via changing polarized light incident from the broadband light source using the polarization controller.