Abstract: The present disclosure relates to a spline connection structure in which a shaft portion having teeth with crowned tooth surfaces formed at equal intervals on an outer circumferential surface and a cylindrical portion having grooves into which the teeth of the shaft portion are fitted formed on an inner circumferential surface are connected, wherein two adjacent tooth surfaces facing each other are bent while maintaining a constant distance therebetween in a tooth width direction when viewed from a diameter direction of the shaft portion.

Abstract: In a wobble removal shaft coupling device including a wobble removal gear having an internal gear with a first central axial line and an external gear meshing with the wobble removal gear and having a second central axial line. The first and second central axial lines are in parallel with and offset from each other, and the external gear teeth are identical in number to the internal gear teeth of the wobble removal gear. At least one of the two sets of the gear teeth are resiliently deformable in a circumferential and/or radial direction so as to allow the two gears to be meshing with each other while permitting an eccentric wobbling movement of the external gear relative to the internal gear without requiring a play or a sliding engagement. The wobble removal shaft coupling device can be incorporated in a hypocycloid reduction gear device.

Abstract: A liquid crystal display device including first and second substrates, a liquid crystal layer, a pixel electrode, a counter electrode, a first molecule orientation film formed on the first substrate so as to cover the pixel electrode, and a second molecule orientation film formed on the second substrate so as to cover the counter electrode. The pixel electrode includes first micro-electrode patterns extending in a first direction, second micro-electrode patterns extending in a second direction, third micro-electrode patterns extending in a third direction and fourth micro-electrode patterns extending in a fourth direction, wherein the first, second, third and fourth directions are different from one another.

Abstract: A liquid crystal display device including first and second substrates, and a liquid crystal layer sealed therebetween. The device also includes a first electrode formed on the first substrate and a second electrode formed on the second substrate; a first molecule orientation film formed on the first substrate so as to cover the first electrode; a second molecule orientation film formed on the second substrate so as to cover the second electrode; a plurality of micro structures associated with at least one of the first and second electrodes; and a plurality of rough structural patterns associated with at least one of the first and second electrodes. At least some of the micro structures extend generally parallel to each other, and the rough structural patterns extend in directions different from directions in which the micro structures extend.

Abstract: In a liquid crystal display device, liquid crystal molecules are oriented in a vertical direction to the first substrate and the second substrate by the first molecule orientation film and the second molecule orientation film, respectively, in a non-driving state. A structural pattern is formed so as to extend in a first direction parallel a surface of the liquid crystal layer and so as to form, in a driving state, an electric field periodically changing in a second direction that is parallel to the liquid crystal layer and vertical to the first direction. The liquid crystal molecules substantially tilt in the first direction in the driving state.

Abstract: A liquid crystal display device including first and second substrates, with a liquid crystal layer sealed therebetween. The device also includes a first electrode formed on the first substrate, a second electrode formed on the second substrate, a first molecule orientation film formed on the first substrate so as to cover the first electrode, a second molecule orientation film formed on the second substrate so as to cover the second electrode, and a plurality of micro structures associated with at least one of the first and second electrodes, wherein at least some of the micro structures extend generally parallel to each other. When a driving voltage is applied between the first and second electrodes, liquid crystal molecules of the liquid crystal layer are oriented such that no dark line occurs in a vicinity of the plurality of micro structures and no dark line occurs between adjacent micro structures.

Abstract: A liquid crystal display including a pair of substrates; a plurality of electrodes formed in a matrix on one of the pair of substrates, wherein each of the plurality of electrodes includes a plurality of stripe-like portions that define a plurality of spaces therebetween; polymer material and liquid crystal between the pair of substrates; and polymer alignment films which are formed on each of the substrates and are affected by light irradiation and cause alignment of the liquid crystal in predetermined directions. The plurality of stripe-like portions extend in at least two different directions which are not parallel to each other.

Abstract: In a liquid crystal display device, liquid crystal molecules are oriented in a vertical direction to the first substrate and the second substrate by the first molecule orientation film and the second molecule orientation film, respectively, in a non-driving state. A structural pattern is formed so as to extend in a first direction parallel to a surface of the liquid crystal layer and so as to form, in a driving state, an electric field periodically changing in a second direction that is parallel to the liquid crystal layer and vertical to the first direction. The liquid crystal molecules substantially tilt in the first direction in the driving state.

Abstract: A liquid crystal display has a pair of substrates with liquid crystal sealed between them. A polymer layer regulates directions in which the liquid crystal molecules tilt. A plurality of gate bus lines and a plurality of drain bus lines are provided on one of the substrates. Color filters and a pixel electrode are provided on the substrate. The pixel electrode includes a first sub-pixel electrode and a second sub-pixel electrode. A common electrode is provided on the other substrate. A first and a second thin film transistor are connected to the first sub-pixel electrode. The first thin film transistors is connected to a first gate bus line, and the second thin film transistor is connected to a second bus line.

Abstract: A liquid crystal display including two substrates arranged opposite to each other; a liquid crystal sealed between the substrates; and a polymer layer for regulating a pretilt angle of liquid crystal molecules and/or tilt directions at a time of driving. One of the substrates has a color filter layer formed on a side of the one substrate, and a plurality of stripe-like electrode patterns are provided on the color filter layer. The patterns are periodically arranged so that when polymerizable components mixed in the liquid crystal layer are polymerized to form the polymer layer while a voltage is applied to the liquid crystal layer between the electrode patterns and a second electrode on the other substrate, liquid crystal molecules in the liquid crystal layer are aligned in the extending directions of stripe-like electrode patterns.

Abstract: In a liquid crystal display device, liquid crystal molecules are oriented in a vertical direction to the first substrate and the second substrate by the first molecule orientation film and the second molecule orientation film, respectively, in a non-driving state. A structural pattern is formed so as to extend in a first direction parallel to a surface of the liquid crystal layer and so as to form, in a driving state, an electric field periodically changing in a second direction that is parallel to the liquid crystal layer and vertical to the first direction. The liquid crystal molecules substantially tilt in the first direction in the driving state.

Abstract: A substrate for a liquid crystal display device, including a pixel electrode formed on the substrate, wherein the pixel electrode includes a micro-cutout pattern defined by a plurality of micro-cutouts extending in four different directions with respect to an extension direction of a rough structural pattern. The substrate also includes a first electrode extending in a first direction, a second electrode extending in a second direction that is approximately perpendicular to the first direction, and a contact hole that electrically connects the pixel electrode and the first electrode. A portion of the rough structural pattern and/or a portion of the micro-cutout pattern overlap the first electrode. Also disclosed is a liquid crystal display device including such a substrate.

Abstract: In a liquid crystal display device, liquid crystal molecules are oriented in a vertical direction to the first substrate and the second substrate by the first molecule orientation film and the second molecule orientation film, respectively, in a non-driving state. A structural pattern is formed so as to extend in a first direction parallel to a surface of the liquid crystal layer and so as to form, in a driving state, an electric field periodically changing in a second direction that is parallel to the liquid crystal layer and vertical to the first direction. The liquid crystal molecules substantially tilt in the first direction in the driving state.

Abstract: A liquid crystal display device including first and second substrates, with a liquid crystal layer sealed therebetween; and first and second electrodes formed, respectively, on the first and second substrates. A first molecule orientation film is formed on the first substrate so as to cover the first electrode and a second molecule orientation film formed on the second substrate so as to cover the second electrode. A polarizer with a light absorption axis P is provided outside of the first substrate, and an analyzer with a light absorption axis A is provided outside of the second substrate. The light absorption axis A crosses the light absorption axis P. A plurality of micro structures are associated with at least one of the first and second electrodes, wherein the micro structures are obliquely arranged with respect to the light absorption axis P and the light absorption axis A.

Abstract: A liquid crystal display device includes an alignment sustaining layer formed of a photopolymerized material on each of surfaces of a pair of alignment films which are closer to a liquid crystal layer. The alignment sustaining layer is configured to regulate a pretilt azimuth of a liquid crystal molecule of the liquid crystal layer during absence of an applied voltage. A nematic liquid crystal material of the liquid crystal layer comprise a liquid crystal compound having a terphenyl ring system as an indispensable component, and the liquid crystal layer further comprises part of a photopolymerizable compound. A content of the photopolymerizable compound relative to the nematic liquid crystal material is less than 0.015 mol %.

Abstract: A liquid crystal display device, in which a liquid crystal layer is supported by a liquid crystal substrate, in which an orientation-controlling layer is formed on a surface of the liquid crystal substrate to regulate an orientation of liquid crystal molecules in the liquid crystal layer in the predetermined direction, and the orientation-controlling layer is formed by an incorporated additive added to the liquid crystal.

Abstract: A liquid crystal display has a pair of substrates with liquid crystal sealed between them. A polymer layer regulates directions in which the liquid crystal molecules tilt. A plurality of gate bus lines and a plurality of drain bus lines are provided on one of the substrates. Color filters and a pixel electrode are provided on the substrate. The pixel electrode includes a first sub-pixel electrode and a second sub-pixel electrode. A common electrode is provided on the other substrate. A first thin film transistor is connected to the first sub-pixel electrode, a second thin film transistor is connected to the second sub-pixel electrode, and a third thin film transistor is connected to the second sub-pixel electrode. The first and second thin film transistors are both connected to a first gate bus line, and the third thin film transistor is connected to a second bus line.

Abstract: A liquid crystal display includes a liquid crystal sealed between two substrates, and a polymer layer for regulating a pretilt angle of liquid crystal molecules and/or tilt directions at a time of driving. One of the substrates has a color filter layer formed on a side of the one substrate. A plurality of stripe-like electrode patterns are provided on the color filter layer. The patterns are periodically arranged so that when polymerizable components mixed in the liquid crystal layer are polymerized to form the polymer layer while a voltage is applied to the liquid crystal layer between the electrode patterns and a second electrode on the other substrate, liquid crystal molecules in the liquid crystal layer are aligned in the extending directions of stripe-like electrode patterns.

Abstract: A liquid crystal display device includes an alignment sustaining layer formed of a photopolymerized material on each of surfaces of a pair of alignment films which are closer to a liquid crystal layer. The alignment sustaining layer is configured to regulate a pretilt azimuth of a liquid crystal molecule of the liquid crystal layer during absence of an applied voltage. A nematic liquid crystal material of the liquid crystal layer comprise a liquid crystal compound having a terphenyl ring system as an indispensable component, and the liquid crystal layer further comprises part of a photopolymerizable compound. A content of the photopolymerizable compound relative to the nematic liquid crystal material is less than 0.015 mol %.

Abstract: A liquid crystal display in which a wide angle of view is obtained and a response time at a halftone can be shortened by regulating an alignment orientation of a liquid crystal by the use of a polymer fixation system in which a liquid crystal layer containing a polymerizable component is scaled between substrates. The polymerizable component is polymerized while a voltage is applied to the liquid crystal layer to fix a liquid crystal alignment. A plurality of stripe-like electrode patterns, in which a pattern width is formed to be wider than a width of a space, are arranged so that the liquid crystal molecules are aligned in a longitudinal direction of the pattern when the polymer is formed by solidifying a polymerizable component mixed in the liquid crystal layer while a voltage is applied to the liquid crystal layer.