Abstract: A configuration of a stereoscopic display device that is capable of reducing luminance variation that occurs when a viewer moves is obtained, by making improvement regarding the angle dependency of luminance. A stereoscopic display device (1) includes: a display panel (10); a switch liquid crystal panel (20); a first polarizing plate (15); a second polarizing plate (24); a position sensor for acquiring position information of a viewer; and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with the position information, and causing the switch liquid crystal panel (20) to display the parallax barrier. The transmitting region has a width greater than a width in the alignment direction of an opening of each of the pixels (110).

Abstract: A configuration of a stereoscopic display device that is capable of maintaining crosstalk at a low level even when a viewer moves is provided. A stereoscopic display device (1) includes: a display panel (10) for displaying an image; a switch liquid crystal panel (20) that is arranged so as to be stacked on the display panel (10); a position sensor for acquiring position information of a viewer; and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with the position information, and causing the switch liquid crystal panel (20) to display the parallax barrier. The switch liquid crystal panel (20) includes: a liquid crystal layer (23) in which refractive index anisotropy ?n of liquid crystal molecules is 0.

Abstract: Obtained is a configuration of a stereoscopic display device wherein luminance variation and increase of crosstalk can be reduced over a period before and after the switching of the parallax barrier. The stereoscopic display device includes: a display panel for displaying an image with a plurality of pixels; a switch liquid crystal panel that is arranged so as to be stacked on the display panel; a position sensor for acquiring position information of a viewer; and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with the position information, with use of a predetermined barrier switching pitch as a minimum unit, and causing the switch liquid crystal panel to display the parallax barrier.

Abstract: There is provided a power converter that is operated by using a power supply of one system and effectively using a current flowing in a load. A charging operation that supplies a charging current and the like to a load 13 and a discharging operation that outputs a discharging current from the load 13 are performed by switching each semiconductor switch of a full-bridge circuit 12. A control section 15 controls all semiconductor switches of the full-bridge circuit 12 to be in an OFF state while switching the charging operation and the discharging operation, makes an inertia current generated by energy accumulated in inductors 27 and 28 flow from a circulation diode of the semiconductor switch that is in OFF-state to a first connection point of the full-bridge circuit 12, and supplies the inertia current to a control power supply section 14 or a DC fan 16 by the reverse flow prevention diode 18.

Abstract: A backlight unit includes LEDs, a light guide plate, a lenticular lens portion, a first prism sheet, and a second prism sheet. The lenticular lens portion includes cylindrical lenses that extend along a first direction and arranged parallel to one another along a second direction. The first prism sheet is disposed on a front side of the lenticular lens portion and includes first unit prisms arranged parallel to one another along the second direction and each extending along the first direction and having a triangular cross section. The second prism sheet is disposed between the lenticular lens portion and the first prism sheet. The second prism sheet includes second unit prisms arranged parallel to one another along the second direction and each extending along the first direction, having a triangular cross section, and having a vertex angle larger than a vertex angle of each first unit prism.

Abstract: A backlight unit includes LEDs, a light guide plate, a reflection sheet, a prism sheet, and an anisotropic reflection portion. The light guide plate includes a light entrance surface opposed to the LEDs and light exit surface. The reflection sheet includes a reflection surface opposed to an opposite plate surface of the light guide plate opposite from the light exit surface. The prism sheet is formed on a side of the light guide plate opposite from a side on which the reflection sheet is disposed. The prism sheet includes unit prisms that extend along a first direction and are arranged parallel to one another along a second direction. The anisotropic reflection portion includes unit reflectors disposed on the reflection surface of the reflection sheet. The unit reflectors extend along the first direction and are arranged parallel to one another along the second direction.

Abstract: A stereoscopic display device is provided where the luminance variation encountered when the parallax barrier is switched is reduced for viewing from a wide region. The stereoscopic display device includes: a display panel that displays an image; a switch liquid crystal panel disposed to overlie the display panel and including a liquid crystal layer; a position sensor that obtains positional information about a viewer; and a control unit that receives the positional information from the position sensor and locally applies to the liquid crystal layer a first voltage for rendering the switch liquid crystal panel translucent and a second voltage for rendering the switch liquid crystal panel non-translucent to display a parallax barrier that depends on the positional information.

Abstract: The objective is to provide a stereoscopic display device that is capable of preventing a malfunction of the touch panel while maintaining 3D capability. The device includes: a display panel (12); a switch liquid crystal panel (14); a touch panel (20); a driving circuit (16); and an RC circuit (18). The switch liquid crystal panel (14) is located on the front side of the display panel (12) and is capable of forming a parallax barrier (38). The touch panel (20) is located on the front side of the switch liquid crystal panel (14). The driving circuit (16) drives the switch liquid crystal panel (14) to form the parallax barrier (38). The RC circuit (18) is located between the switch liquid crystal panel (14) and the driving circuit (16). The driving circuit (16) drives the switch liquid crystal panel (14) using a voltage with an effective value of 3 volts or more.

Abstract: Disclosed is a stereoscopic display device that can reduce moiré that occurs due to light-shielding areas in the aperture of pixels. The stereoscopic display device includes a display panel and a parallax barrier. The display panel has a plurality of pixels and displays a stereoscopic image. In the parallax barrier, the direction in which transmissive and non-transmissive parts are alternately arranged is the first direction and the lengthwise direction of the non-transmissive parts is the second direction. There is a boundary that extends in the second direction between two pixels next to each other in the first direction. There are light-shielding areas in the aperture of each pixel. There is a space between the boundary and the light-shielding areas. Of two pixels next to each other in the second direction, the light-shielding areas in the aperture of one pixel are shifted in the first direction with respect to the light-shielding areas in the aperture of the other pixel.

Abstract: Provided is a stereoscopic display device capable of achieving good stereoscopic images with a low level of crosstalk in a wide area. A stereoscopic display device includes: a display panel; a switching liquid crystal panel arranged to overlap the display panel; a control section that controls the display panel and the switching liquid crystal panel; and a position sensor that obtains position information about a viewer and supplies the same to the control section. The display panel includes first pixel lines and second pixel lines that are arranged alternately in a vertical direction. The control section switches between a plurality of display modes including a tracking three-dimensional display mode.

Abstract: Provided is a stereoscopic display device via which a good stereoscopic image can be obtained with little crosstalk across a wide zone. A stereoscopic display device is provided with: a display panel that displays an image; a lens sheet, which is arranged in a superimposed manner on the display panel, and which separates an image displayed on the display panel into a right-eye image and a left-eye image in the horizontal direction; a control unit that controls the display panel; and a position sensor that acquires position information with respect to an observer and supplies the same to the control unit. The display panel includes first pixel rows and second pixel rows arranged alternately in a vertical direction. The control unit, according to the position information, causes either the first pixel rows or the second pixel rows to alternately display pixel data constituting the right-eye image and pixel data constituting the left-eye image in the horizontal direction.

Abstract: There is provided a power converter that is operated by using a power supply of one system and effectively using a current flowing in a load. A charging operation that supplies a charging current and the like to a load 13 and a discharging operation that outputs a discharging current from the load 13 are performed by switching each semiconductor switch of a full-bridge circuit 12. A control section 15 controls all semiconductor switches of the full-bridge circuit 12 to be in an OFF state while switching the charging operation and the discharging operation, makes an inertia current generated by energy accumulated in inductors 27 and 28 flow from a circulation diode of the semiconductor switch that is in OFF-state to a first connection point of the full-bridge circuit 12, and supplies the inertia current to a control power supply section 14 or a DC fan 16 by the reverse flow prevention diode 18.

Abstract: Provided is a switching liquid crystal panel and a display device that have novel structures that are capable of preventing luminous regions from appearing in the light transmitting parts, in the vicinities of boundaries thereof with the light shielding parts. The switching liquid crystal panel includes a pair of substrates (26a, 26b) having a twisted nematic type liquid crystal layer (24) interposed therebetween, and a plurality of light shield forming electrodes (30) that are formed on at least one of the pair of the substrates (26a, 26b) and that form light shielding parts (40) of a parallax barrier (16) in cooperation with a counter electrode (34) when a voltage is applied, the counter electrode (34) being is opposed to the light shield forming electrodes (30) with the liquid crystal layer (24) interposed therebetween.

Abstract: A method of manufacturing the liquid crystal display device (display device) includes: a step of coating a liquid adhesive material on at least one of opposing surfaces of a liquid crystal display panel (display panel) that displays images or a parallax barrier panel (function panel) to be stacked onto the liquid crystal display panel; a step of attaching the liquid crystal display panel to the parallax barrier panel through an adhesive material; and a step of partial curing in which an overlapping portion of the adhesive material overlapping in a plan view an outer edge portion of at least one of the liquid crystal display panel and the parallax barrier panel is cured.

Abstract: The objective is to provide a stereoscopic display device that is capable of preventing a malfunction of the touch panel while maintaining 3D capability. The device includes: a display panel (12); a switch liquid crystal panel (14); a touch panel (20); a driving circuit (16); and an RC circuit (18). The switch liquid crystal panel (14) is located on the front side of the display panel (12) and is capable of forming a parallax barrier (38). The touch panel (20) is located on the front side of the switch liquid crystal panel (14). The driving circuit (16) drives the switch liquid crystal panel (14) to form the parallax barrier (38). The RC circuit (18) is located between the switch liquid crystal panel (14) and the driving circuit (16). The driving circuit (16) drives the switch liquid crystal panel (14) using a voltage with an effective value of 3 volts or more.

Abstract: The objective is to provide a stereoscopic display device that can be switched among 2D display mode, 3D display mode and mirror mode. The device includes: a display panel (12); a switch liquid crystal panel (14); an absorptive polarizer (16); and a reflective polarizer (22). The switch liquid crystal panel (14) is located closer to the viewer than the display panel (12) is. The absorptive polarizer (16) is located closer to the viewer than the switch liquid crystal panel (14) is. The reflective polarizer (22) is located between the display panel (12) and the switch liquid crystal panel (14). The reflective polarizer (22) has a transmission axis (L6) perpendicular to the transmission axis (L3) of the absorptive polarizer (16) and passes those components of light entering the reflective polarizer (22) that are parallel to the transmission axis (L6) while reflecting those components that are perpendicular to the transmission axis (L6).

Abstract: The objective is to provide a stereoscopic display device that can be switched among 2D display mode, 3D display mode and mirror mode, where 2D display may be realized even while the device is staying in mirror mode. The device includes: a display panel (12); a switch liquid crystal panel (14); an absorptive polarizer (16); and a reflective polarizer (22). The switch liquid crystal panel is located closer to the viewer than the display panel is. The absorptive polarizer is located closer to the viewer than the switch liquid crystal panel is. The reflective polarizer is located between the display panel and the switch liquid crystal panel. The reflective polarizer passes those components of light entering the reflective polarizer that are parallel to the transmission axis (L6) while reflecting those components that are perpendicular to the transmission axis. At least one of the substrates (32, 34) includes a transparent region (58) capable of passing light from the display panel.

Abstract: An objective is to provide a stereoscopic display device that can reduce moire occurring when the viewer is not at the optimum viewing position while maintaining the vertical degree of freedom. A parallax barrier (42) includes transparent portions (48) and light-shielding portions (46) arranged alternatingly. Supposing that a first direction is a direction in which the light-shielding portions (46) and the transparent portions (48) are arranged alternatingly and a second direction is a longitudinal direction of the light-shielding portions (46), a boundary portion (52) is present between two adjacent pixels (50) arranged in the first direction and extends in the second direction, and the edges (381, 382) of the light-shielding portions (46) disposed in the first direction have portions crossing a reference line (L) extending in the second direction and fluctuate in a specified cycle along the second direction.

Abstract: The present invention provides a display panel with a front plate and a display device which exhibit improved display qualities with suppressed air bubbles and display unevenness in and around a display region, and sufficiently suppress peeling of the front plate from the display panel.

Abstract: An arrangement with a shared polarizer disposed between two panels capable of displaying a 3D image using parallax barrier techniques is provided, where the quality of a displayed 3D image is prevented from decreasing due to the left-right imbalance in contrast ratio. The arrangement includes: a main panel; a switch panel for displaying a slit image serving as a parallax barrier; a polarizer located closer to the viewed side of the main panel; a polarizer located between the main panel and the switch panel; and a polarizer located closer to the side of the switch panel opposite the side closer to the main panel. The direction of rubbing for one of the alignment films of the switch panel is at an angle relative to the absorption axis of one of the polarizers such that a contrast ratio within a view range of the left and right eyes is equal to or higher than a reference value, the contrast ratio being measured on a visual line corresponding to the transmission axis of one of the polarizers.