Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers. e 3 ? Y 2 × j .

Abstract: A reflective liquid crystal display panel is a display panel for three-dimensional display in which pixel pairs as display elements composed of one left-eye pixel L and one right-eye pixel R each are provided in a matrix. The lenticular lens is an optical member for image separation that is provided to separate the light from the left and right pixels, and numerous lenticular lenses form a lens array that is arranged in one dimension. An anisotropic scattering sheet as an anisotropic scattering element is provided between the lenticular lens and the reflective liquid crystal display panel. According to this configuration, a reduction in the quality of the reflective display can be minimized, and improved image quality can be achieved without changing the concavo-convex structure of the reflecting panel and the lens shape of the lenticular lens in display device that is capable of displaying different images to a plurality of viewpoints.

Abstract: In a formation method for forming a fine structure in a workpiece (30) containing an etching control component, using an isotropic etching process, a mask (32, 34) having an opening (36) is applied to the workpiece, and the workpiece is etched with an etching solution (38) to thereby form a recess (40), corresponding to a shape of the opening, in a surface of the workpiece. The etching of the workpiece is stopped due to the etching control component eluted out of the workpiece in the etching solution within the recess during the isotropic etching process.

Abstract: In a display panel, a plurality of pixel sections are arranged in the form of a matrix. Each of the pixel sections includes a pixel for displaying an image for the left eye and a pixel for displaying an image for the right eye. Lenticular lens having repeated convex surfaces is disposed in front of the display panel to deflect the light emitted from each pixel in the horizontal direction from the pixel for displaying the image for the left eye to the pixel for displaying the image for the right eye in each pixel section. Reflection plate reflects the exterior light toward the display panel and has surface projections on the surface. In this case, the focal distance f of the lens is different from the distance H between the surface of the reflection plate and the apex of the lens.

Abstract: In the liquid crystal display device of the present invention, a circular polarizer is provided to each of a pair of substrates that hold a liquid crystal layer, wherein the circular polarizer on the display surface side is composed of a polarizer, ?/2 plate in which Rth>0, and a ?/4 plate in which Rth<0; and the circular polarizer on the backlight side is composed of a polarizer, a ?/2 plate in which Rth<0, and a ?/4 plate in which Rth>0. Rth is a retardation in the thickness direction of a ?/2 plate or a ?/4 plate. A reduction is achieved in the absolute value of the sum of the Rth between the ?/2 plate for which Rth>0 and the ?/2 plate for which Rth<0, and in the absolute value of the sum of the Rth between the ?/4 plate for which Rth<0 and the ?/4 plate for which Rth>0.

Abstract: In a display panel, a plurality of pixel sections are arranged in the form of a matrix. Each of the pixel sections includes a pixel for displaying an image for the left eye and a pixel for displaying an image for the right eye. Lenticular lens having repeated convex surfaces is disposed in front of the display panel to deflect the light emitted from each pixel in the horizontal direction from the pixel for displaying the image for the left eye to the pixel for displaying the image for the right eye in each pixel section. Reflection plate reflects the exterior light toward the display panel and has surface projections on the surface. In this case, the focal distance f of the lens is different from the distance H between the surface of the reflection plate and the apex of the lens.

Abstract: A light source device has a transparent/scattering state switching element for switching the range of irradiation angles, and liquid crystal molecules and dichroic dye molecules are dispersed in a polymer matrix in the PDLC layer of the transparent/scattering state switching element. The range of irradiation angles can thereby be switched, and the color can be prevented from changing when the radiation angle is switched.

Abstract: A plurality of pixels is arranged periodically in the x-axis direction and the y-axis direction in the display panel of a display device, and because light is blocked by the portion other than the open part in each pixel, the display panel has a two-dimensional lattice structure. The pixels are rectangular, and the length Px of the long edges in the x direction is larger than the length Py of the short edges in the y direction. A louver, in which transparent regions and non-transparent regions are arranged periodically in a one-dimensional direction, is provided on the display panel, and the angle formed by the x axis and the one-dimensional period direction of the louver is 45 degrees or less, and preferably 10 degrees or less. This configuration makes it possible to obtain an optical element having high directivity, reduced moiré, and high transmittance. It is also possible to obtain a display device having excellent display quality into which the optical element is incorporated.

Abstract: A light source apparatus has two or more light sources that have different light-emission spectra and that can be controlled independently, and also has light sensors for detecting the quantity of light emitted by the light sources. The light sensors are composed of one type of light sensor that is not provided with a color filter for selecting the wavelength of received light, and the light sensors are sensitive to wavelength ranges that are sufficiently broad to simultaneously receive light in red, green, and blue wavelength ranges. A control circuit controls the two or more light sources to emit light in a time sequential fashion, and compares reference data with the output values of the light sensors to control the quantity of light emitted by the light sources by means of a light source drive circuit. It is thereby possible to reduce the cost and size of a light source apparatus that is capable of correcting changes in hue.

Abstract: A display device is composed of a light source device and a transmissive liquid crystal display panel, and the light source device is provided with a transparent/scattering switching element capable of switching between states in which incident light is transmitted or scattered. Pixels for displaying are disposed in the form of a matrix in the transmissive liquid crystal display panel, and the need for another power supply and signals for the transparent/scattering switching element is eliminated by driving the transparent/scattering switching element using the signals and power supply for driving the pixels. The drive power source of the transparent/scattering switching element for controlling scattering can be made smaller and less costly in a display device that is capable of switching the range of viewing angles.

Abstract: In a liquid crystal display device, a liquid crystal layer is provided between a principal substrate and an opposing substrate that are disposed so as to face each other, and a shared electrode and a pixel electrode, which is a parallel electrode pair formed in the shape of a comb, are formed on the surface of the principal substrate that faces the opposing substrate. Orientation films are also formed on the opposing surfaces of the principal substrate and the opposing substrate. The electrodes of the parallel electrode pair are formed so that the width thereof is smaller than the thickness of the liquid crystal layer.

Abstract: In a display device equipped with a light source device, a second light-guide member is provided to the back surface of a first light-guide member that has an emitted light control sheet provided to the front surface thereof. The emitted light control sheet is composed of a flat plate portion and protrusions. A first light source mounted to a side surface of the first light-guide member, and a second light source mounted to a side surface of a second light-guide member are switched and turned on. The emitted light control sheet has light-condensing effects when the first light source is on, and has diffusing effects when the second light source is turned on. The angle range of illuminating light can thereby be switched.

Abstract: In a display device, white LEDs and bluish white LEDs are arranged in alternating fashion on the light-incident surface side of a light-guide plate. On the light-exit side of the light-guide plate is disposed a transparent/scattering switching element switchable between a state of scattering incident light, and a state of transmitting light unchanged without scattering. During a narrow-angle display, only the white LEDs are lit, and the transparent/scattering switching element is placed in the transparent state, while during a wide-angle display, both the white LEDs and the bluish white LEDs are lit, and the transparent/scattering switching element is placed in the scattering state.

Abstract: A display device is provided with a light source, an light-guide plate, a prism sheet, a transparent/scattering state switching element, and a transmissive liquid crystal display panel. In the transparent/scattering state switching element, two transparent substrates are provided parallel to and separated from each other, and an electrode is provided to the surface of each transparent substrate. A scattering seal member is also provided between external peripheral portions of the transparent substrates, and a PDLC layer is enclosed in a space sealed by the scattering seal member between the transparent substrates. The scattering seal member is endowed with scattering properties whereby incident light is transmitted in a scattered state, and the degree of scattering thereof is equal to the degree of scattering of the PDLC layer during the scattering state.

Abstract: In a method for driving a liquid crystal display apparatus in which in each field, scan lines are successively scanned in order to display an image, the scanning sequence or the polarity of a signal voltage is reversed between a first field and a second field. A liquid crystal display apparatus driven by the method is also disclosed. It is possible to provide a high contrast, high brightness liquid crystal display apparatus which is not affected by electrical asymmetry.

Abstract: A planar light source, Fresnel lens sheet, and louver are disposed in the stated order in a light source apparatus. The Fresnel lens sheet deflects and focuses in one dimension light that has entered from the planar light source. The louver is disposed in the optical path of the light emitted from the Fresnel lens sheet, and the directivity of the light can be increased by restricting the traveling direction of the light to the focal direction of the Fresnel lens sheet. The light utilization ratio can thereby be increased, the directivity of planarly emitted light can be increased, and the brightness can be made uniform at the point of observation.

Abstract: A display device comprising a light source and having an optical waveguide, a louver, an anisotropic scattering sheet, and a transmissive liquid crystal panel disposed along the path of light emitted from the light source. The light-restricting direction of the louver is tilted at an angle ? from the Y-axis direction. The value of the angle ? is set so that the arrangement direction of moiré created between the louver and the liquid crystal panel approaches the X-axis direction. A plurality of belt-shaped convex portions extending in the Y-axis direction are formed on the surface of the anisotropic scattering sheet, and are configured so that the scattering direction of the light has anisotropy. Specifically, scattering in the X-axis direction is increased, and scattering in the Y-axis direction is reduced. Moiré can thereby be reduced in a display device having increased directivity of the display.

Abstract: A 3D image/2D image switching display apparatus is provided with a liquid crystal display unit and first and second lenticular lenses. To display a 3D image, the first lenticular lens is arranged in such a way that the optical axis of the first lenticular lens coincides with the optical axis of the second lenticular lens so that pixels for a left eye display an image for a left eye and pixels for a right eye display an image for a right eye. To display a 2D image, the first lenticular lens is arranged in such a way that the optical axis of the first lenticular lens is shifted from the optical axis of the second lenticular lens by half a lens pitch so that the pixels for the left eye and the pixels for the right eye display the same image independently.

Abstract: In an image display device where a lenticular lens, a display panel, and a light source are provided in order from a viewer side, when cylindrical lenses of the lenticular lens are arrayed in a horizontal direction, in first-viewpoint pixels and second-viewpoint pixels of the display panel, openings whose sides which intersect with straight lines in the horizontal direction are not parallel to a vertical direction are formed. And, a shape of the openings of a pair of pixels mutually adjacent in the vertical direction is made line-symmetric with respect to edges of the pixels extending in the horizontal direction as an axis.

Abstract: In a liquid crystal display apparatus, one display pixel has a total of six sub pixels, namely, a red sub pixel for a left eye, a green sub pixel for the left eye, a blue sub pixel for the left eye, a red sub pixel for a right eye, a green sub pixel for the right eye, and a blue sub pixel for the right eye. Those sub pixels are arranged in a square area, two in a horizontal direction along which gate lines extend, three in a vertical direction along which data lines extend. The polarity of the data lines with respect to a potential of a common electrode is inverted every time three gate lines are scanned and every frame.