Abstract: An optical filter for a liquid crystal display device, consisting of a polymer film which has two types of layers having different refractive index which exist alternately in a laminated state, in which a difference of refractive index between two types of layers is in the range between 0.01 and 0.1, an average thickness of each layer is at least 0.8 .mu.m and less than 2 .mu.m, and a thickness of the polymer film is in the range between 10 to 300 .mu.m, which filter can widen an angle of view of the liquid crystal display is greatly without the improvement of the liquid crystal cell, change of an addressing system or modification of the liquid crystal itself.

Abstract: A lighting system has a light source (2), a liquid crystal dimmer plate (4) for scattering a desired quantity of light from the light source (2), and a control power supply (5) for controlling a light scattering rate or effect of the liquid crystal dimmer plate (4). A light component transmitted through the liquid crystal dimmer plate (4) can be controlled by controlling the scattering effect of the dimmer plate (4). The so controlled light can be used as an illuminating light for a camera for example.

Abstract: The commercial production of DHF cells, in particular a colored DHF display cell, has scarcely become established to date. This is because in particular such cells based on the known prior art expediently must possess a liquid crystal layer having a thickness d of about 1.4 to 2.8 .mu.m, which requires an expensive and complex production process. On the basis of the knowledge that the mean value of the refractive index of a DHF display can be described with that of a birefringent plate, it has now been found that the magnitude of the birefringence .DELTA.n changes significantly within a voltage range typical for DHF cells, in particular for DHF displays having a large switching angle .alpha.. The present invention therefore relates to the utilization of this second effect of the voltage dependence of .DELTA.n, with the object of substantially facilitating the production of DHF displays.

Abstract: An imaging system that can tolerate high intensity optical beams without a reduction in the system's field-of-view, comprises an imager, a fiber array positioned at the image plane of the imager, a sensor array positioned at the output end of the fiber array, a panel display positioned in proximity of the fiber array and an image processor for electronically processing the information from the sensor array.

Abstract: The invention is in the field of retardation layers comprising high-molecular weight liquid-crystalline material for liquid-crystalline displays. The invention is directed to a retardation layer for a liquid-crystalline display comprising high-molecular weight liquid-crystalline material, wherein the dispersion has been adapted to that of the active liquid-crystalline cell by varying the mesogenic groups of the high-molecular weight liquid-crystalline material, so that the difference in dispersion between the active cell and the retardation layer in the wavelength area of 400-800 nm is not more than 0.1.

Abstract: A so-called in-plane electric field type color liquid crystal display device employs the following configuration in order to minimize smear. Groups of row-direction arrayed unit pixels are staggered one-half pitch of the unit pixels from the adjacent row-direction arrayed unit pixel groups. Three adjoining unit pixels are selected from two adjacent row-direction arrayed unit pixel groups so that they straddle these two unit pixel groups, and the three selected adjoining unit pixels are assigned three primary colors respectively.

Abstract: An active matrix display device for suppressing voltage variation .DELTA.V due to off-operation of a gate pulse, including TFTs and picture-element electrodes, at least one of the TFTs being assigned to each picture element, and each of the TFTs having a gate electrode connected to a gate line (first gate line), and a source and a drain one of which is connected to a data line, wherein a picture-element electrode concerned is formed so as to be overlapped with the first gate line through an insulator, and also so as to be overlapped through an insulator with a gate line other than the first gate line or a wiring disposed in parallel to the first gate line.

Abstract: A light source optical system for projection 1, dichroic mirrors 21, 22 disposed to have a predetermined included angle .beta., a reflection type liquid crystal optical element blocks 31-33 each including a closely contacted converging lens and having a reflection surface and a projection optical system 4 are provided, wherein the normal line of a dichroic mirror surface and the optical axis of incident light form an included angle .alpha.; the normal line of the reflection surface and the optical axis of incident light form an included angle .gamma.; light emitted from a light source is color-separated so as to become color lights; the color lights are rendered to be parallel light beams, and are modulated and reflected by means of the reflection type liquid crystal optical elements; the reflected light beams are color-synthesized; and the color-synthesized light is projected through a projection lens.

Abstract: The present invention provides a liquid crystal display device including a pair of electrode substrates and a display medium sandwiched between the electrode substrates and including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall. In this liquid crystal display device, the polymeric wall is tightly attached to both the electrode substrates. Furthermore, the invention also provides a method for producing a liquid crystal display device including a pair of electrode substrates, at least one of which is transparent, and a display medium including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall and sandwiched between the electrode substrates.

Abstract: A liquid crystal display unit including a plurality of subpixels in each pixel provides superior gradation over a wide viewing angle, and is produced with no increase in manufacturing cost and no deterioration of desired properties (such as reduction in brightness, contrast and response). No additional manufacturing step is required since a control capacitor electrode is formed at the same time as source and drain electrodes constituting a thin-film transistor. By controlling the ratio of display area and the difference in applied voltage of the subpixels, preferable viewing angle properties are obtained. The display properties at the boundary of subpixels are improved by controlling the gap width and the direction of boundary of the subpixels, thus providing a bright display.

Abstract: To prevent a signal delay of an active-matrix liquid crystal display from occurring in an active-matrix liquid crystal display having an active element for each pixel electrode, a potential is supplied to a common electrode from a storage capacitance line by forming a pillar of a color filter to specify a cell gap between an array substrate having the storage capacitance line and a facing substrate having the color filter and electrically connecting the common electrode covering the pillar of the color filter with the storage capacitance line on the array substrate. Thereby, it is possible to disuse a transfer dotting process which is a factor of decreasing the yield and also a factor of decreasing the effective display area.

Abstract: A description is given of an electroluminescent device (1) having an LED structure, which is composed of an active layer (7) of oriented liquid-crystalline and electroluminescent compounds and a transparent positive electrode layer (5) which is preferably made from an electroconductive polymer. By previously rubbing the electrode layer (5) in one direction with a velvet cloth, an orientation is induced in the molecules in the active layer (7), the orientation being frozen by cooling or polymerization. The electroluminescent device (1) emits polarized light whose direction of polarization is parallel to the direction of rubbing.

Abstract: A method is disclosed for making a liquid crystal composite in which droplets of a liquid crystal material are dispersed in a polymer matrix. At least one further material separates the liquid crystal material from the polymer matrix. This construction permits the polymer matrix to be selected on the basis of its environmental properties and the further material to be selected on the basis of its orientational interactions with liquid crystal material. Light valves made from such a composite exhibit improved electro-optical properties.

Abstract: In an active matrix liquid crystal display, common electrodes and pixel electrodes are respectively formed parallel to each other and have substantially herringbone shapes. Areas of first display regions formed between the common electrodes and the pixel electrodes and disposed at one side of the inflection points of the herringbone shapes are substantially the same as those of second display regions disposed at the other side. When electric fields substantially parallel to surface of an array substrate are applied between the pixel electrodes and the common electrodes, orientations of liquid crystal molecules in the first and second display regions move in opposite directions. Coloring of image corresponding to angle of view due to the movement of the orientation of the liquid crystal molecules is compensated.

Abstract: The present invention provides a liquid crystal display device including a pair of electrode substrates and a display medium sandwiched between the electrode substrates and including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall. In this liquid crystal display device, the polymeric wall is tightly attached to both the electrode substrates. Furthermore, the invention also provides a method for producing a liquid crystal display device including a pair of electrode substrates, at least one of which is transparent, and a display medium including a polymeric wall and liquid crystal regions at least partly surrounded by the polymeric wall and sandwiched between the electrode substrates.

Abstract: This invention relates to a reflection liquid crystal display device using a reflection liquid crystal light bulb and a method for fabricating such liquid crystal display devices, and an object thereof is to provide a liquid crystal display device and its manufacture wherein the numerical aperture of the subpixel is increased to improve the display brightness.

Abstract: An apparatus comprises a display panel having a back side and a front side. A mirrored surface receives sunlight and reflects the sunlight towards a lens system. The lens system focuses the reflected sunlight and directs the focused light towards the back side of the display panel to provide backlighting for the display panel. The backlighting enables the front side of the display panel to be viewed with improved contrast. Preferably, the display panel is of the liquid crystal display (LCD) type, and the mirrored surface is parabolic in shape.

Abstract: A head-position controlling device includes a head moving mechanism for causing a head to move with respect to a recording track on a recording medium; a detecting circuit for detecting an amplitude of a reproduced signal which is reproduced from the recording track on the recording medium by the head; and a controlling circuit for controlling the head moving mechanism on the basis of an output of the detecting circuit. If so that if the amplitude of the reproduced signal is greater than a predetermined level, the head is made to move in units of a first moving amount to detect a position where the amplitude of the reproduced signal is a maximum, and if the amplitude of the reproduced signal is less than the predetermined level, the head is made to move in units of a second moving amount greater than the first moving amount. If the amplitude of the reproduced signal becomes greater than the predetermined level, the moving amount of the head is switched to the first moving amount.

Abstract: This invention is directed to a manufacturing method and a new structure of a LCD aligner. The aligner is obtained by using transparency gradually changed mask for lithographic exposure. The LCD aligner made by this method has the function of both multidomain division and that of the retardation film. The advantages of LCD aligners made this way includes: simpler fabrication process, less cost, improved contrast ratio, reduced interference color, etc. Besides enhancing the color resolution of the screen, it also extends the viewing angle of the screen.

Abstract: A notch filter is provided in a RGB color twisted nematic liquid crystal display (LCD) apparatus, the notch filter preferably being located between the light source and the display panel. Undesirable peak(s) (e.g. blue-green) in the light rays from the source are substantially reduced or eliminated by the notch filter thereby improving the color saturation characteristics of the image reaching the viewer.