Abstract: The present invention makes a radiation angle of light at a portion of a light guide plate in front of an LED formed on one edge of a light guide plate and a radiation angle of light at a corner portion of the light guide plate equal to each other as much as possible. A shape of beam control elements which are arranged on a lower surface of a light guide plate is arranged concentrically about the LED.

Abstract: An object of the invention is to facilitate attachment of a spacer to a support member in an assembling process of a liquid crystal display device. A display device includes: a display panel, a support member that supports the display panel and a spacer that is interposed between a cut end surface of the display panel and a first surface of the support member, the first surface facing the cut end surface of the display panel. The support member has a recess that opens through the first surface and a second surface, which is connected to the first surface and extends away from the display panel. The spacer includes a spacer position securing portion inserted in the space of the recess of the support member and a buffer portion that is integral with the spacer position securing portion and protrudes from the open end at the first surface of the support member toward the cut end surface of the display panel.

Abstract: The present invention provides a liquid crystal display device of high quality having high brightness and uniform brightness distribution by focusing the light radiation direction from a light guide plate in the vertical direction with respect to a light radiation surface of the light guide plate. The liquid crystal display device includes a liquid crystal display panel and a flat lighting device which radiates an illumination light to a back surface of the liquid crystal display panel. The flat lighting device includes a light guide plate which has an upper surface facing a back surface of the liquid crystal display panel in an opposed manner and constituting a light radiation surface and a bottom surface which is arranged opposite to the upper surface. One LED is arranged at a first corner portion of the light guide plate and another LED is arranged at a second corner portion of the light guide plate arranged adjacent to the first corner portion.

Abstract: A liquid crystal display device having includes a light guide plate having a surface thereof serving as an illuminating surface region opposite to a liquid crystal display panel, light sources mounted on a flexible printed-circuit board and provided on a side face of the light guide plate, an optical sheet member interposed between the liquid crystal display panel and the light guide plate. The side surfaces of the light guide plate with the light sources provided thereon have a ridge-like inclined surface formed thereon, when viewed from the illuminating surface, and the ridge-like inclined surfaces serve as a light-receiving surface with the light source arranged thereon.

Abstract: A liquid crystal display device of the present invention includes a liquid crystal display panel, and a backlight arranged on a back surface of the liquid crystal display panel. The backlight includes a plurality of rod-shaped light sources, electrode fittings for holding the rod-shaped light sources, and side wall plates covering the electrode fittings. The electrode fittings are connected to a connection portion extending in the parallel-arrangement direction of the rod-shaped light sources. The side wall plate includes a plurality of projecting members arranged in parallel to each other in the extending direction of the connection portion. The connection portion includes positions which are brought into contact with the projecting members and portions which are not brought into contact with the projecting members. By adopting the above-mentioned constitution, the liquid crystal display device can reduce squeals and the like.

Abstract: A backlight device, which uses solid-state light emitting elements capable of emitting lights of three colors, consisting of red, green and blue, can exhibit an enhanced light utilizing efficiency, and can generate light of high uniformity in brightness and chromaticity in a display device which can obtain a display image of high brightness with a rapid response speed. The backlight device includes a reflector which has a light reflection surface, a plurality of light transmitting cylindrical light guide bodies which are mounted on the light reflection surface of the reflector in a uniformly distributed manner, and light emitting diodes capable of emitting lights of at least three colors which are mounted inside each light guide body. By performing color mixing every light guide block, it is possible to obtain a white light of high chromaticity which has a high luminous flux distribution.

Abstract: A liquid crystal display device has a liquid crystal display panel and a backlight. The backlight includes plural line light sources arranged in parallel with each other, a transparent optical plate disposed on a liquid-crystal-display-panel side of the line light sources, plural minute optical controlling elements formed on a liquid-crystal-display-panel-side surface of the transparent optical plate. The plural minute optical controlling elements extend in parallel with the line light sources, and are symmetrical in a cross section perpendicular to longitudinal axes of the plural line sources, between two adjacent midplanes each of which passes midway between two adjacent ones of the plural line light sources and each of which is perpendicular to the transparent optical plate.

Abstract: A display device includes a display panel, a lower frame arranged in the rear of the display panel when viewed from a viewer, and at least one printed circuit board arranged on or above a flat plane of the lower frame. In this display device, the lower frame carries plural positioning projections. They are located outside of a region, where the printed circuit board is arranged, at positions facing each other with the interposition of the region, and arise from the flat plane of the lower frame toward the printed circuit board. Distal portions of the positioning projections protrude from, and bend away from the printed circuit board arranged on or above the lower frame.

Abstract: A liquid crystal display device which favorably displays an image by eliminating irregularities of the ? characteristic for every manufactured liquid crystal panel. In the liquid crystal display device, when a power source is supplied thereto, a display control circuit installed therein reads out gradation voltage data corresponding to the liquid crystal panel stored in a ROM connected to the display control circuit and sets gradation voltages in a gradation voltage setting circuit installed therein. Further, upon receiving external control signals, the display control circuit sets gradation voltages in the gradation voltage setting circuit. When the set gradation voltages are inputted to a source driver section of the liquid crystal display device, the liquid crystal panel is driven and images are displayed thereby.

Abstract: A display device has a display panel, a frame, and an elastic spacer arranged on the periphery of the display panel in parallel to the edge of the display panel. The elastic spacer is arranged between the display panel and the frame, and the hardness of the elastic spacer is varied along the length-side direction of the elastic spacer.

Abstract: The present invention is directed to a display device that overcomes the limitation on tact time, and the defective phenomenon attributed to the generation of bubbles, pasting and visual irregularities at the time of laminating a film to a display panel. A polarizer is positioned in parallel to the vicinity of a main surface of a liquid crystal cell by holding two portions of the polarizer at suction stages. A portion of the polarizer is pushed and brought into contact with the main surface of the liquid crystal cell. From the portion of the polarizer, the polarizer is pushed to the main surface toward one end of the main surface along a first direction thereof. The polarizer is pushed to the main surface of the liquid crystal cell toward another end of the main surface in the first direction so as to laminate the polarizer to the main surface.

Abstract: A display device suitable for a game machine has dot printed films which are printed on a light guide plate which constitutes a backlight for illuminating a liquid crystal display panel. The dots of the dot printed films are arranged more densely in a window-frame portion corresponding region, which faces a display region of the liquid crystal display panel, and in the vicinity of an inner periphery of a transmission portion corresponding to a region which faces a transmission region.

Abstract: The present invention provides a display device comprising a display panel and a backlight device comprising a main light guide body which irradiates light toward the display panel. A sub light guide body is arranged on the back surface of the main light guide body is divided in the center by a first air layer. Both end portions of the sub light guide are optically coupled to the main light guide, and a plurality of solid state light emitting elements are arranged in the inside of the air layer of the sub light guide.

Abstract: A liquid crystal display device formed as a both-side liquid crystal display device can suppress the generation of brightness irregularities generated on a main liquid crystal display panel thereof and can display an image with a uniform brightness over the whole screen to an extent that a uniform brightness is obtained in practical use. On a bottom surface of a first recessed portion formed in a casing, an optical sheet is arranged such that the optical sheet bridges over an opening, and a proper amount of color pigment is added to the casing on which the optical sheet is arranged in a contact state, thus making the reflectance wavelength characteristic of the surface substantially equal to the reflectance wavelength characteristic of a portion of the sub liquid crystal display panel.

Abstract: The present invention decreases invalid light emitting regions, which are generated at both ends of an outer tube and enlarges a valid light emitting region of a phosphor layer, which enlarges the light emitting region of a lighting device. In a cold cathode fluorescent tube, cup-shaped electrodes are provided on the inside of both ends of a glass tube, which has a phosphor layer on the inner surface thereof, wherein each cup-shaped electrode connects to an inner lead, which supplies an electric power. A sputter source is formed on an inner wall surface of the cup-shaped electrode by sintering white metal oxide, whereby the white metal oxide which constitutes a sputter source is sputtered by evaporation, which forms a sputter film on a portion of the opening end of the cup-shaped electrode and inner wall surface of the glass tube.

Abstract: A semiconductor device with a resistor element whose the resistance value can be adjusted to a desired value without changing dimensions thereof is provided. The resistor element is formed of a poly-Si layer formed on an insulator over a semiconductor substrate. An impurity is introduced into the poly-Si layer by the use of ion implantation. In the vicinity of both ends of the poly-Si layer forming the resistor element, silicide layers each made of cobalt silicide or the like are formed over an upper surface of the poly-Si layer. The area of one silicide layer is larger than that of the other silicide layer. By adjusting the area of the one silicide layer, the length between the silicide layers is adjusted and the resistance value of the resistor element can be adjusted without changing the shape of the poly-Si layer.

Abstract: A semiconductor device with a resistor element whose the resistance value can be adjusted to a desired value without changing dimensions thereof is provided. The resistor element is formed of a poly-Si layer formed on an insulator over a semiconductor substrate. An impurity is introduced into the poly-Si layer by the use of ion implantation. In the vicinity of both ends of the poly-Si layer forming the resistor element, silicide layers each made of cobalt silicide or the like are formed over an upper surface of the poly-Si layer. The area of one silicide layer is larger than that of the other silicide layer. By adjusting the area of the one silicide layer, the length between the silicide layers is adjusted and the resistance value of the resistor element can be adjusted without changing the shape of the poly-Si layer.

Abstract: In a system including a color liquid crystal panel, a liquid crystal display drive control device for driving the panel, and a microprocessor, the display drive control device of the invention lightens the burden imposed on the microprocessor as well as reduces the power consumption of the system.

Abstract: In a system including a color liquid crystal panel, a liquid crystal display drive control device for driving the panel, and a microprocessor, the display drive control device of the invention lightens the burden imposed on a microprocessor as well as reduces the power consumption of the system.