Abstract: A white highly-reflective layer is formed at both ends of a light incident edge face of a color-mixing region of a light guide plate to surround an LED. Alternately, an overhung portion may be overhung from both ends of the light incident edge face of the color-mixing region of the light guide plate by a same material thereof to surround the LED, and a white highly-reflective layer is formed at terminals of the overhung portion. Still further, an overhung portion may be overhung from both ends of the light incident edge face of the color-mixing region of the light guide plate by the same material thereof to surround the LED, and a specular highly-reflective layer made of metal such as silver or aluminum is formed at terminals of the overhung portion.

Abstract: A large liquid crystal display (100) comprises a light guide plate (3) arranged on the back side of a liquid crystal panel (1). The front surface of the light guide plate (3) is flat, while the back surface thereof is concave. The upper and lower end faces of the light guide plate (3) respectively facing hot cathode fluorescent lamps (2a, 2b) have a convex shape projecting toward the respective lamps. White light from the fluorescent lamps is incident on the upper and lower end faces of the light guide plate directly or by being reflected by reflectors (4a, 4b), and propagates within the light guide plate while being reflected by the front and back surfaces of the light guide plate. At the front surface of the light guide plate, a part of the white light is directed toward the back side of the liquid crystal panel (1) by a light guide portion (5).

Abstract: A color-mixing section R1 is constructed by allocating to each light-adjusting area one or more LEDs 311, . . . as primary light sources and color-mixing elements R1(411), . . . for guiding primary light from the LED 311, . . . to color-mix or homogenize the brightness. An available element R2 for receiving secondary light from the color-mixing elements to emit light covers the entire color-mixing elements. The LEDs 311, . . . and the color-mixing elements R1(411), . . . are not superposed onto each other.

Abstract: A control circuit changes the ratio of an illumination period to a non-illumination period in a frame period of a backlight according to a gradation level in the one frame period of an image displayed on a liquid crystal panel in such a manner that the higher the gradation level, the backlight illumination control circuit increases the ratio of the illumination period to the non-illumination period in the frame period of the backlight, and the lower the gradation level, the backlight illumination control circuit decreases the ratio of the illumination period to the non-illumination period in the frame period of the backlight and thereby controls illumination intensity toward the liquid crystal panel. A time center of illumination intensity in each one frame period of the backlight is controlled in order that the time center exists in a constant temporal position from the beginning of each frame period.

Abstract: A backlight illumination control circuit changes the ratio of an illumination period BL to a non-illumination period in a frame period V of a backlight according to a gradation level in the one frame period V of an image displayed on a liquid crystal panel in such a manner that the higher the gradation level, the backlight illumination control circuit increases the ratio of the illumination period BL to the non-illumination period in the frame period V of the backlight, and the lower the gradation level, the backlight illumination control circuit decreases the ratio of the illumination period BL to the non-illumination period in the frame period V of the backlight and thereby controls illumination intensity toward the liquid crystal panel. A time center of illumination intensity in each one frame period V of the backlight is controlled in order that the time center exists in a constant temporal position T from the beginning of each frame period V.

Abstract: It is an object of the present invention to provide a liquid crystal display device in which a liquid crystal layer may form a stable transparent state and, in addition, which provides for a black display with an excellent viewing angle characteristic, as well as a high contrast ratio and a high response speed in liquid crystal display. The present invention is directed to a liquid crystal display device comprising an electrode and a liquid crystal layer between substrates, said liquid crystal layer consists of a liquid crystalline material containing liquid crystal molecules and fine particles, and is optically isotropic when the voltage applied to the electrode is lower than a threshold value and undergoes optical transition due to change in the arrangement of the liquid crystal molecules when the applied voltage is not lower than the threshold value.

Abstract: One embodiment of the present invention discloses a liquid crystal display device, and more particularly a transmissive-type liquid crystal display device including a backlight on a back of a panel. The liquid crystal display device includes a gray scale signal generating portion including an input image luminance level analyzing circuit that obtains luminance level distributions of respective colors based on RGB image signals, a correction coefficient calculating circuit that calculates correction coefficients based on the luminance level distributions of the respective colors, and an image signal correcting circuit that corrects luminance levels indicated by the RGB image signals, based on the correction coefficients; and an amount-of-backlight-light control circuit that adjusts amounts of lights emitted from LEDs for the respective colors based on the correction coefficients.

Abstract: The liquid crystal display device according to the present invention comprising: a liquid crystal display cell including liquid crystal between two substrates facing to each other; a polarizing element provided on each side of the liquid crystal display cell; and at least one film member provided in at least either one area of areas between the liquid crystal display cell and the polarizing element, the polarizing element being formed from a film made of polyvinylalcohol resin, the film member being attached to the polarizing element with a cohesive layer and/or an adhesive layer having a thickness of less than 10 ?m therebetween, and the film member provided in at least either one area of areas between the liquid crystal display cell and the polarizing element having an absolute value of a photoelastic coefficient of less than 10×10?8 cm2/N and having a water absorption of less than 2.0%.

Abstract: A liquid crystal display has spacers for maintaining a liquid crystal layer and a cell gap between a substrate and an opposite substrate and also has regions either within a single pixel or over two or more pixels. The spacers are of columnar shape elongated from the substrate to the opposite substrate or the other way round, and the columnar spacers are provided in regions in which the liquid crystal layer is thinnest among those regions in which the liquid crystal layer varies in thickness. The structure makes the liquid crystal display having two or more different cell gaps to stably maintain those cell gaps and produces good quality displays.

Abstract: A large liquid crystal display (100) comprises a light guide plate (3) arranged on the back side of a liquid crystal panel (1). The front surface of the light guide plate (3) is flat, while the back surface thereof is concave. The upper and lower end faces of the light guide plate (3) respectively facing hot cathode fluorescent lamps (2a, 2b) have a convex shape projecting toward the respective lamps. White light from the fluorescent lamps is incident on the upper and lower end faces of the light guide plate directly or by being reflected by reflectors (4a, 4b), and propagates within the light guide plate while being reflected by the front and back surfaces of the light guide plate. At the front surface of the light guide plate, a part of the white light is directed toward the back side of the liquid crystal panel (1) by a light guide portion (5).

Abstract: It is an object of the present invention to provide a liquid crystal display device in which a liquid crystal layer may form a stable transparent state and, in addition, which provides for a black display with an excellent viewing angle characteristic, as well as a high contrast ratio and a high response speed in liquid crystal display. The present invention is directed to a liquid crystal display device comprising an electrode and a liquid crystal layer between substrates, said liquid crystal layer consists of a liquid crystalline material containing liquid crystal molecules and fine particles, and is optically isotropic when the voltage applied to the electrode is lower than a threshold value and undergoes optical transition due to change in the arrangement of the liquid crystal molecules when the applied voltage is not lower than the threshold value.

Abstract: A liquid crystal display has spacers for maintaining a liquid crystal layer and a cell gap between a substrate and an opposite substrate and also has regions either within a single pixel or over two or more pixels. The spacers are of columnar shape elongated from the substrate to the opposite substrate or the other way round, and the columnar spacers are provided in regions in which the liquid crystal layer is thinnest among those regions in which the liquid crystal layer varies in thickness. The structure makes the liquid crystal display having two or more different cell gaps to stably maintain those cell gaps and produces good quality displays.

Abstract: A liquid crystal display has spacers for maintaining a liquid crystal layer and a cell gap between a substrate and an opposite substrate and also has regions either within a single pixel or over two or more pixels. The spacers are of columnar shape elongated from the substrate to the opposite substrate or the other way round, and the columnar spacers are provided in regions in which the liquid crystal layer is thinnest among those regions in which the liquid crystal layer varies in thickness. The structure makes the liquid crystal display having two or more different cell gaps to stably maintain those cell gaps and produces good quality displays.

Abstract: It is an object of the present invention to provide a liquid crystal display device in which a liquid crystal layer may form a stable transparent state and, in addition, which provides for a black display with an excellent viewing angle characteristic, as well as a high contrast ratio and a high response speed in liquid crystal display. The present invention is directed to a liquid crystal display device comprising an electrode and a liquid crystal layer between substrates, said liquid crystal layer consists of a liquid crystalline material containing liquid crystal molecules and fine particles, and is optically isotropic when the voltage applied to the electrode is lower than a threshold value and undergoes optical transition due to change in the arrangement of the liquid crystal molecules when the applied voltage is not lower than the threshold value.

Abstract: The liquid crystal display device according to the present invention comprising: a liquid crystal display cell including liquid crystal between two substrates facing to each other; a polarizing element provided on each side of the liquid crystal display cell; and at least one film member provided in at least either one area of areas between the liquid crystal display cell and the polarizing element, the polarizing element being formed from a film made of polyvinylalcohol resin, the film member being attached to the polarizing element with a cohesive layer and/or an adhesive layer having a thickness of less than 10 ?m therebetween, and the film member provided in at least either one area of areas between the liquid crystal display cell and the polarizing element having an absolute value of a photoelastic coefficient of less than 10×10?8 cm2/N and having a water absorption of less than 2.0%.

Abstract: It is an object of the present invention to provide a liquid crystal display device in which a liquid crystal layer may form a stable transparent state and, in addition, which provides for a black display with an excellent viewing angle characteristic, as well as a high contrast ratio and a high response speed in liquid crystal display. The present invention is directed to a liquid crystal display device comprising an electrode and a liquid crystal layer between substrates, said liquid crystal layer consists of a liquid crystalline material containing liquid crystal molecules and fine particles, and is optically isotropic when the voltage applied to the electrode is lower than a threshold value and undergoes optical transition due to change in the arrangement of the liquid crystal molecules when the applied voltage is not lower than the threshold value.

Abstract: A liquid crystal display has spacers for maintaining a liquid crystal layer and a cell gap between a substrate and an opposite substrate and also has regions either within a single pixel or over two or more pixels. The spacers are of columnar shape elongated from the substrate to the opposite substrate or the other way round, and the columnar spacers are provided in regions in which the liquid crystal layer is thinnest among those regions in which the liquid crystal layer varies in thickness. The structure makes the liquid crystal display having two or more different cell gaps to stably maintain those cell gaps and produces good quality displays.

Abstract: A liquid crystal display has spacers for maintaining a liquid crystal layer and a cell gap between a substrate and an opposite substrate and also has regions either within a single pixel or over two or more pixels. The spacers are of columnar shape elongated from the substrate to the opposite substrate or the other way round, and the columnar spacers are provided in regions in which the liquid crystal layer is thinnest among those regions in which the liquid crystal layer varies in thickness. The structure makes the liquid crystal display having two or more different cell gaps to stably maintain those cell gaps and produces good quality displays.

Abstract: A liquid crystal display has spacers for maintaining a liquid crystal layer and a cell gap between a substrate and an opposite substrate and also has regions either within a single pixel or over two or more pixels. The spacers are of columnar shape elongated from the substrate to the opposite substrate or the other way round, and the columnar spacers are provided in regions in which the liquid crystal layer is thinnest among those regions in which the liquid crystal layer varies in thickness. The structure makes the liquid crystal display having two or more different cell gaps to stably maintain those cell gaps and produces good quality displays.

Abstract: A liquid crystal display comprising a plurality of liquid crystal panels placed on a single plane of a large substrate, and a black matrix made of a photo-absorbing film that shows black when having absorbed light. Two polarizing plates are respectively placed to cover the front and rear surface of a set of liquid crystal panels almost entirely in such a manner that their polarizing axes intersect at right angles. The resulting multi-screen liquid crystal display consumes less power, retains excellent display quality, and makes the joints between the liquid crystal panels difficult to see.