Abstract: The present invention provides a reflector having a light-diffusing property which suppresses inter-object reflection over a wide angle, and giving particularly high reflectance in an intended range of viewing angle; and to provide a reflection type liquid crystal display device using the same. The reflector includes a plurality of light-reflective concave portions. Each of the concave portions is formed so that an inclination angle (an angle between a plane tangential to a point on a concave surface and the surface of the base material) is maximum on a side portion of the curved surface, and so that the direction of the side portion having the maximum inclination angle is on a far side from a view point of an observer.

Abstract: A reflector and a liquid crystal display device in which original reflection characteristics can be sufficiently accomplished and moiré patterns can be prevented are provided. A reflector 30 formed with a plurality of concave portions 28b1, 28b2 on one surface of a base member along one arrangement direction is employed. When defining the section passing through the deepest point of the concave portion as a first section and defining the section perpendicular to the first section at the deepest point as a second section, the concave portions 28b1, 28b2 have symmetrical shapes on the basis of the first section and have asymmetrical shapes on the basis of the second section. When defining the directions along the first section in the concave portions 28b1, 28b2 as axis directions L1, L2, each of the axis directions L1, L2 are not parallel with the arrangement direction, and the axis directions L1, L2 are set to two or more directions.

Abstract: A reflecting plate and a liquid crystal display device using the reflecting plate are provided capable of diffusing an incident light beam coming from a wide range of angles in a uniform manner while increasing the reflectivity at a main viewing angle. The reflecting plate includes a plurality of concave portions with a rounded surface formed thereon. The minimum tilt angle of the bottom surface of the concave portion with respect to the level plane is greater than 0.

Abstract: A reflector includes a reflection substrate and an optical diffusion layer deposited on the reflection substrate, which is provided with a plurality of reflection inclined planes continuously formed on a surface thereof with a stripe geometry in plan view and a surface of each refection inclined plane is an irregular irregular surface, and the optical diffusion layer is made of a matrix of a transparent resin or a transparent adhesive having fine particles dispersed therein so as to flatten the reflection substrate.

Abstract: In a concave portion of a reflector of a liquid crystal display, a shape of an opening surface is approximately elliptical. A straight line parallel to a first section line passing through a deepest point of the concave portion along a long axis of the elliptical shape is formed in a portion of the elliptical shape. The concave portion has an asymmetrical shape with respect to the first section which becomes wide from the first section line passing through the deepest point toward a depth direction and has a symmetrical shape with respect to the second section which becomes wide from the second section line perpendicular to the first section line toward the depth direction. A maximum angle of inclination of the second section is larger than a maximum angle of inclination of the first section.

Abstract: An opening formed on a transflective film is close to the edge of a rectangular pixel region. An interval t2 between three sides of the four sides of the opening and the edge of the pixel region is smaller than the width of one concave portion formed on the transflective film thereby permitting the concave portions that contribute the least to reflection to be minimized, and the reflectance of the transflective film to be maximized. The desired reflection characteristic can be obtained using a predetermined number of concave portions.

Abstract: The present invention provides a reflector having a light-diffusing property which suppresses inter-object reflection over a wide angle, and giving particularly high reflectance in an intended range of viewing angle; and to provide a reflection type liquid crystal display device using the same. The reflector includes a plurality of light-reflective concave portions. Each of the concave portions is formed so that an inclination angle (an angle between a plane tangential to a point on a concave surface and the surface of the base material) is maximum on a side portion of the curved surface, and so that the direction of the side portion having the maximum inclination angle is on a far side from a view point of an observer.

Abstract: A reflector having light diffusibility for suppressing a reflected image within a wide viewing angle range and having a particular brightness at a specific viewing angle range, and a reflective liquid crystal display device using the reflector, are provided. The reflector 1 comprises a plurality of light-reflective concave portions 3, which are formed on a surface S of a substrate, wherein each of the concave portions 3 is formed with a first curved surface A1 located at one peripheral portion S1 of the concave portion 3 and a second curved surface B1 located at the other peripheral portion S2 thereof, the deepest point D1 is located on the first curved surface A1, and the maximum value ?b1 of the absolute value of the second curved surface B1 to the surface S of the substrate is larger than that of the maximum value ?a1 of the absolute value of the first curved surface A1 to the surface S of the substrate.

Abstract: An active matrix display device includes a pair of substrates, an optical modulation layer lying between the substrates, a plurality of pixel electrodes on one of the substrates, switching elements for driving the respective pixel electrodes provided in the vicinity of the pixel electrodes, and a reflective or transflective reflecting layer 138 formed on at least one substrate more distant from a viewer side. The reflecting layer has asymmetrical reflection properties.

Abstract: The reflection characteristic of the reflector is varied in accordance with the distance from the central portion of the display region of the reflection surface, the intensity of the light which is incident to the reflector and reflected on the reflection surface is to be uniform in the range of the ± expected angle ?, and the expected angle ? satisfies the relationship expressed by the following formula (1) ?(degree)=tan?1(H/2 L)??(1) (In the equation, ? is the expected angle, H is the dimension of the vertical direction of the display region and is in the range of 2 cm to 30 cm, and L is the distance from the center of the display region to the observing point and is in the range of 10 cm to 300 cm). A liquid crystal display device has a reflector attached in the inner side or outer side of a liquid crystal cell.

Abstract: In a concave portion of a reflector of a liquid crystal display, a shape of an opening surface is approximately elliptical. A straight line parallel to a first section line passing through a deepest point of the concave portion along a long axis of the elliptical shape is formed in a portion of the elliptical shape. The concave portion has an asymmetrical shape with respect to the first section which becomes wide from the first section line passing through the deepest point toward a depth direction and has a symmetrical shape with respect to the second section which becomes wide from the second section line perpendicular to the first section line toward the depth direction. A maximum angle of inclination of the second section is larger than a maximum angle of inclination of the first section.

Abstract: A reflector for a liquid crystal display includes a substrate with light-reflective concave portions on the surface thereof. Each concave portion has a specific vertical section which passes through a deepest point of the concave portion. The internal shape of the specific vertical section is defined by a first curve, which extends from one point on the peripheral edge of the concave portion to the deepest point of the concave portion, and a second curve, which extends continuously from the first curve and from the deepest point of the concave portion to another point on the peripheral edge of the concave portion. The average of the absolute value of an inclination angle of the first curve relative to the substrate surface is larger than the average of the absolute value of an inclination angle of the second curve relative to the substrate surface.

Abstract: A reflector includes a large number of hollow portions with arbitrary sizes randomly fabricated in an area with a predetermined unit length on one side to form a reflector piece. Reflector pieces are repeatedly fabricated to form a large reflective surface. The predetermined unit length is set from 30 to 3,000 ?m. With this setting, Moire fringing can be efficiently avoided when the reflector is used as a reflector of, for example, a liquid-crystal display.

Abstract: A liquid crystal display device includes a reflector disposed at an outside surface side of one substrate of a liquid crystal cell or between the first substrate and an electrode disposed on an inside surface side of the first substrate. When an angle between a direction of a normal line with respect to a display surface of the liquid crystal display device and a main viewing direction is from about 0 degrees to about 20 degrees, a reflection ratio peak value of light incident upon the liquid crystal display device and reflected by the reflector is set so as to occur within a range of about 20 degrees from the normal line direction.

Abstract: A transflective film has concave portions with diameters such that two or more concave portions can be disposed in a gap t2 between an opening edge of an opening and an edge of a pixel area. The diameter D (width) of the concave portions are 1 to 17 ?m.

Abstract: A reflector of a LCD is formed such that reflective large-diameter A concave portions are formed on a surface of a metal film formed on a base material in irregular pitches and small-diameter concave portions formed between the large-diameter concave portions. An inner surface of the large-diameter and small-diameter concave portions has a spherical or non-spherical curved surface. In the metal film, the inclination of a sectional curved line of a vertical surface at the boundary of the adjacent concave portions is discontinuous. The LCD is formed such that the reflector is attached on an inside or an outside of the liquid crystal cell.

Abstract: There is provided a color liquid crystal display device capable of being viewed in clear and natural states of colors with respect to the color sensitivity of the human eye. A transflective film 12 is formed such that an R aperture 32r corresponding to an R color filter has the largest size, a G aperture 32g corresponding to a G color filter has the smallest size, and a B aperture 32b corresponding to a B color filter has an intermediate size. That is, the aperture ratios of apertures 32 formed on the transflective film 12 decrease in the order of the R aperture 32r> the B aperture 32b> the G aperture 32g. Since the size of the aperture 32 is varied in accordance with the color of the corresponding color filter, it is possible to control brightness in natural states of colors with respect to the characteristics of color sensitivity intrinsic to the human eye.

Abstract: In a liquid crystal display, first and second substrates are provided opposing each other with a liquid crystal layer held between them, the outer surface of the first substrate serves as a light scattering surface having a light scattering characteristic, and a reflector including an irregular reflection surface is provided on the light scattering surface so that the reflection surface is on the light scattering surface side.

Abstract: Light-reflective concave portions are disposed on the surface of a substrate. The concave portions have a first and second vertical section perpendicular to each other. The first vertical section has an internal shape defined by a first curve and a second curve, the first curve extending from one point on the peripheral edge of the concave portion to the deepest point of the concave portion, and the second curve extending continuously from the first curve and from the deepest point of the concave portion to another point on the peripheral edge of the concave portion. The average of the absolute value of an inclination angle of the first curve is larger than that of the second curve relative to the substrate surface. The second vertical section has an internal shape defined by a shallow curve and deep curves formed at both sides of the shallow curve.

Abstract: When the thickness of a filter layer 170 in a light-reflecting portion R (the thickness of a thin portion 170a) is ‘FR’, the thickness of the filter layer 170 in a light-transmitting portion T (the thickness of a thick portion 170b) is ‘FT’, the thickness of a liquid crystal layer 150 in the light-reflecting portion R is ‘LR’, the thickness of the liquid crystal layer 150 in the light-transmitting portion T is ‘LT’, and the depth of a groove 155 is ‘D’, the depth D of the groove 155 formed in a resin layer 160 is formed to satisfy the formula D=(LT?LR)+(FT?FR). With defining (LT?LR) as ‘L’ and (FT?FR) as ‘F’, the formula becomes D=L+F. If the depth of the groove 155 satisfies the formula, it is possible to make an optical path length of external light N equal to an optical path length of illumination light B from a backlight 200 when they pass through the liquid crystal panel.