Abstract: An optical plate includes a main body plate, and a plurality of lens patterns formed on a first surface of the main body plate, wherein the lens patterns are elongated in a first direction and arranged in parallel with each other in a second direction crossing the first direction, wherein a cross section of the lens patterns form a part of an ellipse shape, the ratio of a semi-major axis to a semi-minor axis of the ellipse shape ranging from about 1.65 to about 1.75.

Abstract: An optical plate includes a main body plate, and a plurality of lens patterns formed on a first surface of the main body plate, wherein the lens patterns are elongated in a first direction and arranged in parallel with each other in a second direction crossing the first direction, wherein a cross section of the lens patterns form a part of an ellipse shape, the ratio of a semi-major axis to a semi-minor axis of the ellipse shape ranging from about 1.65 to about 1.75.

Abstract: A method for displaying map data on a screen of a navigation device. The method includes receiving a screen display request, rendering a particular interpolation point that is not within a filtering range among interpolation points included in the map data to be displayed on the screen and displaying the rendered interpolation point on the screen.

Abstract: A liquid crystal display device includes a liquid crystal display panel. A light guide plate is disposed at a rear side of the liquid display panel. The light guide plate has an exiting surface facing the liquid crystal panel and a reflecting surface opposite to the exiting surface. The reflecting surface has a plurality of grooves. A light source unit is disposed along at least one side of the light guide plate. The reflecting surface includes a first region formed the groove of a first length and a second region formed with groove of a second length shorter than the first length.

Abstract: A light-guide plate includes a base plate, first protrusion patterns and second protrusion patterns. The first protrusion patterns are formed on a left portion of an upper surface of the base plate with respect to a central line of the upper surface. The first protrusion patterns have a cross-section of a trapezoidal shape which has a top and a bottom parallel with each other and first and second inclined sides inclined at different angles with respect to the bottom side. The second protrusion patterns are formed on a right portion of the upper surface with respect to the central line. A cross-section of the second protrusion patterns have the trapezoidal shape and disposed substantially symmetrical to the first protrusion patterns with respect to the central line.

Abstract: Disclosed herein are a light guide plate and a backlight assembly using the same, which may improve the uniformity of light using prism patterns having a trapezoidal shape. The light guide plate includes a body, a plurality of first projections, and a plurality of second projections. The body includes an incident surface to which light is incident and an emitting surface from which the incident light is emitted. The plurality of first projections is disposed on the emitting surface of the body and has a trapezoidal shape in a section perpendicular to the incident surface. The plurality of second projections is disposed on the emitting surface of the body and has a shape symmetrical to a shape of the first projections.

Abstract: A manufacturing method of an optical member includes forming an optical film which has a first glass transition temperature and includes a pattern formed on a surface of the optical film, and an optical plate which has a second glass transition temperature that is lower than the first glass transition temperature, disposing the optical film and the optical plate adjacent each other so that the pattern faces the optical plate, pressurizing the optical film and the optical plate while heating the optical plate to the second glass transition temperature or higher, and forming the optical member by the pressurizing and the heating.

Abstract: A light absorption material absorbing a light of a dummy wavelength range or noises is added to a diffusion plate to remove light of an unnecessary wavelength band when using a cold cathode fluorescent lamp (“CCFL”) to enhance color reproducibility. Because the light absorption material is simply included in the diffusion plate, a fabrication or development cost can be reduced, and because a production line is not necessary, costs can be saved.

Abstract: A liquid crystal display comprises a liquid crystal display panel; a light source to provide light to the liquid crystal display panel; and a light controlling assembly disposed between the light source and the liquid crystal display panel, the light controlling assembly comprising at least one first light controlling member, at least one second light controlling member disposed on the first light controlling member and an light curing agent disposed on an edge part between the first light controlling member and the second light controlling member to adhere the first light controlling member and the second light controlling member to each other, the first light controlling member and the second light controlling member having an air layer therebetween.

Abstract: A method of manufacturing an optical plate, includes forming a protrusion on a base film by jetting ink containing a liquid resin on the base film, contacting a light guiding plate to the protrusion, and curing the protrusion which contacts with the light guiding plate.

Abstract: A liquid crystal display device includes a liquid crystal display panel. A light guide plate is disposed at a rear side of the liquid display panel. The light guide plate has an exiting surface facing the liquid crystal panel and a reflecting surface opposite to the exiting surface. The reflecting surface has a plurality of grooves. A light source unit is disposed along at least one side of the light guide plate. The reflecting surface includes a first region formed the groove of a first length and a second region formed with groove of a second length shorter than the first length.

Abstract: An apparatus for forming a pattern for a light guiding plate and a method of manufacturing a light guiding plate. The method of manufacturing a light guiding plate includes preparing a plurality of light guiding plates, each of the light guiding plates being a mother substrate on which optical patterns are formed, disposing molding frames including molding patterns on at least one surface of the light guiding plates, forming optical patterns corresponding to the molding patterns on the light guiding plates and removing the molding frames from the respective light guiding plates. The forming optical patterns includes hydrostatic pressing of the light guiding plates and the molding frames.

Abstract: An optical plate includes a main body plate, and a plurality of lens patterns formed on a first surface of the main body plate, wherein the lens patterns are elongated in a first direction and arranged in parallel with each other in a second direction crossing the first direction, wherein a cross section of the lens patterns form a part of an ellipse shape, the ratio of a semi-major axis to a semi-minor axis of the ellipse shape ranging from about 1.65 to about 1.75.

Abstract: A diffusion plate that is capable of improving a display quality, and a backlight assembly and a liquid crystal display (“LCD”) including the same are disclosed. The diffusion plate includes a base layer including of a first optically transparent resin and a first coating layer provided on a first surface of the base layer. The first coating layer includes a second optically transparent resin and random embossings. The first surface including the embossings has a 60° gloss of 15% or less. A method of forming a diffusion plate includes forming a base layer including a first optically transparent resin, providing random embossings on the base layer and sizing the diffusion plate to predetermined dimensions.

Abstract: Embodiments of the invention provide an information input system for a terminal and a multifunctional button assembly for use in the information input system and methods for operating the same. The multifunctional button assembly can include a lever control button, a rotary button and a switch that can be mounted on a substrate. The multifunctional button assembly of the invention can provide advantages in that since the number of functions provided by the multifunctional button assembly is relatively increased, more functions can be concurrently employed, and a terminal employing the multifunctional button assembly can be manufactured to be light, thin, short and compact.

Abstract: An apparatus for managing input key operation information includes a key input unit configured to receive a key input signal from a jog key, e.g., such as a jog dial or jog stick. A controller is configured to determine whether the key input signal is a jog message signal and to extract control operation information from the key input signal if the key input signal is the jog message signal. The control operation information includes jog key control direction and a number of jog key control operations from the jog message signal.

Abstract: A mold frame that does not yellow with exposure to ultraviolet radiation is presented. The mold frame includes a first portion, a second portion and a silicone layer. The first portion supports the optical member. The second portion extends from the first member and reflects a light generated from the lamp. The first silicone layer is coated on the second portion. With the silicone layer formed on the mold frame, yellowing is prevented and display quality is improved.

Abstract: Embodiments of the invention provide an information input system for a terminal and a multifunctional button assembly for use in the information input system and methods for operating the same. The multifunctional button assembly can include a lever control button, a rotary button and a switch that can be mounted on a substrate. The multifunctional button assembly of the invention can provide advantages in that since the number of functions provided by the multifunctional button assembly is relatively increased, more functions can be concurrently employed, and a terminal employing the multifunctional button assembly can be manufactured to be light, thin, short and compact.

Abstract: An optical plate includes a planar base and a plurality of rounded prisms formed on the planar base. The rounded prisms improve a uniformity of the light passing through the planar base and then irradiate the light having the improved uniformity. A concave peak formed in each of the plurality of rounded prisms of the optical plate scatters the light provided into a rear face of the optical plate so that dark lines and bright lines are not generated on the optical plate. As a result, the optical plate has improved light efficiency.