Abstract: A device and method for forming a groove pattern in a light-guiding plate for obtaining high luminance and decreasing processing time, thereby improving yield. The device has a tool unit including a tool guide and a head which is further provided with heating plate disposed below the tool unit; a stamper disposed under the heating plate; and a plurality of cutting tools extending from a lower side of the stamper at fixed intervals, for forming a plurality of groove patterns in a surface of the light-guiding plate.

Abstract: A backlight unit for a display device includes a light guide plate formed with a first prism pattern on one of top and bottom surfaces, a lamp including first and second lamp portions facing first and second side surfaces, respectively, of the light guide plate, and a reflector facing the bottom surface of the light guide plate, wherein the first prism pattern is formed in a direction of crossing at least one of the first and second lamp portions.

Abstract: The present invention relates to a folder-type portable radiotelephone having a main body including a printed circuit board, and a subbody including an LCD (Liquid Crystal Display) module. The subbody is connected to the main body in such a way that the subbody can be folded and unfolded by a hinge device. The radiotelephone comprises at least one connection device mounted on a portion where the main body meets with the subbody. The connection device electrically connects a grounding portion of the printed circuit board included in the main body to a grounding portion of the LCD module included in the subbody when the radiotelephone is folded and unfolded. Consequently, current density radiated from an antenna device is reduced, contributing to a remarkable reduction in SAR (Specific Absorption Rate).

Abstract: An apparatus and method for fabricating the light guide panel reduces the thickness of the stamper and fixes it firmly in place. The apparatus and method for fabricating the light guide panel according to the present invention has a stamper for forming patterns on the light guide panel and first and second side mold frames which are separable so as to hold the stamper in place during the formation of the light guide and so as to easily eject the finished light guide after it has formed and hardened.

Abstract: A dielectric resonator (10) having three surfaces formed by chamfering three ridged portions sharing an apex of a dielectric block and another three surfaces adjacent respectively thereto, in which each of the chamfered surfaces and the adjacent surfaces thereto offers an angle of 45 degrees and an area ratio of the chamfered surfaces with respect to the adjacent surfaces is 45% is mounted in a cut-off waveguide of a generally rectangular parallelopiped (21) and feeding probe (24) and (25) are provided for composing a dielectric filter.

Abstract: An apparatus for manufacturing a light guide in a liquid crystal display and a manufacturing method thereof with a simplified mold structure. In the apparatus, an core material portion is fixed to a light guide molding stamper to constitute a molding device along with the stamper. A fixing member fixes the stamper to the core material portion. The molding device constitutes a mold for molding the light guide, along with a stationary core and a movable core. Accordingly, the stamper and the molding core are integrally formed and sealed, so that a mold structure can be simplified and stable manufacturing of the light guide can be provided.

Abstract: A lens cap assembly for a camera includes a front panel disposed proximal to a subject, the front panel being provided with a first optical path and a supporting portion projected toward a film or an image-photographing portion, at least a pair of barriers coupled to the front panel by a hinge for opening and closing the first optical path of the front panel, plural elastic members disposed on the front panel to bias the barriers to an open position, a barrier cover fixed to the front panel to enclose the barriers to prevent the barriers from being deviated from an optical axis, the barrier cover being provided with a second optical path, a driving lever rotatably coupled to the barrier cover, the driving lever being provided with a third optical path and a projection depressing the barriers to a closed position, and a power transmission device for converting a linear motion of the barrel into a rotational motion of the driving lever or for operating a bar in a direction for closing the barriers.

Abstract: A device and method for forming a groove pattern in a light-guiding plate for obtaining high luminance and decreasing processing time, thereby improving yield. The device has a tool unit including a tool guide and a head which is further provided with heating plate disposed below the tool unit; a stamper disposed under the heating plate; and a plurality of cutting tools extending from a lower side of the stamper at fixed intervals, for forming a plurality of groove patterns in a surface of the light-guiding plate.

Abstract: A lens cap assembly for a camera includes a front panel disposed proximal to a subject, the front panel being provided with a first optical path and a supporting portion projected toward a film or an image-photographing portion, at least a pair of barriers coupled to the front panel by a hinge for opening and closing the first optical path of the front panel, plural elastic members disposed on the front panel to bias the barriers to an open position, a barrier cover fixed to the front panel to enclose the barriers to prevent the barriers from being deviated from an optical axis, the barrier cover being provided with a second optical path, a driving lever rotatably coupled to the barrier cover, the driving lever being provided with a third optical path and a projection depressing the barriers to a closed position, and a power transmission device for converting a linear motion of the barrel into a rotational motion of the driving lever or for operating a bar in a direction for closing the barriers.

Abstract: An apparatus for manufacturing a light guide in a liquid crystal display and a manufacturing method thereof with a simplified mold structure. In the apparatus, an core material portion is fixed to a light guide molding stamper to constitute a molding device along with the stamper. A fixing member fixes the stamper to the core material portion. The molding device constitutes a mold for molding the light guide, along with a stationary core and a movable core. Accordingly, the stamper and the molding core are integrally formed and sealed, so that a mold structure can be simplified and stable manufacturing of the light guide can be provided.

Abstract: A liquid crystal display module that is adaptive for improving a ground connection between a printed circuit board and a ground plate. In the module, a top case is provided with a horizontal plane part and a vertical plane part bent vertically from the horizontal plane part to enclose the edge of the liquid crystal display panel. A ground plate is provided with an outer vertical supporting member being in contact with the outside of the vertical plane part of the top case to earth a printed circuit board. Accordingly, the plate is in double contact with the inside and the outside of the top case, so that the plate can be in contact with the top case in spite of a movement of the top case.

Abstract: In order to provide a dielectric resonator filter which can be reduced in dimension, can be reduced in height, and can be surface-mounted, in a dielectric resonator filter including a rectangular-parallelopiped or polygonal-pole-like metal cavity in which at least one dielectric resonator is arranged between one pair of input/output probes, the input/output probes are attached to corner portions of the rectangular-parallelopiped metal cavity.

Abstract: A liquid crystal display module that is adaptive for improving a ground connection between a printed circuit board and a ground plate. In the module, a top case is provided with a horizontal plane part and a vertical plane part bent vertically from the horizontal plane part to enclose the edge of the liquid crystal display panel. A ground plate is provided with an outer vertical supporting member being in contact with the outside of the vertical plane part of the top case to earth a printed circuit board. Accordingly, the plate is in double contact with the inside and the outside of the top case, so that the plate can be in contact with the top case in spite of a movement of the top case.