Abstract: Disclosed is an apparatus for fabricating a preform used to manufacture a photonic crystal optical fiber having multiple holes extending in a longitudinal direction thereof. The apparatus includes a housing for containing a raw material for the photonic crystal optical fiber; a first support member positioned at one end of the housing; a second support member positioned at the other end of the housing; and multiple tubes respectively supported by the first and second support members to be at least partly located within the housing, wherein diameter of each multiple tube can be variable selectively depending on an amount of fluid poured through the open ends of the tubes.

Abstract: A flat panel display device for a small module application is disclosed in the present invention.

Abstract: A liquid crystal display and a method for fabricating the same include a first substrate having an active layer with source/drain regions formed therein, a gate line and a data line extending in directions perpendicular to each other formed thereon, a dummy gate insulating film and a dummy gate electrode both formed on the first substrate in fixed patterns isolated from the gate line, an interlayer insulating film on the first substrate inclusive of the dummy gate electrode with a step, a drain electrode formed on the interlayer insulating film to overlap on upper regions of the dummy gate electrode so as to be in contact with the drain region and have a step to the data line, the data line formed on the interlayer insulating having a step to the drain electrode, a passivation film formed on the interlayer insulating film inclusive of the dummy gate electrode and the data line, a contact hole formed to expose the drain electrode overlapped with the dummy gate electrode, and a pixel electrode overlapping upper

Abstract: A method of fabricating a preform for a holey optical fiber, which prevents gel tubes from cracking includes the steps of: (a) forming sol using a starting material of silica glass; (b) pouring the silica glass in the sol state produced in step (a) into a plurality of molds, and gelating the silica glass to form a plurality of gel tubes, each having one air hole; (c) drying the gel tubes after removing the plurality of gel tubes from the individual molds; (d) applying a heat treatment of the gel tubes dried in step (c) to remove moisture and impurities contained in the gel tubes; (e) stacking the gel tubes, which have been subjected to heat treatment in step (d), in a predetermined array; and (f) sintering the stacked gel tubes, thereby vitrifying the gel tubes.

Abstract: A porous optical fiber provided with air holes and a method for manufacturing the same are disclosed. The porous optical fiber includes a core having a first refractivity extended in a longitudinal direction, an external cladding layer having a second refractivity surrounding the core, and an internal cladding layer having a third refractivity formed between the core and the external cladding layer and provided with a plurality of air holes scattered therethrough.

Abstract: Disclosed is a process for producing a holey fiber preform through a sol-gel molding method. The process comprises the steps of: (a) expanding a plurality of elongated tubes, wherein the tubes can be expanded/contracted by control of pressure in the tubes, (b) positioning the expanded tubes in the mold in a predetermined arrangement; (c) introducing a sol gel into the mold; (d) separating the gel from the mold, and contracting the tubes to form elongated air holes in the gel; and (e) removing the tubes. In the process, the tubes for forming air holes can be removed with no impact on the dried gel.

Abstract: An array substrate for use in a liquid crystal display device is fabricated by the steps of forming a buffer layer on a substrate; forming a polycrystalline-silicon active layer on the buffer layer, the said active layer having an island shape; forming a gate insulation layer on the buffer layer to cover the polycrystalline-silicon active layer; forming a first metal layer on the gate insulation layer; forming a second metal layer on the first metal layer; patterning the first and second metal layer to form a gate electrode, a gate line and a gate shorting bar; forming a source contact area and a drain contact area at both sides of the polycrystalline-silicon active layer; forming an interlayer insulator on the gate insulation layer to cover the patterned first and second metal layers; patterning the interlayer insulator and the gate insulation layer so as to form a first contact hole to the source contact area and the second contact hole to a drain contact area, patterning a portion of the interlayer insulat

Abstract: An array substrate for use in a liquid crystal display device is fabricated by the steps of forming a buffer layer on a substrate; forming a polycrystalline-silicon active layer on the buffer layer, the said active layer having an island shape; forming a gate insulation layer on the buffer layer to cover the polycrystalline-silicon active layer; forming a first metal layer on the gate insulation layer; forming a second metal layer on the first metal layer; patterning the first and second metal layer to form a gate electrode, a gate line and a gate shorting bar; forming a source contact area and a drain contact area at both sides of the polycrystalline-silicon active layer; forming an interlayer insulator on the gate insulation layer to cover the patterned first and second metal layers; patterning the interlayer insulator and the gate insulation layer so as to form a first contact hole to the source contact area and the second contact hole to a drain contact area, patterning a portion of the interlayer insulat

Abstract: A method for fabricating silica glass is disclosed. The method includes the steps of (a) hydrolyzing silicon alkoxide; (b) hydrolyzing heterometal alkoxide containing Bi and Ti components; (c) mixing a solution containing hydrolyzed products of the silicon alkoxide and a solution containing hydrolyzed products of the heterometal alkoxide, thus forming a mixed solution; (d) molding gel by pouring the mixed solution into a forming mold; (e) drying the molded gel; and (e) performing heat-treatment of the dried gel so as to vitrify the gel.

Abstract: Disclosed are fabrication method and device for a porous optical fiber preform. The fabrication method includes the steps of (a) rotating one or more rotating disks in a deposition furnace, wherein a plurality of shoot rods are coupled to the one or more rotating disks and spaced at predetermined intervals along a circumferential direction of the one or more rotating disks; (b) supplying a raw material in a gaseous state into the deposition furnace to deposit the raw material onto the shoot rods; (c) after the formation of a silica shoot by deposition of the raw material on the shoot rods, eliminating the shoot rods from silica shoot; and (d) sintering the silica shoot from which the shoot rods are eliminated.

Abstract: A shift register having a built-in level shifter includes a buffer outputting a shift pulse using a first clock signal and a first supply voltage via voltages at first and second nodes; a first controller controlling the voltage of the first node via the start pulse and the second node; and a second controller controlling the second node voltage using the first and second supply voltage via the start pulse and the second clock signal. The level shifter includes a third controller forming a current path between third supply voltage input line and first supply voltage input line controlling a third node using the first supply voltage and a third supply voltage via the voltage of the second node and two of first to fourth clock signals; and an output part outputting the level-shifted shift pulse using the first and third supply voltage via the voltage at the third node.

Abstract: A transflective liquid crystal display includes gate and data lines perpendicular to each other and defining a plurality of unit pixels. Each unit pixel includes a plurality of sub-pixel regions, which each have a transmissive portions and a reflective portion. The transmissive portions are gathered together within each unit pixel at corners of the sub-pixel regions opposing corners in which thin film transistors near the crossings of the gate and data lines are disposed. A passivation layer covering the thin film transistors and the gate and data lines has an opening that corresponds to the transmissive portions in the unit pixel. A reflector is formed over the passivation layer in each sub-pixel region and corresponds in position to the reflective portion. A pixel electrode in each sub-pixel region contacts the thin film transistor through a contact hole in the passivation layer.

Abstract: A transflective liquid crystal display device includes a first substrate including transmissive and reflective pixels. Gate and data lines on the first substrate cross each other to define a pixel region, with a thin film transistor at each crossing. The transmissive and reflective pixels correspond to respective pixel regions. A first passivation layer covers the thin film transistor and has a transmissive hole in the transmissive pixel. A first reflector is disposed on the first passivation layer in the reflective pixel. A second passivation layer is disposed on the first reflector and in the transmissive hole. A pixel electrode on the second passivation layer is connected to the thin film transistor. A second substrate opposing the first substrate has a color filter layer on an inner surface thereof. The color filter layer contains R, G and B sub color filters, which each correspond to a pixel region.

Abstract: A shift register includes stages shifting an input signal with phase-delayed control signals and first and second supply voltages, and for applying shifted input signals as output signals and as input signals of succeeding stages. Each of the stages includes a first controller selectively applying an input signal and a first supply voltage to a first node between first to third transistors; a second controller selectively applying the first and second supply voltages to a second node between fourth and fifth transistors; and an output buffer selectively applying a predetermined control signal and the first supply voltage as an output signal to a stage output line between sixth and seventh transistors, wherein the fifth transistor may be turned on to sustain a voltage present at the second node equal to the first supply voltage when the fourth transistor is turned off.

Abstract: A liquid crystal display panel includes: a display part having pixels; a non-display part having driving circuits for driving the display part; a control line formed in the non-drive display part for applying a drive signal to signal lines of the display part; a scribed line formed in an area of the non-display part crossing the control line; and a shorting bar that runs along the scribed line and bypasses around an area in which the scribed line crosses the control line.

Abstract: An array substrate for use in a liquid crystal display device is fabricated by the steps of forming a buffer layer on a substrate; forming a polycrystalline-silicon active layer on the buffer layer, the said active layer having an island shape; forming a gate insulation layer on the buffer layer to cover the polycrystalline-silicon active layer; forming a first metal layer on the gate insulation layer; forming a second metal layer on the first metal layer; patterning the first and second metal layer to form a gate electrode, a gate line and a gate shorting bar; forming a source contact area and a drain contact area at both sides of the polycrystalline-silicon active layer; forming an interlayer insulator on the gate insulation layer to cover the patterned first and second metal layers; patterning the interlayer insulator and the gate insulation layer so as to form a first contact hole to the source contact area and the second contact hole to a drain contact area, patterning a portion of the interlayer insulat

Abstract: A bi-directional driving circuit of a flat panel display device and method for driving the same is disclosed in the present invention.

Abstract: A flat panel display device for a small module application is disclosed in the present invention.

Abstract: An array substrate for a transflective liquid crystal display device includes a substrate; a thin film transistor on the substrate, the thin film transistor including an active layer, a gate electrode, a source electrode and a drain electrode; a gate line connected to the gate electrode; a data line connected to the source electrode, the data line defining a pixel region with the gate line; an active extension portion extending from the active layer to the pixel region, a first insulating layer on the active extension portion; a storage electrode on the first insulating layer over the active extension portion; a second insulating layer on the storage electrode; a reflective plate on the second insulating layer over the storage electrode, the reflective plate extending over one end of the data line and connected to an adjacent reflective plate; a third insulating layer on the reflective plate; and a pixel electrode on the third insulating layer, the pixel electrode extending over one end of the data line and c

Abstract: A driving device includes a plurality of blocks arranged in sequence, each of the blocks includes ninth switching elements connected to received a start pulse, four clock signals, and two source voltages. The switching elements are arranged to output the four clock signals in sequence and to alternatively output the four clock signals in a reverse sequence.