Abstract: A lead insertion system adapted to insert a lead into a glass tube includes a first robot on which a first gripper is mounted and a second robot on which a second gripper is mounted. The first gripper grips the glass tube and the second gripper grips the lead. The lead insertion system includes a flame heater heating the glass tube gripped by the first robot and the lead gripped by the second robot with a flame. The second robot inserts the lead into the glass tube held by the first robot with the lead heated by the flame and the glass tube heated and softened by the flame.

Abstract: An apparatus for processing a substrate comprises a processing vessel having a processing space inside, a substrate support unit that supports and rotates the substrate in the processing vessel, and a nozzle unit that dispenses a processing liquid onto the substrate. The nozzle unit comprises a nozzle that dispenses the processing liquid and an ultraviolet (UV) light supply unit that emits UV light to activate radicals of the processing liquid dispensed onto the substrate.

Abstract: A lucent waveguide plasma light source has a quartz waveguide body with a central through bore. The bore has orifices at its opposite ends, opening centrally of flat, end faces of the body. Between these the body has a circular cylindrical periphery. A drawn quartz tube is inserted into the body. The tube has its one end closed and a collar which locates the tube in the bore and is fused to the faces at the orifices of the bore. The tube is evacuated and charged with excitable material and closed as a sealed void. A Faraday cage and an antenna in a bore in the body are provided for feeding microwave energy to the light source. When powered with microwaves, resonance is established in the wave guide and a plasma is established in the void, wherein Light radiates and leaves the waveguide and Faraday cage radially of the periphery.

Abstract: Disclosed is a method of producing an organic light emitting device, an organic light emitting device produced by using the method, and an apparatus used in the method. The method includes preparing a first electrode, forming one or more organic material layers on the first electrode, and forming a second electrode on the organic material layers, wherein the method includes changing functions of predetermined pattern regions of one or more layers of the organic material layers or the electrodes.

Abstract: Operation to produce an intermediate product for a crucible for a LUWPL is as follows: a) a body 2 is preheated and placed on a support, with its bore concentric with a tube 4 supported in a chuck and connected to a inflation means; b) the tube is heated with the chuck being rotated for evenness of heating; c) when the temperature of the tube is detected to be the softening point of the quartz of the tube, its rotation is stopped and it is advanced into a bore 3 in the body 2; d) advance is stopped when the distal, sealed end is detected to have reached a determined protrusion 18; e) simultaneously with the advance being stopped, inflation gas is admitted into the tube, to inflate it albeit it marginally, and bring its outer surface 5 into intimate contact with the surface 6 of the bore 4.

Abstract: To prevent bending of an electrode shaft portion by a method which requires minimum increase in production cost, in an electrode mount for a high pressure discharge lamp. A manufacturing method of an electrode mount for the high pressure discharge lamp includes: a process of subjecting the electrode mount to a heat treatment, the electrode mount including an electrode and a metal foil which are welded to each other; and an oxidation process of producing an oxide on a surface of the electrode shaft portion of the electrode by laser irradiation to form an oxidation portion on the surface, wherein a laser irradiation position is determined such that a whole or part of the oxidation portion is included in a sealing portion of the high pressure discharge lamp when the electrode mount is embedded in the sealing portion.

Abstract: A dual external electrode fluorescent lamp and manufacturing method thereof comprising a 1st glass tube with both ends open and an inner wall optionally coated with a fluorescent material, wherein the diameter of the opened ends is extended; connecting the 1st glass tube with two 2nd glass tubes by joining both opened ends of the 1st glass tube to the two both-end opened 2nd glass tubes that have a diameter larger than that of the 1st glass tube; joining a 1st multi-tube for the enlargement of an electrode area in the one 2nd glass tube or a ‘flare’ structure having one closed end to one end of 2nd glass tube through insertion after spreading one end widely, and enlarging an electrode area in the other 2nd tube and joining a 2nd multi-tube having an exhaust port to the other 2nd tube through insertion; cutting and sealing a portion of the exhaust port after vacuuming the inside of the glass tubes and injecting discharge gas inside the glass tubes through the connection of an exhaust system to the exhaust port

Abstract: The invention is directed to a lamp assembly, and particularly to a method of fixing a first light source and a second light source in a single lamp assembly. More specifically, the invention provides a lamp assembly and a mechanism for fixing at least two light sources therein, at least one of which is a compact fluorescent light source, an incandescent light source, or a halogen light source, and where the fixing mechanism used involves soldering the lead-in wires of the second light source to a printed circuit board of the lamp assembly, which is in operative connection with the lamp ballast.

Abstract: This disclosure provides systems, methods and apparatus related to an illumination system for a display device. In one aspect, the illumination system includes a light guide having a view region, which directly overlies display elements of a display, and a ledge region between the view region and a light source that injects light into the light guide. The ledge region is coated with an at least partially non-transmissive layer. The layer can be at least partially absorptive and/or at least partially reflective. In some implementations, the layer can include microstructures configured to turn steep-angle light such that it is redirected across the light guide at a shallower angle. In some implementations, the boundary between the ledge region and the view region of the light guide can have a nonlinear shape.

Abstract: A plasma crucible has a through bore and two tubes butt scaled on to the end faces of the crucible. One of the tubes is closed prior to the filling of the crucible. The tube is tipped off and worked in a glass lathe to form it to have a flat end. After evacuation, dosing and gas fill, the other tube is tipped off in the similar manner.

Abstract: A high intensity discharge lamp comprises a discharge vessel and two electrode rods having substantially flat ends facing to each other in opposite positions within the discharge vessel. A spiral coil of wire is wound at least on a part of the surface of at least one of the electrode rods. The spiral coil protrudes over said end of the corresponding electrode rod and thus forms a hollow cavity for extending dimmable wattage range of the lamp.

Abstract: A permanent adapter for incandescent lighting fixtures can removably receive LEDs but cannot itself be removed from the fixture.

Abstract: A method of forming an LED lamp with a desired distribution of phosphor is disclosed. The method includes the steps of mixing a plurality of phosphor particles in an uncured polymer resin for which the viscosity can be controlled in response to temperature to form a substantially uniform suspension of the phosphor particles in the resin. The uncured resin is then placed into a defined position adjacent an LED chip and the temperature of the resin is increased to correspondingly decrease its viscosity but to less than the temperature at which the resin would cure unreasonably quickly. The phosphor particles are encouraged to settle in the lowered-viscosity resin to a desired position with respect to the LED chip, and the temperature of the resin is thereafter increased to the point at which it will cured and solidify.

Abstract: Disclosed are LED lamp assemblies that are substantially inseparable. The LED lamp assemblies use discrete components that are individually manufactured and then assembled in a manner that substantially prevents disassembly or disengagement of components. An interference fit can be used to substantially secure components of the LED lamp assemblies. Bonding techniques can also be used, including adhesive and solvent bonds, as well as thermal bonds, including sonic bonds.

Abstract: A method of manufacturing an organic light-emitting display apparatus according to a laser-induced thermal imaging (LITI) method, the method including patterning a transfer layer arranged on a donor film; disposing the donor film on an acceptor substrate; laminating the donor film on the acceptor substrate; transferring the transfer layer of the donor film to the acceptor substrate; and removing the donor film from the acceptor substrate.

Abstract: Simple, rapid and low-cost assembly methods of a LED lamp are provided. A standard lamp base having two electrodes and a cavity is soldered with a resistor to the first one of the electrodes, and then filled with a thermally conductive electric insulator in the cavity. A circuit board is attached onto the thermally conductive electric insulator and then soldered to the second electrode and the resistor. An LED device is soldered onto the circuit board such that the LED device and the resistor are serially connected between the electrodes. Preferably, the circuit board has a through hole through which a thermally conductive member is inserted into the thermally conductive electric insulator with its lower end, and the LED device is placed onto the upper end of the thermally conductive member.

Abstract: An illumination device has a board, a plurality of light emitting elements that are mounted on the board, the plurality of light emitting elements being disposed such that a light irradiation direction of each light emitting element becomes substantially perpendicular to the board, and a plurality of lenses. Each of the plurality of lens is paired with one of the plurality of light emitting elements. A relative positional relationship between the light emitting element and the lens in each pair varies according to a position on the board in which the corresponding light emitting element is disposed.

Abstract: A component is provided that includes at least one passageway. In another aspect, a component, such as a lamp or a vehicular washer jet, is made of layers of material, a light curable material and/or multiple built-up materials. Another aspect uses a three-dimensional printing machine to emit material from an ink jet printing head to build up a component.

Abstract: The present disclosure involves an LED lamp. The LED lamp includes a plurality of light-emitting diode (LED) light sources located on a substrate. At least a subset of the LED light sources is free of a phosphor coating. The LED lamp includes a multi-layered cap structure located over at least the subset of the LED light sources. The cap structure contains a phosphor material and a diffuser material. The cap structure is physically separated from the subset of the LED light sources by a gap. The LED lamp includes a cover structure positioned over and surrounding the LED light sources and the cap structure.

Abstract: A method for producing a sealing region, into which an element is fused and which comprises a first sealing region section and a second sealing region section is provided. The method may include applying an encapsulation made of a material onto the element between the production of the first sealing region section and the production of the second sealing region section.

Abstract: To provide a flickerless discharge lamp which can remove hydrogen by a simple and safe means even if the lamp is a large discharge lamp with high pressure when lit, the discharge lamp has a pair of electrodes and a hydrogen getter (4) in the interior of an arc tube, the hydrogen getter (4) being formed of a container (41) made of metal which is hydrogen permeable and a hydrogen absorbent body (42) that is composed of a metal which can absorb hydrogen that is enclosed inside of the container (41) and is fixed to an inside wall of the container (41).

Abstract: An energy-saving lamp with a high-power double spiral energy-saving light tube. The double spiral energy-saving light tube includes two single spiral light tubes having complementary structure. One spiral light tube rotates into the other in the same direction, they geometrically fit into one another, and they complement one another. The two light tubes work independently. Reliability is improved. Short glass tubes can be used for producing the two single spiral light tubes, and the production process is simple and suitable for mass production. The luminous efficiency of the energy-saving lamp of the invention exceeds 80 lm/W. A single spiral light tube of between 14 and 22 mm in diameter corresponds to the power of the lamp of between 100 and 250 W.

Abstract: An energy-saving fluorescent lamp with two or more integrated-shaping discharge tubes, automatically formed by a one-shot modelin to a U-tube with a desired curvature. Each of discharge tubes are disposed upon a conveyer for being shipped into a heater and is treated in portions of the discharge tube by one or more said wide flame nozzles of preset temperatures for a preset duration simultaneously into a U-tube with a pair of leg tubes for fitting into a pair of integrated-shaping dies when said mechanic arm opens up said pair of dies for molding into a U-tube with a preset curvature radius.

Abstract: A plasma lamp apparatus. The apparatus has an arc tube structure having an inner region and an outer region in one or more embodiments. The arc tube structure has a first end comprising an associated first end diameter and a second end comprising a second end diameter according to a specific embodiment. The apparatus also has a center region provided between the first end and the second end in one or more embodiments. The center region has a center diameter, which is less than a first end diameter and/or a second end diameter.

Abstract: In a method of fabricating a planar light source, a first substrate is formed at first. First electrodes approximately parallel to each other are formed on the first substrate. Sets of first dielectric patterns are formed on the first substrate. Each set of the first dielectric patterns includes at least two first striped dielectric patterns, and each of the first striped dielectric patterns covers one of the first electrodes correspondingly. The edges of the top of each first striped dielectric pattern are raised in a peak shape. A phosphor layer is formed between the first striped dielectric patterns of each set of the first dielectric patterns. A second substrate is formed. The first and second substrates are bound; meanwhile, a discharge gas is injected into the discharge space.

Abstract: The present invention is directed to a method for manufacturing a high-pressure discharge lamp including: a spherical portion forming a light-emitting portion (1a); sealing portions that are connected with both ends of the spherical portion; an electrode (2a) that is sealed to each of the sealing portions; and a metal foil (3a) that is connected with a rear end of each electrode. A vessel provided with a cylindrical glass tube (8) on both ends of the spherical portion is used, a connection structure of the metal foil and the electrode are disposed in the glass tube such that a front end of the electrode is positioned in the spherical portion, and the glass tube is melted by heat and shrunk for sealing the metal foil and the electrode so as to form the sealing portion. An inner diameter ? of the glass tube before the heat-melt processing and a distance L from an edge of the metal foil to the internal space of the spherical portion are set to satisfy a relationship of L/??1.

Abstract: A discharge lamp configured to suppress temperature increases in the electrode on the opening part side of a reflective mirror is described. The discharge lamp includes an F electrode and an R electrode having shapes before forming the melt electrodes that satisfy at least one of the following conditions (a) to (c): (a) The diameter of the core wire of the F electrode is d1f, and the diameter of the core wire of the R electrode is d1r, then d1f>1.2×d1r; (b) The wire diameter of the coil of said F electrode is d2f, and the wire diameter of the coil of the R electrode is d2r, then d2f>1.2×d2r; (c) the number of windings of the coil of the F electrode is nf, and the number of windings of the coil of the R electrode is nr, then nf>1.2×nr.

Abstract: An extra-high pressure mercury lamp includes an arc tube made of quartz glass. The lamp includes an arc tube portion and sealing portions connected to the arc tube portion, and encloses 0.15 mg/mm3 or more of mercury. A pair of electrodes are disposed face to face in the arc tube. Each electrode has a rod portion and a base end portion. The base end portion of each electrode is embedded in one of the sealing portions. One of the pair of electrodes serves as a cathode and includes a head portion, which has a larger diameter than the rod portion. A cylinder portion is connected to a rear end portion of the head portion. The cylinder portion extends in the axis direction of the electrode and surrounds the rod portion. The cylinder portion has an inner surface separated from the rod portion.

Abstract: Various embodiments of a coupled cavity traveling wave tube are disclosed herein. For example, some embodiments provide a coupled cavity traveling wave tube including a plurality of core segments arranged in spaced-apart fashion to form an electron beam tunnel, a first longitudinal member adjacent the plurality of core segments alternately extending toward and receding from successive core segments, and a second longitudinal member adjacent to the plurality of core segments alternately extending toward and receding from successive core segments.

Abstract: In an excimer lamp, rare gas and fluorine are enclosed inside a translucent ceramics arc tube. External electrodes are formed on an outer surface of the arc tube. A condition of 2.5+0.5 log(CF)?G?14?4 log(CF) is satisfied in the case of 0.1?CF?10, wherein G (mm) is a discharge gap in the arc tube and CF (%) is molar concentration of the fluorine.

Abstract: A method for constructing a lamp for radiating a warning signal within a desired polar angular range around a mean polar direction includes the steps of fixing a base body at a mounting location, arranging each of an annular support element having an annular reflector, an inner and an outer annular optical system concentrically around a lamp axis to form an optical arrangement and arranging a plurality of lighting elements on the annular support element in an annular distribution around the lamp axis. The annular reflector, inner annular optical system and outer annular optical system and portions thereof are shaped to reflect and/or direct light radiated by the plurality of lighting elements in such a manner that light emerges from the outer annular optical system in a direction within the desired polar angular range around the mean polar direction.

Abstract: A light-emitting device comprising a population of quantum dots (QDs) embedded in a host matrix and a primary light source which causes the QDs to emit secondary light and a method of making such a device. The size distribution of the QDs is chosen to allow light of a particular color to be emitted therefrom. The light emitted from the device may be of either a pure (monochromatic) color, or a mixed (polychromatic) color, and may consist solely of light emitted from the QDs themselves, or of a mixture of light emitted from the QDs and light emitted from the primary source. The QDs desirably are composed of an undoped semiconductor such as CdSe, and may optionally be overcoated to increase photoluminescence.

Abstract: A method of assembling an airtight LED light bulb has the steps of: connecting a stem device with an LED device, drying the LED device, connecting the stem device with a bulb envelope, extracting air in the bulb envelope via a pipe, filling the bulb envelope with nitrogen or inert gas via the pipe, sealing an opening of the pipe which is located outside the bulb envelope to make the bulb envelope completely airtight and connecting a cap with the bulb envelope. Because the bulb envelope is airtight, moisture in the environment can not damage the LED device, and the steps of extracting air in the bulb envelope via the pipe and filling the bulb envelope with nitrogen or inert gas via the pipe are feasible. Consequently, the LED device will not easily be oxidized or dampened, so the lifespan of the airtight LED light bulb can be prolonged.

Abstract: An optic for producing an asymmetrical beam of light for restricting light output to an area below a midplane of the optic, and for directing light to the sides or down from the midplane.

Abstract: A high-pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, with electrodes respectively being led out from the discharge vessel by means of a feed-through via capillaries, wherein a tubular cermet part, which consists of individual layers of different composition layered axially in succession, is fitted on the capillary, each layer containing Mo and Al2O3, the proportion of Mo in the first layer facing toward the capillary being from 3 to 15 vol. % and in the last layer being from 85 to 97 vol. %, and a molybdenum cover cap, the cover cap being welded to the feed-through and the cover cap being connected to the cermet part by means of solder containing metal, and the connection between the capillary and the cermet part being established by means of high-melting glass solder or sinter-active Al2O3 powder.

Abstract: A composite luminous vessel container 3 has a hollow and polycrystalline alumina capillary 1 and one or more transparent disk(s) 2 of monocrystalline alumina. The polycrystalline alumina luminous container member 3 functions as a luminous part for a high intensity discharge lamp. Light is emitted from the inside of the polycrystalline alumina luminous member 3 and radiated through the transparent monocrystalline alumina disk to the outside. The light emitted through the transparent window has a low loss due to the scattering so that the lamp efficiency can be improved. In the case of the light emitted through the transparent monocrystalline alumina, the size of the light source is substantially equal to the distance between the electrodes, so that the light source can be utilized as a point light source. The light emitted from the point light source can be subjected to optical control by combination with reflectors or lenses.

Abstract: A method for connection of a discharge vessel of a discharge lamp to a tubular piece is provided, wherein the discharge vessel is heated at the connection point which is provided with the tubular piece, and the material of the discharge vessel which has been softened at the connection point is torn open such that it rests on the inner face of the tubular piece, and a continuous hole is produced in the discharge vessel.

Abstract: A fluorescent lamp that can be easily manufactured to provide high brightness and high efficiency, a method of manufacturing the same, and a backlight unit having the same are provided. First and second non-emissive glass tube are joined to an emissive glass tube coated with a phosphor, and first and second electrodes are formed on outer surfaces of the first and second non-emissive glass tubes. The first and second non-emissive tubes may have the same diameter as the emissive glass tube. The first and second non-emissive glass tubes are simply joined to the emissive glass tube, thereby reducing the manufacturing process and cost. The first and second non-emissive glass tubes are formed to be thinner than the emissive glass tube, thereby enhancing the brightness and efficiency of the fluorescent lamp.

Abstract: A fabrication method for discharge lamps is disclosed, which comprises providing a glass tube of diameter between 2 and 20 mm, the glass tube having an inner wall coated with a fluorescent phosphor and having a through-passage with a first end and a second end, connecting a first dielectric electrode to the first end of the glass tube by applying an adhesive to a contacted portion of the glass tube and the first dielectric electrode, and sintering the contacted portion of the glass tube and the first dielectric electrode to securely connect the glass tube and the first dielectric electrode. Subsequently, processes of filling and sealing are conducted to complete the fabrication of the discharge lamps.

Abstract: A manufacturing method for flexible display apparatus includes following steps. A carrier frame is formed on a rigid substrate. A flexible substrate is formed on the carrier substrate, wherein a border of the flexible substrate is supported by the carrier frame. A display unit is formed on the flexible substrate. At least a portion of the flexible substrate is separated from the carrier frame. In the manufacturing method, the flexible substrate and the carrier frame can be easily separated.

Abstract: An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together.

Abstract: A manufacturing process and apparatus used to produce a container which is capable of accommodate an Hg source for a discharge lamp. The manufacturing includes producing a helical cutout in a coil former, inserting a flexible strip-like wire fabric into the helical cutout, automatically producing a coiled hollow-cylindrical strand at an outlet of the coil former by means of the strip-shaped wire fabric being moved through the helical cutout, and producing a coiled hollow-cylindrical container from the strand.

Abstract: A projection light emitting diode (LED) module is provided. According to one embodiment, the LED module converts LED light to polarized light and emits the polarized light. One embodiments of the LED module includes a reflective polarizer positioned in a light emission path of the LED light, wherein the reflective polarizer polarizes the LED light, and the reflective polarizer further transmits the first polarization state light and reflects the second polarization state light; and a polarization conversion element bonded to the reflective polarizer, the polarization conversion element positioned between the LED light and the reflective polarizer, wherein the polarization conversion element coverts the second polarization state light to a desired polarization state light. A reflecting cup may be provided to increase the reflection of light back through the polarization conversion element and the reflective polarizer. The LED module may be configured for use with commercially available LED packages.

Abstract: A silicon quantum dot fluorescent lamp is made via providing a high voltage source between a cathode assembly and an anode assembly. The cathode assembly is made by providing a first substrate, coating a buffer layer on the first substrate, coating a catalytic layer on the buffer layer and providing a plurality of nanometer discharging elements on the catalytic layer. The anode assembly is made via providing a second substrate, coating a silicon quantum dot fluorescent film on the second substrate with and coating a metal film on the silicon quantum dot fluorescent film.

Abstract: A process for producing a lamp, including forming one or more electrical connectors having a predetermined shape for making electrical connections to one or more light source assemblies mounted at predetermined locations on a non-planar support. The light source assemblies are formed by forming an electrical insulator on a peripheral region of an electrically conductive receptacle, forming an electrically conductive contact adapted to fit the peripheral region, attaching the electrically conductive contact to the electrical insulator, mounting a light source in the receptacle, and making a first electrical connection between a first electrically conductive contact of the receptacle and a first contact of the light source, and a second electrical connection between a second electrically conductive contact of the receptacle and a second contact of the light source. The light sources mounted in the electrically conductive receptacles are light emitting diodes and are encapsulated in transparent medium.

Abstract: A method is provided for formation of a glass to metal seal at one end of a quartz lamp tube, as part of the process of manufacturing a complete lamp tube. The method involves a direct sealing of the tube of quartz glass with a seal material surrounding an electrode or its electrical feed through. The seal material may be in the form of a bead having a generally elliptical or spherical shape.

Abstract: An edge narrowing method for a display panel is disclosed. The display panel includes a first substrate, a second substrate, a sealant and a light-shielding area. The sealant is disposed between the first substrate and the second substrate. The light-shielding area is disposed between the first substrate and the sealant. The method includes the steps of providing the display panel, a grinding apparatus and a polishing apparatus; tilting the display panel so that the first substrate and a grinding member of the grinding apparatus have a first grinding angle therebetween; grinding the first substrate and the light-shielding area with the grinding apparatus while the display panel is tilted at the first grinding angle, thereby forming a first grinding end surface; stopping grinding of the first substrate and the light-shielding area when the width of the light-shielding area is between 0.35 and 1 mm; and polishing the first grinding end surface with the polishing apparatus to form a first end surface.

Abstract: An organic light emitting display is formed with a plurality of display panels that are cut and separated from a mother substrate to form a unit display panel. Here, the substrate has a groove on its outer surface to improve the deformation strength of the cutting surface and to protect the strength of the panel from being degraded by improving the quality of the cutting cross-section. The organic light emitting display includes: a first substrate formed with a plurality of display panels partitioned by a cutting line and having a first groove on its outer surface corresponding to the cutting line; and a second substrate overlapped with an upper part of the first substrate and having a second groove on its outer surface corresponding to the cutting line, wherein the first and second grooves are formed with cutting positions lower than that of the outer surfaces of the respective substrates.

Abstract: An electric connection part between a bulb and a terminal is masked without using a special masking material when a lamp unit is produced through a primary injection step of molding a lamp main body and a lens part while using a movable mold and a fixed mold, a film forming step of covering the lamp main body with a film, and a secondary injection step of uniting the lamp main body and the lens part together with a resinous material. The bulb is incorporated through a step set between the primary injection step and the film forming step. In the state in which the bulb is incorporated in the lamp main body, the surface of the top of the bulb is covered with a film, and a part hidden by the shadow of the film is masked, and hence electric insulation properties are secured.

Abstract: A display device includes an insulating substrate having a display area, a line part including a data line and a gate line insulated from and crossing each other, a common voltage supplying part formed outside an outer circumference of the display area, an insulating layer formed on the common voltage supplying part and including a contact hole formed on an area in which some lines of the line part extend substantially in parallel with each other, and a common electrode electrically connected with the common voltage supplying part exposed through the contact hole.