Abstract: Disclosed are a display for a multi-function key pad and an electronic device having the display that have both input and output functions. The display for the multi-function key pad includes an electrophoretic display panel provided with a plurality of display regions arranged in a matrix form with having a non-display region as a boundary, a circuit board provided on the display panel and including a plurality of openings formed on regions corresponding to the display regions and a plurality of keys formed on regions that are outer circumference edges of the openings and correspond to the non-display region, and a pad provided on the circuit board and including a plurality of transparent windows formed on regions corresponding to the openings and a plurality of pressing units formed on regions that are outer circumference edges of the transparent windows and correspond to the keys.

Abstract: A liquid crystal display device has a first substrate, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first and the second substrates. The first substrate includes a plurality of pixels, each of which includes a thin film transistor and a pixel electrode. The second substrate includes a color filter facing a pixel electrode of one of the pixels, and a black matrix formed on a region except the color filter. The black matrix has an opening that exposes a portion of one of the gate electrodes. External light entering the opening is reflected from the gate electrode.

Abstract: A toothbrush for a pet dog is disclosed, in which a groove is longitudinally formed in a center of a head in a direction of a handle, and a cushion material is provided in a surrounding surface, a lower surface and the groove. When a pet dog bites a toothbrush with teeth during a tooth brushing, it is possible to prevent teeth from fracture while preventing a lot of pain occurring when teeth collide with a hard toothbrush. Toothbrush hairs planted in a head are shaped depending on a tooth shape of a pet dog, so it is possible to reliably brush off plague attached on the upper side of a cervical ridge of premolars and molars of a pet dog without applying over stimulation on the gum.

Abstract: An organic light emitting device and a method of manufacturing the same, the device including: a substrate; a barrier layer; a first electrode; a second electrode; and an organic layer interposed between the first electrode and the second electrode, wherein the barrier layer includes an SiO layer and an SiOxNy layer.

Abstract: An organic light emitting display, and a method of manufacturing the same, the organic light emitting display including: a substrate including thin film transistors (TFTs) formed on a surface thereof; organic light emitting diodes (OLEDs) disposed on the TFTs; an encapsulating unit that encapsulates the OLEDs; and spacers formed on the encapsulating unit. The OLEDs include first electrodes electrically connected to the TFTs, a pixel defining layer formed around the first electrodes, organic thin layers formed on the first electrodes, and second electrodes formed on the organic thin layers. The spacer is formed of moisture absorbing material, and faces the pixel defining layer.

Abstract: An organic electroluminescence device which includes a power line formed on the same layer as source and drain electrodes of a thin film transistor (TFT) and formed on a substrate on which the TFT is formed, a first insulating layer formed on the TFT, a lower electrode that electrically connected to one of the source and drain electrodes of the TFT and disposed on the first insulating layer, a first auxiliary power line and a second auxiliary power line formed on the same layer as the lower electrode in the second insulating layer, a second insulating layer formed on an edge portion of the lower electrode and not formed on the second auxiliary power line, wherein an opening that exposes a portion of the lower electrode is formed, an organic film formed on a substrate; and an upper electrode formed on the substrate.

Abstract: The disclosed is a density sensing device of a fuel cell system and a fuel cell system having the density sensing device. The density sensing device includes a density sensor that includes a collision sensor and a variable resistor coupled to the collision sensor. The collision sensor is dipped into a fuel solution, and the collisions of molecules of the fuel solution are detected in the collision sensor. The resistance of the variable resistor varies depending on an amount of the collision detected by the collision sensor. The resistance further is converted to a density by the use of a table that includes a relationship between resistance and density. The density sensing device can further include a sensor driver. The sensor driver can be a piezoelectric member that is attached to the collision sensor. The collision sensor vibrates together with the piezoelectric member when a driving signal is applied to the piezoelectric member, which improves the accuracy of the measurement of the density.

Abstract: An arrangement producing metal nanoparticles includes a ?-ray irradiator installed in a radioactive shielding room, a reactor that is disposed to oppose the ?-ray irradiator, and a power supply installed outside the radioactive shielding room to supply power to the reactor. The reactor includes a container receiving reaction materials and transmitting the energy of ?-rays to reaction materials arranged inside of the reactor, an agitator that is installed in the container to be capable of rotating, and a driving source for receiving the power from the power supply to drive the agitator.

Abstract: A battery unit and a lithium secondary battery employing the same are provided. The battery unit includes a positive electrode plate having a positive current collector and a positive active material layer formed on at least one plane of the positive current collector, a positive electrode lead electrically connected with the positive current collector, a negative electrode plate having a negative current collector and a negative active material layer formed on at least one plane of the negative current collector, a negative electrode lead electrically connected with the negative current collector, and a separator interposed between the positive electrode plate and the negative electrode plate, having a width greater than that of each electrode plate, and having different widths of protruding portions which stick out on either side of the electrode plate.

Abstract: An input device that inputs a failure signal of a flat panel display in which a failure is found in a process of inspecting flat panel displays of a mother substrate state is provided. The input device includes an input unit that is positioned in the front of a mother substrate and spaced apart from the mother substrate and that has a plurality of labels in which a kind of a failure is written and at least one selection button to generate a failure selection signal, a guide unit that includes a first guide rail that guides horizontal movement of the input unit and a second guide rail that guides vertical movement of the input unit, a position detector that detects a position of the input unit to generate a position signal, and a controller that receives a failure selection signal from the input unit and receives a position signal from the position detector to map failure information of the mother substrate.

Abstract: An organic electro luminescence display and driving method uses an image determination unit to generate image determination signals indicative of whether images generated in response to data signals are moving images still images, selects a gamma value corresponding to the brightness of the ambient light sensed, applies gamma correction signals corresponding to selected gamma values to control grey level voltages of the data signals, generates a selection signal based on a comparison of a previously set reference value with the photo sensor signal, and generates R?,G?,B? data to vary an input image RGB data to correspond to the selection signal, varies a change range of the changing R?,G?,B? data to correspond to the image determination signal, and supplies the varied change range of the changing data (R?,G?,B? data) to the data driver.

Abstract: A display device is provided with a display panel displaying variable visual images, a transparent protective unit located at a front side of the display panel, an adhesive layer that is formed between the display panel and the transparent protective unit to adhere the transparent protective unit to the display panel, and a fixing member disposed at a rear side of the display panel and surrounding and fixing side surfaces of the display panel and the adhesive layer.

Abstract: Provided is an organic light emitting diode display device which can improve brightness and color coordinate characteristics in all emission wavelength ranges, and thus can enhance light extraction efficiency and color reproducibility. The organic light emitting diode display device includes a substrate, a first electrode disposed on the substrate, an organic layer disposed on the first electrode and having an emission layer, a second electrode disposed on the organic layer, and first and second refraction layers. A stack of the first and second refraction layers is disposed either between the first electrode and the substrate or on the second electrode. A refractive index of the first refraction layer is smaller than a refractive index of the second refraction layer. A thickness of the first refraction layer is no greater than 100 nm.

Abstract: A secondary battery has a safety vent formed on a can accommodating an electrode assembly. The safety vent is formed in a groove shape and the depth of the groove varies. The fracture site of the safety vent is controlled by adjusting the depth of the safety vent. The safety vent is prevented from damaging the electrode assembly when the electrode assembly is inserted in the can, and contacts the safety vent.

Abstract: The present invention relates to a plasma display device and a driving method thereof. The plasma display device includes a first switch, and a second switch. The first switch has a first end electrically connected to a first power source that supplies a first voltage and a second end electrically connected to the plurality of first electrodes, and gradually increases a voltage of the plurality of first electrodes during a reset period. The second switch has a first end electrically connected to a second power source that supplies a second voltage that is less than the first voltage and a second end electrically connected to the plurality of first electrodes. The first and second switches are simultaneously turned on in the reset period.

Abstract: The present invention relates to an OLED display and a manufacturing method thereof, and the OLED display according to the present invention includes a display substrate including an OLED, a sealing member disposed opposite to the display substrate and covering the OLED, and a sealant interposed between the display substrate and the sealing member and that seals them to each other, and the sealant has a curved inner surface and an angular outer surface in at least one of corner areas of the display substrate and the sealing member.

Abstract: In a mask assembly and a method of fabricating the same, when the mask assembly is fabricated by tensile welding a pattern mask to a mask frame, a tensile welding portion of the pattern mask welded to the mask frame is structurally changed. Thus, the pattern mask can be easily welded to the mask frame, and patterns of the pattern mask can be precisely aligned, thereby minimizing stain failure rate due to the mask assembly. The mask assembly includes: a mask frame including an opening and a support; and a pattern mask including a pattern portion having a plurality of patterns arranged in a matrix and a plurality of tensile welding portions extending from the pattern portion in a first direction and spaced apart from each other in a second direction perpendicular to the first direction.

Abstract: A fuel cell system includes a fuel cell body to generate electrical energy using a reaction of hydrogen and oxygen; a reformer to generate a reformed gas containing hydrogen by reforming fuel and to supply the reformed gas to the fuel cell body; a fuel tank to store the fuel in a partially liquefied state and to supply the fuel to the reformer; a case to encase the fuel cell body and the reformer; and a refrigeration unit attached to the case to store ambient air of the fuel tank, the ambient air of the fuel tank being cooled by latent heat of vaporization of the fuel.

Abstract: An organic light emitting display includes a substrate, a semiconductor layer arranged on the substrate, an organic light emitting diode arranged on the semiconductor layer, an encapsulant arranged on an top surface periphery of the substrate, which is an outer periphery of the semiconductor layer and the organic light emitting diode, an encapsulation substrate bonded to the encapsulant, and a bonding agent arranged on an under surface of the substrate which is opposite to the encapsulant.

Abstract: A secondary battery prevents shorts between electrodes by discharging an electrode assembly downward through a can provided with notches at a lower part thereof when the battery is vertically compressed. The secondary battery includes: an electrode assembly; a can having an upper opening to receive the electrode assembly and a notched part at a lower part thereof; and a cap assembly to seal the can.