Abstract: A display and a method of manufacturing the same, including a substrate including an image displaying part comprising a plurality of pixels, a dummy testing pad, and a first insulating layer covering the dummy testing pad.

Abstract: Embodiments of a transistor capable of outputting uniform driving current despite deviations in manufacturing processes, and an organic light emitting diode display (OLED) capable of displaying high picture quality by employing the transistor are disclosed. The transistor comprises a semiconductor layer formed on a substrate and including a source connected to a source electrode through first and second contacts, a drain connected to a drain electrode through third and fourth contacts, a channel formed between the source and the drain. The transistor further comprises a gate aligned with the channel with a gate insulating layer interposed between the gate and the channel. The first to fourth contacts are formed along different parallel axes which are perpendicular to a direction along which a laser beam proceeds during transistor manufacture.

Abstract: A method of manufacturing an active matrix substrate that enables increased productivity due to a reduction in the number of patterning processes and low generation of particles during the patterning processes. The method includes forming a patterned electrode on a substrate, and covering the first electrode with an insulating film. A mono-crystalline semiconductor layer is then formed on the insulating film by attaching a first layer formed on a surface of a semiconductor wafer to the insulating film, and peeling off a portion of the semiconductor wafer. The semiconductor layer is then patterned and doped, in part, by utilizing the patterned electrode as a photo mask for light illuminated from a lower side of the substrate. This results in part in mono-crystalline active layers for thin film transistors, which are then configured to form a pixel for an active matrix substrate.

Abstract: A display device displays an image having a substantially uniform brightness by compensating for variations of the threshold voltages of driving transistors and compensating for the deterioration of an organic light emitting diode. A pixel includes an organic light emitting diode, two transistors, a storage capacitor, and a compensation unit. A driving transistor supplies a current to an OLED corresponding to the voltage in the storage capacitor. The compensation unit controls a voltage of a gate electrode of the driving transistor corresponding to a deterioration of the organic light emitting diode, and couples one electrode of the driving transistor to the data line during a compensation period, during which a threshold voltage of the driving transistor is compensated.

Abstract: A method of manufacturing an active matrix substrate that enables increased productivity due to a reduction in the number of patterning processes and low generation of particles during the patterning processes. The method includes forming a patterned electrode on a substrate, and covering the first electrode with an insulating film. A mono-crystalline semiconductor layer is then formed on the insulating film by attaching a first layer formed on a surface of a semiconductor wafer to the first insulating film, and peeling off a portion of the semiconductor wafer. The semiconductor layer is then patterned and doped, in part, by utilizing the patterned electrode as a photo mask for light illuminated from a lower side of the substrate. This results in part in mono-crystalline active layers for thin film transistors, which are then configured to form a pixel for an active matrix substrate.

Abstract: An organic light emitting diode display may have a power supply line that is coplanar with a first pixel electrode of an organic light emitting element. The power supply line, first source and drain electrodes of a first thin film transistor (TFT), second source and drain electrodes of a second TFT, a data line, and an upper electrode of a storage capacitor constitute source/drain wire lines. In addition to the power supply line, any one(s) of or all of the source/drain wire lines may be coplanar with the first pixel electrode.

Abstract: A fabrication method and a test method for a light emitting display that together produce a pixel portion of the display by fabricating pixel circuits, testing the pixel circuits, and subsequently fabricating light emitting diodes is disclosed.

Abstract: Embodiments of an organic electroluminescence display capable of preventing line mura generated due to manufacturing differences in driving transistors are disclosed. The manufacturing differences may be due to deviations of irradiated energy beam density generated from an excimer laser annealing process for crystallizing amorphous silicon into polycrystalline silicon. One embodiment of an organic electroluminescence display a plurality of pixel circuits arranged perpendicular to a laser scan direction for crystallization. Each pixel circuit comprises an organic light-emitting diode, and a driving transistor configured to supply current to the organic light-emitting diode. Each driving transistor comprises at least two channels formed therein, wherein the sums of lengths of the at least two channels in each driving transistor of the display are equal.

Abstract: In an organic light emitting display, the process of forming a storage capacitor is simplified, and deterioration of the properties and the reliability of the TFT is prevented. The organic light emitting display includes a substrate, a thin film transistor formed on one portion of the substrate, the thin film transistor having an active layer, a gate electrode, a gate insulating layer interposed between the active layer and the gate electrode, and a storage capacitor formed on another portion of the substrate. The storage capacitor has a first electrode formed on the same surface as the active layer, and a second electrode formed on the same surface as the gate electrode, with the gate insulating layer being interposed between the first electrode and the second electrode. The active layer and the first electrode are made of an intrinsic polysilicon layer.

Abstract: An organic light emitting diode display may have a power supply line that is coplanar with a first pixel electrode of an organic light emitting element. The power supply line, first source and drain electrodes of a first thin film transistor (TFT), second source and drain electrodes of a second TFT, a data line, and an upper electrode of a storage capacitor constitute source/drain wire lines. In addition to the power supply line, any one(s) of or all of the source/drain wire lines may be coplanar with the first pixel electrode.

Abstract: An organic light emitting display device and method for manufacturing the same is disclosed. The organic light emitting display device includes a driving circuit unit, a light emitting unit, and a common electric line. The driving circuit unit includes first and second thin film transistors arranged in a subpixel area on a substrate. The light emitting unit is formed on the driving circuit unit. The light emitting unit includes a first electrode electrically connected to a drain electrode of the second thin film transistor, a second electrode arranged on the first electrode, and a light emitting layer formed between the first and second electrodes. The common electric line is electrically connected to a source electrode of the second thin film transistor. The common electric line and the first electrode are formed on the same layer. The common electric line includes the same material as that comprised in the first electrode.

Abstract: An electro-luminescence display which obtains proper color realization even though identical data driving waveforms are applied to each group of R, G and B pixel cells. In the display, a plurality of data lines cross a plurality of gate lines to define a plurality of pixel cell areas. A plurality of power supply lines pass through the pixel cell areas. A switching device is provided in each pixel cell area in such a manner to be electrically connected to the gate line and the data line. A plurality of driving devices are patterned based on a ratio of channel width to channel length in accordance with the type of pixel cell area. Each driving device having a gate connected to one electrode of the switching device and a source connected to the power supply line at each of the pixel cell areas. A plurality of EL diodes are connected to the plurality of driving devices, respectively. A wiring is commonly connected to the plurality of power supply lines.

Abstract: A light emitting display for improving image quality and a Thin Film Transistor (TFT) includes at least one data line for transmitting a data signal, at least one scanning line for transmitting a selected signal, and at least one pixel electrically connected to the data line and the scanning line. The pixel includes a first TFT for responding to the selected signal and transmitting the data signal to an organic light emitting device, a capacitor electrically connected to the first TFT and storing a voltage corresponding to the transmitted data signal, a second TFT connected to the capacitor and supplying an organic light emitting device with a current corresponding to the data signal selected by the selected signal. The widths of respective channel regions of the first TFT are different from each other to reduce the kickoff voltage and improve the driving ability of the TFT, thereby improving the image quality of the light emitting display.

Abstract: Embodiments of an organic electroluminescence display capable of preventing line mura generated due to manufacturing differences in driving transistors are disclosed. The manufacturing differences may be due to deviations of irradiated energy beam density generated from an excimer laser annealing process for crystallizing amorphous silicon into polycrystalline silicon. One embodiment of an organic electroluminescence display a plurality of pixel circuits arranged perpendicular to a laser scan direction for crystallization. Each pixel circuit comprises an organic light-emitting diode, and a driving transistor configured to supply current to the organic light-emitting diode. Each driving transistor comprises at least two channels formed therein, wherein the sums of lengths of the at least two channels in each driving transistor of the display are equal.

Abstract: In a light emitting display and a fabrication method thereof, a stripe pattern displayed due to characteristic differences of a driving transistor is prevented, thereby enhancing picture quality. The light emitting display comprises: a plurality of light emitting devices formed adjacent to a region where data and scan lines cross each other; and a plurality of pixel circuits, each including a driving transistor for supplying current corresponding to a data signal to a respective one of the light emitting devices. The positions of the driving transistors are different from each other with respect to at least one of horizontal and vertical directions. With this configuration, a stripe pattern is prevented from appearing perpendicular to a scanning direction of a line beam emitted from an excimer laser during the fabrication method.

Abstract: Disclosed is a transistor and a pixel circuit and organic light emitting display including the transistor. The pixel circuit includes a first switching device transmitting a data signal in response to a selection signal, a storage capacitor storing a voltage corresponding to the transmitted data signal, and a driving transistor supplying a current corresponding to the voltage stored in the storage capacitor for driving an organic light emitting device. The driving transistor comprises a semiconductor layer including a substantially rectangular ring-shaped channel region and a source region and a drain region connected to opposite comers of the channel region, and a gate electrode facing the channel region across an insulating layer.

Abstract: A reflection type liquid crystal display device includes first and second gate lines, first and second data lines intersecting said first and second gate lines, an insulating layer covering said data lines, and a pixel electrode overlapping the first and second data lines in order to increase the aperture ratio. The overlapped area between the pixel electrode and the first data line and the areas between the pixel electrode and the second data line are substantially the same with each other. Each overlapped area covers substantially half of the length of the data line. Consequently, the reflective pixel electrodes cover the data lines substantially on the whole.

Abstract: An electro-luminescent (EL) display includes a gate line, first to third data lines defining first to third pixel regions, respectively, the first to third data lines crossing with the gate line, first to third power supply lines passing through the first to third pixel regions, switching devices connected electrically to the gate line and the data lines, the switching devices formed in the respective pixel regions, driving devices in the respective pixel regions wherein each gate and source of the driving devices are connected to each electrode of the switching devices and the power supply lines, respectively, first to third EL diodes connected to drains of the driving devices, the first to third EL diodes corresponding to the first to third pixel regions, respectively, and first to third power source supply terminals connected to the first to third power supply lines, respectively.

Abstract: An electro-luminescence display (ELD) wherein a voltage supply line is separated into a plurality of lines to reduce the number of pixels connected to each line. In the ELD, a pixel array has a number of pixels, each of which includes an electro-luminescence device having a luminescent layer made from an-electro-luminescent material, an anode electrode and a cathode electrode serving as a common electrode. The pixel array is arranged in an active matrix type. A gate driving circuit and a data driving circuit are connected, via a number of scanning electrode wiring and a number of data electrode wiring, respectively, to the pixel array, for switching the pixels to selectively drive the pixels. First and second supply voltages are applied from an external circuit to the first and second supply terminals. First and second power supply lines couple the first and second voltage supply terminals with the pixel array.

Abstract: A liquid crystal display device includes first and second gate lines, first and second data lines intersecting said first and second gate lines, an insulating film covering said gate lines, and a pixel electrode overlapping the first and second gate lines and the first and second data lines in order to increase the aperture ratio. The storage capacitor has a first storage capacitor electrode which is a portion of the first gate line, a second storage capacitor electrode a width of which is substantially same as that of the gate lines, the insulating film between the first and second storage capacitor electrodes, and a protecting film having a contact hole on the second storage capacitor electrode. The pixel electrode contacts the second storage capacitor electrode through the contact hole of the protecting film.