Abstract: A display device may include a display panel including a substrate that includes a display area and a pad area adjacent to the display area, and a first pad and a second pad on the pad area of the substrate, and a chip-on-film package over the pad area of the substrate with the first pad and the second pad in between, the chip-on-film package including an insulation layer, a first wiring on an upper surface of the insulation layer and electrically connected to the first pad, and a second wiring on a lower surface of the insulation layer and electrically connected to the second pad. A first signal having alternating voltage levels may be applied to the first wiring, and a second signal having a constant voltage level may be applied to the second wiring.

Abstract: A display device includes a substrate, a first conductive layer disposed on the substrate, a first insulating layer disposed on the first conductive layer, a semiconductor layer disposed on the first insulating layer, a second insulating layer disposed on the semiconductor layer, a second conductive layer disposed on the second insulating layer and overlapping the semiconductor layer, and a third insulating layer disposed on the second conductive layer, wherein the first conductive layer includes two end portions separated by cutting a region of the first conductive layer, and the two end portions of the first conductive layer are electrically connected by a first connecting part.

Abstract: A display panel includes a substrate including a display area in which elements used for display are disposed and a peripheral area, and an inspection element group disposed in the peripheral area of the substrate, where the inspection element group includes defects that are repeatedly disposed.

Abstract: A display device includes: a substrate including a display area and a peripheral area positioned outside the display area; a first power supply line positioned in the peripheral area; a first insulating layer positioned on the first power supply line; and a second power supply line positioned on the first insulating layer in the peripheral area. The first power supply line includes a first main wire extending in a first direction and a first sub-wire diverging toward the display area from the first main wire, the second power supply line includes a second main wire extending in the first direction and a second sub-wire diverging toward the display area from the second main wire, the first main wire includes an internal edge positioned near the first sub-wire and an external edge facing the internal edge, and the second main wire does not overlap the internal edge in a plan view.

Abstract: A display device may include a display panel including a substrate that includes a display area and a pad area adjacent to the display area, and a first pad and a second pad on the pad area of the substrate, and a chip-on-film package over the pad area of the substrate with the first pad and the second pad in between, the chip-on-film package including an insulation layer, a first wiring on an upper surface of the insulation layer and electrically connected to the first pad, and a second wiring on a lower surface of the insulation layer and electrically connected to the second pad. A first signal having alternating voltage levels may be applied to the first wiring, and a second signal having a constant voltage level may be applied to the second wiring.

Abstract: A display device may include a display panel including a substrate that includes a display area and a pad area adjacent to the display area, and a first pad and a second pad on the pad area of the substrate, and a chip-on-film package over the pad area of the substrate with the first pad and the second pad in between, the chip-on-film package including an insulation layer, a first wiring on an upper surface of the insulation layer and electrically connected to the first pad, and a second wiring on a lower surface of the insulation layer and electrically connected to the second pad. A first signal having alternating voltage levels may be applied to the first wiring, and a second signal having a constant voltage level may be applied to the second wiring.

Abstract: A display device may include a display panel including a substrate that includes a display area and a pad area adjacent to the display area, and a first pad and a second pad on the pad area of the substrate, and a chip-on-film package over the pad area of the substrate with the first pad and the second pad in between, the chip-on-film package including an insulation layer, a first wiring on an upper surface of the insulation layer and electrically connected to the first pad, and a second wiring on a lower surface of the insulation layer and electrically connected to the second pad. A first signal having alternating voltage levels may be applied to the first wiring, and a second signal having a constant voltage level may be applied to the second wiring.

Abstract: A display device may include a display panel including a substrate that includes a display area and a pad area adjacent to the display area, and a first pad and a second pad on the pad area of the substrate, and a chip-on-film package over the pad area of the substrate with the first pad and the second pad in between, the chip-on-film package including an insulation layer, a first wiring on an upper surface of the insulation layer and electrically connected to the first pad, and a second wiring on a lower surface of the insulation layer and electrically connected to the second pad. A first signal having alternating voltage levels may be applied to the first wiring, and a second signal having a constant voltage level may be applied to the second wiring.

Abstract: A display device may include a display panel including a substrate that includes a display area and a pad area adjacent to the display area, and a first pad and a second pad on the pad area of the substrate, and a chip-on-film package over the pad area of the substrate with the first pad and the second pad in between, the chip-on-film package including an insulation layer, a first wiring on an upper surface of the insulation layer and electrically connected to the first pad, and a second wiring on a lower surface of the insulation layer and electrically connected to the second pad. A first signal having alternating voltage levels may be applied to the first wiring, and a second signal having a constant voltage level may be applied to the second wiring.

Abstract: A thin film transistor includes: a substrate, a semiconductor layer disposed on the substrate, a first gate electrode and a second gate electrode disposed on the semiconductor layer, a gate insulating layer disposed between the semiconductor layer and the first and second gate electrodes and having a first through hole between the first and second gate electrodes and a capping layer covering the first gate electrode and contacting the semiconductor layer via the first through hole. The capping layer includes a conductive material.

Abstract: An organic light-emitting display apparatus includes a pad electrode structure having excellent reliability due to the prevention of propagation of a crack to the pad electrode. The organic light-emitting display apparatus includes further an interlayer insulating layer on the pad electrode, a conductive barrier layer, and a planarization insulating layer. The interlayer insulating layer includes a plurality of openings that expose an upper surface of the pad electrode. The conductive barrier layer is on the plurality of openings and the interlayer insulating layer. The planarization insulating layer covers an edge of the conductive barrier layer. The planarization insulating layer is in the openings and covers an edge of the conductive barrier layer. An upper portion of the planarization insulating layer may be substantially planar with an upper portion of the conductive barrier layer on convex portions of the interlayer insulating layer.

Abstract: An organic light-emitting display apparatus includes: a thin film transistor including an active layer, a gate electrode, a source electrode, a drain electrode, a first insulating layer, and a second insulating layer; a pad electrode comprising a first pad layer and a second pad layer on the first pad layer; a third insulating layer covering the source electrode and the drain electrode and an end portion of the pad electrode; a pixel electrode comprising a semi-transmissive electrically conductive layer at an opening in the third insulating layer; a protection layer between the pixel electrode and the first insulating layer; a fourth insulating layer having an opening at a location corresponding to the opening formed in the third insulating layer and covering the end portion of the pad electrode; an emission layer on the pixel electrode; and an opposing electrode on the emission layer.

Abstract: An organic light-emitting display (OLED) device is provided. The OLED device includes: a substrate of which a pixel region is defined; a light-condensing means disposed on the pixel region of the substrate; a lower electrode disposed on the light-condensing means; an organic layer, which is disposed on the lower electrode and includes an organic light-emitting layer; and an upper electrode disposed on the organic layer. A method for manufacturing such an OLED device is also provided.

Abstract: A thin film transistor includes: a substrate, a semiconductor layer disposed on the substrate, a first gate electrode and a second gate electrode disposed on the semiconductor layer, a gate insulating layer disposed between the semiconductor layer and the first and second gate electrodes and having a first through hole between the first and second gate electrodes and a capping layer covering the first gate electrode and contacting the semiconductor layer via the first through hole. The capping layer includes a conductive material.

Abstract: A display device includes a normal pixel including a first driving transistor and a first compensation transistor connected to a gate and drain of the first driving transistor, and a compensation pixel including a second driving transistor and a second compensation transistor connected to a gate and drain of the second driving transistor. The second compensation transistor is open.

Abstract: A thin film transistor includes: a substrate, a semiconductor layer disposed on the substrate, a first gate electrode and a second gate electrode disposed on the semiconductor layer, a gate insulating layer disposed between the semiconductor layer and the first and second gate electrodes and having a first through hole between the first and second gate electrodes and a capping layer covering the first gate electrode and contacting the semiconductor layer via the first through hole. The capping layer includes a conductive material.

Abstract: The organic light emitting display device includes a substrate including a thin film transistor (TFT) formed thereon, the TFT including a first insulating layer disposed between an active layer and a gate electrode, and a second insulating layer disposed between the gate electrode and source and drain electrodes; a pad electrode including a first pad layer disposed on a same layer as that where the source and drain electrodes are formed, and a second pad layer on the first pad layer; a bonding assistant layer on the substrate; a third insulating layer on the bonding assistant layer and including a first opening; a pixel electrode disposed in the first opening and electrically coupled to one of the source and drain electrodes; and a fourth insulating layer on the pixel electrode to cover a peripheral end portion of the pixel electrode and defining a pixel through a second opening.

Abstract: In an organic light-emitting display device and a method of manufacturing the same, the organic light-emitting display device includes: a first insulating layer, a transparent conductive layer, and a second insulating layer which are sequentially formed on a substrate; a thin film transistor including an active layer formed under the first insulating layer, a gate electrode including a part of the transparent conductive layer as a lower electrode layer, and source and drain electrodes connected to both sides of the active layer; an organic light-emitting device including a sequentially stacked structure comprising a part of the transparent conductive layer as a pixel electrode, an intermediate layer which includes an emission layer, and an opposite electrode; and a capacitor including a first electrode and a second electrode, which includes a part of the transparent conductive layer as a lower electrode layer; wherein the transparent conductive layer and the second insulating layer include a hole.

Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a thin film transistor including an active layer, a gate electrode, a source electrode, and a drain electrode, a first insulating layer arranged between the active layer and the gate electrode, and a second insulating layer arranged between the gate, source, and drain electrodes. The OLED display also includes a third insulating layer covering the source and drain electrodes, wherein an opening is defined in each of the second and third insulating layers and wherein the openings substantially overlap. The OLED display further includes a pixel electrode formed in the openings defined in the second and third insulating layers and including a semi-permeable metal layer.

Abstract: An organic light-emitting display apparatus including: a substrate; at least one thin-film transistor disposed on the substrate; at least one capacitor disposed on the substrate and including a first electrode and a second electrode; a pixel electrode connected to the at least one thin-film transistor; a counter electrode facing the pixel electrode and including a reflective material; an organic emission layer disposed between the pixel electrode and the counter electrode; a first optical characteristic adjusting layer disposed between the substrate and the pixel electrode and formed on a same layer as the second electrode of the at least one capacitor; and a second optical characteristic adjusting layer disposed between the first optical characteristic adjusting layer and the pixel electrode.