Abstract: According to one embodiment, a display device includes a substrate, an insulating layer above the substrate, a lower electrode, a rib, a partition, an upper electrode, an organic layer between the electrodes, a dam structure including a protrusion in a surrounding area, and a conductive layer in the surrounding area covering at least a part of the dam structure and connected to the partition. The partition and the conductive layer include a conductive lower portion and an upper portion protruding from the lower portion. The end portion of the conductive layer is between the protrusion and the end portion of the substrate.

Abstract: A display device includes a light-emitting element; a first transistor and a second transistor connected in series between the light-emitting element and a driving power line; a third transistor electrically connected to a gate electrode of the first transistor; and a fourth transistor connected in parallel between a drain electrode of the first transistor and the light-emitting element, wherein a ratio of a channel width W1 to a channel length L1 of the first transistor (a W1/L1 ratio) and a ratio of a channel width W2 to a channel length L2 of the second transistor (a W2/L2 ratio) are larger than a ratio of a channel width W3 to a channel length L3 of the third transistor (a W3/L3 ratio) and a ratio of a channel width W4 to a channel length L4 of the fourth transistor (a W4/L4 ratio).

Abstract: An organic electroluminescence display device includes a substrate including a first surface, a first area arranged on the first surface and including one or more first spacers and a plurality of pixels each including a light-emitting layer, a third area arranged on the first surface, surrounding the first area, and not including spacers, and a second area arranged on the first surface, surrounding the third area, and including one or more second spacers. The plurality of pixels each including the light-emitting layer is arranged along a first direction and a second direction intersecting the first direction, and a length of the third area in the second direction is a total length of pitches for at least two pixels.

Abstract: According to one embodiment, a display device includes a substrate, an insulating layer above the substrate, a lower electrode above the insulating layer in a display area, an upper electrode facing the lower electrode, an organic layer provided in the display area and a surrounding area, and a first ridge in the surrounding area. The first ridge includes a lower portion, and an upper portion provided on the lower portion and including an end portion protruding from a side surface of the lower portion. At least part of the organic layer is divided by the first ridge in the surrounding area.

Abstract: According to one embodiment, a display device includes a substrate, an insulating layer above the substrate, a lower electrode in a display area, a rib including an aperture overlapping the lower electrode, a conductive partition above the rib in the display area, an upper electrode facing the lower electrode and connected to the partition, an organic layer at least partially located between the lower and upper electrodes and emitting light based on a potential difference between the electrodes, a feed line in a surrounding area around the display area, and a conductive layer provided above the rib in the surrounding area and connected to the feed line and the partition.

Abstract: The first light-emitting layer is higher in light-emission start voltage than each of the second light-emitting layer and the third light-emitting layer. The second light-emitting layer is higher in visibility of the emission color than each of the first light-emitting layer and the third light-emitting layer. The electroluminescence layer has an inter-pixel section between an adjacent pair of the openings and along the upper surface of the insulation layer. The inter-pixel section between the first opening and the second opening has a first resistance value. The inter-pixel section between the second opening and the third opening has a second resistance value. The inter-pixel section between the third opening and the first opening has a third resistance value. The first resistance value is larger than each of the second resistance value and the third resistance value.

Abstract: According to one embodiment, a display device includes a substrate, an insulating layer, a lower electrode, a rib including an aperture and covering a periphery of the lower electrode, a partition above the rib, an upper electrode being in contact with the partition, and an organic layer between the electrodes. The organic layer includes a first organic layer that is in contact with the lower electrode through the aperture, and a second organic layer on the partition. At least a part of the periphery of the lower electrode is located between the insulating layer and the partition in a thickness direction of the insulating layer.

Abstract: According to one embodiment, a display device includes a base, a display unit containing pixels, a power supply circuit, a touch controller and a switching circuit disposed between the display unit, the power supply circuit and the touch controller. The pixels each includes a pixel circuit and a display element including a lower electrode connected to the pixel circuit, an upper electrode disposed to oppose the lower electrode and an organic layer including a light-emitting layer disposed between the lower electrode and the upper electrode. The upper electrode is connected to the switching circuit, and the switching circuit selectively switches between connecting the upper electrode to the power supply circuit and connecting the upper electrode to the touch controller.

Abstract: According to one embodiment, a display device includes a substrate, a pixel circuit, an insulating layer including a contact hole, a lower electrode connected to the pixel circuit through the contact hole, an upper electrode, an organic layer between the lower and upper electrodes, a rib including an aperture, a partition above the rib, and a filling material inside the contact hole. The organic layer includes a first organic layer in contact with the lower electrode through the aperture, and a second organic layer on the partition. The partition and the rib overlap at least part of the contact hole and the filling material in plan view.

Abstract: According to one embodiment, a display device Includes a substrate, a pixel circuit, an insulating layer including a contact hole, a lower electrode connected to the pixel circuit via the contact hole, an upper electrode, an organic layer between the lower electrode and the upper electrode, a rib formed of an inorganic material and including an aperture, and a partition above the rib. The organic layer includes a first organic layer in contact with the lower electrode via the aperture and a second organic layer located on the partition and spaced apart from the first organic layer. The partition overlaps an entire of the contact hole in plan view.

Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.

Abstract: According to one embodiment, a display device includes a base, a display unit containing pixels, a power supply circuit, a touch controller and a switching circuit disposed between the display unit, the power supply circuit and the touch controller. The pixels each includes a pixel circuit and a display element including a lower electrode connected to the pixel circuit, an upper electrode disposed to oppose the lower electrode and an organic layer including a light-emitting layer disposed between the lower electrode and the upper electrode. The upper electrode is connected to the switching circuit, and the switching circuit selectively switches between connecting the upper electrode to the power supply circuit and connecting the upper electrode to the touch controller.

Abstract: Provided is a display device including: a capacitor having a first electrode, a first insulating film over the first electrode, and a second electrode over the first insulating film; and a first transistor over the capacitor. The first transistor includes the second electrode, a second insulating film over the second electrode, an oxide semiconductor film over the second insulating film, and a first source electrode and a first drain electrode over the oxide semiconductor film. The first source electrode and the first drain electrode are electrically connected to the oxide semiconductor film.

Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.

Abstract: Provided is a display device including: a capacitor having a first electrode, a first insulating film over the first electrode, and a second electrode over the first insulating film; and a first transistor over the capacitor. The first transistor includes the second electrode a second insulating film over the second electrode, an oxide semiconductor film over the second insulating film, and a first source electrode and a first drain electrode over the oxide semiconductor film. The first source electrode and the first drain electrode are electrically connected to the oxide semiconductor film.

Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.

Abstract: According to one embodiment, a display device comprising a base, a first insulating layer, a first lower electrode, a second lower electrode, a first wiring, a second insulating layer disposed on the first wiring, a first organic layer disposed on the first lower electrode, a second organic layer disposed on the second lower electrode, a first separation wall disposed on the second insulating layer, and an upper wiring disposed continuously on the first organic layer, the second organic layer, and the first separation wall, wherein the upper wiring is electrically connected to the first wiring via a contact hole that penetrates the first separation wall and the second insulating layer.

Abstract: In the second area, the lower base surface of the wirings is in contact with the first inorganic insulating film including a stepped portion including upper surfaces having mutually different heights and being adjacent to each other in the second direction, and a stepped surface rising from the upper surfaces except the uppermost surface. The first inorganic insulating film constitutes at least the upper surfaces except the lowest surface, and the stepped surface. The adjacent wirings include a pair of convex portions protruding toward a direction facing each other. One and the other of the pair of convex portions are separated to face each other at a position where the stepped portion does not exist in the second area in the first inorganic insulating film.

Abstract: According to one embodiment, a display device includes a base, a display unit containing pixels, a power supply circuit, a touch controller and a switching circuit disposed between the display unit, the power supply circuit and the touch controller. The pixels each includes a pixel circuit and a display element including a lower electrode connected to the pixel circuit, an upper electrode disposed to oppose the lower electrode and an organic layer including a light-emitting layer disposed between the lower electrode and the upper electrode. The upper electrode is connected to the switching circuit, and the switching circuit selectively switches between connecting the upper electrode to the power supply circuit and connecting the upper electrode to the touch controller.

Abstract: According to one embodiment, a display device includes a base, a plurality of pixels, a power supply line and a power supply line drive circuit. The pixels each include a pixel circuit, a display element including a lower electrode, an upper electrode and an organic layer including a light-emitting layer. The upper electrode is connected to the power supply line that provides a predetermined potential to the upper electrode. The power supply line drive circuit supplies, to the power supply line, a first potential to the upper electrode during a light-emitting period and supplies, to the power supply line, a second potential to the upper electrode during a non-light-emitting period.