A highly reliable display device is provided. The display device includes a pixel electrode including first to fourth conductive layers, and an EL layer including a functional layer and a light-emitting layer. The second to fourth conductive layers are stacked in this order and provided to cover the first conductive layer. The functional layer includes a region that covers the second to fourth conductive layers and is in contact with the fourth conductive layer. The light-emitting layer is provided over the functional layer. The side surface of the first conductive layer has a tapered shape with a taper angle less than 90° in the cross section. The second to fourth conductive layers each include a tapered portion in a region overlapping the side surface of the first conductive layer. The visible light reflectance of the third conductive layer is higher than that of the first, second, and fourth conductive layers.

An organic light emitting diode which suppresses external light reflection while reducing loss of light generated in an organic light emitting layer is disclosed. An organic light emitting diode includes a substrate, an anode on the substrate, a bank on the anode and exposing a part of the anode to define an emission area, an organic light emitting layer on the emission area and the bank, a cathode on the organic light emitting layer, a plurality of light shielding patterns on the cathode and overlapping the bank, and a light loss inducing layer located on a same plane as the plurality of light shielding patterns and disposed between a pair of light shielding patterns from the plurality of light shielding patterns, the light loss inducing layer having has a same thickness as a thickness of that of the plurality of light shielding patterns, and overlaps the emission area.

A display device includes a light-emitting element layer including light-emitting elements in a plurality of kinds each emitting a light in a different color. A first electrode of the light-emitting elements includes a plurality of reflective layers including one RM and one TE stacked on the RM. The plurality of the reflective layers are stacked so that the RM and the TE are alternatively arranged in the stated order.

A display region includes a second display region that transmits light used in a camera on the inner side of a first display region. A first electrode in the first display region has a structure in which a first lower transparent conductive layer, a first reflective conductive layer, and a first upper transparent conductive layer are layered in order. A first electrode in the second display region has a structure in which a second lower transparent conductive layer, a second reflective conductive layer, and a second upper transparent conductive layer are layered in order. The second reflective conductive layer is thinner than the first reflective conductive layer on the inner side of an opening of an edge cover.

To prevent attenuation and modulation of light received or projected through a display surface.

An image display device includes a plurality of pixels arranged two-dimensionally. A pixel in a first pixel region including some pixels among the plurality of pixels includes a first light emitting region, a second light emitting region having a higher visible light transmittance than the first light emitting region, a first self-light emitting element that emits light from the first light emitting region, and a second self-light emitting element that emits light from the second light emitting region, and a pixel in a second pixel region other than the first pixel region among the plurality of pixels includes a third light emitting region having a lower visible light transmittance than the second light emitting region, and a third self-light emitting element that emits light from the third light emitting region.

A display device includes a light-emitting-element layer including a plurality of light-emitting elements each including a first electrode, a functional layer, and a second electrode. The plurality of light-emitting elements are formed to emit lights in different colors. A nanoparticle layer is provided on a surface of the first electrode toward a light-emitting layer, and contains metal oxide nanoparticles that are electrically conductive.

Disclosed are a preparation method thereof, a display panel, and a display device. The drive backboard comprises: a pixel circuit disposed on a base substrate; an anode disposed on a side of the pixel circuit facing away from the base substrate and electrically connected to the pixel circuit; and a first insulating layer disposed between the base substrate and the anode; the first insulating layer is provided with a groove surrounding the pixel circuit, the anode covers the first insulating layer, and an edge of the anode extends to an inner wall of the groove.

According to one embodiment, a display device includes a base, a first insulating layer disposed on the base, a lower electrode disposed on the first insulating layer, an organic layer disposed on the lower electrode and including a light-emitting layer and an upper electrode disposed on the organic layer, and the lower electrode includes a conductive layer including a contact area disposed over an entire circumference thereof when viewed in plan view, a reflective layer disposed above the conductive layer on an inner side of the contact area, which reflects light and a transparent electrode located on the conductive layer and the reflective layer and in contact with the contact area.

A display apparatus includes a substrate including a light emission area and a non-light emission area surrounding the light emission area, a circuit element layer provided on the substrate, a passivation layer provided on the circuit element layer, a planarization layer provided on the passivation layer, a first electrode provided on the planarization layer, a bank provided in the non-emission area on the first electrode, a light emitting layer provided on the first electrode and the bank, and a second electrode provided on the light emitting layer, wherein the planarization layer and the bank include a material that absorbs light.

A display device is provided, which includes a light sensor in a display panel. The display device comprises a substrate having a unit pixel area and a unit light sensor area, a first electrode over the substrate, a second electrode over the first electrode, a third electrode over the second electrode, a light emitting layer in the unit pixel area and disposed between the first electrode and the second electrode, and a light active layer disposed in the unit light sensor area and disposed between the second electrode and the third electrode.