An organic electroluminescence (EL) element including an anode, a light-emitting layer above the anode, a first functional layer on and in contact with the light-emitting layer, a second functional layer on and in contact with the first functional layer, and a cathode above the second functional layer. A lowest unoccupied molecular orbital (LUMO) level of the first functional layer is lower than at least one of a LUMO level of the second functional layer and a Fermi level of a metal material included in the second functional layer.

An organic electroluminescence device includes a base material including a recessed portion on one face side, and a light emitting element. The light emitting layer including a reflective layer disposed at least on a surface of the recessed portion, a filling layer that has optical transparency and is filled and disposed in the recessed portion with the reflective layer interposed between the recessed portion and the filling layer, a first electrode that has optical transparency and is disposed at least on an upper-layer side of the filling layer, an organic layer that includes at least a light emitting layer and is disposed on an upper layer of the first electrode, and a second electrode that has optical transparency and is disposed on an upper-layer side of the organic layer. The organic electroluminescence device includes a display region divided into a plurality of unit regions separated from each other. The unit regions each has a light emitting area and a non emissive area that are partitioned. The light emitting area includes the light emitting element, and the non emissive area includes a light absorption layer.

A flexible display apparatus includes a flexible substrate including a display area and a bending area outside the display area, the bending area to be bent around a bending axis; an inorganic insulating layer on the flexible substrate; a cut unit in the inorganic insulating layer in the bending area; a stress relaxation layer filling the cut unit and extending into the display area; a wiring part on the stress relaxation layer in the bending area; a planarization layer covering the wiring part and on the stress relaxation layer; and a display on the planarization layer in the display area and electrically connected to the wiring part.

It is an object to provide a flexible light-emitting device with long lifetime in a simple way and to provide an inexpensive electronic device with long lifetime using the flexible light-emitting device. A flexible light-emitting device is provided, which includes a substrate having flexibility and a light-transmitting property with respect to visible light; a first adhesive layer over the substrate; an insulating film containing nitrogen and silicon over the first adhesive layer; a light-emitting element including a first electrode, a second electrode facing the first electrode, and an EL layer between the first electrode and the second electrode; a second adhesive layer over the second electrode; and a metal substrate over the second adhesive layer, wherein the thickness of the metal substrate is 10 ?m to 200 ?m inclusive. Further, an electronic device using the flexible light-emitting device is provided.

An organic light-emitting diode display panel and a manufacturing method therefor, and a display apparatus are provided. The orange light-emitting diode display panel comprises: a base substrate; an anode and an auxiliary electrode arranged on the base substrate, wherein the anode and the auxiliary electrode are insulated from each other, a pixel definition layer arranged on the anode and the auxiliary electrode, wherein the pixel definition layer has a pixel opening region exposing the anode and a via exposing the auxiliary electrode; and the luminescent layer and a cathode sequentially arranged on the pixel definition layer, wherein the cathode is electrically connected to the auxiliary electrode arranged in the via.

Provided is an organic light emitting display device including a base substrate, a pixel layer, a quantum dot layer, and a thin film encapsulation part. The pixel layer includes a plurality of organic light emitting diodes on the base substrate. The quantum dot layer includes quantum dots on the pixel layer. The thin film encapsulation part is between the quantum dot layer and the pixel layer, and seals the pixel layer. The thin film encapsulation part includes a first inorganic film and an organic film. The first inorganic film has a plurality of first auxiliary films, each having a first refractive index, and a plurality of second auxiliary films, each having a second refractive index that differs from the first refractive index, alternately stacked with the plurality of first auxiliary films along a thickness direction of the base substrate.

An OLED display panel is provided which can control the problem of shedding even in high definition panels. Metal wiring 5 which conducts with an earth line of a flexible printed substrate 15 is provided on a substrate 1. A display area 2 comprised from a plurality of OLED elements is provided at the center of the substrate 1 and four low resistance metal films 3 are provided along each of four edges of the display area 2 on a surface of insulation films 8, 10 at the periphery of the display area 2. Among these, one low resistance metal film 3 conducts with the metal wiring 5 via a contact 3a.

An organic electroluminescence (EL) display panel includes pixels arranged in a matrix of rows and columns, and includes: a substrate; pixel electrode layers that are arranged on the substrate in the matrix; an insulating layer that is provided above the substrate and the pixel electrode layers, and has elongated openings and a grooved portion for each of the pixels, the openings extending in a column direction and being arranged in a row direction, the grooved portion having an upper opening and a bottom and being communicated with at least one of the openings in plan view; organic functional layers that are provided above the pixel electrode layers, and include light emitting layers in which organic electroluminescence occurs in the openings; and a light-transmissive counter electrode layer that is provided above the organic functional layers. Cross-sectional profiles of the openings taken along the row direction are uniform in the column direction.

Embodiments of the present disclosure disclose a display apparatus, an electroluminescent display panel and a method of acquiring and displaying an image by the display apparatus. The display apparatus includes an electroluminescent display panel; and a camera. The electroluminescent display panel includes: a substrate; and a plurality of pixel units disposed in a display area on the substrate and each including at least two sub-pixels. The display area has an image acquiring region including the sub-pixels, at least one of the sub-pixels in the image acquiring region has an opaque display zone and a transparent zone, and the camera is disposed on a side, facing away from the pixel units, of the substrate of the electroluminescent display panel.

It is an object to provide a flexible light-emitting device with long lifetime in a simple way and to provide an inexpensive electronic device with long lifetime using the flexible light-emitting device. A flexible light-emitting device is provided, which includes a substrate having flexibility and a light-transmitting property with respect to visible light; a first adhesive layer over the substrate; an insulating film containing nitrogen and silicon over the first adhesive layer; a light-emitting element including a first electrode, a second electrode facing the first electrode, and an EL layer between the first electrode and the second electrode; a second adhesive layer over the second electrode; and a metal substrate over the second adhesive layer, wherein the thickness of the metal substrate is 10 ?m to 200 ?m inclusive. Further, an electronic device using the flexible light-emitting device is provided.