A display panel has an irregular display area and includes a substrate, a first electrode layer, a first organic-material layer, and a second electrode layer. The first electrode layer is disposed on the substrate. The first organic-material layer is disposed on the first electrode layer, in which the first organic-material layer includes a first portion and a second portion which are connected to each other. The second electrode layer is disposed on the first electrode layer. The first organic-material layer is configured to produce electroluminescence phenomenon by a bias applied by the first and second electrode layers, and the first portion has brightness less than that of the second portion under the bias.

A display apparatus includes a substrate comprising a first pixel region and a second pixel region adjacent to the first pixel region; a circuit device layer on the substrate; a first light-emitting device module on the circuit device layer, the first light-emitting device module comprising a first light-emitting device overlapping the first pixel region to display a first color; and a second light-emitting device module on the first light-emitting device module, the second light-emitting device module having a first pixel penetration hole overlapping the first pixel region, the second light-emitting device module further comprising a second light-emitting device overlapping the second pixel region to display a second color different from the first color.

An organic electroluminescent device is provided, including a substrate and a composite anode structure disposed thereon, wherein the composite anode structure includes a lower metal oxide layer, a metallic silver layer and an upper metal oxide layer, wherein metallic silver at portions of a surface of the metallic silver layer which are not covered by the upper metal oxide due to defects of the upper metal oxide layer includes silver oxide. During the preparation of the organic electroluminescent device, the substrate is stored in the atmosphere for a long time while maintaining the performance of the substrate substantially unchanged, thereby improving the performance and the yield of the device.

Described is a process for the production of a layered body S2 comprising: i. provision of a layered body S1 comprising a substrate and an electrically conductive layer which is applied to the substrate and comprises an electrically conductive polymer P1; ii. partial covering of a part of the electrically conductive layer with a covering layer D, comprising a polymer P2 contained therein, from a covering phase to obtain at least one covered region D.sub.d and at least one non-covered region D.sub.u of the electrically conductive layer; iii. reduction of the electrical conductivity of the electrically conductive layer in at least a part of the at least one non-covered region D.sub.u compared with the electrical conductivity of the electrically conductive layer in the at least one covered region D.sub.d; iv. at least partial removal of the covering layer D by an alkaline aqueous treatment.

A method of fabricating a display device may include forming a preliminary first pixel definition layer by coating a first material on a base substrate including a first electrode, forming a first pixel definition layer by forming a first opening in the preliminary first pixel definition layer, the first opening exposing the first electrode, performing a plasma treatment on the first pixel definition layer, forming a preliminary organic layer by providing a first organic material, forming a preliminary second pixel definition layer by coating a second material on the first pixel definition layer, forming a second pixel definition layer by forming a second opening in the preliminary second pixel definition layer, the second opening overlapping with the first opening, and forming an organic layer by providing a second organic material. A thickness of the organic layer may be greater than a thickness of the preliminary organic layer.

There provide an organic light emitting diode substrate and preparation method thereof and a display panel. The preparation method includes: forming a pixel defining layer which defines a pixel region and has a via hole on a base; forming an auxiliary electrode in the via hole; forming a capsule structure encapsulating a conductive liquid on the auxiliary electrode; expanding the capsule structure to be broken so as to enable the conductive liquid to form a connection electrode; and forming a first electrode covering the base, the first electrode being connected to the auxiliary electrode through the connection electrode. In the present disclosure, the connection electrode is formed through the capsule structure encapsulating the conductive liquid, so that the first electrode is connected to the auxiliary electrode through the connection electrode. The preparation process is simpler and the production cost is lower.

The present technology relates to a semiconductor device, a solid-state imaging device, an electronic apparatus, and a manufacturing method of the semiconductor device which can suppress generation of residual carriers within an organic film. The semiconductor device includes: a first electrode; a second electrode; and an organic film that is disposed between the first electrode and the second electrode. At least one of the first electrode and the second electrode is discontinuous. The organic film includes an inter-electrode region, which is a region interposed between the first electrode and the second electrode, and a non-inter-electrode region, which is a region not interposed between the first electrode and the second electrode, and the non-inter-electrode region is disposed between the adjacent inter-electrode regions. A suppression region, which is a region in which at least one of generation and movement of a carrier is suppressed, is present within the non-inter-electrode region.

There provide an organic light emitting diode substrate and preparation method thereof and a display panel. The preparation method includes: forming a pixel defining layer which defines a pixel region and has a via hole on a base; forming an auxiliary electrode in the via hole; forming a capsule structure encapsulating a conductive liquid on the auxiliary electrode; expanding the capsule structure to be broken so as to enable the conductive liquid to form a connection electrode; and forming a first electrode covering the base, the first electrode being connected to the auxiliary electrode through the connection electrode. In the present disclosure, the connection electrode is formed through the capsule structure encapsulating the conductive liquid, so that the first electrode is connected to the auxiliary electrode through the connection electrode. The preparation process is simpler and the production cost is lower.

An OLED is provided that includes a substrate; and an anode, a P-type organic semiconductor layer, an N-type organic semiconductor layer, and a cathode that are successively laminated on the substrate. An interface between the P-type organic semiconductor layer and the N-type organic semiconductor layer is a curved surface structure.

A method of manufacturing an organic EL display device according to an embodiment of the present invention includes: forming a plurality of lower electrodes respectively corresponding to a plurality of pixels on a substrate; forming a plurality of banks, which partition the pixels, between adjacent lower electrodes on the substrate; forming an organic material layer on the lower electrodes and the banks; and selectively irradiating the organic material layer on the banks with an energy ray from a direction of a surface of the organic material layer opposite to a surface of the organic material layer in contact with the banks.