Disclosed are an electrode for a fluorescence organic light-emitting diode including a magnetic material and a fluorescence organic light-emitting diode including the electrode.

The electrode for the fluorescence organic light-emitting diode according to an embodiment of the present disclosure may include a first paramagnetic material layer formed on an organic layer; a ferromagnetic material layer formed on the first paramagnetic material layer; and a second paramagnetic material layer formed on the ferromagnetic material layer.

An organic light-emitting device (100) comprising an anode (103); a cathode (109); a light-emitting layer (107) between the anode and the cathode; a first hole-transporting layer (105A) comprising a first conjugated hole-transporting polymer between the anode and the light-emitting layer; and a second hole-transporting layer (105B) comprising a second conjugated hole-transporting polymer between the first hole-transporting layer and the light-emitting layer, wherein a lowest excited state energy level of the first hole-transporting polymer is lower than the lowest excited state energy of the second hole-transporting polymer.

An organic light-emitting device (100) comprising an anode (103); a cathode (109); a first light-emitting layer (107) comprising a first light-emitting material between the anode and the cathode; and a hole-transporting layer (105) comprising a hole-transporting polymer between the anode and the first light-emitting layer and adjacent to the first light-emitting layer, wherein a HOMO level of the first light-emitting material is closer to vacuum than a HOMO level of the hole-transporting polymer and wherein more than 50 mol % of the repeat units of the hole-transporting polymer are hole-transporting repeat units.

The present invention provides an organic thin film light emitting device having high luminous efficiency and durable life realized by using a benzindolocarbazole derivative as represented by either general formula (1-1) or (1-2) given below: [Chemical compound 1] wherein R.sup.1 to R.sup.24 may be identical to or different from each other and are selected from the group consisting of a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group, amino group, alkenyl group, cycloalkenyl group, alkynyl group, alkoxy group, alkylthio group, aryl ether group, aryl thioether group, aryl group, heteroaryl group, halogen atom, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, silyl group, and —P(═O)R.sup.25R.sup.26; R.sup.25 and R.sup.26 represent either an aryl group or a heteroaryl group; R.sup.25 and R.sup.26 may be condensed to form a ring; L.sup.1 to L.sup.4 independently represent a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group; and A.sup.1 to A.sup.4 independently represent an amino group, aryl group, heterocyclic group, or heteroaryl group.

There is provided a metal foil suitable for an electrode substrate for an electronic element, which makes it possible to suppress oxidation of the ultra-smooth surface and also prevent roll scratches when wound in a roll. The metal foil of the present invention is made of copper or copper alloy. The front surface of the metal foil has an ultra-smooth surface profile having an arithmetic mean roughness Ra of 30 nm or less as determined in accordance with JIS B 0601-2001. The back surface of the metal has a concave-dominant surface profile having a Pv/Pp ratio of 1.5 or more, the Pv/Pp ratio being a ratio of a maximum profile valley depth Pv to a maximum profile peak height Pp of a profile curve as determined in a rectangular area of 181 μm by 136 μm in accordance with JIS B 0601-2001.

Embodiments of the present disclosure disclose an organic light-emitting display panel and an organic light-emitting display device. The organic light-emitting display panel includes: a substrate; a first electrode and a second electrode that are stacked, wherein the first electrode and the second electrode are both located on the same side of the substrate; an organic light-emitting layer, which is located between the first electrode and the second electrode; an electron transport layer, which is located between the organic light-emitting layer and the second electrode; wherein, a rare earth transitional metal is also contained at any location between the surface of the second electrode away from the organic light-emitting layer and the surface of the electron transport layer near to the organic light-emitting layer.

An organic light-emitting diode (OLED) display panel and an OLED display apparatus are provided. The OLED display panel comprises: a substrate; a first electrode and a second electrode disposed in a stacked configuration and on a same side of the substrate; an organic luminescent layer disposed between the first electrode and the second electrode; and an electron transport layer, disposed between the organic luminescent layer and the second electrode and including a predetermined volume percentage of element ytterbium (Yb).

A first electrode having light transmissivity is formed on a first surface of a first light transmissive substrate and. An organic functional layer includes a light-emitting layer and is located on an opposite side to the first light transmissive substrate with the first electrode interposed therebetween. A second electrode is located on an opposite side to the first electrode with the organic functional layer interposed therebetween. A second surface which is a surface of the first light transmissive substrate on an opposite side to the above-mentioned first surface is fixed to the second light transmissive substrate, which has a bending rigidity higher than that of the first light transmissive substrate. First irregularities are formed in the second surface of the first light transmissive substrate, and second irregularities are formed in a surface of the second light transmissive substrate which faces the first light transmissive substrate.

An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a thin film transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode. A first insulating layer is formed at least between the active layer and the gate electrode and a second insulating layer formed at least between the gate, source, and drain electrodes. The OLED display also includes a third insulating layer covering the source and drain electrodes and a pixel electrode including a first portion formed in first and second openings respectively defined in the second and third insulating layers and a second portion formed outside of the second opening. A pixel defining layer is formed over the second portion of the pixel electrode and the third insulating layer and has a third opening. The third opening has an area greater than that of the second opening.

An organic light emitting diode display includes a substrate, a transistor on the substrate, a reflecting electrode connected to the transistor, a color filter on the reflecting electrode, a first electrode on the color filter and electrically connected to the reflecting electrode, a pixel definition layer on the color filter and having an opening exposing the first electrode, a white emission layer in the opening and a second electrode on the white emission layer.