An organic EL element including an anode, a first functional layer including organic material, disposed above the anode, a second functional layer including organic material, disposed on and in contact with the first functional layer, a light emitting layer disposed on and in contact with the second functional layer, and a cathode disposed above the light emitting layer. A highest occupied molecular orbital (HOMO) level of the organic material of the second functional layer has an energy level at least 0.2 eV lower than that of a HOMO level of the organic material of the first functional layer, and film thickness of the second functional layer is 15 nm or less.

The present invention provides compositions comprising a metal oxide electrode, a passivating agent on its surface, and a hybrid organic-inorganic perovskite active layer in contact with the metal oxide electrode surface. The presence of a passivating agent on the metal oxide surface increases stability and/or photovoltaic power conversion efficiency of the electronic component comprising a composition of the invention.

A display panel includes a first display region and a second display region, and the second display region includes a transparent display region and a transition display region. Pixel circuits corresponding to light-emitting units of the transparent display region and the transition display region are located in the transition display region, and the pixel circuits located in the transition display region includes a first drive transistor. Along a direction perpendicular to the substrate, an overlapping region is located between the gate transmission structures and a lower electrode disposed on a side, close to the substrate, of a light-emitting unit of the transition display region located above the respective gate transmission structure, a shielding layer connected to a fixed potential is disposed in at least part of the overlapping region to shield from parasitic capacitance between the lower electrode and the gate transmission structure.

A light-emitting element includes a pixel electrode arranged on an inorganic insulating film having an uneven structure on a first surface, and having a first electrode and a second electrode having an uneven structure finer than the uneven structure on a third surface, an electron injection layer arranged on the second electrode, an electron transport layer arranged on the electron injection layer, a light-emitting layer arranged on the electron transport layer and a common electrode arranged on the light-emitting layer.

The present disclosure provides an array substrate including a driving circuit board, and a first electrode layer, an insulating layer, and an anode structure sequentially stacked thereon. The anode structure includes a reflective layer, an intermediate dielectric layer, and a transparent conductive layer sequentially provided in a direction away from the driving circuit board. The array substrate has first, second, and third pixel regions. The anode structure includes first, second, and third anode structures. The first electrode layer includes first, second and third sub-portions. The first, second and third anode structures are coupled with the first, second and third sub-portions through first, second and third via holes in the insulating layer, respectively. A surface of the insulating layer in contact with the first, second and third anode structures is flush; and a thickness of the intermediate dielectric layer in the second, first and third anode structures increases sequentially.

A light-emitting device includes: a first electrode; a second electrode; an interlayer between the first electrode and the second electrode and including an emission layer; a hole transport region between the first electrode and the emission layer; and an electron transport region between the second electrode and the emission layer, wherein the first electrode is a multi-layered electrode including: a first layer including a first material, a second layer disposed on the first layer and including a second material, and a third layer between the second layer and the hole transport region and including a third material, wherein a first surface of the third layer contacts the second layer, and a second surface of the third layer facing the first surface directly contacts the hole transport region, and the third material has a work function of greater than about 4.8 eV and less than or equal to about 6.8 eV.

An organic electroluminescence device, which includes a transparent conductive layer, a light emitting unit layer, transparent insulator dielectric layer and an electrode layer which are stacked up layer by layer sequentially. The light emitting unit layer includes a first light emitting unit and a second light emitting unit which are arranged in juxtaposition and with an interval; through arranging the first light emitting unit and the second light emitting unit in juxtaposition and with an interval, making the organic electroluminescence device can be directly connected to external alternating current, not only can dispense from the energy dissipation causing by converting alternating current to direct current, but also can improve the luminous efficacy of the device; and makes the whole organic electroluminescence device be thin and light.

An organic light emitting diode (OLED) display includes an OLED panel and an electroconductive (EC) filter. The OLED panel provides an image. The EC filter permits the image to be viewed within a first viewing angle in response to a first voltage applied to the EC filter, and permits the image to be viewed exclusively within a second viewing angle in response to a second voltage applied to the EC filter.

A light-emitting element includes: a cathode; an anode; an EML provided between the cathode and the anode; and an ETL provided between the cathode and the EML. The ETL contains, on an interface at least to the EML, metal oxide nano particles and a polymer chemically bonding to a surface of the metal oxide nano particles. The polymer contains a main chain of a polysiloxane bond and a side chain of an organic group.

The invention relates to a light extraction substrate having a light extraction layer. The light extraction layer includes boron, boroate, and/or borosilicate as well as nanoparticles.