A photoelectric conversion element including a first electrode, a photoelectric conversion layer, and a second electrode, in this order, wherein the photoelectric conversion layer contains a quantum dot and an organic compound, satisfies formula (1), a predetermined carrier mobility, and a predetermined energy level, and reduces a residual image, E2>E1 formula (1). E1 (eV) is the energy at a short-wavelength edge in a wavelength region of light detected by the photoelectric conversion element. E2 (eV) is the band gap of the organic compound.

An organic light-emitting diode (OLED) display panel and a manufacturing method thereof are provided. The OLED display panel includes an array substrate and a cathode structure. The cathode structure includes a metal film layer. The metal film layer includes a first metal film layer and a second metal film layer. The first metal film layer is positioned within the first active area and the second metal film layer is positioned within the second active area. Different regions of the metal film layer in the cathode structure are adjusted to different thicknesses, so that different regions have different light transmittances, which is beneficial to increase screen-to-body ratio.

An imaging element includes a photoelectric conversion section including a first electrode 21, a photoelectric conversion layer 23A including an organic material, and a second electrode 22 that are stacked; an inorganic oxide semiconductor material layer 23B is formed between the first electrode 21 and the photoelectric conversion layer 23A; and an inorganic oxide semiconductor material included in the inorganic oxide semiconductor material layer 23B contains aluminum (Al) atoms, tin (Sn) atoms, zinc (Zn) atoms, and oxygen (O) atoms.

An imaging element of the present disclosure includes a photoelectric conversion section including a first electrode 21, a photoelectric conversion layer 23A including an organic material, and a second electrode 22 that are stacked; an inorganic semiconductor material layer 23B is formed between the first electrode 21 and the photoelectric conversion layer 23A; and a value ΔEN (=EN.sub.anion−EN.sub.cation) is less than 1.695, and preferably 1.624 or less, which results from subtracting an average value EN.sub.cation of electronegativities of cationic species included in the inorganic semiconductor material layer from an average value EN.sub.anion of electronegativities of anionic species included in the inorganic semiconductor material layer 23B.

This disclosure provides a perovskite light-emitting diode with an adjustable light field, including a glass layer, an anode, a hole transport layer, an emission layer, an electron transport layer and a cathode in sequence from top to bottom. The electron transport layer is provided with a periodic nano-grating structure.

A display substrate and a manufacturing method thereof are provided. The manufacturing method includes: providing a base substrate; and forming a luminescent element on the base substrate which includes sequentially forming of a first electrode, a luminescent material layer and a second electrode on the base substrate, and a microprism structure is formed on a light-emitting side of the luminescent material layer.

A method for producing a pixel of an OLED microscreen includes the steps of: a) providing a substrate having a structured first electrode; b) forming a dielectric layer on the structured first electrode; c) forming openings in the dielectric layer such that the structured first electrode has free areas, d) forming a spacer layer that is transparent and conductive, and includes: a first part extending over the dielectric layer, and a second part extending over the free areas; e) removing the first part of the spacer layer; f) forming a stack of organic light-emitting layers that is configured to emit a white light; and g) forming a second electrode on the stack; step d) being carried out such that the second part of the spacer layer has first, second and third thicknesses that are designed to allow, respectively, the transmission of red, green and blue light.

A display device includes: a circuit element layer comprising a transistor; a display element layer comprising a first electrode connected to the transistor, a second electrode facing the first electrode, an organic pattern between the first electrode and the second electrode, a pixel defining layer having an opening exposing the first electrode, an auxiliary electrode spaced apart from the opening to cover a portion of the pixel defining layer and connected to the second electrode, a first protection pattern covering the second electrode, and a second protection pattern covering the first protection pattern; and an encapsulation layer covering the display element layer, wherein the first protection pattern and the second protection pattern have stress in directions different from each other.

An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X.sub.1 to X.sub.3 are a nitrogen atom or CR.sub.1, and A is represented by a formula (2) below. In the formula (2), L.sub.1 is s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Y.sub.1 is an oxygen atom, a sulfur atom or the like, and one of X.sub.11 to X.sub.18 is a carbon atom bonded to L.sub.1 by a single bond and the rest of X.sub.11 to X.sub.18 are a nitrogen atom or CR.sub.13. ##STR00001##

There is provided imaging devices and methods of forming the same, including a stacked structure body including a first electrode, a light-receiving layer formed on the first electrode, and a second electrode formed on the light-receiving layer, where the second electrode comprises an amorphous oxide comprising at least one of zinc and tungsten, and where the second electrode is transparent and electrically conductive and has absorption characteristics of 20% or more at a wavelength of 300 nm.