Joled Inc.

Masaki Aonuma

Takuya Satoh

Yoichiro Yashiro

Hiroshi Katagiri

Akira Takiguchi

A method of manufacturing an organic EL element having a pair of electrodes and an organic functional layer disposed therebetween, the pair of electrodes consisting of an upper electrode and a lower electrode, comprising: forming the upper electrode on the organic functional layer by a magnetron sputtering method with a film-forming power density no less than 4.5 W/cmand no greater than 9.0 W/cm.

Manufacturing method of organic EL element

The present invention provides an organic light-emitting element with improved chemical stability at the interface between the light-emitting layer and the electron transport layer, which maintains excellent, stable luminous efficiency for a long period. For this purpose, one aspect of the present invention is an organic EL element having a substrate, and a hole injection layer, a buffer layer, a light-emitting layer, a regulation layer, an electron transport layer and a cathode which are sequentially layered on one side of the substrate. The regulation layer is made of NaF, which is not chemically reactive with the light-emitting layer or the electron transport layer, and the electron transport layer is made of a CT complex using a host material and an n-type dopant, which are both organic materials.

Organic light-emitting element with regulation insulating layer and two-component electron transport layer and method of making

An organic electroluminescent element including: a lower electrode; an organic functional layer on the lower electrode; and an upper electrode on the organic functional layer, wherein profile of an upper surface of the upper electrode has a skewness of between &#x2212;0.5 and 0.7 inclusive.

Organic electroluminescent element and method for manufacturing organic electroluminescent element

A manufacturing method for an organic light-emitting element includes: a first step of forming a first electrode, and forming an organic layer including a light-emitting layer; a second step of forming a second electrode, and thereby forming an element structure including the first electrode, the organic layer, and the second electrode; and a third step of performing an aging process by applying electric power between the first electrode and the second electrode in the element structure. a duration of the application of electric power in the third step is determined as the time elapsed before a time point at which a rate of decrease in a luminance of the light-emitting layer is substantially equal to a rate of decrease in a luminance of the element structure.

Method for producing organic light-emitting element, method for aging organic light-emitting element, organic light-emitting element, organic light-emitting device, organic display panel, and organic display device

A method of forming an upper electrode in an organic electroluminescent element is provided. A first film made of a material for the upper electrode is formed on an organic functional layer by magnetron sputtering under a first condition. Thereafter, a second film made of the material for the upper electrode is formed on the first film by magnetron sputtering under a second condition different from the first condition. The second film has a lower film stress than the first film.

Method for manufacturing organic electroluminescent element with bi-layer cathode

An organic EL element is provided having a pair of electrodes and an organic functional layer disposed therebetween, the pair of electrodes consisting of an upper electrode and a lower electrode. In the pair of electrodes, the upper electrode includes a first layer and a second layer, the first layer being in contact with the organic functional layer and the second layer being in contact with the first layer. Additionally, the first layer has a higher membrane stress than the organic functional layer and the second layer. Furthermore, the first layer has a crystalline structure and the second layer has a non-crystalline structure.

Method of manufacturing organic EL element and organic EL element

An organic EL device including: a substrate; an anode disposed on the substrate; a functional layer disposed on the anode, the functional layer containing a light-emitting layer; an electron transport layer disposed on the functional layer, the electron transport layer containing organic compound-containing material; and a cathode disposed on the electron transport layer so as to be in contact with the electron transport layer, the cathode being light-transmissive. The electron transport layer has a relative permittivity of no less than 2 and no greater than 10 when supplied with an AC voltage having a frequency of 1 MHz.

Organic el device

A method of manufacturing an organic EL element includes: a first step of forming a lower electrode on a substrate; a second step of forming an organic functional layer on the lower electrode; and a third step of forming an upper electrode on the organic functional layer, wherein the third step includes: a first film-forming step of forming a thin film on the organic functional layer by magnetron sputtering, the thin film being formed of material of the upper electrode; and a second film-forming step of forming, after the first film-forming step, another thin film by a film-forming process different from the magnetron sputtering on the thin film formed in the first film-forming step, said another thin film being formed of the material of the upper electrode.

Growing community of inventors

Fukuoka, Japan

Masaki Aonuma