Seiko Epson Corporation

Universal Display Corporation

Masaki Ito

Shunichi Seki

Chuanjun Xia

Masahiro Uchida

Kwang-Ohk Cheon

Takuya Sonoyama

Shotaro Watanabe

Shuichi Takei

Ryuji Ishii

Michael Inbasekaran

Kwong-Ohk Cheon

A method of forming an organic layer by using a liquid composition comprising a small molecule organic semiconductor material mixed in a ketone solvent. The liquid composition is deposited on a surface to form the organic layer. The ketone solvent may be an aromatic ketone solvent, such as a tetralone solvent. The organic semiconductor material may be cross-linkable to provide a cross-linked organic layer. The method can be used to make organic electronic devices, such as organic light emitting devices. In another aspect, the liquid composition comprises a small molecule organic semiconductor material mixed in an aromatic ether solvent. Also, provided are liquid compositions which can be used to make organic layers.

Liquid compositions for inkjet printing of organic layers or other uses

There is provided a method of manufacturing an organic EL panel by using a mask that includes a blocking portion blocking incoming particles and a plurality of opening portions through which the incoming particles can pass. The method includes forming a first light emitting part corresponding to a first color on a substrate by using a first mask, forming a first electrode that is overlapped with the first light emitting part by using the first mask, forming a second light emitting part corresponding to a second color on the substrate next to the first light emitting part so as to cover at least a part of the first electrode by using a second mask, forming a third light emitting part corresponding to a third color on the substrate in a position for facing the second light emitting part with the first electrode interposed therebetween in the plan view so as to cover at least a part of the first electrode or the second light emitting part, by using a third mask, forming a second electrode in an area corresponding to the second light emitting part and the third light emitting part by using a fourth mask, and removing a material that is deposited on the first electrode and the second electrode by using the first electrode and the second electrode as a mask.

Method of manufacturing organic EL panel, organic EL panel, and electronic apparatus

An organic electroluminescence device includes a pair of electrodes; a hole injection layer and a luminescent layer disposed between the pair of electrodes; and a mixing-preventing layer disposed between the hole injection layer and the luminescent layer and preventing mixing of the material constituting the hole injection layer and the material constituting the luminescent layer.

Organic electroluminescence device and method of manufacturing organic electroluminescence device

There is provided a method of manufacturing an organic electroluminescence device including a plurality of light-emitting elements. The organic electroluminescence device includes a partition wall layer having a first partition wall layer with openings corresponding to the light-emitting elements and a second partition wall layer which is disposed on the first partition wall layer, the partition wall layer extends so as to follow the gap of the light-emitting elements, and has a groove on the top. The method of manufacturing includes forming the partition wall layer by forming the first partition wall layer and forming the second partition wall layer on the first partition wall layer such that the first partition wall layer is exposed at the bottom of the groove. The first partition wall layer is composed of an inorganic material, and the second partition wall layer is composed of an organic material.

Method of manufacturing an organic electroluminescence device using a liquid droplet ejection method

Growing community of inventors

Fujimi-cho, Japan

Masaki Ito