Samsung Electronics Co., Ltd.

Keigo Furuta

Fumiaki Kato

Takahiro Fujiyama

Masashi Tsuji

Yusaku Konishi

Takao Motoyama

Eun Joo Jang

Tae Ho Kim

Hyo Sook Jang

Dae Young Chung

Yuho Won

Ha Il Kwon

Tomoyuki Kikuchi

Hiroko Endo

Kiyohiko Tsutsumi

Won Sik Yoon

Jaejun Chang

Mitsunori Ito

Jun-Mo Yoo

Yukika Yamada

Naotoshi Suganuma

Soonmin Cha

Provided is a compound represented by Chemical Formula 1 capable of manufacturing an EL device by inkjet printing. In Chemical Formula 1,

Compounds, liquid compositions including compounds, and electroluminescent devices

A quantum dot ink composition including a plurality of quantum dots, and a mixed solvent including a Solvent a and a Solvent b, the ink composition having a surface tension of about 30 mN/m to about 40 mN/m, where Solvent a is a cycloalkane compound with at least one ring carbon having a linear C4 to C16 alkyl group, and Solvent b is an aromatic hydrocarbon compound having a linear C2 to C12 alkyl group. A quantum dot electroluminescent device including a light emitting layer formed from the quantum dot composition.

Quantum dot ink composition, and quantum dot electroluminescent device

A device having design film thicknesses, to suppress non-uniformity of a light emitting surface, to provide a quantum dot electroluminescence device with good luminous efficiency and light emitting life-span, and to provide an excellent quantum dot electroluminescence device with luminous efficiency and light emitting life-span. A quantum dot electroluminescence device including a hole transport layer, an electron transport layer, and a light emitting layer disposed between the hole transport layer and the electron transport layer, wherein the hole transport layer includes a polymer material and a low molecular material, the light emitting layer includes a quantum dot having a core-shell structure, and a residual film ratio of the hole transport layer is greater than or equal to about 95%.

Quantum dot electroluminescence device

An arylamine-fluorene alternating copolymer having a structural unit (A) is represented by Chemical Formula (1): wherein Chemical Formula (1) is the same as described in the detailed description.

Arylamine-fluorene alternating copolymer, electroluminescence device material, and electroluminescence device using the polymer

A copolymer having a structural unit represented by Chemical Formula 1 is provided. The copolymer may improve performance, e.g., luminous efficiency, of an electroluminescence device. In Chemical Formula 1, the definition of each substituent is as described in the detailed description.

Copolymer, electroluminescence device material including copolymer, and electroluminescence device

A polymer material includes a segment of an alternating copolymer of a structural unit of a specific structure and has a glass transition temperature of greater than or equal to about 50&#xb0; C. and less than or equal to about 250&#xb0; C. The polymer material is capable of improving luminescence life-span of an electroluminescence device, particularly a quantum dot light emitting device.

Polymer material, material for electroluminescence device, liquid composition, thin film, and electroluminescence device

An electroluminescent device with an improved luminous efficiency. The device includes a light emitting layer with an arylamine polymer including a structural unit (A) represented by Chemical Formula (1). 

Arylamine polymer including silicone, and electroluminescence device material and electroluminescence device using the polymer

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Yokohama, Japan

Keigo Furuta