Semiconductor Energy Laboratory Co., Ltd.

Masakazu Egawa

Sachiko Kawakami

Satoshi Seo

Nobuharu Ohsawa

Ryoji Nomura

Harue Nakashima

Harue Osaka

Tsunenori Suzuki

Hideko Inoue

Kumi Kojima

Satoko Shitagaki

Atsushi Tokuda

Hiroko Murata

Sachiko Semiconductor Energy Lab Co Ltd Kawakami

Nobuharu Semiconductor Energy Lab Co Ltd Ohsawa

Tsunenori c/o Semiconductor Energy Co Ltd Suzuki

Sachiko c/o Semiconductor Energy Laboratory Co Ltd Kawakami

Harue c/o Semiconductor Energy Laboratory Co Ltd Osaka

Ryoji c/o Semiconductor Energy Laboratory Co Ltd Nomura

Ryoji Semiconductor Energy Lab Co Ltd Nomura

Kumi Semiconductor Energy Lab Co Ltd Kojima

Harue Semiconductor Energy Lab Co Ltd Nakashima

An object is to provide a novel anthracene derivative. Another object is to provide a light-emitting element with high luminous efficiency. Yet another object is to provide a light-emitting element with a long lifetime. Still another object is to provide a light-emitting device and an electronic device having a long lifetime by using the light-emitting elements of the present invention. The anthracene derivative represented by General Formula (1) is provided. The ability of the anthracene derivative represented by General Formula (1) to exhibit high luminous efficiency allows the production of a light-emitting element with high luminous efficiency and a long lifetime.

Anthracene derivative, and light-emitting element, light-emitting device, electronic device using anthracene derivative

It is an object of the present invention to provide an organometallic complex that can emit phosphorescence. In the following general formula (G1), X represents &#x2014;O&#x2014; or &#x2014;N(R)&#x2014;. Rto Reach represent any of hydrogen, an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkoxycarbonyl group having 1 to 6 carbon atoms, an acyl group having 1 to 6 carbon atoms, an acyloxy group having 1 to 6 carbon atoms, a halogen group, a haloalkyl group, and an aryl group having 6 to 12 carbon atoms. In addition, Rrepresents any of an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, an acyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a heteroaryl group having 4 to 10 carbon atoms. Moreover, M represents an element belonging to Group 9 or 10. 

Organometallic complex, and light-emitting element and light-emitting device using the same

To provide a new bipolar organic compound. In particular, to provide a bipolar organic compound having excellent heat resistance and to provide a bipolar organic compound which is electrochemically stable. Further, to provide a light emitting element and a light emitting device of which a driving voltage and power consumption are reduced by using a new bipolar organic compound. Further, to provide a light emitting element and a light emitting device which have excellent heat resistance by using a new bipolar organic compound. Further, to provide a light emitting element and a light emitting device which have a long life by using a new bipolar organic compound.

Quinoxaline derivative, and light emitting element, light emitting device, and electronic device using the quinoxaline derivative

It is an object to provide a novel material having a bipolar property, a light emitting element provided with the novel material, and a display device that includes the light emitting element. It is an object to provide a pyrazine derivative represented by the following general formula (g-1). 

Pyrazine derivative, and light emitting element, display device, electronic device using the pyrazine derivative

A novel stilbene derivative is provided with motivation of providing a blue emissive material showing excellent color purity. The use of the stilbene derivative of the present invention allows the fabrication of a blue-emissive light-emitting element with excellent color purity. The invention also includes an electronic device equipped with a display portion in which the stilbene derivative is employed. The stilbene derivative of the present invention is represented by formula (1), in which Arand Armay form a 5-membered ring by being directly bonded to each other. In formula (1), Arepresents any one of substituents represented by general formulas (1-1) to (1-3). The variables shown in formula (1) and (1-1) to (1-3) are as defined in the specification. 

Stilbene derivatives, light-emitting element, display device, and electronic device

The present invention provides a novel organic compound having excellent heat resistance. By using the novel organic compound, a light-emitting element and a light-emitting device which have excellent heat resistance can be provided. A stilbene derivative expressed by the general formula (1) is provided. Since the stilbene derivative expressed by the general formula (1) has high glass transition point, when it is used for a light-emitting element, the light-emitting element, and a light-emitting device using the light-emitting element which have excellent heat resistance can be obtained. Further, since the stilbene derivative expressed by the general formula (1) has good light emission efficiency; therefore, when it is used for a light emitting element, a light emitting element and a light emitting device which consumes less power can be obtained. 

Stilbene derivative, light-emitting element, light-emitting device, and electronic device

The present invention provides a novel substance having an excellent color purity of blue, a light-emitting element and a light-emitting device using the novel substance. A stilbene derivative has a structure shown by the general formula (1). In the general formula (1), Ris hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms. Ris an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 25 carbon atoms. Each of Rto Ris hydrogen or an alkyl group having 1 to 4 carbon atoms. Aris an aryl group having 6 to 25 carbon atoms.

Stilbene derivatives, light-emitting element and light-emitting device

A quinoxaline derivative expressed by the general formula (1) is provided. (Each of Rto Rrepresents one of a hydrogen atom, a halogen atom, an alkyl group, an alkoxyl group, an acyl group, a dialkyl amino group, a diarylamino group, a substituted or unsubstituted vinyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocycle group. Arrepresents one of a substituted or unsubstituted biphenyl group and a substituted or unsubstituted terphenyl group, and Arrepresents one of a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, and a substituted or unsubstituted monocyclic heterocycle group.) 

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Tochigi, Japan

Masakazu Egawa