Semiconductor Energy Laboratory Co., Ltd.

Noriko Shibata

Shunpei Yamazaki

Yasuyuki Arai

Toru Takayama

Junya Maruyama

Yuugo Goto

Yumiko Ohno

Jun Koyama

Hirokazu Yamagata

Yoshimi Adachi

Yasuo Nakamura

Satoshi Seo

Hideaki Kuwabara

Osamu Nakamura

Ikuko Kawamata

Yukie Suzuki

Yoshitaka Moriya

Kiyofumi Ogino

Masaaki Hiroki

Takeshi Nishi

The present invention intends to realize a narrow flame of a system on panel. In addition to this, a system mounted on a panel is intended to make higher and more versatile in the functionality. In the invention, on a panel on which a pixel portion (including a liquid crystal element, a light-emitting element) and a driving circuit are formed, integrated circuits that have so far constituted an external circuit are laminated and formed. Specifically, of the pixel portion and the driving circuit on the panel, on a position that overlaps with the driving circuit, any one kind or a plurality of kinds of the integrated circuits is formed by laminating according to a transcription technique.

Semiconductor device

A method of manufacturing a light emitting device is provided in which satisfactory image display can be performed by the investigation and repair of short circuits in defect portions of light emitting elements. A backward direction electric current flows in the defect portions if a reverse bias voltage is applied to the light emitting elements having the defect portions. Emission of light which occurred from the backward direction electric current flow is measured by using an emission microscope, specifying the position of the defect portions, and short circuit locations can be repaired by irradiating a laser to the defect portions, turning them into insulators.

Method of manufacturing a light emitting device and thin film forming apparatus

To reduce the thickness of a lighting device which uses an electroluminescent material and to simplify the structure of a lighting device which uses an electroluminescent material, in the lighting device of the present invention: a terminal electrically connecting a light-emitting element included in the lighting device to the outside is formed over the same surface of a substrate as the light-emitting element; and the terminal is formed at the center of the substrate while the light-emitting element is stacked. In addition, the lighting device has a structure in which the light-emitting element is not easily deteriorated.

Lighting device with a connection structure and connecting member

A display system in which the luminance of light-emitting elements in a light-emitting device is adjusted based on information on an environment. A sensor obtains information on an environment as an electrical signal. A CPU converts, based on comparison data set in advance, the information signal into a correction signal for correcting the luminance of EL elements. Upon receiving this correction signal, a voltage changer applies a predetermined corrected potential to the EL elements. Thus, this display system enables control of the luminance of the EL elements.

Display system and electrical appliance

Lighting device

The present invention intends to realize a narrow frame of a system on panel. In addition to this, a system mounted on a panel is intended to make higher and more versatile in the functionality. In the invention, on a panel on which a pixel portion (including a liquid crystal element, a light-emitting element) and a driving circuit are formed, integrated circuits that have so far constituted an external circuit are laminated and formed. Specifically, of the pixel portion and the driving circuit on the panel, on a position that overlaps with the driving circuit, any one kind or a plurality of kinds of the integrated circuits is formed by laminating according to a transcription technique.

An active matrix light emitting device of which luminance characteristic does not vary among light emitting elements of respective pixels, and which can be realized even in a high definition display panel is disclosed. In the light emitting device, a light emitting material is interposed between a first electrode and a second electrode electrically connected to an auxiliary wiring, not only in a peripheral portion but also in a pixel portion. A layer containing the light emitting material comprises a first buffer layer, a light emitting layer, and a second buffer layer. In the pixel portion, either one or both of the first and the second buffer layer are interposed between the auxiliary wiring and the second electrode where the second electrode and the auxiliary wiring are electrically connected.

Light emitting device and manufacturing method thereof

Growing community of inventors

Kanagawa, Japan

Noriko Shibata