Semiconductor Energy Laboratory Co., Ltd.

Mitusaki Osame

Shunpei Yamazaki

Satoshi Seo

Yoshifumi Tanada

Aya Anzai

Keisuke Miyagawa

A light emitting device that achieves long life, and which is capable of performing high duty drive, by suppressing initial light emitting element deterioration is provided. Reverse bias application to an EL element () is performed one row at a time by forming a reverse bias electric power source line () and a reverse bias TFT (). Reverse bias application can therefore be performed in synchronous with operations for write-in of an image signal, light emission, erasure, and the like. Reverse bias application therefore becomes possible while maintaining a duty equivalent to that of a conventional driving method.

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Kanagawa, Japan

Mitusaki Osame