A method is performed by a device in a wireless network. The method includes supplying scan signals to odd scan lines in a writing period of an odd frame set to be in a non-emission state, and supplying scan signals to even scan lines in a writing period of an even frame set to be in the non-emission state. The lowest layer of the lower electrode is formed with TiN which serves as a barrier against the diffusion of impurities from a lower substrate.