Tohoku Pioneer Corporation

Shozaburo Sakaguchi

Takayoshi Yoshida

In an active-drive type pixel structure comprising at least TFT for control, TFT for drive, and a capacitor for charge retention, it can be easily inspected whether the functions of TFTs and the capacitor are normal or not. In an active-drive type pixel structure comprising TFT (Tr) for control, TFT (Tr) for drive, and a capacitor for charge retention, one terminal of a dummy load W for inspection is connected to a drain of the TFT for drive, and the other terminal of the load W is connected to a linefor inspection. By measuring an electric current Id obtained on the linefor inspection while changing a voltage supplied to a data line, it can be inspected whether the functions of TFTs and the capacitor are normal or not. The dummy load W is configured to be melted and cut by burning off the load W with a laser beam or by passing a predetermined electric current in the load W after completion of inspection.

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Yonezawa, Japan

Shozaburo Sakaguchi