Electro-optical device

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode and a PLL synchronization timing generation circuit; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode and a PLL synchronization timing generation circuit;a back light device comprising a cathode tube; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode and a PLL synchronization timing generation circuit and a comparator circuit; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode and a PLL synchronization timing generation circuit and a comparator circuit;a back light device comprising a cathode tube; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode;a back light device comprising a cathode tube; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode and a comparator circuit; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.

A television set comprising:nan active matrix type liquid crystal display device comprising a thin film transistor electrically connected to a pixel electrode and a comparator circuit;a back light device comprising a cathode tube; anda tuner operationally connected to the active matrix type liquid crystal display device,wherein the thin film transistor has a channel region which comprises semi-amorphous silicon, andwherein the channel region contains oxygen and a concentration of the oxygen is 5×1021 cm−3 or less.