Abstract: The impurity concentration in the oxide semiconductor film is reduced, and a highly reliability can be obtained.

Abstract: There have been cases where transistors formed using oxide semiconductors are inferior in reliability to transistors formed using amorphous silicon. Thus, in the present invention, a semiconductor device including a highly reliable transistor formed using an oxide semiconductor is manufactured. An oxide semiconductor film is deposited by a sputtering method, using a sputtering target including an oxide semiconductor having crystallinity, and in which the direction of the c-axis of a crystal is parallel to a normal vector of the top surface of the oxide semiconductor. The target is formed by mixing raw materials so that its composition ratio can obtain a crystal structure.

Abstract: A lens driving device prevents its holder from tilting while driving the lens, and has a small number of components, low cost, and small size. The lens driving device includes a base, a holder, magnets, and magnetic plates. The base includes a projection having a hook-shaped cross section. The holder includes a rotation inhibitor which comes into contact with the projection of the base. The holder is supported to the base by one shaft. One magnetic plate is located further from the shaft than the center of the magnet is. The other magnetic plate is located closer to the shaft than the center of the magnet is. The magnetic forces generated between the magnetic plates and the magnets make the holder subjected to a torque on the shaft. The torque allows the rotation inhibitor to be slightly pressed against the projection.

Abstract: There is provided parallax correction means for correcting a parallax for each area calculated by parallax calculation means in accordance with the magnitude of a motion vector for the area detected by motion vector detection means in order to prevent the three-dimensional effect of a conversion video from greatly differing depending on an input video when the MTD method and the CID method are simultaneously used. When a depth estimate is converted into a parallax, the depth estimate is subjected to distance scale conversion in order to suppress the distortion of the conversion image, to find a tentative target phase for each parallax calculation area, and a dynamic range in which a phase difference between the parallax calculation areas is within a distortion allowable range is searched for and is subjected to distance scale conversion, to find a tentative target phase, which operations are repeated.