Abstract: The present disclosure provides a photomask and a method of forming a photomask, in which the photomask may obtain an optimized uniformity via a simplified process flow. The photomask includes a plurality of stair-like patterns parallel disposed with each other, wherein each of the stair-like patterns includes a plurality of first right angles at one side and a plurality of second right angle at another side opposite to the side, and each of the first right angles and each of the second right angles are not in a same vertical axis.

Abstract: The present disclosure provides a photomask and a method of forming a photomask, in which the photomask may obtain an optimized uniformity via a simplified process flow. The photomask includes a plurality of stair-like patterns parallel disposed with each other, wherein each of the stair-like patterns includes a plurality of first right angles at one side and a plurality of second right angle at another side opposite to the side, and each of the first right angles and each of the second right angles are not in a same vertical axis.

Abstract: The present disclosure provides a photomask and a method of forming a photomask, in which the photomask may obtain an optimized uniformity via a simplified process flow. The photomask includes a plurality of stair-like patterns parallel disposed with each other, wherein each of the stair-like patterns includes a plurality of first right angles at one side and a plurality of second right angle at another side opposite to the side, and each of the first right angles and each of the second right angles are not in a same vertical axis.

Abstract: A method for measuring periodic motion of an object includes the steps of: after receiving an axial acceleration and a radial acceleration, calculating a first included angle between a composite acceleration, which is a sum of the axial acceleration and the radial acceleration, and one of an axial direction and a radial direction, and a second included angle between the composite acceleration and the other one of the axial direction and the radial direction; and based on a magnitude relation between the second included angle and the first included angle, controlling a periodic motion counter to increment a motion counter value which is associated with a number of times the periodic motion of the object has occurred.

Abstract: A method for measuring periodic motion of an object includes the steps of: after receiving an axial acceleration and a radial acceleration, calculating a first included angle between a composite acceleration, which is a sum of the axial acceleration and the radial acceleration, and one of an axial direction and a radial direction, and a second included angle between the composite acceleration and the other one of the axial direction and the radial direction; and based on a magnitude relation between the second included angle and the first included angle, controlling a periodic motion counter to increment a motion counter value which is associated with a number of times the periodic motion of the object has occurred.