Abstract: A latch sensor for a pod transport gripper for transferring semiconductor wafers is disclosed. The transport gripper has a left bar and a right bar, as well as a cross bar connecting the left and the right bars. The gripper also has a left clamp and a right clamp disposed on interior sides of the left bar and the right bar, respectively, to clamp a pod, such as a front-opening unified pod (FOUP), for transport. A number of latches are disposed on the cross bar, and correspond to a number of latch holes of the pod. The gripper has at least one latch sensor disposed on either the left bar, the right bar, or both, to determine whether the latches have properly engaged the latch holes of the pod.

Abstract: A latch sensor for a pod transport gripper for transferring semiconductor wafers is disclosed. The transport gripper has a left bar and a right bar, as well as a cross bar connecting the left and the right bars. The gripper also has a left clamp and a right clamp disposed on interior sides of the left bar and the right bar, respectively, to clamp a pod, such as a front-opening unified pod (FOUP), for transport. A number of latches are disposed on the cross bar, and correspond to a number of latch holes of the pod. The gripper has at least one latch sensor disposed on either the left bar, the right bar, or both, to determine whether the latches have properly engaged the latch holes of the pod.