Abstract: A method includes providing a substrate, forming a patterned hard mask layer over the substrate, etching the patterned hard mask layer to form a hole that penetrates the patterned hard mask layer, forming a barrier portion in the hole, removing the patterned hard mask layer, and forming a gate structure over the substrate. Formation of the gate structure includes forming a dielectric body portion on the substrate. The barrier portion that is thicker than the dielectric body portion adjoins one end of the dielectric body portion. The dielectric body portion and the barrier portion are collectively referred to as a gate dielectric layer. Formation of the gate structure further includes forming a gate electrode on the gate dielectric layer and forming gate spacers on opposite sidewalls of the gate electrode. During formation of the gate spacers, a portion of the barrier portion is removed to form a recessed corner.

Abstract: A 3D positioning system and method, adapted for object tracking and positioning of virtual reality is provided. The method comprises: tracking a characteristic of at least a light-emitting component at a controller; calculating relative displacement information between each of the controller and a headset display device according to the characteristic; detecting first displacement information of the headset display device and second displacement information of each of the controller; transmitting the relative displacement information, the first displacement information, and the second displacement information to the host; and adjusting a corresponding virtual image of the virtual reality according to the relative displacement information, the first displacement information, and the second displacement information and transmitting the adjusted virtual image to the headset display device to display via the host.