Abstract: A method includes implanting impurities in a semiconductor substrate to form an etch stop region within the semiconductor substrate; forming a transistor structure on a front side of the semiconductor substrate; forming a front-side interconnect structure over the transistor structure; performing a thinning process on a back side of the semiconductor substrate to reduce a thickness of the semiconductor substrate, wherein the thinning process is slowed by the etch stop region; and forming a back-side interconnect structure over the back side of the semiconductor substrate.

Abstract: A physiological sensing system is provided. The physiological sensing system includes a wearable device and an electronic device. The wearable device senses a body temperature signal of a user, an audio signal of a respiratory tract of the user, a capacitance sensing signal of the respiratory tract and an activity status of the user to generate a sampled body temperature signal, a sampled audio signal, a sampled sensing capacitance value and a sampled activity status. The electronic device determines a physiological status of the user in response to variations in the sampled body temperature signal, the sampled audio signal, the sampled sensing capacitance value and the sampled activity status.

Abstract: In a touch assisting structure and its device, the touch assisting structure is integrated with a projected capacitive touch device to achieve the effect of telecommunicatively triggering an action by a touch control after any insulator or non-insulator is touched actively or passively, and the structure and device may be applied to any moving object or a robot with a touch function. The touch assisting structure includes a main body and an electrically conductive medium, and the main body is a flexible body in a solid state, and the solid main body produces a deformation after the solid main body is compressed by a force and resumes its original solid state after the force is released. The electrically conductive medium is uniformly distributed in the main body and has a conductivity greater than 0.5 S·m?1.