Abstract: A semiconductor device includes channel layers on a substrate, the channel layers being spaced apart from each other, and having first side surfaces and second side surfaces opposing each other in a first direction, a gate electrode surrounding the channel layers and having a first end portion and a second end portion, opposing each other in the first direction, and a source/drain layer on a first side of the gate electrode and in contact with the channel layers, a portion of the source/drain layer protruding further than the first end portion of the gate electrode in the first direction, wherein a first distance from the first end portion of the gate electrode to the first side surfaces of the channel layers is shorter than a second distance from the second end portion of the gate electrode to the second side surfaces of the channel layers.

Abstract: A substrate transfer device includes: a traveling unit including a traveling wheel that travels on a rail to transfer a substrate in a first direction; a rail unit including the rail and a rail protrusion protruding from the rail in a second direction different from the first direction; and a sensor unit including a first sensor and a second sensor, wherein the first sensor senses the traveling unit, and the second sensor senses the rail protrusion, wherein the first and second sensors are placed at the same position as each other along the rail on a basis of the first direction.

Abstract: A wireless communication terminal includes a terminal body having an arrangement portion, a connector unit hinge-connected to the terminal body and able to be accommodated in and taken out of the arrangement portion, a cover unit to move on the terminal body to cover and uncover the arrangement portion, and a guide unit to hold the cover unit in an open position, and to guide the cover unit into a closed position in conjunction with a movement of the connector unit. The cover unit includes an embedded intenna, and the connector unit includes a Universal Serial Bus (USB) connector to provide a wireless communication function.

Abstract: A wireless communication terminal includes a terminal body having an arrangement portion, a connector unit hinge-connected to the terminal body and able to be accommodated in and taken out of the arrangement portion, a cover unit to move on the terminal body to cover and uncover the arrangement portion, and a guide unit to hold the cover unit in an open position, and to guide the cover unit into a closed position in conjunction with a movement of the connector unit. The cover unit includes an embedded intenna, and the connector unit includes a Universal Serial Bus (USB) connector to provide a wireless communication function.