Abstract:
Semiconductor devices including STI liners are provided. The semiconductor devices may include a STI trench that defines an active region in a substrate, a STI liner that extends conformally along side walls and a bottom surface of the STI trench, a device isolation film that is on the STI liner and fills up at least a part of the STI trench, a first gate structure that is disposed on the active region, and a second gate structure that is spaced apart from the first gate structure. The second gate structure may include a gate insulating film contacting the device isolation film, a gate electrode on the gate insulating film, and spacers on both sides of the gate electrode. Lower surfaces of the spacers may contact an upper surface of the STI liner.
Abstract:
A method of fabricating a gate includes sequentially forming an insulation layer and a conductive layer on substantially an entire surface of a substrate. The substrate has a device isolation layer therein and a top surface of the device isolation layer is higher than a top surface of the substrate. The method includes planarizing a top surface of the conductive layer and forming a gate electrode by patterning the insulation layer and the conductive layer.