Abstract: A high electron mobility transistor includes a substrate including a first surface and a second surface facing each other and having a via hole passing through the first surface and the second surface, an active layer on the first surface, a cap layer on the active layer and including a gate recess region exposing a portion of the active layer, a source electrode and a drain electrode on one of the cap layer and the active layer, an insulating layer on the source electrode and the drain electrode and having on opening corresponding to the gate recess region to expose the gate recess region, a first field electrode on the insulating layer, a gate electrode electrically connected to the first field electrode on the insulating layer, and a second field electrode on the second surface and contacting the active layer through the via hole.

Abstract: The present invention relates to a high reliability field effect power device and a manufacturing method thereof. A method of manufacturing a field effect power device includes sequentially forming a transfer layer, a buffer layer, a barrier layer and a passivation layer on a substrate, patterning the passivation layer by etching a first region of the passivation layer, and forming at least one electrode on the first region of the barrier layer exposed by patterning the passivation layer, wherein the first region is provided to form the at least one electrode, and the passivation layer may include a material having a wider bandgap than the barrier layer to prevent a trapping effect and a leakage current of the field effect power device.

Abstract: The present invention relates to a highly scratch resistant one-part clear coating composition comprising a silane-modified blocked isocyanate for cars, in which a blocked isocyanate curing system comprising a silane functional group is applied besides an acrylic melamine-curing system used as a clear coat system for new cars unlike an acrylic-melamine curing clear coat used as a general clear coat for cars such that the formation of scratches on the surface of a car occurring during the automatic or manual car wash is minimized to maintain initial gloss for as long as possible, thereby maintaining the intrinsic color of the car as well as increasing a degree of consumer's satisfaction with the outer appearance of the car.

Abstract: The present invention concerns the dynamics and yielding of transient solutions for the film-blowing process. After solving the governing equations that takes into consideration the viscoelasticity and cooling characteristics of the film, a coordinate transformation was done to change the free-end-point problem into a fixed-end-point one. Then finally, by introducing Newton's method along with OCFE (Orthogonal Collocation on Finite Elements), a transient solution for the process was obtained.