Abstract: A p-GaN high-electron-mobility transistor (HEMT) includes a buffer layer stacked on a substrate, a channel layer stacked on the buffer layer, a supply layer stacked on the channel layer, a doped layer stacked on the supply layer, and a hydrogen barrier layer covering the supply layer and the doped layer. A source and a drain are electrically connected to the channel layer and the supply layer, respectively. A gate is located on the doped layer. The hydrogen barrier layer is doped with fluorine.

Abstract: An electronic device has a narrow viewing angle state and a wide viewing angle state, and includes a panel and a light source providing a light passing through the panel. In the narrow viewing angle state, the light has a first relative light intensity and a second relative light intensity. The first relative light intensity is the strongest light intensity, the second relative light intensity is 50% of the strongest light intensity, the first relative light intensity corresponds to an angle of 0°, the second relative light intensity corresponds to a half-value angle, and the half-value angle is between ?15° and 15°. In the narrow angle state, a third relative light intensity at each angle between 20° and 60° or each angle between ?20° and ?60° is lower than 20% of the strongest light intensity.

Abstract: A semiconductor device includes a substrate. The semiconductor device includes a fin that is formed over the substrate and extends along a first direction. The semiconductor device includes a gate structure that straddles the fin and extends along a second direction perpendicular to the first direction. The semiconductor device includes a first source/drain structure coupled to a first end of the fin along the first direction. The gate structure includes a first portion protruding toward the first source/drain structure along the first direction. A tip edge of the first protruded portion is vertically above a bottom surface of the gate structure.

Abstract: An optical measuring device is configured to measure a light beam emitted from a light source. The optical measuring device includes a light collecting element, at least four light-sensing elements, a light splitting device, and at least one lens. The light collecting element is configured to collect the light beam. The light-sensing elements are configured to respectively sense the light fields of different light paths of the light beam. The respective distances of the light paths between the respective light-sensing elements and the light source are different from each other. The light splitting device is configured to split the light beam passing through the light collecting element and respectively guide the split light beams to the light sensing elements. The lens is disposed between at least one of the light-sensing elements and the light collecting element, and is configured to form images on the at least four light-sensing elements.

Abstract: An optical measuring device is configured to measure a light beam emitted from a light source. The optical measuring device includes a light collecting element, at least four light-sensing elements, a light splitting device, and at least one lens. The light collecting element is configured to collect the light beam. The light-sensing elements are configured to respectively sense the light fields of different light paths of the light beam. The respective distances of the light paths between the respective light-sensing elements and the light source are different from each other. The light splitting device is configured to split the light beam passing through the light collecting element and respectively guide the split light beams to the light sensing elements. The lens is disposed between at least one of the light-sensing elements and the light collecting element, and is configured to form images on the at least four light-sensing elements.

Abstract: A tool for clamping an optical glass element includes a first arm, a second arm, a first clamping portion and a second clamping portion. The first and second arms are pivotally connected with each other and are rotatable relative to each other about a first axis. The first clamping portion is rotatably connected to an end portion of the first arm distal from the first axis and is rotatable relative to the first arm about a second axis. The second axis is substantially perpendicular to the first axis. The second clamping portion is rotatably connected to an end portion of the second arm distal from the first axis and is rotatable relative to second arm about a third axis. The third axis is substantially perpendicular to the first axis. The first and second clamping portions are configured for cooperatively clamping the optical glass element therebetween.

Abstract: A fixture for a torque meter includes a bearing having a cylindrical stator and a rotor, two or more arms, and two or more elastic members. The cylindrical stator defines a through hole therein. The rotor is rotatably received in the through hole and is configured for holding the torque meter. The at least two arms are respectively connected to two opposite sides of the cylindrical stator. Each of the elastic members elastically supporting a corresponding arm, a compression direction and a rebound direction of the elastic members are parallel to a rotation axis of the rotor.

Abstract: A tool for clamping an optical glass element includes a first arm, a second arm, a first clamping portion and a second clamping portion. The first and second arms are pivotally connected with each other and are rotatable relative to each other about a first axis. The first clamping portion is rotatably connected to an end portion of the first arm distal from the first axis and is rotatable relative to the first arm about a second axis. The second axis is substantially perpendicular to the first axis. The second clamping portion is rotatably connected to an end portion of the second arm distal from the first axis and is rotatable relative to second arm about a third axis. The third axis is substantially perpendicular to the first axis. The first and second clamping portions are configured for cooperatively clamping the optical glass element therebetween.

Abstract: A fixture for a torque meter includes a bearing having a cylindrical stator and a rotor, two or more arms, and two or more elastic members. The cylindrical stator defines a through hole therein. The rotor is rotatably received in the through hole and is configured for holding the torque meter. The at least two arms are respectively connected to two opposite sides of the cylindrical stator. Each of the elastic members elastically supporting a corresponding arm, a compression direction and a rebound direction of the elastic members are parallel to a rotation axis of the rotor.