Abstract: A semiconductor device and a method of forming the same are provided. The method includes forming a bottom electrode layer over a substrate. A magnetic tunnel junction (MTJ) layers are formed over the bottom electrode layer. A top electrode layer is formed over the MTJ layers. The top electrode layer is patterned. After patterning the top electrode layer, one or more process cycles are performed on the MTJ layers and the bottom electrode layer. A patterned top electrode layer, patterned MTJ layers and a patterned bottom electrode layer form MTJ structures. Each of the one or more process cycles includes performing an etching process on the MTJ layers and the bottom electrode layer for a first duration and performing a magnetic treatment on the MTJ layers and the bottom electrode layer for a second duration.

Abstract: A first and second patterned circuit layer are formed on a first surface and a second surface of a base material. A first adhesive layer is formed on the first patterned circuit layer. A portion of the first surface is exposed by the first patterned circuit layer. The metal reflection layer covers the first insulation layer and a reflectance thereof is greater than or equal to 85%, there is no conductive material between the first patterned circuit layer and the metal reflection layer, and the first adhesive layer is disposed between the first patterned circuit layer and the first insulation layer. A transparent adhesive layer and a protection layer are formed on the metal reflection layer. The transparent adhesive layer is disposed between the metal reflection layer and the protection layer. The protection layer comprises a transparent polymer. The light transmittance is greater than or equal to 80%.

Abstract: A base material is provided. A first patterned circuit layer and a second patterned circuit layer are formed on a first surface and a second surface of the base material. A first insulation layer and a metal reflection layer are provided on the first patterned circuit layer and a portion of the first surface exposed by the first patterned circuit layer, wherein the metal reflection layer covers the first insulation layer, and a reflectance of the metal reflection layer is substantially greater than or equal to 85%, there is no conductive material between the first patterned circuit layer and the metal reflection layer. A first ink layer is formed on the first insulation layer before the metal reflection layer is formed.

Abstract: A temperature control assembly includes a plurality of heating units and a plurality of temperature sensors. The heating units are arranged in a ring shape, and the temperature sensors are respectively arranged on the heating units. Each of the heating units includes a bearing hole and a heating body. The heating body surrounds the bearing hole and is configured to generate heat, and each of the temperature sensors is configured to sense a temperature.

Abstract: An active rollator includes an auxiliary frame, a driving assembly, a sensing assembly, and a controller. The sensing assembly is configured to sense an operation area and output a sensing signal. When a user holds handlebars of the auxiliary frame and stands in the operation area, the controller is configured to, according to the sensing signal and a sensing threshold, control the driving assembly to make the auxiliary frame have a motion. Therefore, the active rollator aids the travel of the user.

Abstract: A walker is provided. The walker includes a walker body, a handle unit, a first wheel unit and a second wheel unit. The handle unit is connected to the walker body. The first wheel unit is connected to the walker body. The second wheel unit is connected to the walker body. In an auxiliary mode, a first gap is formed between the first wheel unit and the second wheel unit. In a driving mode, a second gap is formed between the first wheel unit and the second wheel unit. The first gap is smaller than the second gap.

Abstract: A movable carrier includes a main body, a first wheel, a driving module, a first support member, a second wheel, a seat, a first handle and two first switches. The first wheel is pivotally connected to the main body. The driving module is disposed in the main body. The first support member is connected to the driving module. The second wheel is pivotally connected to the first support member. The seat is disposed on the main body. The first handle is pivotally connected to the seat and has a trigger portion. The first switches are disposed on the seat. When the first handle rotates with respect to the seat and the trigger portion triggers the first switch, the driving module drives the first support member to rotate with respect to the main body, so as to increase or decrease a distance between the first wheel and the second wheel.

Abstract: A barrier overcoming method for a mobile assistive device is disclosed. The barrier overcoming method includes sensing a surrounding environment of the mobile assistive device; determining whether a dangerous terrain exists in the surrounding environment of the mobile assistive device; determining whether the dangerous terrain belongs to a conquerable obstacle when the dangerous terrain exists in the surrounding environment around the mobile assistive device; and adjusting a status of the mobile assistive device to overcome the dangerous terrain when the dangerous terrain belongs to a conquerable obstacle.

Abstract: An active rollator includes an auxiliary frame, a driving assembly, a sensing assembly, and a controller. The sensing assembly is configured to sense an operation area and output a sensing signal. When a user holds handlebars of the auxiliary frame and stands in the operation area, the controller is configured to, according to the sensing signal and a sensing threshold, control the driving assembly to make the auxiliary frame have a motion. Therefore, the active rollator aids the travel of the user.

Abstract: An omnidirectional wheel is provided. The omnidirectional wheel includes a support unit, a major wheel, a first minor wheel and a second minor wheel. The major wheel is annular and is rotatably disposed on the support unit. The first minor wheel is rotatably disposed on the support unit. The first minor wheel is disposed on one side of the major wheel. The second minor wheel is rotatably disposed on the support unit. The second minor wheel is disposed on the other side of the major wheel. The omnidirectional wheel can easily roll over an obstacle when the omnidirectional wheel rolls laterally or forward.

Abstract: A walker is provided. The walker includes a walker body, a handle unit, a first wheel unit and a second wheel unit. The handle unit is connected to the walker body. The first wheel unit is connected to the walker body. The second wheel unit is connected to the walker body. In an auxiliary mode, a first gap is formed between the first wheel unit and the second wheel unit. In a driving mode, a second gap is formed between the first wheel unit and the second wheel unit. The first gap is smaller than the second gap.

Abstract: An omnidirectional wheel is provided. The omnidirectional wheel includes a support unit, a major wheel, a first minor wheel and a second minor wheel. The major wheel is annular and is rotatably disposed on the support unit. The first minor wheel is rotatably disposed on the support unit. The first minor wheel is disposed on one side of the major wheel. The second minor wheel is rotatably disposed on the support unit. The second minor wheel is disposed on the other side of the major wheel. The omnidirectional wheel can easily roll over an obstacle when the omnidirectional wheel rolls laterally or forward.

Abstract: A linkage mechanism including a base, a first linkage, a second linkage and a driving element is provided. The first linkage has a first end portion and a second end portion opposite to each other, and the first end portion is pivoted to the base. The second linkage has third end portion and a fourth end portion opposite to each other, wherein the third end portion is coupled to the base, and the second end portion and the fourth end portion are coupled with each other. The driving element is coupled to at least one of the second end portion and the fourth end portion, and is configured to drive the first linkage and the second linkage to move relative to the base. A walking aid device is also provided.

Abstract: A walker apparatus is provided. The walker apparatus includes a base, a plurality of wheels, a connection bracket, a handle unit and an actuating unit. The wheels are connected to the base. The connection bracket pivots on the base. The handle unit is disposed on the connection bracket. The actuating unit is connected to the base and the connection bracket. The actuating unit moves the connection bracket between a getting-up orientation and a walking-assistance orientation relative to the base. The user can stand up from a sitting position using the walker apparatus without external assistance from other people.

Abstract: A walking aid device including a moving body, a message receiving element, a positioning element, and a processor is provided. The message receiving element, the positioning element, and the processor are respectively disposed at the moving body, and the message receiving element and the positioning element are respectively electrically coupled to the processor. The message receiving element is configured to receive a message from a target, and the positioning element is configured to locate a position of the moving body. When the message from a target is received by the message receiving element, the processor determines an orientation of the target according to the message, and the positioning element locates the position of the moving body. The processor produces a position data according to the orientation of the target and the position of the moving body, and controls the moving body to move to where the target is located.

Abstract: A rotational positioning mechanism includes a base, a rotational shaft, a rotational plate, at least two first switches and a positioning assembly. The rotational shaft is pivoted to the base. The rotational plate is connected to the rotational shaft and is configured to rotate relative to the base along with the rotational shaft. The rotational plate has at least two first positioning portions. The two first switches are respectively disposed at the two first positioning portions. The positioning assembly is disposed at the base, and comprises a positioning component configured to form a structural interference with any one of the first positioning portions or remove the structural interference. After the positioning component forms the structural interference with any one of the first positioning portions, the positioning component abuts against the corresponding first switch, and the degree of rotational freedom of the rotational plate and the rotational shaft are restricted.

Abstract: A diffuser includes a cone body including an apex portion, a bottom portion, and a side edge portion. The apex portion forms a partial spherical surface, and the side edge portion is aspherical and is connected between the apex portion and the bottom portion. The apex portion satisfies: 2R/3?r?R, where r is a radius of curvature of the apex portion, and R is a radius of curvature of a spherical diaphragm of a tweeter speaker. A loudspeaker including a tweeter speaker and a diffuser is also provided.

Abstract: A movable carrier includes a main body, a first wheel, a driving module, a first support member, a second wheel, a seat, a first handle and two first switches. The first wheel is pivotally connected to the main body. The driving module is disposed in the main body. The first support member is connected to the driving module. The second wheel is pivotally connected to the first support member. The seat is disposed on the main body. The first handle is pivotally connected to the seat and has a trigger portion. The first switches are disposed on the seat. When the first handle rotates with respect to the seat and the trigger portion triggers the first switch, the driving module drives the first support member to rotate with respect to the main body, so as to increase or decrease a distance between the first wheel and the second wheel.

Abstract: A walker apparatus is provided. The walker apparatus includes a base, a plurality of wheels, a connection bracket, a handle unit and an actuating unit. The wheels are connected to the base. The connection bracket pivots on the base. The handle unit is disposed on the connection bracket. The actuating unit is connected to the base and the connection bracket. The actuating unit moves the connection bracket between a getting-up orientation and a walking-assistance orientation relative to the base. The user can stand up from a sitting position using the walker apparatus without external assistance from other people.

Abstract: A diffuser includes a cone body including an apex portion, a bottom portion, and a side edge portion. The apex portion forms a partial spherical surface, and the side edge portion is aspherical and is connected between the apex portion and the bottom portion. The apex portion satisfies: 2R/3?r?R, where r is a radius of curvature of the apex portion, and R is a radius of curvature of a spherical diaphragm of a tweeter speaker. A loudspeaker including a tweeter speaker and a diffuser is also provided.