Abstract: A retaining mechanism for holding a circuit board and a related electronic device include a supporter, a first fixing component, a second fixing component and a third fixing component. The first fixing component is disposed on a supporting wall of the supporter, to buckle an edge of the circuit board and to constrain a movement of the circuit board in a first direction. The second fixing component is disposed on another supporting wall of the supporter, to contact against another edge of the circuit board and to constrain a movement of the circuit board in a second direction. The third fixing component is disposed on a base of the supporter. A holding portion and a hooking unit of the third fixing component respectively holds a bottom of the circuit board and inserts into an opening on the circuit board, to prevent the circuit board and the holding portion from separation.

Abstract: A structure of a LED heat dissipating substrate and a method of manufacturing such substrate are provided. Material removing process are mainly performed to make a first conducting board, a second conducting board and each of third conducting boards be disconnected from each other. In addition, positive and negative wires are connected to the first and second conducting boards to power and excite a LED die. Thus, the structure can be curved, have the unlimited length, can be continously produced without the conventional electroplating, etching and water cleaning processes, so that no wastewater is produced and the environment protection object is achieved.

Abstract: A button device has a circuit board, a tact switch having a pressed surface, a light source, and a resilient button capable of sliding relative to the circuit board. The resilient button includes a pressed portion having a projection surface and a light guide column connected to the pressed portion and directing light toward the projection surface. The light guide column includes a light receiving surface facing the light source with a certain distance apart and a touchable portion apart from the pressed surface with a certain distance used for touching the tact switch.

Abstract: A button device comprises: a circuit board; a tact switch disposed on the circuit board, wherein the tact switch has a pressed surface; a light source disposed on the circuit board; and a resilient button capable of sliding relative to the circuit board. The resilient button includes a pressed portion having a projection surface and a light guide column connected to the pressed portion and directing light toward the projection surface. The light guide column includes a light receiving surface facing the light source with a certain distance apart and a touchable portion apart from the pressed surface with a certain distance used for touching the tact switch.

Abstract: An active solder is revealed. The active solder includes an active material and a metal substrate. There are two kinds of active materials, titanium together with rare earth elements and magnesium. The metal substrate is composed of a main component and an additive. The main component is tin-zinc alloy and the additive is selected from bismuth, indium, silver, copper or their combinations. The active solder enables targets and backing plates to be joined with each other directly in the atmosphere. The target is ceramic or aluminum with low wetting properties. The bonding temperature of the active solder ranges from 150° C. to 200° C. so that the problem of thermal stress can be avoided.

Abstract: A power rail assembly includes a base, a bracket, a guiding member, a sliding seat, a screw member, a screw rod, and a driving motor. The base includes a top surface and a bottom surface. The bracket is disposed on the top surface vertically. The guiding member is disposed on the bracket and provides two guiding slots. The sliding seat includes a connection portion and two sliding portions. The two sliding portions protrude outwardly on the connection portion and embed into the two guiding slots respectively, so that the sliding set is movably disposed on the guiding member. The screw member is fixed on the connection portion and provides a screwing trough. The screw rod is disposed in an accommodating portion of the bracket and passes through the screwing trough, so that the screw member is engaged with the screw rod. The driving motor is fixed on the bracket.

Abstract: An active solder is revealed. The active solder includes an active material and a metal substrate. There are two kinds of active materials, titanium together with rare earth elements and magnesium. The metal substrate is composed of a main component and an additive. The main component is tin-zinc alloy and the additive is selected from bismuth, indium, silver, copper or their combinations. The active solder enables targets and backing plates to be joined with each other directly in the atmosphere. The target is ceramic or aluminum with low wetting properties. The bonding temperature of the active solder ranges from 150° C. to 200° C. so that the problem of thermal stress can be avoided.

Abstract: An object tracking and locating device includes two or more identical units each having a receiving/transmitting module coupled to an antenna member for receiving and transmitting signals, a ZigBee wireless transmission module coupled to the receiving/transmitting module for processing the signals, and an alarm device coupled to the ZigBee wireless transmission module for generating a signal to indicate the spacing distance and the direction between the units, and the two or more identical units may be easily and quickly manufactured with a simplified manufacturing procedure and a reduced or decreased manufacturing cost.

Abstract: A method of preparing channel-type mesoporous material with an elliptical pore section is described. An alkaline solution containing two surfactants different in the electronic properties of their hydrophilic groups is prepared. A silica precursor is added to form a stack of rod-like micelles each having an elliptical section with the silica precursor between the rod-like micelles. The silica precursor is reacted into a silica framework. The rod-like micelles are removed from the silica framework.

Abstract: A channel-type mesoporous material with an elliptical pore section has a 2D-rectangular pore arrangement. Besides, the channel-type mesoporous material includes silica and has a unit cell ratio a/b satisfying the inequality of ?{square root over (3)}<a/b?2.85. The synthesis procedure can be easily applied to prepare functional mesoporous silica materials, and examples given in this application are the syntheses of cyanoethyl-functionalized and mercaptopropyl-functionalized mesoporous materials with a c2mm symmetry. The mesoporous materials discussed herein have great potential for various advanced applications in the fields of catalysis, selective adsorption, controlled drug delivery and release, and many of other applications.

Abstract: An IC card includes an opening formed in a bottom portion of a casing, a circuit board engaged into the casing, one or more batteries attached to the circuit board and received in the opening of the casing for reducing the thickness of the IC card, a processor and an antenna member are attached to the circuit board and electrically coupled together, and a cover member is attached to the casing and engaged onto the circuit board for shielding the circuit board and for retaining the circuit board in the casing, and the cover member includes a lid aligned with the batteries and openable to expose the batteries and to allow the batteries to be changed with a new one when the batteries have been consumed.

Abstract: A locking method and device applicable to lock a linearly retractable device includes a locking plate in a first direction and a second direction perpendicular to each other. In the first direction, the locking plate is movable in a release position and a safety position. In the second element, the locking plate is movable in a latched and an unlatched position. When the locking plate is in the safety position, it is unmovable from the latched position to the unlatched position so as to prevent any unintentional force to release the lock.

Abstract: A locking method and device applicable to lock a linearly retractable device includes a locking plate in a first direction and a second direction perpendicular to each other. In the first direction, the locking plate is movable in a release position and a safety position. In the second element, the locking plate is movable in a latched and an unlatched position. When the locking plate is in the safety position, it is unmovable from the latched position to the unlatched position so as to prevent any unintentional force to release the lock.