摘要:
A light emitting device and a fabricating method thereof are described. The light emitting device includes a substrate, a light emitting chip, a tubular structure, and a fluorescent conversion layer. The tubular structure is formed on a surface of the substrate. The light emitting chip is disposed on the surface of the substrate and is surrounded by the tubular structure. The fluorescent conversion layer is disposed in the tubular structure and covers the light emitting chip. A ratio of a maximal vertical thickness and a maximal horizontal thickness of the fluorescent conversion layer at the light emitting chip is between 0.1 and 10. A distance for the light ray to pass through the fluorescent conversion layer is controlled by using the tubular structure, so as to solve a problem of the conventional art that fluorescent powder coating package technique results in non-uniform color temperature of the emitted light.
摘要:
A module IC package structure includes a substrate unit, an electronic unit, a conductive unit, a package unit and a shielding unit. The substrate unit includes a circuit substrate having at least one grounding pad. The electronic unit includes a plurality of electronic elements electrically connected to the circuit substrate. The conductive unit includes at least one elastic conductive element disposed on the circuit substrate, and the elastic conductive element has a first end portion electrically connected to the grounding pad. The package unit includes a package resin body disposed on the circuit substrate to cover the electronic elements and one part of the elastic conductive element, and the elastic conductive element has a second end portion is exposed from the package resin body. The shielding unit includes a metal shielding layer formed on the outer surface of the package resin body to electrically contact the second end portion.
摘要:
A switching mechanism for a camera device includes a driving device, a first screw bar connecting to the driving device, a second screw bar connecting to the first screw bar, and a lead screw having an end coupled with the second screw bar. The first screw bar is driven by the driving device via a screw thread thereof, and the second screw bar is driven by the first screw bar via a screw thread thereof, thereby driving the lead screw for rotation. The screw nut is disposed on the lead screw and moved back and forth via the rotation of the lead screw. Two stop blocks disposed at two ends of the lead screw respectively are to limit two positions of the moved screw nut while the screw nut is moved beyond a threaded area of the lead screw, upon which time the screw nut is slightly engaged with the lead screw.
摘要:
A switching mechanism for a video camera includes: a control unit; a driving device connected with and controlled by the control unit; a first belt pulley connected with the driving device; a second belt pulley smaller than the first belt pulley in diameter; a belt looped around the first and second belt pulleys for power transmission, and including a first protuberance; a translation member provided with a second protuberance so that through a loose fitting connection between the two protuberances, the translation member is driven to move; and a positioning element having a positioning plane, at least two inclines, and at least two top surfaces, wherein the positioning plane and the at least two inclines are designed to contact the second protuberance of the translation member alternately so as to restrict and reposition the translation member.
摘要:
A wireless receiving and transmitting device includes a casing unit, an antenna unit, a substrate unit, a projection unit and an electrical connector unit. The casing unit has a casing. The antenna unit has an antenna module fixed in the casing. The substrate unit has a circuit substrate movably disposed in the casing and electrically connected to the antenna module. The projection unit has a projection element positioned on one end of the circuit substrate. The projection element has a bottom portion selectively exposed outside the casing or hidden in the casing according to the move of the circuit substrate, and the projection element has a top portion always exposed outside the casing. The electrical connector unit has an electrical connector position on another end of the circuit substrate, and the electrical connector is selectively exposed outside the casing or hidden in the casing.
摘要:
A manufacturing method for a packaging structure of SIP (system in package) includes the following steps. First step is providing a substrate having electronic devices thereon. Second step is covering the electronic devices by a mixture of a molding compound and a conductive polymer precursor so as to form a molding structure, wherein the substrate, the electronic devices and the molding structure forms a collective electronic module. Third step is separating the collective electronic module into a plurality of individual electronic modules. Fourth step is performing a doping step by using a doping element for transforming the conductive polymer precursor in the mixture into a conductive layer near the surface of the molding structure. Therefore, the manufacturing method is optimized for forming a shielding structure of the SIP module.
摘要:
A manufacturing method for a packaging structure of SIP (system in package) includes the following steps. First step is providing a substrate having electronic devices thereon. Second step is covering the electronic devices by a mixture of a molding compound and a conductive polymer precursor so as to form a molding structure, wherein the substrate, the electronic devices and the molding structure forms a collective electronic module. Third step is separating the collective electronic module into a plurality of individual electronic modules. Fourth step is performing a doping step by using a doping element for transforming the conductive polymer precursor in the mixture into a conductive layer near the surface of the molding structure. Therefore, the manufacturing method is optimized for forming a shielding structure of the SIP module.
摘要:
A packaging structure includes a main substrate having a plurality of circuit lines thereon, and an electronic module having at least one conductive pad at the bottom thereof and having a plurality of conductive lines on the sides thereof. The pad and the conductive circuits are connected electrically to the circuits on the main substrate when the electronic module is disposed on the main substrate. As above-mentioned, one electronic module can be stacked on top of another so that the integrity of the packaging structure is improved.
摘要:
A structure of light-emitting diode (LED) dies having an AC loop (a structure of AC LED dies), which is formed with at least one unit of AC LED micro-dies disposed on a chip. The unit of AC LED micro-dies comprises two LED micro-dies arranged in mutually reverse orientations and connected with each other in parallel, to which an AC power supply may be applied so that the LED unit may continuously emit light in response to a positive-half wave voltage and a negative-half wave voltage in the AC power supply. Since each AC LED micro-die is operated forwardly, the structure of AC LED dies also provides protection from electrical static charge (ESD) and may operate under a high voltage.
摘要:
An alignment mark for increasing the accuracy of an alignment includes a cross pattern, two horizontal line patterns having serrated shape. The cross pattern is typically formed over a scribe line for alignment in semiconductor process. The cross pattern includes a vertical line and a horizontal line. The vertical line is vertical to the scribe line while the horizontal line is parallel to the scribe line. The horizontal patterns which are parallel to the scribe line are respectively connected to one end of the vertical line. The horizontal patterns have serrated patterns which are used to change the shape of a noise signal. The high of the serrated shape pattern is about 3 micro meters while the width of the serrated shape pattern is about 3 micro meters.