摘要:
An antenna device includes an antenna housing having a chamber and a slot formed in one end and formed between two arms and communicating with the chamber, an antenna member having a stud engaged into the slot and rotatably coupled to the antenna housing with a pivot axle and having two or more flat surfaces formed in the stud. A spring-biased follower is slidably received in the antenna housing and includes an actuator for engaging with either of the flat surfaces of the antenna member and for anchoring and retaining the antenna member to the antenna housing at selected angular positions. The antenna device includes a greatly simplified structure with a greatly reduced expense.
摘要:
An antenna device includes an antenna housing having a chamber and a slot formed in one end and formed between two arms and communicating with the chamber, an antenna member having a stud engaged into the slot and rotatably coupled to the antenna housing with a pivot axle and having two or more flat surfaces formed in the stud. A spring-biased follower is slidably received in the antenna housing and includes an actuator for engaging with either of the flat surfaces of the antenna member and for anchoring and retaining the antenna member to the antenna housing at selected angular positions. The antenna device includes a greatly simplified structure with a greatly reduced expense.
摘要:
A handle of a hand tool includes an enclosed chamber defined therein and a shank is connected to an end of the handle. The enclosed chamber allows the handle to be floatable in water. A fluorescent layer is coated on an outer periphery of the handle such that the handle can be seen in dark.
摘要:
A circuit board with a quality-indicator mark and a method for indicating quality of the circuit board. The circuit board includes a plurality of circuit board units. A plating bus is formed around each circuit board unit and extended to form a plating trace in an inner-layer circuit structure of each circuit board unit. The inner-layer circuit structure is inspected in quality to maintain or break connection between the plating trace and plating bus if the quality is good or not. At least one circuit structure is formed on the inner-layer circuit structure and electrically connected to the plating trace to form a conductive mark on each circuit board unit. A metal protection layer is formed on the at least one circuit structure via the plating bus, and the conductive mark with the metal protection layer indicates that the inner-layer circuit structure of the circuit board unit is good.
摘要:
Novel methods are provided that results in the formation of single-cap VIPs in a substrate are described herein. As a result, fine pitch trace patterns may be formed on the substrate. The methods may include initially providing a substrate having a first and a second side, the first side being opposite of the second side. A via may then be constructed in the substrate, the via being formed within a via hole that extends from the first side to the second side of the substrate, the formed via having a first end located at the first side of the substrate, and a second end opposite the first end located at the second side of the substrate. A selective deposition may be performed of a conductive material on the second end of the via to form a conductive pad directly on the via on the second side of the substrate without depositing the conductive material onto the first side of the substrate.
摘要:
A flash preventing substrate and a method for fabricating the same are proposed. A core defined with a plurality of substrate units is prepared. A circuit patterning process is performed to form circuit structures on the core corresponding to the substrate units, plating buses between the adjacent substrate units and electrically connected to the circuit structures, and a molding ring surrounding all the substrate units. The molding ring is located at a position predetermined for contacting the substrate with a mold. A solder mask layer covers the circuit structures, the plating buses and the molding ring, and is formed with a plurality of openings therein, such that predetermined portions of the circuit structures are exposed via the openings and serve as electrical input/output connections. During a molding process, the mold can tightly abut against the solder mask layer covering the molding ring to prevent outward flashes of an encapsulating material.
摘要:
A chip carrier for testing electrical performance of a passive component includes: a core layer having a plurality of conductive traces on a surface thereof; at least one first trace connected with the passive component and having a first predetermined position and two ends, wherein the two ends are respectively electrically connected to a first bond finger on the surface of the chip carrier and to a first ball pad on an opposite surface of the chip carrier; at least one second trace not connected with the passive component and having two ends and a second predetermined position located on the same surface as the first predetermined position, one end of the second trace being electrically connected to a second ball pad located on the same surface as the first ball pad; and a solder mask layer applied over the conductive traces, with the first and second predetermined positions exposed.
摘要:
A semiconductor package with flash-absorbing mechanism and a fabrication method thereof are proposed, wherein a flash-absorbing structure is formed on a gold-plated copper layer of a substrate, and adhesion between the flash-absorbing structure and a molding material is larger than that between the molding material and a mold, such that flashes of the molding material are not adhered to the mold after completing a molding process unlike the conventional technology, thereby ensuring quality of the fabricated semiconductor package.
摘要:
A semiconductor package, and a fabrication method and a carrier thereof are provided. The fabrication method includes: preparing a core layer having a first surface and an opposed second surface, wherein the first and second surfaces are electrically connected to each other by a plurality of conductive vias; forming a plurality of bond pads on the second surface, wherein the bond pads are electrically connected to the conductive vias, and each of the conductive vias is partly located within a boundary of a corresponding one of the bond pads and is partly located out of the boundary of the corresponding bond pad, such that the carrier is fabricated; mounting and electrically connecting a chip to the first surface; forming an encapsulant on the first surface to encapsulate the chip; and forming solder joints on the bond pads of the second surface. By this arrangement, a popcorn effect is avoided.