Abstract: An exemplary an apparatus for testing chips with ball grid array comprised of a number of solder balls is provided. The apparatus includes a main printed circuit board, a supporting board and a testing device. The main printed circuit board has a edge connector. The supporting board defines a number of electrically conductive through holes arranged in an array corresponding to the ball grid array. One end of each of the electrically conductive through holes is configured for electrically connection to the main printed circuit board, the other end of the electrically through holes is configured for receiving and electrically connecting the corresponding solder ball of the ball grid array. The testing device has a socket connector for insertion of the edge connector therein. The testing device is configured for testing the chip.

Abstract: The present invention relates to an apparatus for plasma-processing of flexible printed circuit boards (FPCBs). The apparatus includes a plasma-discharging chamber, two electrodes arranged in the chamber for generating plasma in the chamber, a frame, and two elongated holding arms disposed on the frame. The frame includes a number of spaced parallel first bars and a number of spaced parallel second bars. The first bars intersecting with the second bars. The elongated holding arms are substantially parallel with each other. Each of the arms has an inner sidewall. The inner sidewalls of the elongated holding arms are opposite to each other. An elongated recess is defined in each of the inner sidewalls proximate to the frame. The apparatus can ensure uniform plasma-processing and protect FPCBs from being burned.

Abstract: CNT materials comprising aligned carbon nanotubes (CNTs) with pre-determined site densities, catalyst substrate materials for obtaining them and methods for forming aligned CNTs with controllable densities on such catalyst substrate materials are described. The fabrication of films comprising site-density controlled vertically aligned CNT arrays of the invention with variable field emission characteristics, whereby the field emission properties of the films are controlled by independently varying the length of CNTs in the aligned array within the film or by independently varying inter-tubule spacing of the CNTs within the array (site density) are disclosed. The fabrication of microelectrode arrays (MEAs) formed utilizing the carbon nanotube material of the invention is also described.

Abstract: An exemplary screen printing stencil includes a frame, a screen mesh and a metal foil. The screen mesh is stretched tightly in the frame. The metal foil is attached on a surface of the screen mesh. A screen printing pattern is defined on the metal foil by a laser machining process. A machining tolerance of the screen printing pattern is either in a range from 0.005 to 0.02 millimeters or in a range from ?0.02 to ?0.005 millimeters. The screen printing stencil can be used in a screen printing process of manufacturing a printed circuit board, thereby improving quality of the printed circuit board.

Abstract: The present invention relates to a printed circuit board. In one embodiment, a printed circuit board includes a dielectric layer and a conductive trace formed on the dielectric layer. The conductive layer includes a first conductive portion, a connecting portion and a second conductive portion. The connecting portion includes a first end and a second end. The first end is connected to the first conductive portion; the second end is connected to the second conductive portion. A width of the connecting portion gradually decreases from the first end to the second end. Reflection and cross talk of signals transmitted in the presented printed circuit board can be reduced.

Abstract: The present invention relates to microelectode arrays (MEAs), and more particularly to carbon nanotube nanoelectrode arrays (CNT-NEAs) for chemical and biological sensing, and methods of use.

Abstract: A method for manufacturing a multilayer FPCB includes the steps of: providing a first substrate, a second substrate and a binder layer; defining an opening on the binder layer; defining a first slit in the dielectric layer of the first substrate; laminating the first substrate, the binder layer and the second substrate; forming a second slit in the conductive layer of the first substrate, the second slit is configured to be aligned with the first slit, cutting the first substrate, the binder layer and the second substrate thereby forming a multilayer flexible printed circuit board having different numbers of layers in different areas.

Abstract: A mobile apparatus, a geographical information system and a method of acquiring geographical information are disclosed. The geographical information system is used for acquiring geographical information of a geographical object. The system at least includes a geographical object message and a mobile apparatus. The geographical object message is provided by the geographical object. The geographical object is generally an identification code or an image. The mobile apparatus is used for receiving the geographical object message, and generating an inquiry command after identifying the geographical object. Geographical information corresponding to the inquiry command is searched from a database of the mobile apparatus based on the inquiry command. The searched geography information is displayed on the mobile apparatus. The invention provides a direct viewing of geographic information for users to improve the degree of freedom of a trip and effectively manage personal time.

Abstract: A method for manufacturing a multilayer FPCB includes the steps of: providing a first copper clad laminate, a second copper clad laminate and a binder layer; defining an opening on the binder layer; defining a first slit on the first copper clad laminate; laminating the first copper clad laminate, the binder layer and the second copper clad laminate; defining a via hole for establishing electric connection between the first copper clad laminate and the second copper clad laminate; cutting the first copper clad laminate, the binder layer and the second copper clad laminate thereby forming a multilayer flexible printed circuit board having different numbers of layers in different areas.

Abstract: The present inventions relates to a method for manufacturing a multilayer FPCB having different number of layers in different areas. The method includes the steps of: providing a binder layer; removing a portion of the binder layer thereby defining an opening in the binder layer; forming a multilayer FPCB which having a first copper clad laminate structure and a second copper clad laminate structure disposed on two opposite sides of the binder layer respectively using the binder layer; cutting the first copper clad laminate structure; cutting the multilayer FPCB in manner that a portion of first copper clad laminate structure that is exposed to the opening is separated from the first copper clad structure thereby obtain a multilayer FPCB having different number of layers in different areas.

Abstract: This invention relates to a method and an apparatus of dispensing roll paper products, such as roll tissue and kitchen towel paper. More particular, it relates to an apparatus which can repeatedly releases, stops and allows users to rip off roll paper at any length with one-hand operation.

Abstract: CNT materials comprising aligned carbon nanotubes (CNTs) with pre-determined site densities, catalyst substrate materials for obtaining them and methods for forming aligned CNTs with controllable densities on such catalyst substrate materials are described. The fabrication of films comprising site-density controlled vertically aligned CNT arrays of the invention with variable field emission characteristics, whereby the field emission properties of the films are controlled by independently varying the length of CNTs in the aligned array within the film or by independently varying inter-tubule spacing of the CNTs within the array (site density) are disclosed. The fabrcation of microelectrode arrays (MEAs) formed utilizing the carbon nanotube material of the invention is also described.

Abstract: A lotion applicator that has a hollow handle for containing lotion. The hollow handle has a closable opening and flexible walls such that the squeezing of the walls forces lotion contained within the hollow handle to exit the closable opening. A casing is attached to the handle and covers the closable opening. A casing cap is removably attached to the casing such that a storage compartment is formed by the attachment of the casing cap to the casing. A porous pad is contained within the storage compartment and is for absorbing lotion squeezed out of the handle. Some purposes of the casing cap are to delay drying of the pad, protect the pad from contamination, and prevent lotion on the pad from contaminating other objects. In a preferred embodiment, the user first removes the casing cap from the casing. Then, the user removes the handle from the casing. The user then opens the closable opening and squeezes the handle so that lotion exits the handle and is applied to the pad.