Abstract:
A technique comprising: forming a plurality of smaller substrates from one or more larger substrates by a reduction process according to which there is some possible variation size between the smaller substrates within a variation range; and, in advance of said reduction process, providing said one or more larger substrates with one or more detection marks whose size and location are selected such that after the reduction process each smaller substrate includes a portion of at least one of said one or more detection marks, said portion having one or more edges that coincide with at least a part of one or more edges of the smaller substrate whatever actual size the smaller substrate has within said variation range.
Abstract:
Provided is a display device including: a display panel 10; a circuit board 14; a connector 16 mounted on the circuit board; a flexible wiring board 18 attached to the connector; and a housing 20 which accommodates the display panel, the circuit board, and one part of the flexible wiring board, and includes a slit 28 formed therein, from which another part of the flexible wiring board is pulled out. The flexible wiring board includes, in the one part of the flexible wiring board, a first region extending in directions which intersect a pull-out direction from the slit, and having a width which is larger than a width of the flexible wiring board at a position overlapping the slit.
Abstract:
A tile subarray includes an upper multi-layer assembly (UMLA) provided from a first plurality of printed circuit boards and a lower multi-layer assembly (LMLA) provided from a second plurality of printed circuit boards. Each of the UMLA and LMLA includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the UMLA and LMLA. The RF interconnects can include one or more RF matching pads which provide a mechanism for matching impedance characteristics of RF stubs to provide the RF interconnects having desired insertion loss and impedance characteristics over a desired RF operating frequency band. The RF matching pads allow the manufacture of circuit boards having RF interconnects without the need to perform any back drill and back fill operation to remove stub portions of the RF interconnects in the UMLA and LMLA.
Abstract:
The invention relates to a method for connecting at least two printed circuit board modules to form a printed circuit board panel by means of a virtual panel. The method for connecting printed circuit board modules uses positioning tags and counterparts thereof, which align the printed circuit board modules to a target location on the printed circuit board panel.
Abstract:
A printed circuit board (1) provided with an attachement (3) which surrounds surface contacts (11) of the printed circuit board (1) that are to be contacted by a printed circuit board connector that covers the portion of the printed circuit board (1) and edges of the printed circuit board (1) around the surface contacts (11) and includes recesses (31) corresponding to the surface contacts (11) assuring proper connection with contacts (21) of a printed circuit board connector.