Abstract:
The invention relates to a microstrip arrangement comprising a first and a second microstrip conductor. The two microstrip conductors have essentially the same dimensions in their longitudinal direction and transverse direction, and are galvanically interconnected by means of at least one connection. The two microstrip conductors also extend essentially parallel to one another on either side of a dielectric material. As a result of this design of the microstrip arrangement, the field losses and also other influences caused by the dielectric material will be very considerably reduced, and in practice a resultant microstrip arrangement is obtained, which, with regard to its electrical performance, appears to be suspended in the air. Preferred embodiments comprise a microstrip antenna, a circuit board and a conductor application.
Abstract:
A ground plane interconnection is provided on first and second substrates (100, 112), the first and second substrates (100, 112) having respective first and second ground layers (110, 118) disposed on a first surface of each of the first and second substrates (100, 112). A ground conductor strip (120) is disposed on a second surface of the second substrate (112), wherein the ground conductor strip (120) includes a plurality of electrically conductive members (124) which pass through the second substrate (112) to electrically couple the ground conductor strip (120) and the second ground layer (118). The first substrate (100) is positioned with respect to the second substrate (112) such that when the first substrate (100) is placed proximate the second substrate (112), the ground conductor strip (120) electrically couples the first and second ground layers (110, 118) to form a continuous ground plane. A method of forming a reduced-inductance continuous ground plane is also provided.
Abstract:
A printed wiring board (1) such that openings (8L) formed around a pad (12L) which is a photo-via land do not overlap a pad (12L) and the area of each of the openings (8L) around the pad (12L) is equal to that of each of the other openings (8), the amount of resin (13) with which each of the openings (8, 8L) is filled is equal to that with which each of the openings (8L) is filled over the whole wiring board (1), and the amounts of resin (13) overflowing from the openings (8, 8L) are equal to each other. The circuit pattern provided on the upper surface of an interlayer insulating layer formed on the printed wiring board can be connected to a conductor pad area without causing any defective connection, providing a highly-reliable printed wiring board.
Abstract:
A connection method for connecting scan and data or row and column drive components applies redundant multitier contacts on the components. Multitier redundant sets of contacts (12) are deposited on a fine pitch component (10), such as an X-ray detector intended to be connected to associated electronics (14). A flexible circuit (18) is then bonded to a first one of the multitier sets of contacts (12) on the fine pitch component (10), the flexible circuit (18) forming a permanent connection to the associated electronics (14). Multitier redundant sets of contacts (16) can also be deposited on the associated electronics (14). Then defect free portions of solid state X-ray detector connections can be salvaged in instances where the bonding process produces a poor connection in an isolated area, or the detector and/or associated electronics can be salvaged if either the detector or part of the associated electronics are defective.
Abstract:
Two pairs of diagonally linked squares with rounded edges are used as fixed contacts in the production of keyboards. A direct connection is ensured in the diagonal direction; the squares consist of conductive lacquer (carbon lacquer) and cover copper pads on a printed circuit board.
Abstract:
First to third power interconnections are provided by first to third interconnection layers (56, 57, 42). A first insulating layer (54) is provided between the first and second interconnection layers (56, 57), and a second insulating layer (55) is provided between the second and third interconnection layers (57, 42). A plurality of first via holes (41) are provided in the first insulating layer (54) and connect the first and second power interconnection layers (56, 57), and a plurality of second via holes (43) are provided in the second insulating layer (55) with positions shifted from those of the first via holes (41) and connect the second and third power interconnection layers (57, 42). A ceramic or glass ceramic substrate (50) supports the layers (54, 56, 57, 55, 42). The structure has lower distribution resistance.
Abstract:
The invention relates to a luminous display (10) having a plurality of lighting means, in particular a plurality of light-emitting diodes, which are arranged on a transparent main body. The transparent main body reduces visible light by at most 40% on average. The transparent main body is preferably in the form of a film, more preferably in the form of a plastic film. The lighting means are supplied with voltage by means of conducting tracks. The conducting tracks are electrically connected preferably to a control unit (26a-g) at one end and to at least one lighting means at the other end.
Abstract:
An end of a first line and an end of a second line of a first write wiring pattern are arranged on both sides of a third line of a second write wiring pattern. Circular connection portions are provided at the ends of the first line and the second line. In addition, through holes are formed in respective portions of a base insulating layer below the connection portions. Each connection portion comes in contact with a connecting region of a suspension body within the through hole.