Abstract:
There are provided a flexible printed circuit board having enhanced peeling force and a touch panel including the same. The flexible printed circuit board (FPCB) includes a first bonding portion and a second bonding portion respectively bonded to a first circuit unit and a second circuit unit. The first bonding portion includes a pad corresponding portion corresponding to pads of the first circuit unit and dummy portions outwardly extending from both end portions of the pad corresponding portion. An FPCB wiring formation portion includes FPCB wirings respectively connected to the pads and extending from the first bonding portion to the second bonding portion and concave portions respectively disposed to be adjacent to the dummy portions and having a curved surface.
Abstract:
An electro-acoustic transducer (100) comprising: a body (110) defining a mounting surface (114) for mounting the electro-acoustic transducer (100) on a substrate and an opening (120) for allowing sound to enter or exit the body (110); a diaphragm (132) mounted in the body (110); and a compression chamber (118) located between the diaphragm (132) and the opening (120); wherein the opening (120) is located on the mounting surface (114).
Abstract:
There is provided a method for manufacturing a component interconnect board (150) comprising a conductor structure for providing electrical circuitry to at least one component (114) when mounted on the component board, the method comprising providing a conductor sheet (100) with a first predetermined pattern (115), providing a solder resist sheet (112) with a second predetermined pattern for defining solder areas (125) of the component board, forming a subassembly (120) by laminating the solder resist sheet on top of the conductor sheet, applying solder onto the subassembly, placing the at least one component onto the subassembly, performing soldering, and laminating the subassembly to a substrate (130). The solder resist sheet is further arranged to act as a carrier for the conductor sheet.
Abstract:
The invention proposes a printed circuit board (100) having a plurality of layers, which have at least one outer layer (110, 120) and at least one inner layer (130, 140) adjoining the outer layer (110, 120). The printed circuit board (100) has a plurality of micro throughplatings (170), which are formed between a supply voltage area of the at least one outer layer (110, 120) and a supply voltage area of the at least one inner layer (130, 140).
Abstract:
Vias (106) are typically of a lower impedance than the signal lines (102, 128) connected to them. The noise and reflected signals resulting in impedance mismatch may require circuits to be operated at a frequency far lower than desired. An embodiment avoids impedance mismatch in circuits and achieves an advance in the art by providing a via (106) with higher impedance through the addition of split ring resonators (104, 112, 120, 126) to each end of the via (106).
Abstract:
A printed wiring board (1) has a solder-land group (5, 6) for placing a quad flat package IC (3), and the solder-land group (5, 6) consists of front solder-land groups (5) and rear solder-land groups (6). The printed wiring board 1 includes rear solder-drawing lands (9) that are positioned adjacent to rear solder-land groups (6), that have front edges each of which is substantially parallel to a longitudinal direction of rear solder lands (6a, 6b) constituting the rear solder-land group (6) and has a length approximately equal to or longer than that of the solder lands in the longitudinal direction, that are separated into two parts in a horizontal direction with respect to a traveling direction of solder flow such that a gap between the respective two separate lands (9) is made wider in its rearward portion than that in its frontward portion, and that have a slit (9a) substantially parallel to the longitudinal direction near the front edge.