Abstract:
A display device according to an exemplary embodiment includes: a substrate including a display region configured to display an image, and a pad region positioned around the display region; and a first pad unit positioned on the pad region, wherein the first pad unit includes a first terminal region including a plurality of first pad terminals arranged in a first pattern, and a second terminal region including a plurality of second pad terminals arranged in a second pattern different from the first pattern.
Abstract:
Provided is a printed circuit board including a base substrate, first row pads, and second row pads. The base substrate has two sides, that can be adjacent, respectively extending in first and second directions. A plurality of pad group areas successively positioned along the first direction are defined on the base substrate. The first row pads are respectively disposed within the pad group areas and successively positioned along a third direction. The second row pads are respectively disposed within the pad group areas, successively positioned along the third direction, and spaced apart from the first row pads. Each of the second row pads is a predetermined distance from a corresponding one of the first row pads in the second direction.
Abstract:
A printed circuit board assembly 400 for reducing the impact of heat generated from circuitry within a handheld or non-handheld device is provided. The printed circuit board assembly includes a printed circuit board 404 comprising a plurality of conductive layers 406 and a plurality of dielectric layers 408 where each dielectric layer is disposed between a pair of conductive layers. Each conductive layer may include a first portion 406a and a second portion 406b separated by a gap 412 where the gaps in the alternating conductive layers are misaligned. The first portion of each conductive layer may be substantially thermally isolated from the second portion of each conductive layer.
Abstract:
Provided is a wiring substrate which allows connection terminals to be disposed at high density, can increase the degree of freedom of wiring layout, and can enhance the reliability of connection of the connection terminals. A wiring substrate of the present invention includes a laminate which includes one or more insulating layers and one or more conductor layers laminated together; a wiring formed on the laminate; a columnar connection terminal which is formed directly on the wiring and is in contact with at least one of opposite side surfaces of the wiring; and a solder resist layer which covers the wiring and which exposes at least a portion of the connection terminal. The width of the wiring at a position at which the connection terminal is formed is smaller than the length of the connection terminal in the width direction.
Abstract:
The objective of the present invention is to provide a multilayer printed wiring board in which malfunctions occurring in electronic components caused by electromagnetic-wave interference are prevented and high-density mounting of electronic components is attained. Especially, it is intended to protect other electronic components in the substrate from electromagnetic-wave interference generated in some circuits in the substrate. Multilayer wiring board (1) is structured with a multilayer wiring substrate in which conductive circuits (2) and insulation layers (11a, 11b, 12, 13, 14, 15) are formed and conductive circuits (2) separated by insulation layers (11a, 11b, 12, 13, 14, 15) are electrically connected to each other through vias (3); concave parts (21, 22) formed in insulation layers (11a, 11b, 12, 13, 14, 15); electromagnetic shielding layers (31, 32, 4 1 a, 41b, 42) formed on the bottom surface and at least on one side surface of concave parts (21, 22) and having a roughened surface; and electronic components (4A, 4B) accommodated in concave parts (21, 22).
Abstract:
An electronic circuit unit (1) includes a multi-layer substrate (2) in which high frequency circuits (3,4) are provided on two different layers and a ground layer (5) is formed between the two layers, and grounding lands (6) connected to peripheral conductive members through connection bars (6a) formed on a plurality of layers of the multi-layer substrate (2). The grounding lands (6) are connected to each other through a via hole (8) and conducted to the ground layer (5), and the connection bars (6a) protruding radially outward from at least two grounding lands (6) provided on different layers are arranged in different directions with respect to a circumferential direction such that the connection bars (6a) do not overlap each other along a thickness direction of the multi-layer substrate (2).