摘要:
A lighting device includes a heatsink 70, a socket 10 and an LED module 60. The LED module 60 has a light emitting unit 62 in a central part of a top side of a metal base substrate 63 composed of an insulating plate and a metal plate. The LED module 60 is warped such that the central part protrudes on a heatsink 70 side, which is the side opposite to the light emitting unit 62 side. The LED module 60 is mounted on the heatsink 70 in a state of the surrounds of the light emitting unit 62 being pressed according to pressing units 14T, 14L, and 14D of the socket 10. Pressing the surrounds of the light emitting unit 62 against the heatsink 70 ensures that a central part of the warping of the LED module 60 contacts the heatsink 70.
摘要:
The specification describes PDA (SD/MMC) devices and PDA cards wherein the substrate on which the PDA components are mounted comprises two tiers. Components with a high profile are mounted on the lower tier, and devices with normal or low heights are mounted on the upper tier. The upper tier is contained in the portion of the card conforming to, for example, the 1.4 mm SDA standard thickness, while the lower tier is formed in the portion of the card that allows a larger thickness, for example SDA standard thickness 2.1 mm.
摘要:
A three-dimensionally formed circuit sheet (10, 21, 22) is provided. The sheet (10, 21, 22) is characterized by a resin film (1); and a circuit pattern (2) formed of an electrically conductive paste on the resin film (1). The electrically conductive paste contains, as a binder, a resin ink that is three-dimensionally formable. The resin film (1) and the circuit pattern (2) are formed in a three-dimensional shape. A method for manufacturing the three-dimensionally formed circuit sheet (10, 21, 22) is also provided. The method is characterized by forming a circuit pattern (2) on a resin film (1) using an electrically conductive paste by means of printing, wherein the electrically conductive paste contains a resin ink that is three-dimensionally formable; and press molding the resin film (1) including the circuit pattern (2) in a three-dimensional shape.
摘要:
It is an object of the present invention to provide a low-cost semiconductor device including a semiconductor chip mounted on both surfaces of a wiring substrate without degrading electric characteristics, a method for manufacturing an electronic equipment, an electronic equipment, and a portable information terminal. The semiconductor device includes projecting electrodes formed on one surface of a wiring substrate so as to have a prescribed height, a semiconductor chip having a thickness smaller than the height of the projecting electrodes, and an electronic component having a thickness larger than that of the semiconductor chip and mounted on the other surface of the wiring substrate so that the wiring substrate is warped to be recessed at the one surface. Thus, the rigidity as well as the spacing between the semiconductor chip and the mounting board are assured. Moreover, the semiconductor device having a logic LSI mounted on both surfaces of a wiring substrate is mounted on a mounting board in a housing with projecting electrodes having a prescribed height interposed therebetween, wherein the wiring substrate is warped to be recessed on the side having the projecting electrodes. Thus, the rigidity and the spacing are assured, whereby an electronic equipment and a portable information terminal are manufactured which cause no damage to the logic LSIs even when subjected to external pressure.
摘要:
Die Erfindung bezieht sich auf ein neuartiges Verfahren zum Herstellen eines gewölbten Metall-Keramik-Substrates mit einer von einer Keramikplatte gebildeten Keramikschicht, die an wenigstens einer Oberflächenseite mit einer Metallisierung versehen ist, welche auf die vorgewölbte Keramikplatte aufgebracht wird.
摘要:
In a method for fabricating a printed circuit board on a doubly contoured or hemispherical substrate such as a radome, a coherent light source is used to form a plurality of elements of a predetermined pattern on the surface of the substrate. The coherent light source preferably includes an excimer laser. The substrate includes a bottom layer and a metallized layer which is covered by a photoresist coating. The first element of the pattern is formed by directly imaging the element in the photoresist coating. The substrate is then displaced relative to the coherent light source until all the elements of the predetermined pattern are formed in the photoresist coating over the entire surface of the substrate. After the pattern is complete and the photoresist is developed, an etching technique is used to remove portions of the metallized layer from the substrate.
摘要:
A multilayered wiring board having a multilayered wiring structure. A first meshed wiring layer (1) having a plurality of holes formed therein and a second wiring layer (2) having a plurality of wirings are provided. The wirings of the second wiring layer wind up and down so as to partially sink in the holes formed in the first wiring layer. In another arrangement, the first wiring layer has a plurality of protrusions protruding into spaces between the adjacent ones of the wirings of the second wiring layer. The crosstalks between the wirings are reduced.
摘要:
A plurality of circuit component carrier packages (71) having the same size and shape are stacked adjacent one to another with the faces (72, 74) thereof in contact to form a carrier package assembly (40) in the form of a prismatic or cylindrical solid. Each carrier package houses one or more electrical circuit components (110) and is provided at portions of the faces thereof with electrical contacts (84, 86) which cooperate with similarly located contacts on the faces of adjacent carrier packages to electrically interconnect the circuit components. The carrier package assembly is usable with a flexible, printed circuit board (50) having on one side thereof an array of contact sites (52) selectively interconnected by printed routing traces (54). Electrical contacts on the peripheral surfaces of the carrier packages are coupled with the circuit components housed therein and engage the contact sites on the circuit board when it is wrapped around the carrier package assembly.
摘要:
A highly accurate circuit pattern (14) in intimate contiguous relationship with a curved plastic body (12) and a method of manufacture thereof. In accordance with the present invention, circuit pattern (14) is detachably fixed to a flexible substrate (16) and is placed into a mold (20). A molding compound (22) is then forced into the mold pressing the circuit against the mold wall and filling all of the mold voids. The molded product is thereafter removed from the mold. The flexible substrate (16), on which the metallic circuit is printed, is removed from the molded product leaving the metallic circuit pattern (14) imbedded into the molded product.
摘要:
Plusieurs boîtiers porteurs (71) de composants de circuit en forme de plaque sont empilés adjacents entre eux avec leurs faces plates (72, 74) en contact pour former un ensemble de boîtiers porteurs (40). Chaque boîtier porteur loge un ou plusieurs composants de circuit électrique (110) couplés à des contacts électriques (84, 86) sur les faces plates et à des contacts électriques (98) ou des broches droites (424, 436) prévues sur les côtés. Ces broches coopèrent avec celles des boîtiers porteurs adjacents pour effectuer une connexion électrique avec les composants des circuits. Une plaquette à circuit imprimé flexible (50) ayant un réseau de sites de contact (52) interconnectés sélectivement par des traces imprimées de routage (54) entoure l'assemblage de boîtier porteur. Les extrémités de l'assemblage de boîtier porteur sont pourvues de blocs connecteurs de support et d'interconnexion électrique (22, 16). Plusieurs assemblages de boîtier porteur peuvent être interconnectés directement, par emboîtement, ou par l'intermédiaire de structures intermédiaires de connexion.