Abstract:
PURPOSE: A printed circuit board is provided to ensures an overall depth that is as low as possible when loaded with standard electronic components. CONSTITUTION: In a printed circuit board for soldering and/or loading electronic components on one or both sides, the individual components have at least one electrically conducting contact element for insertion into at least one corresponding contact opening(12) penetrating through the printed circuit board(10). The contact opening(12) of the printed circuit board(10) is of a slit-shaped form.
Abstract:
PURPOSE: A PCB(Printed Circuit Board) lead pin for a CPU(Central Processing Unit) and a method for coupling the same are provided to reduce an error rate and a manufacturing process by preventing separation of a pin from the PCB in a coupling process. CONSTITUTION: A plurality of lead pins(2) are inserted into a jig(1). At this time, a plurality of apertures(4) are formed on the jig(1). The number of apertures(4) corresponds to the number of lead pins(2). The lead pins(2) are inserted into the apertures(4) of the jig(1). The lead pin(2) has a body part(5) and a projection(6). A diameter of the projection(6) is larger than the diameter of the body part(5). A PCB(3) is stacked on the jig(1) after the lead pin(2) is inserted into the jig(1). The lead pin(2) is adhered on the PCB(3). At this time, the lead pin(2) is inserted into an aperture(7) formed on the PCB(3). The jig(1) is separated from the PCB(3) after the lead pin(2) is adhered on the PCB(3).
Abstract:
PURPOSE: An IC card and a circuit board used for the same are provided to reduce manufacturing procedures and cost by reducing the number of metallic layers constituting the IC card. CONSTITUTION: A circuit board constituting an IC module(110) of an IC card, comprises a board body including a bonding surface where an IC chip(112) is attached, and a contact surface(115b) opposed to the bonding surface, and which electrically connects the IC chip to an external source. The bonding surface of the circuit board has a plurality of input/output bonding holes and a plurality of antenna via holes for selectively exposing the contact surface. The contact surface has a plurality of metallic layer patterns. The metallic layer pattern has a plurality of input/output metallic patterns connected to the input/output bonding holes, and antenna line patterns connected to the antenna via holes.
Abstract:
PURPOSE: A junction structure between PCB and flexible printed circuit cable is provided to improve junction efficiency by preventing non-soldered area and thermal loss during junction. CONSTITUTION: A junction structure comprises a PCB having a plurality of patterns formed at an end of the PCB, and dummy patterns(120) formed at both ends of the string of patterns, wherein dummy patterns are not connected to an internal circuit; and a flexible printed circuit cable(200) having a plurality of patterns(210) formed to be longer than the patterns formed at the PCB, and dummy patterns(220) formed at both ends of the string of patterns, wherein dummy pattern are not connected to the internal circuit. The junction surface between the PCB and the flexible printed circuit cable has at least one reference hole(230).
Abstract:
An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising (a) a main portion which comprises a main part of the first electrode, a main part of the second electrode, and a main part of the resistive element; and (b) a first connection leg which extends away from the main portion and which comprises a first leg part of the first electrode which is integral with the main part of the first electrode, and a first leg part of the resistive element which is integral with the main part of the resistive element. Such devices can be secured to circuit boards in a variety of ways, and to elastically deformed terminals.
Abstract:
저위스커성, 저응착마모성및 고내구성을갖는전자부품용금속재료, 그것을사용한커넥터단자, 커넥터및 전자부품을제공한다. 전자부품용금속재료는, 기재와, 기재상에형성된, Ni, Cr, Mn, Fe, Co 및 Cu 로이루어지는군인 A 구성원소군에서선택된 1 종또는 2 종이상으로구성된하층과, 하층상에형성된, Ag, Au, Pt, Pd, Ru, Rh, Os 및 Ir 로이루어지는군인 B 구성원소군에서선택된 1 종또는 2 종류이상으로구성된중층과, 중층상에형성된, Ag, Au, Pt, Pd, Ru, Rh, Os 및 Ir 로이루어지는군인 B 구성원소군에서선택된 1 종또는 2 종류이상과, Sn 및 In 으로이루어지는군인 C 구성원소군에서선택된 1 종또는 2 종의합금으로구성된상층과, 상층상에형성된 Sn 및 In 으로이루어지는군인 C 구성원소군에서선택된 1 종또는 2 종으로구성된최표층을구비하고, 하층의두께가 0.05 ㎛이상 5.00 ㎛미만이고, 중층의두께가 0.01 ㎛이상 0.50 ㎛미만이고, 상층의두께가 0.50 ㎛미만이고, 최표층의두께가 0.005 ㎛이상 0.30 ㎛미만이다.
Abstract:
실시 예에 개시된 발광 소자는, 복수의 리드 전극; 상기 복수의 리드 전극에 연결되는 복수의 전극을 갖는 발광 칩; 상기 발광 칩과 상기 복수의 리드 전극 사이에 채워지는 접착 부재; 및 상기 회로 기판의 리드 전극과 상기 발광 칩의 전극을 서로 연결해 주는 연결 전극을 포함하며, 상기 접착 부재는 상기 금속 파우더와 수지 조성물을 포함하며, 상기 연결 전극은 상기 접착 부재의 금속 파우더와 동일한 물질을 포함하며, 상기 수지 조성물은 열 경화성 수지, 활성화제, 경화제, 겔화제 및 할로겐화 화합물을 포함하며, 상기 열 경화성 수지와 경화제의 당량은 0.6~0.9 비율로 혼합되며, 상기 활성화제는 상기 수지 조성물의 1wt% 내지 10wt% 범위를 포함하며, 상기 겔화제는 상기 수지 조성물의 0.1wt% 내지 10wt% 범위를 포함한다.