Abstract:
The present invention increases real estate by providing non-annular lands which do not completely encircle the through holes. The non-annular lands are non-annular, that is they do not extend 360.degree. around the through hole. Preferably the non-annular lands contact no more than one side of the through holes thereby providing real estate not otherwise available using conventional lands. The present invention also relates to a method for producing such Non-annular lands.
Abstract:
비아(106)가 통상적으로 그에 연결된 신호 라인(102, 128)보다 낮은 임피던스를 가진다. 임피던스 부정합을 가져오는 노이즈 및 반사된 신호는 회로가 원하는 것보다 훨씬 더 낮은 주파수에서 동작될 것을 필요로 할 수 있다. 실시예는, 비아(106)의 각각의 단부에 분할 링 공진기(104, 112, 120, 126)를 추가함으로써 더 높은 임피던스를 갖는 비아(106)를 제공하는 것에 의해, 회로에서의 임피던스 부정합을 방지하고 기술 분야의 진보를 달성한다.
Abstract:
비아(106)가 통상적으로 그에 연결된 신호 라인(102, 128)보다 낮은 임피던스를 가진다. 임피던스 부정합을 가져오는 노이즈 및 반사된 신호는 회로가 원하는 것보다 훨씬 더 낮은 주파수에서 동작될 것을 필요로 할 수 있다. 실시예는, 비아(106)의 각각의 단부에 분할 링 공진기(104, 112, 120, 126)를 추가함으로써 더 높은 임피던스를 갖는 비아(106)를 제공하는 것에 의해, 회로에서의 임피던스 부정합을 방지하고 기술 분야의 진보를 달성한다.
Abstract:
PURPOSE: A landless printed circuit board is provided to implement a high density wiring without a separate bump pad by directly interlinking a conductive bump and a circuit. CONSTITUTION: A landless printed circuit board comprises an insulating layer(100), a circuit pattern(200), and a conductive bump(300). The circuit pattern is formed in both sides of the insulating layer. The circuit pattern is formed by using a single method among a tenting, a M-SAP(Modified Semi-Additive Process), a SAP and an ink jet printing method. The conductive bump is formed within the insulating layer. The conductive bump electrically interlinks a circuit pattern in both sides of the insulating layer. The conductive bump is directly connected to the circuit pattern without the bump pad.
Abstract:
본 발명은 금이 가거나 갈라지지 아니하는 반도체 장치용 테이프 캐리어와 이 테이프 캐리어를 사용한 반도체 장치 및 이들의 제조방법에 관한 것으로, 가요성을 갖는 절연테이프(1)의 양면에 금속박을 형성하고, 보호막을 형성하며 에칭가공을 한 다음 보호막을 제거함으로써 한쪽 면에는 반도체 칩을 탑재하기 위한 금속 배선층(2)을 형성하고, 다른 한쪽 면에는 소망의 위치에 절연테이프를 노출시키며, 상기 금속 배선층(2)은 수지로 이루어지는 보호막으로 보호하고, 상기 절연테이프(1)의 노출부분을 에칭가공함으로써 비어홀(3)을 소망의 위치에 형성케하고, 이 비어홀(3)과 비어홀(3)의 외주연부 중 일부에 수지의 보호막을 형성하여 에칭가공을 함으로써 보호막으로부터 노출된 부분의 금속박을 제거하여 구리링(6)을 형성하고, 절연테이프(1)의 양면에 형성된 보호막을 제거함을 특징으로 하는 반도체 장치용 테이프캐리어와 이 테이프캐리어를 사용한 반도체 장치를 제공하는 것으로, 본 발명은 반도체 장치와 프린트 기판의 열팽창 계수의 차이에 의해 테이프캐리어와 땜납볼과의 접합부위에 발생하는 열응력 때문에 금이 가거나 갈라지는 것을 방지할 수 있는 효과를 가진다.
Abstract:
An electronic apparatus includes, for example, a circuit board with an electronic component and a piezoelectric element, a reference potential pattern that gives a reference potential to at least one of the electronic component and the piezoelectric element, and a solder land connected to the reference potential pattern. On the circuit board, the electronic component is located on a downstream side in a transport direction of the circuit board during mounting of the piezoelectric element and the electronic component on the solder land, and the piezoelectric element is located on an upstream side in the transport direction.
Abstract:
PROBLEM TO BE SOLVED: To protect a semiconductor component with an inexpensive and simple method from a discharge generated from a piezoelectric element owing to the pyroelectric effect in a process of a flow soldering. SOLUTION: An electronic device includes, for instance, a printed circuit board soldered with the use of a solder jet flow, a semiconductor component provided on the printed circuit board, and a piezoelectric element provided on the printed circuit board. Further, the electronic device includes a reference potential pattern and a land. The reference potential pattern imparts a reference potential to at least one of the semiconductor component and the piezoelectric element. The land is provided between the semiconductor component and the piezoelectric element, connected to the reference potential pattern, and formed by exposing the wiring part from a solder resist layer of the printed-wiring board. This causes the discharge current generated in the piezoelectric element owing to the pyroelectric effect in a process of the flow soldering using the solder jet flow to flow on a discharge channel formed by the piezoelectric, the land, the reference potential pattern, and the solder jet flow. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed circuit board capable of certainly preventing the damage of a conductor pattern caused by a terminal. SOLUTION: A printed circuit board 1a includes a substrate 2, a conductor pattern 6, a through-hole 4, and a non-conductor portion 5. A lead line 22b of a resistor 22 mounted on a printed circuit board 1a is inserted in the through-hole 4. The lead line 22b is bent so that the line protrudes toward the surface 2a of the substrate 2 and the line comes near the surface 2a of the substrate 2. The resistor 22 is attached to the printed circuit board 1a. The non-conductor portion 5 is formed substantially into the shape of a fan which expands with the through-hole 4 at the center as it is closer to the leading end of the lead line 22b. The bent lead line 22b is arranged in the non-conductor portion 5. The non-conductor portion 5 prevents the lead line 22b from coming into contact with the conductor pattern 6 and damaging the conductor pattern 6. COPYRIGHT: (C)2009,JPO&INPIT