Abstract:
A circuit board is provided with an insulating substrate (1) and a circuit (3) formed on the insulating substrate (1). The circuit is provided with a plated base layer (4) whereupon a pattern is formed by irradiating a metal thin film (2) applied on a surface of the insulating substrate (1) with a laser beam (L) along the profile of the circuit (3) and partially removing the metal thin film (2) from the profile of the circuit (3). The circuit is also provided with a Cu-plated layer (5), an Ni-plated layer (6) and an Au-plated layer (7), which are formed by metal plating, on a surface of the plated base layer (4) in this order from the side of the plated base layer. Between the Ni-plated layer (6) and the Au-plated layer (7), a first intermediate plated layer (8) having a less noble metal than Au with respect to reference electrode potential is formed in contact with the Au-plated layer, and a second intermediate plated layer (9) having a more noble metal than the metal in the first intermediate plated layer with respect to the reference electrode potential is formed in contact with the first intermediate plated layer (8).
Abstract:
A printed wiring board, a printed board unit, and an electronic apparatus are provided to suppress warpage of the printed wiring board during heating in a reflow process by equalizing a ratio of an area of a surface of a substrate to an area of conductive material in an electronic component mounting region and a rear part of the mounting region. A printed wiring board(17) includes a substrate(28), a plurality of terminal pads, and a conductive film(39). The plurality of terminal pads are arranged on a first surface of the substrate for each electronic component, made of conductive material, and receives terminals of the electronic component. The conductive film is formed on a second surface opposite to the first surface which is the rear of an electronic component mounting region defined by an edge of arrangement of the terminal pads. The electronic component mounting region is determined according to a ratio of an area of a surface of the substrate to an area of the conductive material.
Abstract:
인터포저칩은절연막, 도전패턴들및 더미패턴을포함한다. 도전패턴들은상기절연막상에형성된다. 더미패턴은상기절연막상에형성되어상기절연막의휨을억제한다. 또한, 더미패턴은상기도전패턴들주위를따라형성된제 1 절연홈에의해상기도전패턴들로부터전기적으로절연된다. 또한, 더미패턴은제 2 절연홈과제 3 절연홈을가질수 있다. 따라서, 인터포저칩이휘어지는현상이억제된다. 또한, 파티클에의해서더미패턴을통해서도전패턴들이전기적으로쇼트되는현상이억제된다.
Abstract:
본 발명은 전도층의 한정된 면적을 기판 (1) 으로부터 부분적으로 떼어내기 위한 방법에 관한 것이다. 이를 위해, 제 1 방법 단계에서, 상기 면적은 우선 레이저 빔 (3) 을 이용해 영역 (4) 들로 나뉘어진다. 이를 위해, 레이저 빔 파라미터들은, 전도층을 아래에 있는 기판 (1) 이 프로세스 시 동시에 손상되지 않고 전도층만이 제거되도록 설정된다. 이를 위해, 이들 스트립 모양의 영역 (4) 들 각각은, 영역 (4) 들의 각각의 둘레를 따른 선 모양의 컷아웃부 (5) 의 도입에 의해 전도층의 서로 접해 있는 영역 (4) 들로부터 열적으로 절연된다. 이를 위해, 컷아웃부 (5) 들은 실질적으로 평행한 직선들로서 도입되며, 이 직선들은 도체 트랙 (2) 의 알려져 있는 경로에 의해 결정된 주축들 (X, Y) 과 함께 22.5°의 예각 ( ) 을 형성한다. 이러한 방식으로, 도체 트랙 (2) 에 대한 컷아웃부 (5) 들의 평행한 경로가 실제로 거의 있을 수 없고, 따라서 도체 트랙 (2) 에 이웃한 영역 (4) 을 떼어내는 프로세스 동안 도체 트랙 (2) 에 대해 평행한 열적 에너지 유입이 저지되며, 따라서 도체 트랙의 손상이 저지된다. 후속의 방법 단계에서, 영역 (4) 들은 동시에 일어나는 가열시 유체흐름을 이용해 제거되며, 컷아웃부 (5) 들에 대한 유체흐름의 방위는, 유체흐름이 컷아웃부 (5) 들에 평행하게도 부딪치지 않고 직각으로도 부딪치지 않도록 설정된다.
Abstract:
Die Erfindung betrifft ein Verfahren zum partiellen Lösen einer definierten Fläche einer leitfähigen Schicht von einem Substrat (1). Hierzu wird in einem ersten Verfahrensschritt mittels eines Laserstrahls (3) die Fläche zunächst in Bereiche (4) unterteilt. Hierzu werden die Laserstrahlparameter derart eingestellt, dass lediglich die leitfähige Schicht abgetragen wird, ohne dass dabei zugleich auch das darunterliegende, die leitfähige Schicht tragende Substrat (1) beeinträchtigt wird. Hierzu wird jeder dieser streifenförmigen Bereiche (4) gegenüber den angrenzenden Bereichen (4) der leitfähigen Schicht durch Einbringen einer linienförmigen Ausnehmung (5) entlang eines jeweiligen Umfangs der Bereiche (4) thermisch isoliert. Die Ausnehmungen (5) werden hierzu als im Wesentlichen parallele Geraden eingebracht, die mit den durch den bekannten Verlauf der Leiterbahn (2) bestimmten Hauptachsen (X, Y) einen spitzen Winkel (α) von 22,5° einschließen. Auf diese Weise ist in der Praxis ein paralleler Verlauf der Ausnehmu ngen (5) zu einer Leiterbahn (2) annähernd ausgeschlossen, sodass ein zu der Leiterbahn (2) paralleler thermischer Energieeintrag beim Ablösen des der Leiterbahn (2) benachbarten Bereichs (4) und so eine Schädigung derselben vermieden wird. In einem nachfolgenden Verfahrensschritt werden die Bereiche (4) bei gleichzeitiger Erwärmung mittels einer Fluidströmung entfernt, deren Orientierung relativ zu den Ausnehmungen (5) derart eingestellt wird, dass die Fluidströmung weder parallel noch orthogonal auf die Ausnehmungen (5) trifft.
Abstract:
An LED module includes an LED circuit board that is substantially fully metallized on two opposing surfaces for a number of closely-packed, high-output LEDs, along with an adjacent, parallel circuit board to carry high-frequency drive circuitry for the LEDs. The improved LED light source can provide longer LED lifespan, better wavelength stability, and higher density packaging than convention LED modules. An improvement of 10°C in heat dissipation has been demonstrated over conventional printed circuit boards, and operation at frequencies above 2 MHz for 12 closely-packed, high-output, through-hole mounted LEDs. Continuous temperature monitoring is provided using an on-board calibrated integrated circuit thermistor. In one embodiment, 12 LED's are integrated into a 35 x 30.5 x 30.5 mm aluminum housing for a module that provides 100 mW of filtered light with full-depth AC modulation at 2+ MHz.
Abstract:
The invention relates to a conductor carrier (2) comprising a base insulating film (5), a contact insulating film (3), and at least one first strip conductor and one second strip conductor (4, 6). The contact insulating film (3) comprises at least one first recess and one second recess (8, 10). The strip conductors are embedded between the two insulating films and each form a first overlapping region with the first or second recess (8, 10) of the contact insulating film (3). The conductor carrier (2) also comprises an insulating region (12) which separates the first strip conductor (4) from the second strip conductor (6) in an insulating manner due to the contact insulating film (3) being less raised than outside the insulating region (12), and extends between the first and second recess (8, 10) of the contact insulating film (3) in a meandering manner.