Lg Innotek Co., Ltd.

Samsung Engineering Co., Ltd.

Tae Woog Kang

Jun Soo Park

Jin Pil Kim

Jin Hee Jeon

Se Woong Na

Jung Eun Han

Ki Yong Lee

Gyun Ho Ha

Geun Yong Choi

Hyung Jong Kim

Ji Yoon Hyun

Dae Seong Kim

Sung Mo Park

Byueong Kook Cheo

Jong In Yoon

Jae Hyoun Yoo

Nae Hyuck Lee

Hu Jung Nam

A circuit board according to an embodiment comprises: an insulating layer including first to third regions; an outer layer circuit pattern disposed on the upper surface of the first to third regions of the insulating layer; and a solder resist including a first part disposed in the first region of the insulating layer, a second part disposed in the second region, and a third part disposed in the third region, wherein the outer layer circuit pattern has a first height, the third part of the solder resist is disposed on the upper surface of the outer layer circuit pattern to have a second height, the first region includes a first sub-region and a second sub-region, the first part includes a first sub-part disposed in the first sub-region and a second sub-part disposed in the second sub-region, the upper surface of the first sub-part is located to be higher than the upper surface of the outer layer circuit pattern and lower than the upper surface of the third part, the upper surface of the second sub-part is located to be lower than the upper surface of the outer layer circuit pattern, and the surface roughness of the third part of the solder resist is different from the surface roughness of the first part of the solder resist.

Circuit board

A method of automatically generating AutoCAD drawings includes: generating a data sheet by using only input data which is necessary for generating drawings of a heat exchanger and obtained from strength calculation data provided by a strength calculation program; loading the data sheet by a loading unit; and generating AutoCAD drawings of the heat exchanger by activating an automatic AutoCAD drawing generation interface by a user's selection, the automatic AutoCAD drawing generation interface being activatable only after the data sheet may be loaded, wherein the input data includes both machine data and thermal data.

Device and method for automatically generating AutoCAD drawings, and non-transitory computer-readable medium recorded thereon computer program therefor

Disclosed are a printed circuit board and a method for manufacturing the same. The method for manufacturing the printed circuit board includes forming a base circuit board including a cavity circuit pattern in a cavity region on upper and lower portions of a substrate and internal circuit layers outside the cavity region, forming a cavity separation layer on the cavity circuit pattern, forming at least one pair of an insulating layer and a circuit layer on the base circuit board, cutting the insulating layer and the cavity separation layer provided on an etch stop pattern by controlling a focal length of a laser beam such that the laser beam reaches a surface of the base circuit board, and removing the insulating layer by separating the cavity separation layer to form the cavity. The cavity separation layer is formed on the cavity circuit pattern, and the resultant structure is cut to the cavity separation layer by using a laser so that the insulating layer is separated. Accordingly, the insulating layer in the cavity is easily removed.

Printed circuit board and method for manufacturing the same

Growing community of inventors

Seoul, South Korea

Jun Soo Park