JPS63135779U

JPS63135779U -

Info

Publication number: JPS63135779U
Application number: JP1987028614U
Authority: JP
Priority date: 1987-02-27
Filing date: 1987-02-27
Publication date: 1988-09-06

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示すバツクボー
ド５０の要部拡大図で、Ａは正面図、ＢはＡのＢ
―Ｂ断面図である。第２図は従来のバツクボード
を収容するネストの構成斜視図、第３図はバツク
ボード５０の詳細を示す斜視図、第４図はバツク
ボード５０の要部拡大図である。３０……プリント基板、５０……バツクボード
、５１……コネクタ、５２……多層プリント基板
、５４……グランドパターン、５５……信号線。 FIG. 1 is an enlarged view of the main parts of a backboard 50 showing an embodiment of the present invention, where A is a front view and B is a B of A.
-B sectional view. FIG. 2 is a perspective view of the structure of a nest that accommodates a conventional backboard, FIG. 3 is a perspective view showing details of the backboard 50, and FIG. 4 is an enlarged view of the main parts of the backboard 50. 30...Printed circuit board, 50...Backboard, 51...Connector, 52...Multilayer printed circuit board, 54...Ground pattern, 55...Signal line.

Claims

[Claims for Utility Model Registration] A connector to which a printed circuit board is connected which has a plurality of rows of terminal portions having a predetermined pitch P in a plurality of examples, and a connector having a number of layers corresponding to the number of columns of this connector, and a signal of each layer. A backboard consisting of a multilayer printed circuit board in which the lines connect terminals in a predetermined row, a ground plane that is connected to a ground plane that is parallel to the printed pattern of this multilayer printed circuit board, and a ground pattern that is provided between the rows of signal lines in each layer. The signal line connecting the terminals is shifted by approximately half a pitch (P/2) between adjacent layers, and the signal line is sandwiched between the ground patterns of the adjacent layer in the interlayer direction. Backboard.