Circuit board with EMI suppression

A microstrip-type of circuit board is used as a source driver for a liquid crystal display. Video signal buses extend in a longitudinal direction on the board. Along a centerline of the longitudinal direction of the board, there are provided through vias to which a signal from a tab driver is propag...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	IKAMI SHINICHI
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS PRINTED CIRCUITS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A microstrip-type of circuit board is used as a source driver for a liquid crystal display. Video signal buses extend in a longitudinal direction on the board. Along a centerline of the longitudinal direction of the board, there are provided through vias to which a signal from a tab driver is propagated. Each video signal bus has a plurality of through vias disposed symmetrically with respect to the though vias disposed along the centerline of the longitudinal direction of the board, with tab leads electrically connected to the symmetrically disposed through via. The substantial symmetry of the circuit board provides the advantage of substantially suppressing EMI.