Simultaneously Writing Bus Bars And Gridlines For Solar Cell
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United States of America Patent
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Issued Date -
Jun 10, 2010
app pub date -
Dec 10, 2008
filing date -
Dec 10, 2008
priority date (Note) -
Abandoned
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Abstract
A method for efficiently producing closely-spaced parallel gridlines and perpendicular bus bar structures on a substrate during a single pass of a multi-nozzle printhead assembly over the substrate. A first section of the parallel gridlines is printed adjacent to one edge of the substrate while moving the printhead assembly in a first direction. The printhead assembly is then reciprocated in a second direction (X-axis) orthogonal to the first direction, whereby the extruded material forms a bus bar structure extending perpendicular to the gridlines. Movement of the printhead assembly in the first direction is then resumed to form a second section of the gridlines. The second direction reciprocation process is repeated for each desired bus bar structure. The entire gridline/bus bar printing process is performed without halting the extrusion of material (i.e., using a continuous bead).
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