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    • 10. 发明公开
    • Directional extruded bead control
    • 定向挤压球控制
    • EP2184766A3
    • 2012-01-25
    • EP09173586.0
    • 2009-10-21
    • SolarWorld Innovations GmbH
    • Fork, David K.Solberg, Scott E.
    • H01L21/67B29C47/12B81C99/00
    • H01L21/6715B29C47/0002B29C47/0016B29C47/026B29C47/062B29C47/084B29C47/128B29L2031/06B81B2207/07B81C99/0015
    • The present invention refers to a micro-extrusion system including a printhead assembly and a material feed system for extruding one or more materials out of extrusion nozzles defined in the printhead assembly. The extruded materials form parallel beads on an upper surface of a target substrate. According to the invention, the printhead assembly comprises a first plate structure, a second plate structure and a layered nozzle structure sandwiched between the first and second plate structures. The layered nozzle structure includes a top nozzle plate including a first front edge and defining a first inlet port and a nozzle outlet plate including a second front edge and defining an elongated nozzle channel extending in a predetermined first flow direction from a closed end to an opening defined through said second front edge, wherein the top nozzle plate is mounted on the nozzle outlet plate to form an extrusion nozzle, where a portion of the top nozzle plate forms an upper wall of the extrusion nozzle, opposing edges of the elongated channel form side walls of the extrusion nozzle, and the opening formed in the second front edge defines an outlet orifice of the extrusion nozzle, wherein the first inlet port is aligned with the closed end of the elongated channel, whereby extrusion material forced through the first inlet port flows in the first flow direction along the extrusion nozzle and out of said outlet orifice to form said bead, and wherein said layered nozzle structure comprises means for biasing the bead toward the target substrate.