Abstract: A dispensing system includes a frame, a support coupled to the frame, a dispensing unit configured to dispense viscous material, and a gantry assembly coupled to the frame. The gantry assembly includes a gantry configured to support the dispensing unit and to move the dispensing unit in x-axis, y-axis and z-axis directions and a tilt and rotate subassembly configured to tilt and rotate the dispensing unit. The dispensing system further includes a controller configured to control dispensing unit and the gantry assembly to perform a dispense operation on the electronic substrate. The controller is configured to control the dispensing unit to dispense material from the nozzle of the dispensing unit at a flow rate configured to deposit a desired amount or density of material on the electronic substrate along a three-dimensional path.

Abstract: A dispensing system includes a frame, a support coupled to the frame, a dispensing unit configured to dispense viscous material, and a gantry assembly coupled to the frame. The gantry assembly includes a gantry configured to support the dispensing unit and to move the dispensing unit in x-axis, y-axis and z-axis directions and a tilt and rotate subassembly configured to tilt and rotate the dispensing unit. The dispensing system further includes a controller configured to control dispensing unit and the gantry assembly to perform a dispense operation on the electronic substrate. The controller is configured to simultaneously coordinate the movement of the gantry assembly and the tilt and rotate subassembly to position and orient the nozzle of the dispensing unit a predetermined distance and orientation from the electronic substrate while dispensing material along a three-dimensional path.

Abstract: A dispensing system includes a frame, a support coupled to the frame, a dispensing unit configured to dispense viscous material, and a gantry assembly coupled to the frame. The gantry assembly includes a gantry configured to support the dispensing unit and to move the dispensing unit in x-axis, y-axis and z-axis directions and a tilt and rotate subassembly configured to tilt and rotate the dispensing unit. The dispensing system further includes a controller configured to control dispensing unit and the gantry assembly to perform a dispense operation on the electronic substrate. The controller is configured to simultaneously coordinate the movement of the gantry assembly and the tilt and rotate subassembly to position and orient the nozzle of the dispensing unit a predetermined distance and orientation from the electronic substrate while dispensing material along a three-dimensional path.

Abstract: A dispensing system includes a frame, a support coupled to the frame, a dispensing unit configured to dispense viscous material, and a gantry assembly coupled to the frame. The gantry assembly includes a gantry configured to support the dispensing unit and to move the dispensing unit in x-axis, y-axis and z-axis directions and a tilt and rotate subassembly configured to tilt and rotate the dispensing unit. The dispensing system further includes a controller configured to control dispensing unit and the gantry assembly to perform a dispense operation on the electronic substrate. The controller is configured to control the dispensing unit to dispense material from the nozzle of the dispensing unit at a flow rate configured to deposit a desired amount or density of material on the electronic substrate along a three-dimensional path.

Abstract: A dispensing unit of a dispensing system configured to dispense viscous material on an electronic substrate includes a support housing and a fluidic housing supported by the support housing. The fluidic housing includes a chamber and an inlet configured to deliver viscous material to the chamber from a material feed tube. The dispensing unit further includes a nozzle assembly releasably secured to the housing and configured to close an end of the fluidic housing. The dispensing unit further includes a reciprocating piston disposed partially within the chamber of the fluidic housing. The piston is configured to dispense viscous material from the nozzle assembly. The dispensing unit further includes a fixed flexible diaphragm seal configured to be secured to the fluidic housing and to the piston.

Abstract: A method is used to identify and compensate for errors created by changes in the relative positions of a deposition unit and a vision system of a dispenser. The method includes calibrating the vision system, dispensing a pattern of features over a working area, moving the vision system over a deposition location to locate a deposition, obtaining an image of the deposition, tagging data associated with the image, calculating a relative distance between the deposition unit and the vision system, storing correction data with spatial location in a file for later use, and using the stored data to make small corrections prior to dispensing additional material.

Abstract: A method is used to identify and compensate for errors created by changes in the relative positions of a deposition unit and a vision system of a dispenser. The method includes calibrating the vision system, dispensing a pattern of features over a working area, moving the vision system over a deposition location to locate a deposition, obtaining an image of the deposition, tagging data associated with the image, calculating a relative distance between the deposition unit and the vision system, storing correction data with spatial location in a file for later use, and using the stored data to make small corrections prior to dispensing additional material.

Abstract: A method is used to identify and compensate for errors created by changes in the relative positions of a deposition unit and a vision system of a dispenser. The method includes calibrating the vision system, dispensing a pattern of features over a working area, moving the vision system over a deposition location to locate a deposition, obtaining an image of the deposition, tagging data associated with the image, calculating a relative distance between the deposition unit and the vision system, storing correction data with spatial location in a file for later use, and using the stored data to make small corrections prior to dispensing additional material.

Abstract: A method is used to identify and compensate for errors created by changes in the relative positions of a deposition unit and a vision system of a dispenser. The method includes calibrating the vision system, dispensing a pattern of features over a working area, moving the vision system over a deposition location to locate a deposition, obtaining an image of the deposition, tagging data associated with the image, calculating a relative distance between the deposition unit and the vision system, storing correction data with spatial location in a file for later use, and using the stored data to make small corrections prior to dispensing additional material.

Abstract: A method is used to identify and compensate for errors created by changes in the relative positions of a deposition unit and a vision system of a dispenser. The method includes calibrating the vision system, dispensing a pattern of features over a working area, moving the vision system over a deposition location to locate a deposition, obtaining an image of the deposition, tagging data associated with the image, calculating a relative distance between the deposition unit and the vision system, storing correction data with spatial location in a file for later use, and using the stored data to make small corrections prior to dispensing additional material.

Abstract: A method is used to identify and compensate for errors created by changes in the relative positions of a deposition unit and a vision system of a dispenser. The method includes calibrating the vision system, dispensing a pattern of features over a working area, moving the vision system over a deposition location to locate a deposition, obtaining an image of the deposition, tagging data associated with the image, calculating a relative distance between the deposition unit and the vision system, storing correction data with spatial location in a file for later use, and using the stored data to make small corrections prior to dispensing additional material.

Abstract: A method for cleaning a nozzle of a material deposition system configured to deposit material on an electronic substrate includes: performing a deposition operation with a material deposition system configured to position an electronic substrate under a deposition head movable by a gantry, to supply material to a chamber of the deposition head, to extend a piston of the deposition head from the chamber, the needle terminating in a needle orifice, and to push a volume of material out of the chamber by an actuator of the deposition head to form a desired volume of material at the needle orifice that is deposited on the electronic substrate; and cleaning the needle orifice with air directed to the needle orifice.

Abstract: A method of calibrating a dispenser of the type having a material dispensing unit that is configured to dispense material on a substrate includes providing a weigh scale having a plate configured to receive material dispensed on the plate, dispensing one or more patterns of material on the plate; weighing the amount of material dispensed on the plate, and comparing the weighed amount of material to a designated amount of material. The act of dispensing one or more patterns of material replicates at least a portion of patterns of material dispensed on the substrate during a dispensing operation. A controller for performing the method is further disclosed.

Abstract: A material deposition system includes a frame, a support coupled to the frame to support an electronic substrate during a deposit operation, a gantry coupled to the frame, and a deposition head coupled to the gantry. The deposition head is movable over the support by movement of the gantry. The deposition head includes a chamber to hold material, an actuator to push a volume of material out of the chamber, a needle extending from the chamber and terminating in a needle orifice, and at least two air jets located on opposite sides of the needle orifice. A desired volume of material is formed at the needle orifice in response to the actuator, and each of the at least two air jets produce a timed pulse of air to create a micro-droplet from the desired volume and to accelerate the micro-droplet to high velocity.

Abstract: A material deposition system includes a frame, a support coupled to the frame to support an electronic substrate during a deposit operation, a gantry coupled to the frame, and a deposition head coupled to the gantry. The deposition head is movable over the support by movement of the gantry. The deposition head includes a chamber to hold material, an actuator to push a volume of material out of the chamber, a needle extending from the chamber and terminating in a needle orifice, and at least two air jets located on opposite sides of the needle orifice. A desired volume of material is formed at the needle orifice in response to the actuator, and each of the at least two air jets produce a timed pulse of air to create a micro-droplet from the desired volume and to accelerate the micro-droplet to high velocity.

Abstract: A material deposition system includes a frame, a support coupled to the frame to support an electronic substrate during a deposit operation, a gantry coupled to the frame, and a deposition head coupled to the gantry. The deposition head is movable over the support by movement of the gantry. The deposition head includes a chamber to hold material, an actuator to push a volume of material out of the chamber, a needle extending from the chamber and terminating in a needle orifice, and at least two air jets located on opposite sides of the needle orifice. A desired volume of material is formed at the needle orifice in response to the actuator, and each of the at least two air jets produce a timed pulse of air to create a micro-droplet from the desired volume and to accelerate the micro-droplet to high velocity.

Abstract: A method of calibrating a dispenser of the type having a material dispensing unit that is configured to dispense material on a substrate includes providing a weigh scale having a plate configured to receive material dispensed on the plate, dispensing one or more patterns of material on the plate; weighing the amount of material dispensed on the plate, and comparing the weighed amount of material to a designated amount of material. The act of dispensing one or more patterns of material replicates at least a portion of patterns of material dispensed on the substrate during a dispensing operation. A controller for performing the method is further disclosed.

Abstract: A method for cleaning a nozzle of a material deposition system configured to deposit material on an electronic substrate includes: performing a deposition operation with a material deposition system configured to position an electronic substrate under a deposition head movable by a gantry, to supply material to a chamber of the deposition head, to extend a piston of the deposition head from the chamber, the needle terminating in a needle orifice, and to push a volume of material out of the chamber by an actuator of the deposition head to form a desired volume of material at the needle orifice that is deposited on the electronic substrate; and cleaning the needle orifice with air directed to the needle orifice.

Abstract: A material deposition system includes a frame, a support coupled to the frame to support an electronic substrate during a deposit operation, a gantry coupled to the frame, and a deposition head coupled to the gantry. The deposition head is movable over the support by movement of the gantry. The deposition head includes a chamber to hold material, an actuator to push a volume of material out of the chamber, a needle extending from the chamber and terminating in a needle orifice, and at least two air jets located on opposite sides of the needle orifice. A desired volume of material is formed at the needle orifice in response to the actuator, and each of the at least two air jets produce a timed pulse of air to create a micro-droplet from the desired volume and to accelerate the micro-droplet to high velocity.

Abstract: A plasma jet device which comprises an anode electrode and a cathode electrode to provide an ionized gas column therebetween, the anode and cathode electrodes positioned such that their axes, if extended, would intersect at an angle, the ionized gas characterized by an inverted V form and a reaction zone in the region of intersection of the extended axes, and an external means to introduce a material to be observed directly into the reaction zone.