Abstract: An additive manufacturing system includes a platen having a top surface, a support structure, a powder dispenser coupled to the support structure and positioned above the platen and configured to deliver a powder in a linear region that extends along a first axis, a gas dispenser coupled to the support structure in a fixed position relative to the powder dispenser and having an outlet to deliver a gas across the outermost layer of feed material, an energy source configured to selectively fused the layer of powder, and an actuator coupled to the support to move the support with the powder dispenser and the gas dispenser together along a second axis perpendicular to the first axis and parallel to the top surface such that the linear region and the outlet sweep along the second axis to deposit the powder in a swath over the platen and deliver the gas.

Abstract: An additive manufacturing apparatus includes a platform, a dispenser to deliver a plurality of layers of feed material, one or more light sources configured to emit a first light beam and a second light beam, and a polygon beam scanner including a rotatable mirror having a plurality of reflective facets to redirect the first light beam and the second light beam toward the platform to deliver energy to an uppermost layer of feed material. The mirror is positioned and rotatable such that motion of each facet of the plurality of reflective facets causes the first light beam to sweep along a first path on the uppermost layer and causes the second light beam to sweep along the first path following the first light beam.

Abstract: Embodiments of the present disclosure relate to advanced polishing pads with tunable chemical, material and structural properties, and new methods of manufacturing the same. According to one or more embodiments of the disclosure, it has been discovered that a polishing pad with improved properties may be produced by an additive manufacturing process, such as a three-dimensional (3D) printing process. Embodiments of the present disclosure thus may provide an advanced polishing pad that has discrete features and geometries, formed from at least two different materials that include functional polymers, functional oligomers, reactive diluents, and curing agents. For example, the advanced polishing pad may be formed from a plurality of polymeric layers, by the automated sequential deposition of at least one resin precursor composition followed by at least one curing step, wherein each layer may represent at least one polymer composition, and/or regions of different compositions.

Abstract: A module for an additive manufacturing system includes a frame, a dispenser configured to deliver a layer of particles over a platen, an energy source to generate a beam to fuse the particles, and a metrology system having a first sensor to measure a property of the surface of layer before being fused and a second sensor to measure a property of the layer after being fused. The dispenser, first sensor, energy source and second sensor are positioned on the frame in order along a first axis, and the dispenser, first sensor, energy source and second sensor are fixed to the frame such that the frame, dispenser, first sensor, energy source and second sensor can be mounted and dismounted as a single unit from a movable support.

Abstract: A dispensing system for an additive manufacturing includes a powder source that contains powder to form an object, and an array of nozzles positioned at a base of the powder source over a top surface of a platen where the object is to be formed. The powder flows from the powder source through the nozzles to the top surface. A respective powder wheel in each nozzle controls a flow rate of the powder. Each wheel has multiple troughs on surface of the wheel. When a motor rotates the wheel, the troughs transport the powder through the nozzle. The rotation speed of the wheel controls the flow rate. For solid parts of the object, the wheel rotates and allows the powder to be deposited on the top surface. For empty parts of the object, the wheel remains stationary to prevent the powder from flowing to the surface.

Abstract: An additive manufacturing apparatus includes a platform, a dispenser to dispense a plurality of layers of feed material on a top surface of the platform, and an energy delivery system. The energy delivery system has one or more light sources configured to emit a first light beam and a second light beam, and one or more reflective members each having reflective facets to redirect the first light beam or the second light beam toward an uppermost layer of feed material to deliver energy to the uppermost layer. The one or more reflective members are each rotatable such that motion of each sequential facet of the reflective facets of each of the one or more reflective members sweeps the first light beam along a first path on the uppermost layer or sweeps the second light beam along a second path on the uppermost layer.

Abstract: A formulation, system, and method for additive manufacturing of a polishing pad. The formulation includes monomer, dispersant, and nanoparticles. A method of preparing the formulation includes adding a dispersant that is a polyester derivative to monomer, adding metal-oxide nanoparticles to the monomer, and subjecting the monomer having the nanoparticles and dispersant to sonication to disperse the nanoparticles in the monomer.

Abstract: An additive manufacturing apparatus includes a platform, a dispenser to dispense a plurality of layers of feed material on a top surface of the platform, and an energy delivery assembly. The energy delivery assembly includes a light source to emit one or more light beams, a first reflective member having a plurality of reflective facets, and at least one second reflective member. The first reflective member is rotatable such that sequential facets sweep the light beam sequentially along a path on the uppermost layer. The at least one second reflective member is movable such that the at least one second reflective surface is repositionable to receive at least one of the at least one light beam and redirect the at least one of at least one light beam along a two-dimensional path on the uppermost layer.

Abstract: An apparatus for positioning micro-devices on a substrate includes one or more supports to hold a donor substrate and a destination substrate, an adhesive dispenser to deliver adhesive on micro-devices on the donor substrate, a transfer device including a transfer surface to transfer the micro-devices from the donor substrate to the destination substrate, and a controller. The controller is configured to operate the adhesive dispenser to selectively dispense the adhesive onto selected micro-devices on the donor substrate based on a desired spacing of the selected micro-devices on the destination substrate.

Abstract: Additive manufacturing includes successively forming a plurality of layers on a support. Depositing a layer from the plurality of layers includes dispensing first particles, selectively dispensing second particles in selected regions corresponding to a surface of the object, and fusing at least a portion of the layer. The layer has the first particles throughout and the second particles in the selected regions. Alternatively or in addition, forming the plurality of layers includes depositing multiple groups of layers. Depositing a group of layers includes, for each layer in the group of layers dispensing a feed material to provide the layer, and after dispensing the feed material and before dispensing a subsequent layer fusing a selected portion of the layer. After all layers in the group of layers are dispensed, a volume of the group of layers that extends through all the layers in the group of layers is fused.

Abstract: A method and apparatus for forming an optical stack having uniform and accurate layers is provided. A processing tool used to form the optical stack comprises, within an enclosed environment, a first transfer chamber, an on-board metrology unit, and a second transfer chamber. A first plurality of processing chambers is coupled to the first transfer chamber or the second transfer chamber. The on-board metrology unit is disposed between the first transfer chamber and the second transfer chamber. The on-board metrology unit is configured to measure one or more optical properties of the individual layers of the optical stack without exposing the layers to an ambient environment.

Abstract: An additive manufacturing apparatus includes a dispensing system positionable over a platen to deliver a powder, an actuator to move the dispensing system along a scan axis, and an energy source to fuse a portion of the powder. The dispensing system has a hopper to hold the powder and a dispenser. The dispenser includes a channel extending along a longitudinal axis from a proximal end to a distal end. The proximal end of the channel of the dispenser is configured to receive the powder from the powder source. A powder conveyor is positioned within the channel to move the powder from the proximal end along a length of the channel, and a plurality of apertures are arranged along the longitudinal axis of the channel. The dispenser is configured such that flow of powder through each aperture is independently controllable.

Abstract: A method for printing on a substrate includes printing a support structure by printing a liquid precursor material and curing the liquid precursor material, printing one or more alignment markers by printing the liquid precursor material outside the support structure and curing the liquid precursor material, positioning a substrate within the support structure, performing a registration of the substrate using the one or more alignment markers, and printing one or more device structures on the substrate while registered by printing and curing the liquid precursor material.

Abstract: A method for printing on a substrate includes printing a support structure by printing a liquid precursor material and curing the liquid precursor material, positioning a substrate within the support structure, printing one or more anchors on the substrate and the support structure by printing and curing the liquid precursor material to secure the substrate to the support structure, and printing one or more device structures on the substrate while anchored by printing and curing the liquid precursor material.

Abstract: A method of printing structures on a reconstructed wafer includes positioning a plurality of semiconductor dies on a support substrate, anchoring the plurality of semiconductor dies to the support substrate by printing a plurality of anchors that extend across edges of the semiconductor dies onto the support substrate and thus form a reconstructed wafer, and printing one or more device structures on the pluralities of semiconductor dies while anchored on the support substrate. The printing operations include ejecting droplets of a liquid precursor material and curing the liquid precursor material.

Abstract: Embodiments of the present disclosure relate to advanced polishing pads with tunable chemical, material and structural properties, and new methods of manufacturing the same. According to one or more embodiments of the disclosure, it has been discovered that a polishing pad with improved properties may be produced by an additive manufacturing process, such as a three-dimensional (3D) printing process. Embodiments of the present disclosure thus may provide an advanced polishing pad that has discrete features and geometries, formed from at least two different materials that include functional polymers, functional oligomers, reactive diluents, and curing agents. For example, the advanced polishing pad may be formed from a plurality of polymeric layers, by the automated sequential deposition of at least one resin precursor composition followed by at least one curing step, wherein each layer may represent at least one polymer composition, and/or regions of different compositions.

Abstract: Additive manufacturing includes successively forming a plurality of layers on a support. Depositing a layer from the plurality of layers includes dispensing first particles, selectively dispensing second particles in selected regions corresponding to a surface of the object, and fusing at least a portion of the layer. The layer has the first particles throughout and the second particles in the selected regions. Alternatively or in addition, forming the plurality of layers includes depositing multiple groups of layers. Depositing a group of layers includes, for each layer in the group of layers dispensing a feed material to provide the layer, and after dispensing the feed material and before dispensing a subsequent layer fusing a selected portion of the layer. After all layers in the group of layers are dispensed, a volume of the group of layers that extends through all the layers in the group of layers is fused.

Abstract: A photocurable composition includes a nanomaterial selected to emit radiation in a first wavelength band in the visible light range in response to absorption of radiation in a second wavelength band in the UV or visible light range, one or more (meth)acrylate monomers, and a photoinitiator that initiates polymerization of the one or more (meth)acrylate monomers in response to absorption of radiation in the second wavelength band. The second wavelength band is different than the first wavelength band. A light-emitting device includes a plurality of light-emitting diodes and the cured photocurable composition in contact with a surface through which radiation in a first wavelength band in the UV or visible light range is emitted from each of the light-emitting diodes.

Abstract: A method of fabricating a multi-color display includes dispensing a photo-curable fluid over a display having an array of LEDs disposed below a cover layer. The cover has an outer surface with a plurality of recesses, and the photo-curable fluid fills the recesses. The photo-curable fluid includes a color conversion agent. A plurality of LEDs in the array are activated to illuminate and cure the photo-curable fluid to form a color conversion layer in the recesses over the activated LEDs. This layer will convert light from these LEDs to light of a first color. An uncured remainder of the photo-curable fluid is removed. Then the process is repeated with a different photo-curable fluid having a different color conversion agent and a different plurality of LEDs. This forms a second color conversion layer in different plurality of recesses to convert light from these LEDs to light of a second color.

Abstract: A method of fabricating a multi-color display includes dispensing a photo-curable fluid that includes a color conversion agent over a display having a backplane and an array of light emitting diodes electrically integrated with backplane circuitry of the backplane, activating a plurality of light emitting diodes in the array of light emitting diodes to illuminate and cure the first photo-curable fluid to form a color conversion layer over each of the first plurality of light emitting diodes to convert light from the plurality of light emitting diodes to light of a first color, and removing an uncured remainder of the first photo-curable fluid. This process is repeated with a fluid having different color conversion components for another color.