A method for controlling an ejector is disclosed, wherein the ejector comprises an actuator arrangement configured to eject a droplet of viscous medium onto a substrate, and wherein the droplet forms part of a sequence of a plurality of droplets. The method comprises obtaining a control parameter for controlling the operation of the actuator arrangement, and operating the actuator arrangement, using the control parameter, in order to eject the droplet. The obtained control parameter is based on at least one of: a time period between the droplet and a previous droplet in the sequence, a difference in target size of the droplet and a size of the previous droplet in the sequence, and the droplets position in the sequence.

Described herein are triboelectric energy generators that generally include a first flexible layer having a first electron donating material coated on at least a first surface and an electron accepting material coated over the first electron donating material, and a second flexible layer having a second electron donating material coated on at least a first surface. The first and second layers are positioned adjacent each other with their first surfaces facing inward toward each other and separated by a gap distance. An electric potential is generated upon movement between the first and second flexible layers, such as at least alternating contact and no-contact between the first and second flexible layers. The electron donating material may be provided by a particle-free conductive ink.

A three-dimensional (3D) metal object manufacturing apparatus selects operational parameters for operation of the printer to form vias in substrates. The apparatus identifies the bulk metal being melted for ejection and uses this identification data to select the operational parameters. The apparatus identifies the via holes in the substrate and positions an ejector opposite the via holes to eject drops of melted bulk metal toward the via holes to fill the via holes.

Disclosed is a method of printing an ultranarrow line of a functional material. The method entails providing a substrate having an interlayer on the substrate and printing the ultranarrow line by depositing ink on the interlayer of the substrate, the ink comprising the functional material and a solvent mixture that partially dissolves the interlayer on the substrate to cause the ink to shrink and sink into the interlayer on the substrate thereby reducing a width of the line.

A photoinitiator selected from the group consisting of an acylphosphine oxide, a α-hydroxy-ketone and a α-amino-ketone, characterized in that the photoinitiator includes at least one aliphatic disulfide as functional group.

The disclosure relates to systems, methods and devices for mitigating warpage in printed circuit boards (PCBs) high-frequency connect PCBs (HFCPs), or additively manufactured electronics (AME) with surface mounted chip packages (SMT) during reflow processing for soldering the SMT to the PCB, HFCP, or AME. More specifically, the disclosure is directed to the fabrication of a surface-complementary dielectric mask, or reflow compression mask to substantially encapsulate the SMT, and mitigate warpage, and/or protect the PCB, HFCP, or AME during shipment and further manipulation or processing.

An additive printing method depositing a functional print pattern on a surface of a 3D object, an associated computer program, and a computer-readable medium storing the program. The method comprises as steps (i) providing the object on a planar surface; (ii) providing a print head having print nozzles defining a plane non-parallel to the planar surface; (iii) generating 3D geometrical surface data of an exposed surface of the object on the planar surface; (iv) generating 2D geometrical surface data of the exposed surface on the basis of the 3D geometrical surface data; (v) determining an amount of printing fluid to be discharged at a discharge time from each of the print nozzles; (vi) generating a relative movement between the object and the print head; and (vii) printing a print pattern on at least one portion of the exposed surface during the relative movement. A step of correcting data is included.

Described herein is an inkjet ink composition for printing conductive traces. The inkjet ink composition comprises: polymer-capped metal nanoparticles; a first hydroxy compound, which is a monohydroxyl-substituted hydrocarbon comprising 1 to 6 carbon atoms; a second hydroxy compound, which is selected from a polyol, a monohydric ether and mixtures thereof; and water; wherein the weight ratio of water to first hydroxyl compound is in the range of 1:0.5 to 1:1.5; and wherein the weight ratio of water to second hydroxy compound is in the range of 1:0.5 to 1:1.5. Also described herein are a method of producing the inkjet ink composition and a method of printing conductive traces.

The invention concerns a display device including a transfer substrate (1010) including electric connection elements (L1, L2, C1, C2, P1, P2, P3, P4), and a plurality of semiconductor chips, wherein the transfer substrate (1010) includes an insulating plate, the electric connection elements of the substrate being formed by printing, on a surface of said plate, of a first conductive level, followed by an insulating level, followed by a second conductive level, the electric connection elements of the substrate including: a plurality of first conductive tracks (L1, L2) formed in the first conductive level; a plurality of second conductive tracks (C1, C2) formed in the second conductive level; and for each chip of the device, a plurality of electric connection areas (P1, P2, P3, P4) respectively connected to connection terminals of the chip, said areas being all formed in the second conductive level.

The present invention provides an artificial intelligence-assisted printed electronics self-guided optimization method, which integrates machine learning technology with printed electronics. According to variables that impact printing quality of a microelectronic printer, a user sets up experimental groups, prints samples with the microelectronic printer according to parameters in the experiment groups, characterizes printing effects, and evaluates the printing quality. The characterization result is analyzed by machine learning, and printing parameters that correspond to a best printing effect are obtained; then, the parameters are fed back to the user, and the user configures the printer according to the fed-back parameters, thereby improving printing quality. By using the present invention, optimal printing parameters can be obtained by simply setting up a few simple experiments according to a number of factors that impact printing effects, which reduces the time for a printer user to test out printing effects in an early stage, and provides a good practicability.