US 12,414,241 B2
Transferring viscous materials
Rob Jacob Hendriks, Eindhoven (NL); and Fabien Bernard Jacques Bruning, Eindhoven (NL)
Assigned to Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage (NL)
Appl. No. 17/923,258
Filed by Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage (NL)
PCT Filed May 12, 2021, PCT No. PCT/NL2021/050309
§ 371(c)(1), (2) Date Nov. 4, 2022,
PCT Pub. No. WO2021/230746, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 20174175 (EP), filed on May 12, 2020.
Prior Publication US 2023/0240017 A1, Jul. 27, 2023
Int. Cl. H05K 3/12 (2006.01); H05B 1/02 (2006.01); H05B 3/22 (2006.01)
CPC H05K 3/1258 (2013.01) [H05B 1/0244 (2013.01); H05B 3/22 (2013.01); H05B 2203/005 (2013.01); H05B 2203/019 (2013.01); H05K 2203/1105 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A transfer device for transferring of a functional material, onto a receiving substrate, the device comprising:
a plate having a donor surface that includes at least one donor area that is formed as a cavity in the donor surface and that is filled with the functional material, the functional material being one selected from the group consisting of: an electric conductor, an electric insulator, a thermal conductor and a thermal insulator, and wherein the functional material has a viscosity of at least 50 Pa·s and a material composition that, when sufficiently heated, generates a gas at an interface between the donor area surface in the donor area and the functional material, to transfer the functional material from the at least one donor area by the gas generation onto the receiving substrate;
a plurality of individually addressable resistive heater elements, each of the individually addressable resistive heater elements being in thermal contact with a respective zone of the cavity forming the at least one donor area; and
control circuitry configured to supply an electric power having a respective time dependent magnitude to respective ones of the plurality of individually addressable resistive heater elements,
wherein the resistive heater elements are arranged in a heater matrix comprising:
a first set of powerlines arranged in a first planar direction of the plate, and
a second set of powerlines arranged in a second planar direction transverse to the first planar direction; and
wherein respective heater elements are electrically connected to respective pairs of a powerline of the first set and a powerline of the second set.