An electrohydrodynamic printing device for a curved substrate and a control method thereof

Abstract

The invention discloses an electrohydrodynamic printing device of a curved substrate and a control method thereof, which comprises a frame; a printing module; a printing platform; a high-voltage power supply module; , the printing platform is provided with a printing surface and a Y-axis sliding mechanism, and the printing surface is set on the Y-axis sliding mechanism to realize the translational movement of the printing surface along the Y-axis direction, and simultaneously along the X and Z axes respectively. Circumferential rotation, so that the printing surface can rotate around the A and Z axes respectively. The present invention uses the electrohydrodynamic printing control method of the curved substrate to drive the X, Y and Z axes to realize translational movement and the A and C axes respectively. The rotational motion drives the printing platform to realize the spatial compound motion, so as to print the electrohydrodynamic pattern on the curved substrate.

Description

technical field [0001] The invention relates to the technical field of electrohydrodynamic printing, in particular to an electrohydrodynamic printing device for a curved substrate and a control method thereof. Background technique [0002] Electrohydrodynamic printing technology is to apply a voltage between the substrate and the nozzle. Under the action of the induced electric field force, the solution flows out of the nozzle and forms a meniscus at the nozzle. As the voltage gradually increases, the charge accumulates on the meniscus. The Coulomb force between the charges causes tangential stress on the surface of the liquid. Under the action of the shear force, the meniscus forms a Taylor cone at the top of the nozzle. As the electric field increases, the Coulomb force overcomes the surface tension of the liquid, and the liquid flows from the top of the Taylor cone. Shot, forming a droplet or jet. Electrohydrodynamic printing technology has received extensive attention i...

AI Technical Summary

Problems solved by technology

[0004] The electrohydrodynamic printing process is easily affected by parameters such as the moving speed of the moving platform, the applied voltage, and the spray height, which affect the precise formation of the electrohydrodynamic printing pattern, affect the morphology of functional devices, and thus affect their performance.

At present, the electrohydrodynamic printing equipment can only realize the mobile printing of the X, Y and Z axes, which is only suitable for the printing of flat substrates. For the electrohydrodynamic printing of curved substrates, due to the complex shape of curved substrates, only It is difficult to accurately control the jet height and the normal direction of the printing position through the movement of the Z axis, which affects the precise shape of the electrohydrodynamic printing thickness and pattern on the curved substrate

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