An electrostatic focusing electrofluid jet printing device and method

Abstract

The invention belongs to the technical field of micro-nano manufacturing, and discloses an electrostatic focusing electro-fluid jet printing device and method. The device comprises a base, an adjusting cylinder, a nozzle and an electrostatic lens, wherein the adjusting cylinder comprises a cylinder body and a platform arranged below the cylinder body, the base is arranged in the adjusting cylinderand is fixedly connected with the adjusting cylinder through a fastening screw, moreover, a through hole is formed in the base in the vertical direction, the nozzle comprises a pinpoint and a nozzlebody for fixing the pinpoint, the nozzle body is arranged in the through hole and is fixedly connected with the base, and the electric lens comprises an upper electrode ring, an insulating ring and alower electrode ring which are sequentially arranged. The invention provides an electrostatic focusing electro-fluid jet printing method. According to the electrostatic focusing electro-fluid jet printing device and method, the electrostatic lens is integrated into an electro-fluid jet printing spray head so that higher-precision and higher-resolution printing can be achieved, moreover, printing on a insulation base plate or a free-form surface can be simultaneously achieved, the operation is simple and convenient, the printing resolution is high, and the adaptability is high.

Description

technical field [0001] The invention belongs to the technical field related to micro-nano manufacturing, and more specifically relates to an electrostatic focusing electrofluid jet printing device and method. Background technique [0002] Complex micro-nano functional structures can be used in many fields, such as flexible displays, printing / organic / flexible electronic devices, multifunctional sensors, etc. Therefore, their preparation processes have attracted much attention in recent years. Inkjet printing, as a non-contact patterning process, can deposit micro-scale structures on substrates, and compared with photolithographic patterning processes, it has the advantages of no mask, material saving, environmental friendliness, and convenient operation, so it is considered to be the The best solution. However, traditional inkjet printing technologies (such as piezoelectric printing and thermal foam printing) usually have a minimum resolution of 20 μm, and the viscosity of t...

AI Technical Summary

Problems solved by technology

However, the vast majority of current electrojet printing nozzles use a high-voltage electric field formed between the metal nozzle and the collecting substrate to complete the electrojet printing process. The collecting substrate must be made of conductive material and the surface of the collecting substrate must be uniform to ensure a stable and uniform high-voltage electric field. Formed, this mode of electrofluid jet printing cannot be printed on insulating substrates or substrates with free-form surfaces

[0004] The existing technology also proposes a structural method that uses a ring-shaped ground electrode placed under the nozzle to reduce the influence of the substrate effect on printing, but the ring-shaped ground electrode will generate an electric field force pointing to the electrode ring, and the printed jet is affected by the electric field force Will shift or even print onto the ground electrode ring

Therefore, there is an urgent need to propose a new jet printing method in this field, which can achieve higher precision and higher resolution printing, and overcome the problem that conventional electrofluid jet printing cannot print on insulating substrates or substrates with free-form surfaces.

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