A method, system and printer for volume control in the whole process of droplet jet fusion

Abstract

The invention belongs to the field of ink-jet printing related equipment, and discloses a liquid drop jet and fusion whole-process volume control method and system and a device. According to the method, closed-loop feedback control of a volume of a single liquid drop and a multi-liquid-drop mixed volume compensation control method are combined with a fused liquid drop total volume control method,the printing data of nozzles of a spray head are controlled, so that measuring and controlling of the volumes of the liquid drops in the whole jetting printing process are realized, and the liquid drop volume precision is effectively improved; and on the basis of controlling the volume of the single liquid drop, control and compensation of the total volume on a substrate after the multiple liquiddrops are deposited and fused are realized through a multi-pass jetting printing mode. According to the method, the pattern area, where ink is unevenly deposited, on the substrate is compensated through the multi-pass printing mode while the volume precision of the single liquid drop is improved, so that direct control on the thickness and uniformity of a film where patterns are printed is realized, the consistency of the total volume of the ink deposited on the target area on the substrate is ensured, and accurate control on the printing patterns is realized.

Description

technical field [0001] The invention belongs to the field of equipment related to inkjet printing, and more specifically relates to a volume control method for the whole process of droplet jet fusion. Background technique [0002] Compared with traditional flexible electronics manufacturing processes such as lithography and screen printing, inkjet printing technology has the advantages of low requirements on equipment environment, high production efficiency, and low manufacturing cost. It has become one of the main development trends of flexible electronics manufacturing in the future. At present, it has been applied in the fields of OLED display screen manufacturing, epidermal electronics, thin-film solar cells, etc., but most of them are still in the laboratory research stage, and have not yet been truly applied to industrial production. [0003] In the field of flexible electronics manufacturing, one of the important indicators of current process objects is film thickness...

AI Technical Summary

Problems solved by technology

However, further studies have shown that the technologies involved in the existing patents still have the following deficiencies: On the one hand, they all observe and control the volume of a single droplet ejected in the trial printing stage, but do not control the volume of multiple drops in the formal printing process. The deposition process of droplets on the same position on the substrate and the total volume of ink after fusion are paid attention to, and the latter two are one of the key factors that directly affect the thickness of the film; on the other hand, because the total volume of ink after fusion is not measurement, so there is a lack of a control method to compensate for it, so the process object yield of printing manufacturing is low

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