Non-contact screen printing method and non-contact screen printing equipment

Abstract

The invention discloses a non-contact screen printing method and non-contact screen printing equipment. The non-contact screen printing equipment comprises: a printing table of which the table top can be used for placing a printed object; a screen printing plate which is arranged between the printing table and a printing scraper and is used for printing ink on the printed object through the screen printing plate; and a printing head mechanism used for synchronously driving at least one printing scraper to move through the up and down movement of at least one driving device and pressing the printing scraper against the screen printing plate under the action of a constant pressure. The printing scraper prints at a constant pressure under the condition that the screen printing plate does not contact the printed object; and to a fragile, light and thin printed object such as a silicon chip, the method and the device can accurately control the thickness and uniformity of the printing ink so as to improve the printing stability and realize accurate printing.

Description

technical field [0001] The invention relates to a screen printing method and printing equipment. Background technique [0002] Generally, the printing technology of the screen printing machine has been widely used in various components of electronic products, such as liquid crystal glass, touch panels, silicon wafer wafers, etc. With the progress of the industry, the screen printing machine has been widely used in Printed use in high-tech products; please refer to figure 1 , figure 2 As shown, the printing method of the existing screen printing machine is to directly stick the screen cloth 401a of the screen 40a on the printing surface of the printed matter 70a, and press against the screen 40a with a scraping pressure by means of the printing scraper 30a. On the screen cloth 401a, the printing ink is scraped onto the printed matter 70a, and the printed matter 70a will bear the scraping pressure applied to the screen cloth 401a of the screen plate 40a by the printing scra...

AI Technical Summary

Problems solved by technology

[0002] Generally, the printing technology of the screen printing machine has been widely used in various components of electronic products, such as liquid crystal glass, touch panels, silicon wafer wafers, etc. With the progress of the industry, the screen printing machine has been widely used in Printed use in high-tech products; please refer to figure 1 , figure 2 As shown, the printing method of the existing screen printing machine is to directly stick the screen cloth 401a of the screen 40a on the printing surface of the printed matter 70a, and press against the screen 40a with a scraping pressure by means of the printing scraper 30a. On the screen cloth 401a, the printing ink is scraped onto the printed matter 70a, and the printed matter 70a will bear the scraping pressure applied to the screen cloth 401a of the screen plate 40a by the printing scraper 30a during each scraping process. This kind of printing method will easily cause the rupture of the printed matter 70a when printing the printed matter 70a that is small in size and brittle in material, resulting in material and money losses; The scraping pressure applied by the printing scraper 30a to the screen cloth 401a of the screen 40a is adjusted to a relatively small pressure, so that the amount of printing ink passing through the screen 40a is relatively reduced, and the scraper prints a thinner oil film thickness. The reduced pressure often makes the thickness of the oil film on the printed matter 70a uneven or too thin, resulting in a high failure rate of the printed matter 70a

However, for the printed matter 70a (such as a silicon wafer) with small volume and brittle material, the existing screen printing machine cannot or is difficult to take care of the above-mentioned multiple conditions at the same time;

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