Adjusting mechanism, print head module and ink-jet printing device

Abstract

The invention provides an adjusting mechanism, a print head module and an ink-jet printing device. The ink-jet printing device comprises a print head. The adjusting mechanism comprises a electrifyingchannel assembly, an deflection channel assembly, a recycling assembly and a control assembly, wherein the electrifying channel assembly is connected with a liquid outlet of a print head and used forelectrifying liquid drops flowing out from the liquid outlet, the deflection channel assembly is arranged at the end, far away from the print head, of the electrifying channel assembly and communicates with the electrifying channel assembly, the deflection channel assembly is used for exerting a deflection electric field on the electrified liquid drops to enable the electrified liquid drops passing through the deflection channel assembly to generate deflection, the recycling assembly is arranged below the deflection channel assembly and used for recycling the deflected liquid drops, the recycling assembly deviates from the liquid outlet of the deflection channel assembly for a certain distance so as to avoid hindering liquid drops not undergoing deflection, and the control assembly is electrically connected with the electrifying channel assembly and the deflection channel assembly and used for controlling the electrifying channel assembly and the deflection channel assembly to be powered on or off.

Description

Technical field [0001] The invention relates to the field of display technology, in particular to an adjustment mechanism, a print head module and an inkjet printing device. Background technique [0002] Organic electroluminescent devices (OLEDs) have become the most potential new display devices in recent years due to their self-luminous, all-solid-state, and high-contrast advantages. Using vapor deposition equipment to prepare OLED devices is currently the mainstream method of production, but the disadvantages of low vapor deposition process material utilization and poor uniformity have been lacking effective solutions. The solution method to prepare OLED film shows obvious advantages due to its high material utilization rate and low equipment cost. [0003] The solution process includes spin coating, printing, printing, etc., in which the solution containing luminescent (or functional) materials is dropped on a predetermined position in the form of tiny droplets (skin upgrade),...

AI Technical Summary

Problems solved by technology

The preparation of OLED devices by evaporation equipment is the mainstream method of production at present, but the disadvantages of low utilization rate and poor uniformity of evaporation process materials have been lacking effective solutions

[0009] However, due to the current ink characteristics, when each nozzle starts printing again after a pause for a period of time, the drop speed of the spit out drops will be reduced to a certain extent, and then gradually return to the original speed.

The occurrence of this situation will cause the slower droplets to fall outside the predetermined landing point, resulting in printing deviation and printing defects.

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