High-viscosity glue solution jet-dispensing quality improving method and dispensing device

Abstract

The invention provides a high-viscosity glue solution jet-dispensing quality improving method comprising the steps of cleaning a nozzle cavity of a valve seat and the inner wall of a valve body; plating a copper-containing microlayer on the inner wall of each of the nozzle cavity and the valve body; electrochemically plating the copper-containing microlayer to obtain a copper sulfide nanolayer; and carrying out ultra-thinning treatment on the copper sulfide nanolayer to improve the structural characteristic of the copper sulfide nanolayer. When a high-viscosity glue solution moves relative to the wall of a cavity body, a driving force in the flowing direction of the high-viscosity glue solution and a viscous resistance for resisting to the flow of the high-viscosity glue solution can be generated. Due to the adoption of the copper sulfide nanolayer, the wettability of each of the high-viscosity glue solution and the wall of the cavity body is changed, the contact area of the high-viscosity glue solution and the wall of the cavity body is reduced, and a driving resultant force in the flowing direction is increased under the condition that the driving force is unchanged, so that the directions of acting forces acting on the high-viscosity glue solution more consistently point to a jet orifice, and the high-viscosity glue solution is more easily jet in a high-speed and stable state. The invention also provides a dispensing device capable of realizing the same technical effect.

Description

technical field [0001] The present invention relates to the technical field of microelectronic packaging, and further relates to a method and a dispensing device for improving the quality of jet dispensing of high-viscosity glue. Background technique [0002] Liquid dispensing technology is a key technology in the field of microelectronic packaging. This technology accurately distributes fluid in a specific way, and can transfer fluid of ideal size to a suitable position on the workpiece, and construct points, lines, surfaces, etc. Various patterns in the form of mechanical or electrical connections between components. [0003] Jet dispensing does not rely on gravity or surface tension to separate the fluid, but by applying a sufficient force to the fluid, the fluid is automatically separated and sprayed, and the speed of dispensing is greatly improved. Due to its non-contact and high efficiency, jet dispensing technology has been more and more widely used. Because the the...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for improving the quality of high-viscosity glue injection dispensing and a glue dispensing device, which effectively increases the external force driving the flow of high-viscosity glue, so that the direction of the force acting on the hi

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