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Film-forming method, film-forming device and control method capable of controlling coffee ring effect

A technology of a film forming device and a control method, which is applied in the directions of printing devices, typewriters, printing, etc., can solve the problems of not being able to detect in real time.

Active Publication Date: 2021-04-09
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the existing technology has studied the factors affecting the "coffee ring effect" in the film formation process, it cannot be detected in real time during the deposition process, and the film formation of the "coffee ring effect" can be suppressed or utilized according to actual requirements. Films that make complex graphics

Method used

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  • Film-forming method, film-forming device and control method capable of controlling coffee ring effect
  • Film-forming method, film-forming device and control method capable of controlling coffee ring effect
  • Film-forming method, film-forming device and control method capable of controlling coffee ring effect

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] What the present invention discloses is a film forming method that can control the coffee ring effect. Through image acquisition devices such as microscopes and high-speed cameras (or video cameras), the process of liquid droplet deposition and film formation is monitored in real time, and then according to the monitored images, by adjusting the temperature Or pH value and other parameters that can affect the "coffee ring effect", control the "coffee ring effect", and complete a uniform deposition film.

[0036] For the situation where it is necessary to obtain the influence parameters of the "coffee ring effect" in advance, the present invention can adopt the following film formation method: monitor the droplet deposition film formation process in real time through a microscope and a high-speed camera (or video camera), and the...

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Abstract

The invention discloses a film-forming method, a film-forming device and a control method capable of controlling the coffee ring effect. It is used to monitor the process of droplet deposition and film-forming in real time by setting an image acquisition device. By observing the coffee ring to form an image, combined with " In the deposition process, according to the experimental requirements, suppress or utilize the "coffee ring effect" to form a film, and finally achieve the purpose of real-time monitoring and transformation, and make a thin film with complex graphics. It is also possible to obtain the optimal film-forming parameters of a certain material through the above-mentioned method, and then use the parameters to form a film, and finally produce a film with uniform and complex patterns.

Description

technical field [0001] The invention relates to the field of droplet spraying supporting devices, in particular to a film forming method capable of controlling the coffee ring effect, a film forming device and a control method for the film forming device. Background technique [0002] After inkjet printing, the uniform deposition of ink functional solutes is very important for the formation of high-precision patterns and the performance and application of the fabricated devices. In the process of inkjet printing, not only the parameters need to be adjusted to control the steady state of droplet ejection, but also the shape of droplet deposition needs to be controlled. In 1997, Deegan proposed that when a drop of coffee or tea drips on the tabletop, its particulate matter will leave a dyed ring on the tabletop, and the color of the ring is uneven, and the edge part is larger than The phenomenon that is deeper in the middle is called the "coffee ring effect". [0003] In the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J3/44B41J3/46B41J29/393
CPCB41J3/445B41J3/46B41J29/393
Inventor 谢丹李波舒霞云莫靖宇许克宇陈文奂吴常健
Owner XIAMEN UNIV OF TECH