Manufacturing method of ink-jet printing digital micro-fluidic chip

A technology of inkjet printing and digital microflow, which is applied to chemical instruments and methods, printing, and laboratory containers, etc. It can solve the problems of easy damage, weak physical strength of PI film, and difficult processing technology, and achieve low cost, Improve sensitivity and overcome the effect of easy breakage

Inactive Publication Date: 2021-08-27
SHANGHAI PUBLISHING & PRINTING COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to avoid the short-circuit problem of the multi-layer electrode wire layer, PI film is additionally used as the insulating layer to separate the electrode and the wire. However, due to the weak physical strength of the PI film, it is extremely easy to be damaged, which will also bring difficulties to the processing technology.

Method used

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  • Manufacturing method of ink-jet printing digital micro-fluidic chip
  • Manufacturing method of ink-jet printing digital micro-fluidic chip

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Embodiment Construction

[0024] In order to make the technical means and effects realized by the present invention easy to understand, the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

[0025]

[0026] In this embodiment, the basic function of the digital microfluidic chip is to control a small amount of liquid droplets. The amount of liquid droplets needs to be controlled precisely, and there are various limitations. In order to increase the flexibility and control functions of the chip, it is necessary to control the liquid The control accuracy and breadth of the drop volume (droplet types of different sizes) are improved. Since the size of the driving droplet is determined by the size of the driving electrode and the gap between the plates, this embodiment forms an inkjet micro-precision circuit on the dielectric layer, avoiding the concave-convex wave scale of the dielectric layer / hydrophobic layer on the electrode layer with d...

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Abstract

The invention provides a manufacturing method of an ink-jet printing digital micro-fluidic chip, which comprises the following steps of: 1, designing an electrode circuit pattern to be printed, and preparing a thin film serving as a dielectric layer; 2, according to the electrode circuit pattern, using an ink-jet printer for carrying out ink-jet printing of nanoscale conductive ink on one face of the dielectric layer so as to carry out single-layer circuit printing or complex circuit printing; and 3, coating the other surface of the dielectric layer with a hydrophobic layer. According to the manufacturing method of the ink-jet printing digital micro-fluidic chip, high-precision resolution ink layer control is carried out by utilizing ink jet of an ink-jet printer, the problems that steps are generated in an electrode gap and liquid is blocked are solved, the problem of separation of an electrode and a lead is solved, and the influence of short circuit in a complex circuit design is effectively avoided. The ink-jet printing process is relatively simple, low in cost and high in precision, is suitable for repeated test requirements of the digital micro-fluidic chip in the research field, can greatly improve the working precision and efficiency of the digital micro-fluidic chip, and has practicability.

Description

technical field [0001] The invention belongs to the intersection field of digital microfluidic technology and printing technology, and in particular relates to a method for manufacturing an inkjet printed digital microfluidic chip. Background technique [0002] Micro-total analysis system, also known as lab-on-a-chip, mainly integrates the sample preparation, reaction, separation, detection and other operations involved in routine experiments on a micron-scale chip. An emerging research field emerging from the intersection of disciplines, biomedicine and other disciplines. Microfluidics is an important supporting technology in the micro-total analysis system. The microfluidic chip is prepared on the basis of micro total analysis system (MEMS) technology to realize the miniaturization, integration, low cost and high efficiency of the analysis system. [0003] Microfluidic chip is an emerging concept in the field of microfluidics. In a broad sense, it refers to a series of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/00B41J2/01B41J2/07
CPCB01L3/502707B41J2/01B41J2/07
Inventor 周颖梅
Owner SHANGHAI PUBLISHING & PRINTING COLLEGE
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