Micro-fluidic chip containing microfluid in self-discipline movement, manufacturing method, and liquid injecting device

Abstract

The invention discloses a micro-fluidic chip containing microfluid in self-discipline movement. The micro-fluidic chip comprises a chip substrate and a cover plate; a micro channel with a V-shaped cross section is arranged in the chip substrate, the depth of the inlet of the micro channel is 10 to 800 micrometers, the depth of the outlet of the micro channel is 20 to 800 micrometers, at the same time, the depth of the micro channel increases from the inlet to the outlet, the changing rule of the depth is accord with a formula: [delta]H=[delta]Ltan[beta], wherein in the formula, [delta]H represents the increased amount of depth of the micro channel, [delta]L represents the increased amount of the length of the micro channel, and 0 degree<beta<10 degrees. The provided micro-fluidic chip has the advantages of high precision in moulding, higher quality of internal wall surface of the micro channel, more easiness for fluid flowing, simpler technology, higher production efficiency, and lower cost. The invention further provides a manufacturing method of the micro-fluidic chip and a liquid injecting device for the micro-fluidic chip. The injecting device has the following advantages: the encapsulation is tight, the technology is simple, and the encapsulation efficiency is high.

Description

technical field [0001] The invention relates to a microfluidic chip, in particular to a microfluidic chip with autonomous microfluidic movement, a manufacturing method, and a liquid injection device. Background technique [0002] Microfluidic chip is a highly integrated product of micro-electromechanical processing technology, test analysis technology, digital information technology, etc. It integrates biochemical analysis, separation, medical virus, gene detection and other functions into one chip. With the development of information technology, using microfluidic chip detection technology, remote diagnosis and telemedicine can be realized. The microfluidic chip uses its internal microchannels to separate, mix, and react test fluids and sample fluids according to different requirements to achieve its functions. Generally, the width of microchannels is as small as 50 microns, and the depth 10 microns. At present, microfluidic channels on the surface of microfluidic chip su...

AI Technical Summary

Problems solved by technology

The fabrication, packaging and driving method of the microfluidic chip described in the present invention can effectively solve the problem that the surface quality of the flow channel in the current microfluidic chip is not high enough, the packaging is prone to liquid leakage, the equipment is expensive and costly, the fluid drive is not flexible enough, and the equipment is complicated, etc. question

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