PCI pin digital microfluidic chip based on double-layer pcb and its method

A technology of digital microfluidics and PCB boards, which is applied in fluid controllers, chemical instruments and methods, and laboratory containers. It can solve problems such as poor electrical connections, difficult chip fixing, and normal use of equipment, and achieve reliable mechanical Fixation, increase density, reduce crowding effect
CN107983422BActive Publication Date: 2020-12-29DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2020-12-29

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Abstract

The invention relates to a PCI (peripheral component interconnect) pin digital microfluidic chip based on double PCB layers. The PCI pin digital microfluidic chip based on the double PCB layers is characterized by comprising an upper electrode plate, a lower electrode plate and a PCI slot, wherein both the upper electrode plate and the lower electrode plate are PCBs; and gold finger pins are arranged at edges of the upper electrode plate and the lower electrode plate and inserted into the PCI slot. The method comprises the following steps: liquid drops are added dropwise to electrodes on the lower electrode plate, and a liquid column is formed between the upper electrode plate and the lower electrode plate; a control system applies liquid drop driving voltage to electric pins connected with adjacent electrodes of the liquid drops through the PCI slot, and the liquid drops are driven to move to the adjacent electrodes. With adoption of the double-PCB structure, leads are arranged on theback side of the chip, so that interference of electrified leads in movement of the liquid drops is avoided, and occupation of limit front space of the chip by the leads is reduced to the greatest extent, so that density of working electrodes of the digital microfluidic chip is increased greatly.
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Description

technical field

[0001] The invention relates to electrical engineering and microfluidic chip technology, and in particular provides a PCI pin digital microfluidic chip based on a double-layer PCB and a working method thereof. Background technique

[0002] The droplet microfluidic chip is an important branch of the field of microfluidic chips. Two immiscible liquids, one of which is used as the continuous phase, and the other is used as the dispersed phase. The dispersed phase is in the form of tiny volume units. Dispersed in the continuous phase at an extremely fast speed, forming droplets that can be used as a carrying tool for microbiological and chemical samples. The droplet microfluidic chip can realize the interaction and chemical reaction between microbiological and chemical samples by carrying the mutual fusion, splitting, retransportation and refusion of different sample droplets.

[0003] The basic principle of the digital microfluidic chip is to use the electrowet...

Claims

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