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Micro-fluidic base plate, and micro-fluidic structure and driving method thereof

A microfluidic, substrate technology, applied in the field of microfluidics, can solve the problem of low droplet control accuracy

Active Publication Date: 2020-02-14
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention at least partly solves the problem that the existing microfluidic structure controls the droplet with low accuracy, and provides a microfluidic substrate, a microfluidic structure and a driving method thereof that can realize smoother droplet control

Method used

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  • Micro-fluidic base plate, and micro-fluidic structure and driving method thereof
  • Micro-fluidic base plate, and micro-fluidic structure and driving method thereof
  • Micro-fluidic base plate, and micro-fluidic structure and driving method thereof

Examples

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Embodiment 1

[0065] This embodiment provides a microfluidic substrate, including a substrate, on which a plurality of driving electrodes for driving liquid droplet movement are arranged, each driving electrode is arranged on the same layer and there is a space between adjacent driving electrodes; the microfluidic substrate is also include:

[0066] At least one auxiliary electrode for driving the movement of the droplet is arranged on the substrate, the auxiliary electrode is at least partly arranged in the interval, and is arranged in a different layer from the driving electrode.

[0067] In the microfluidic substrate of this embodiment, an auxiliary electrode that can be used to drive the movement of the droplet is provided at the interval between the driving electrodes. The driving electric field is also formed at the gap between the electrodes, eliminating or reducing the position where the driving electric field cannot be formed, and achieving smoother control of the droplet.

Embodiment 2

[0069] Such as Figure 2 to Figure 13 As shown, the present embodiment provides a microfluidic substrate, which includes:

[0070] base 8;

[0071] A plurality of driving electrodes 51 used to drive the movement of the droplet 9 on the substrate 8, each driving electrode 51 is arranged on the same layer and has a gap 59 between adjacent driving electrodes 51;

[0072] At least one auxiliary electrode 6 for driving the movement of the droplet 9 is provided on the substrate 8. The auxiliary electrode 6 is at least partially arranged in the gap 59 and is arranged in a different layer from the driving electrode 51.

[0073] Wherein, the base 8 refers to a substrate for carrying other structures, which may be in the shape of a plate. And a plurality of driving electrodes 51 are arranged on the same layer, and are arranged in an array for applying a driving voltage to drive the movement of the droplet 9; obviously, since the driving electrodes 51 are arranged on the same layer, th...

Embodiment 3

[0142] Such as Figure 2 to Figure 13 As shown, the present embodiment provides a microfluidic structure, which includes:

[0143] The aforementioned microfluidic substrate;

[0144] The box substrate opposite to the microfluidic substrate, the side of the microfluidic substrate with the drive electrodes 51 faces the box substrate, and the side of the box substrate facing the microfluidic substrate is provided with a common electrode 52 opposite to each drive electrode 51 , a space for accommodating the droplet 9 is formed between the microfluidic substrate and the box substrate.

[0145] That is to say, the above microfluidic substrate can be arranged opposite to the box substrate to form a microfluidic structure, wherein the common electrode 52 is set in the box substrate, so that the required driving electric field can be formed between the two substrates to drive The droplet 9 located between the two substrates moves.

[0146] Preferably, the microfluidic substrate is p...

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Abstract

The invention provides a micro-fluidic base plate, and a micro-fluidic structure and a driving method thereof, and belongs to the micro-fluidic technical field in micro-total analysis. A purpose of the invention is to at least partially solve the problem of not high liquid droplet control precision of the existing micro-fluidic structure. The micro-fluidic base plate comprises a substrate, which is provided with a plurality of driving electrodes for driving liquid droplets, wherein various driving electrodes are arranged on the same layer, gaps are formed between the two adjacent driving electrodes, the micro-fluidic base plate further comprises at least an auxiliary electrode arranged on the substrate and used for driving the liquid droplets to move, the auxiliary electrode is at least partially arranged in the gap, and the auxiliary electrode and the driving electrode are arranged in different layers.

Description

technical field [0001] The invention belongs to the field of microfluidic technology in micro-total analysis, and in particular relates to a microfluidic substrate, a microfluidic structure and a driving method thereof. Background technique [0002] "Micro-total analysis" is a technology that maximizes the transfer of the functions of the analysis laboratory to portable analysis equipment through the miniaturization and integration of chemical analysis equipment. "Microfluidics" is an important means of micro-total analysis. It is a technology to precisely control the movement of the trajectory required by the micro-droplet case. By controlling the movement and separation of droplets, the expected micro-chemical reactions and biological detection can be carried out. etc., to achieve micro-full analysis. [0003] Such as figure 1 As shown, the existing microfluidic structure includes two opposing substrates, one of which is provided with an array of driving electrodes 51, a...

Claims

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Application Information

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IPC IPC(8): B01L3/00
CPCB01L3/50273B01L2400/0415B01L2300/0645B01L3/502792B01L2200/12B01L2300/0819B01L2300/165
Inventor 刘英明董学王海生陈小川丁小梁王雷李昌峰顾品超
Owner BOE TECH GRP CO LTD
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