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Microfluidic device

A fluid and tiny technology, applied in measurement devices, fluid controllers, optics, etc., can solve problems such as residues and separation of droplets 51 into multiples, and achieve the effect of high flatness

Active Publication Date: 2018-04-17
SHARP LIFE SCI EU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] As a result, as Figure 7 As shown by the two-dot chain line in the middle, even if the droplet 51 moves, a part of the droplet 51 will remain on the flow path, and the droplet 51 may be separated into a plurality (in Figure 7 In the example shown is the problem of two droplets 51a, 51b)

Method used

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Embodiment approach 1

[0082] based on Figure 1 ~ Figure 3 One embodiment of the present invention will be described below.

[0083] In this embodiment, an active matrix dielectric electrowetting (AM-EWOD) device in which segment electrodes are arranged in a matrix is ​​described as an example of the microfluidic device according to the present embodiment. Hereinafter, for convenience of description, constituent elements having the same functions as those described in the background art will be described with the same reference numerals attached thereto.

[0084]

[0085] figure 1 It is a cross-sectional view schematically showing an example of a schematic configuration of a main part of the microfluidic device 1 according to the present embodiment. figure 2 It is a plan view schematically showing an example of a schematic structure of the thin-film electronic circuit layer 12 in the microfluidic device 1 according to the present embodiment.

[0086] Such as figure 1 as well as figure 2 ...

Embodiment approach 2

[0216] based on Figure 4 This embodiment will be described below. In addition, in this embodiment, differences from Embodiment 1 will be mainly described, and constituent elements having the same functions as those used in Embodiment 1 will be given the same reference numerals and description thereof will be omitted.

[0217]

[0218] Figure 4 It is a cross-sectional view showing an example of a schematic configuration of a main part of the microfluidic device 1 according to the present embodiment.

[0219] Such as Figure 4 As shown, the microfluidic device 1 according to the present embodiment has the same structure as the microfluidic device 1 according to the first embodiment except that the second planarizing resin layer 16 covers the plurality of electrodes 14 on the array substrate 10 .

[0220] In the present embodiment, the second planarizing resin layer 16 is laminated on the first planarizing resin layer 13 so as to fill the contact hole 19 and cover the electr...

Embodiment approach 3

[0237] based on Figure 5 This embodiment will be described below. In addition, in this embodiment, differences from Embodiments 1 and 2 will be mainly described, and components having the same functions as those used in Embodiments 1 and 2 will be given the same reference numerals, and Its description is omitted.

[0238]

[0239] Figure 5 It is a cross-sectional view showing an example of a schematic configuration of a main part of the array substrate 10 according to this embodiment.

[0240] Such as Figure 5 As shown, the microfluidic device 1 according to this embodiment is similar to Embodiments 1 and 2 except that the ion blocking layer 17 covers the plurality of electrodes 14 on the array substrate 10 and the second planarizing resin layer 16 covers the ion blocking layer 17. The involved microfluidic device 1 has the same structure.

[0241] That is, in this embodiment, the ion barrier layer 17 is provided between the electrode 14 and the second planarizing re...

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Abstract

Provided is a microfluidic device that, as compared with a conventional microfluidic device, is smoother in surface of a water-repellent layer provided above a segment electrode and makes it easier for microfluid provided in the surface of the water-repellent layer to slide. A microfluidic device (1) includes: an array substrate (10) including a plurality of electrodes (14); and a counter substrate (40) including at least one electrode (42), the array substrate (10) and the counter substrate (40) having therebetween an internal space (50) in which to cause an electroconductive droplet (51) tomove across the plurality of electrodes (14), and the plurality of electrodes (14) being provided on a first flattening resin layer (13) and each being a light-blocking metal electrode.

Description

technical field [0001] The present invention relates to electrowetting of dielectrics (EWOD) microfluidic devices for microfluidic actuation. Background technique [0002] Microfluidics engineering is, for example, a rapidly developing field concerned with the manipulation of tiny fluids (eg, droplets) in small volumes called sub-microliters. [0003] In general, the manipulation of microfluidics is suitable for the sensing of the position, size, and composition of microfluidics. A microfluidic device that manipulates and moves a microfluid can be applied to various measurements of molecular diffusion coefficient, fluid viscosity, pH, chemical bond coefficient, enzyme reaction rate, and the like. Other application examples of microfluidic devices include sample injection of proteins analyzed by capillary electrophoresis, isoelectric focusing, immunoassay, enzyme assay, flow cytometry, and mass spectrometry, and PCR amplification. , DNA analysis, cell manipulation, cell sep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/00
CPCG02B26/005B01L3/502792B01L2300/0654B01L2300/168B01L3/502715B01L3/502746B01L3/502761B01L3/502784B01L2200/06B01L2300/0887B01L2300/165B01L2400/0427G01N27/44786G01N27/44791
Inventor 小坂知裕纪藤贤一原猛门野真也安尾文利大王学寺西知子李昊
Owner SHARP LIFE SCI EU LTD
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