A liquid drop control and detection device and a liquid drop control and detection method

Abstract

The invention provides a liquid drop control and detection device and a liquid drop control and detection method. The liquid drop control and detection device comprises a first substrate; a pluralityof pixel regions are distributed on the first substrate in an arrayed manner; each pixel region is inside provided with a first electrode and a first thin film transistor; the liquid drop control anddetection device also comprises a second electrode opposite the first electrodes. When electric signals are applied to the second electrode and the first electrodes, liquid drops can be driven to move; the liquid drop control and detection device also comprises a photo-electric conversion structure capable of converting light signals in each pixel region to electric signals and a processing circuit connected to the photo-electric conversion structure, wherein the processing circuit is used for obtaining liquid drop information according to electric signals of each pixel region acquired by thephoto-electric conversion structure and controlling electric signals applied to the second electrode and the first electrode of each pixel region according to the liquid drop information, the liquid drop information at least including position information of liquid drops. The liquid drop control and detection device and the liquid drop control and detection method can detect the position of liquiddrops; the structure is simplified and the detection and control precision is improved.

Description

technical field [0001] The invention relates to the field of microfluidic technology, in particular to a droplet control detection device and a droplet control detection method. Background technique [0002] Microfluidics chip technology can integrate basic operation units such as sample preparation, reaction, separation, and detection in biological, chemical, and medical analysis processes into a micron-scale chip, and automatically complete the entire analysis process, because it can reduce costs. , short detection time, high sensitivity and other advantages, has shown great prospects in the fields of biology, chemistry, medicine and so on. [0003] In recent years, digital microfluidic technology based on dielectric wetting technology can manipulate discrete droplets, which consumes less reagents, saves costs, has no cross-contamination, can independently control droplets, and is easy to realize the advantages of integrated portable systems. become a research hotspot in ...

AI Technical Summary

Problems solved by technology

[0005] However, the microfluidic devices in the prior art have the following problems: the position of the droplet is detected by other devices other than the microfluidic chip, the structure is complex, the production cost is high, the detection accuracy and the accuracy of the droplet Motion control accuracy needs to be improved

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