Digital microfluidic chip and digital microfluidic system
US11691147B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | Jan 15, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0427
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A digital microfluidic chip and a digital microfluidic system. The digital microfluidic chip comprises: an upper substrate and a lower substrate arranged opposite to each other; multiple driving circuits and multiple addressing circuits disposed between the lower substrate and the upper substrate; and a control circuit, electrically connected to the driving circuits and the addressing circuits. The control circuit is configured to apply, in a driving stage, a driving voltage to each driving circuit, such that a droplet is controlled to move inside a droplet accommodation space according to a set path, measure, in a detection stage, after a bias voltage is applied to each addressing circuit, a charge loss amount of each addressing circuit, and to determine the position of the droplet according to the charge loss amount. The charge loss amount of each addressing circuit is related to the intensity of received external light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.