公开(公告)号：US20180284424A1

公开(公告)日：2018-10-04

申请号：US15478752

申请日：2017-04-04

申请人： Sharp Microfluidic Solutions Limited

发明人： Christopher James BROWN ,  Benjamin James HADWEN ,  Pamela Ann DOTHIE

IPC分类号： G02B26/00

CPC分类号： G02B26/005 ,  B01L3/50273 ,  B01L3/502792 ,  B01L2300/0816 ,  B01L2300/089 ,  B01L2400/0427

摘要： A microfluidic system includes an electrowetting on dielectric (EWOD) device comprising an array of elements that are actuatable for manipulation of a liquid droplet within the EWOD device. The system has a pattern generator that generates an actuation pattern for actuating a portion of the elements in the array of elements, and a signal generator that generates voltage signals for actuating elements in the array of elements in accordance with the actuation pattern. The pattern generator generates an actuation pattern in which voltage signals applied to elements in at least part of a region at or adjacent to a contact line of the droplet are different from voltage signals applied to elements that are not in the part of the region at or adjacent to the contact line. The system further may include a sensor for sensing the droplet contact line constituting a boundary of the liquid droplet.

公开(公告)号：US20170326524A1

公开(公告)日：2017-11-16

申请号：US15527836

申请日：2015-12-18

申请人： SHARP MICROFLUIDIC SOLUTIONS LIMITED

发明人： Benjamin James HADWEN ,  Christopher James BROWN

IPC分类号： B01J19/00 ,  G01N27/447 ,  B01L3/00 ,  H01L21/67

CPC分类号： B01J19/004 ,  B01L3/50273 ,  B01L3/502792 ,  B01L2300/0816 ,  B01L2400/0424 ,  B01L2400/0427 ,  F04B19/006 ,  G01N27/44769 ,  G02B26/005 ,  G09G3/348 ,  G09G2230/00 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0857 ,  G09G2310/0251 ,  H01L21/67023 ,  H01L21/67132

摘要： A method of driving an element of an active matrix electro-wetting on dielectric (AM-EWOD) device comprise applying a first alternating voltage to a reference electrode of the AM-EWOD device; and either (i) applying to the element electrode a second alternating voltage that has the same frequency as the first alternating voltage and that is out of phase with the first alternating voltage or (ii) holding the element electrode in a high impedance state. The effect of applying the second alternating voltage to the element electrode is to put the element in an actuated state in which the element is configured to actuate any liquid droplet present in the element, while the effect of holding the element electrode in the high impedance state is to put the element in a non-actuated state.