Title:
ACTIVE MATRIX DEVICE AND METHOD OF DRIVING
Document Type and Number:
WIPO Patent Application WO/2017/047086
Kind Code:
A1
Abstract:
An active matrix electro-wetting on dielectric (AM-EWOD) device includes a plurality of array elements arranged in an array, each of the array elements including array element circuitry, an element electrode, and a reference electrode. The array element circuitry includes an actuation circuit configured to apply actuation voltages to the electrodes, and an impedance sensor circuit configured to sense impedance at the array element electrode to determine a droplet property at the array element. The impedance sensor circuit is operated by perturbing a potential applied to the reference electrode. The AM-EWOD device includes a common row addressing line. The impedance sensor circuit further is operated by supplying voltage signals over the common addressing line to effect both a reset operation and an operation for selecting a row in the array to be sensed. The circuitry isolates the array element from the actuation voltage during operating the impedance sensor circuit.
Inventors:
HADWEN BENJAMIN JAMES
Application Number:
PCT/JP2016/004214
Publication Date:
March 23, 2017
Filing Date:
September 15, 2016
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
G01N27/02; B01J19/00; G01N1/00; G01N35/08
Foreign References:
| US20130293246A1 | 2013-11-07 | |||
| US20140151232A1 | 2014-06-05 | |||
| US8173000B1 | 2012-05-08 | |||
| US8653832B2 | 2014-02-18 | |||
| US20050247559A1 | 2005-11-10 | |||
| GB201500260A | 2015-01-08 | |||
| GB201500261A | 2015-01-08 | |||
| US8653832B2 | 2014-02-18 | |||
| US20140121232A1 | 2014-05-01 | |||
| US20130293246A1 | 2013-11-07 |
Other References:
M.J. SHERTZER ET AL.: "Using capacitance measurements in EWOD devices to identify fluid composition and control droplet mixing", SENSORS AND ACTUATORS B: CHEMICAL, vol. 145, 2010, pages 340 - 347, XP026920990
SAMAN SADEGHI ET AL.: "On Chip Droplet Characterization: A Practical, High-Sensitivity Measurement of Droplet Impedance in Digital Microfluidics", ANAL. CHEM., vol. 84, 2012, pages 1915 - 1923, XP055373104
See also references of EP 3350584A4
SAMAN SADEGHI ET AL.: "On Chip Droplet Characterization: A Practical, High-Sensitivity Measurement of Droplet Impedance in Digital Microfluidics", ANAL. CHEM., vol. 84, 2012, pages 1915 - 1923, XP055373104
See also references of EP 3350584A4
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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