Method of driving an element of an active matrix EWOD device, a circuit, and an active matrix EWOD device
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United States of America Patent
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May 26, 2020
Grant Date -
Nov 16, 2017
app pub date -
Dec 18, 2015
filing date -
Jan 8, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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International Classification(s)
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- G09G:ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING....
- B01L:CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENE....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- F04B:POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....
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