AM-EWOD DEVICE AND METHOD OF DRIVING WITH VARIABLE VOLTAGE AC DRIVING

摘要

An active matrix electrowetting on dielectric (AM-EWOD) device includes a substrate electrode and a plurality of array elements, each array element including an array element electrode. The AM-EWOD device further includes thin film electronics disposed on a substrate. The thin film electronics includes first circuitry configured to supply a first time varying signal V1 to the array element electrodes, and second circuitry configured to supply a second time varying signal V2 to the substrate electrode. An actuation voltage is defined by a potential difference between V2 and V1, and the first circuitry further is configured to adjust the amplitude of V1 to adjust the actuation voltage. V1 may be adjusted to adjust the actuation voltage while V2 remains unchanged. The actuation voltage may be controlled to operate the AM-EWOD device between high and low voltage modes of operation in accordance with different droplet manipulation operations to be performed.

主权项

1. An active matrix electrowetting on dielectric (AM-EWOD) device comprising:
a substrate electrode; a plurality of array elements, each array element including an array element electrode; first circuitry configured to supply a first time varying signal V1 to at least a portion of the array element electrodes; and second circuitry configured to supply a second time varying signal V2 to the substrate electrode; wherein an actuation voltage is defined by a potential difference between V2 and V1, and the first circuitry further is configured to adjust the amplitude of V1 to adjust the actuation voltage.