METHOD FOR PROVIDING SELF-DETECTION OF AN OPEN-CIRCUIT OR CLOSED-CIRCUIT CONDITION IN A DIELECTRIC DEVICE

• Main Authors: LIN, CHUN-JEN, HUANG, HUNG-YUN, CHEN, KENG-YUAN, LU, TINGIEH, CHEN, CHUNG-YAO, WENG, YU-FU, HSU, WEI-YANG
• Format: Patent
• Language: English; French; German
• Published: 06.04.2022
• Subjects: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TRANSPORTING

An electrowetting on dielectric (EWOD) device for self-detection of an open-circuit or closed-circuit condition includes a detection chip, a power input module, a switch module, a detection module, and a determination module. The detection chip includes a channel, several driving electrodes, and a detection electrode. Each driving electrode can couple with the detection electrode to form the driving loop. The switch unit selects one of the driving electrodes to be electrically connected to the power input module for receiving a power voltage from the power input module. The detection module receives a detection voltage outputted by the detection electrode and accumulates the detection voltage to obtain an accumulated voltage. The determination module compares the accumulated voltage with a specified voltage for determining whether the driving loop is open-circuit or closed-circuit. A method for a self-detection circuit in EWOD device is also disclosed.