Microfluidic chip and method for using the same

A microfluidic chip suitable for controlling movement of a microfluid and detecting a position of the microfluid, the microfluidic chip comprising:

• a first substrate;
• a second substrate disposed opposite to the first substrate, wherein the first substrate and the second substrate are spaced apart to form a microfluidic channel therebetween, and the microfluid is adapted to move in the microfluidic channel;
• a plurality of first scan lines and a plurality of first signal lines disposed on the first substrate;
• a plurality of second scan lines and a plurality of second signal lines disposed on the second substrate;
• a plurality of actuating units disposed on the first substrate, wherein each of the plurality of actuating units comprises a first active device and a driving electrode, and the first active device is electrically connected to one of the plurality of first scan lines, one of the plurality of first signal lines, and the driving electrode, a control terminal of the first active device receives a first scan signal from the one of the plurality of first scan lines, a source terminal of the first active device receives a first voltage signal from the one of the plurality of first signal lines, and the driving electrode is electrically connected to a drain terminal of the first active device;
• and
• a plurality of heating units disposed on the second substrate and respectively overlapping the plurality of actuating units along a stacking direction of the first substrate and the second substrate, wherein the plurality of heating units are structurally separated from the plurality of actuating units, each of the plurality of heating units comprises a second active device and a negative temperature coefficient thermistor, and the second active device is electrically connected to one of the plurality of second scan lines and one of the plurality of second signal lines, a control terminal of the second active device receives a second scan signal from the one of the plurality of second scan lines, a source terminal of the second active device receives a second voltage signal from the one of the plurality of second signal lines, and a first terminal of the negative temperature coefficient thermistor is electrically connected to a drain terminal of the second active device.