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US 12,614,527 B2Granted
Apparatus and system using active-matrix electrowetting-on-dielectric (AM-EWOD)
AssigneeCytesi, Inc.
InventorsTung-Yu Wu, Chung-Yi Wang, Tang-Hung Po
Life of this patent
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Abstract
An apparatus and a system are provided. The system includes a top plate electrode, a dielectric layer, a plurality of pixel electrode circuits, and a plurality of detection circuits. A droplet is disposed between the top plate electrode and the dielectric layer. The plurality of pixel electrode circuits are arranged in a two-dimensional array. The pixel electrode circuits in each column of the two-dimensional array are electrically connected to a respective detection circuit of the plurality of detection circuits.
Claims19
An apparatus, comprising:
- a pixel electrode circuit, comprising:
- a first switch, controlled by a first control signal, the first switch comprising a first terminal electrically connected to a first voltage, and a second terminal electrically connected to a first node;
- an inverter, coupled between the first node and a second node;
- a first transistor, having a gate electrically connected to the first node, a first terminal connected to a first power supply voltage, and a second terminal connected to a first output port of the pixel electrode circuit;
- a second transistor, having a gate electrically connected to the first node, a first terminal connected to a third node, and a second terminal connected to a second output port of the pixel electrode circuit;
- and
- a third transistor, having a gate electrically connected to the second node, a first terminal connected to a fourth node, and a second terminal connected to the third node;
- and
- a detection circuit, comprising:
- a second switch, controlled by a bias voltage, the second switch comprising a first terminal electrically connected to the first output port of the pixel electrode circuit, and a second terminal connected to a first control voltage;
- and
- a third switch, controlled by a test-mode voltage, the third switch comprising a first terminal electrically connected to the second output port of the pixel electrode circuit, and a second terminal connected to a second control voltage.
9 more elements
A system, comprising:
- a top plate electrode;
- a dielectric layer, wherein a droplet is disposed between the top plate electrode and the dielectric layer;
- a plurality of pixel electrode circuits, arranged in a two-dimensional array;
- and
- a plurality of detection circuits,
- wherein the pixel electrode circuits in each column of the two-dimensional array are electrically connected to a respective detection circuit of the plurality of detection circuits,
- wherein each of the plurality of pixel electrode circuits comprises:
- a first switch, controlled by a first control signal, the first switch comprising a first terminal electrically connected to a first voltage, and a second terminal electrically connected to a first node;
- an inverter, coupled between the first node and a second node;
- a first transistor, having a gate electrically connected to the first node, a first terminal connected to a first power supply voltage, and a second terminal connected to a first output port of the pixel electrode circuit;
- a second transistor, having a gate electrically connected to the first node, a first terminal connected to a third node, and a second terminal connected to a second output port of the pixel electrode circuit;
- and
- a third transistor, having a gate electrically connected to the second node, a first terminal connected to a fourth node, and a second terminal connected to the third node.
10 more elements
Dependencies are inferred from the claim text.