US 2021/0010888 A1 · RESISTANCE MEASUREMENT ARRAY

Abstract

A system and method for measuring resistance over an array. The array includes at least three electrodes. Nodes at each intersection between input electrodes and output electrodes have variable resistance. A driving voltage is applied to a selected input electrode and an output current is received at a selected output electrode. A selected node is at the intersection of the two selected electrodes and includes an electrical component with a resistive property. Remaining electrodes are connected with a ground for isolating the selected node from the effects of changes in impedance of the remaining nodes. The driving voltage is converted to an output current by resistance at the selected node. The output current is converted to an output voltage with a current-to-voltage converter circuit for measuring the resistance of the electrical component. The nodes may be measured as the selected node in sequential or non-sequential patterns.

Claims37

Dependent claims

A method of measuring resistance comprising:

providing an array of two or more nodes, each of the nodes defined at an intersection of an input electrode and an output electrode;
selecting a selected node at an intersection of a selected input electrode and a selected output electrode, the selected node comprising an electrical component having a resistive property;
grounding remaining input electrodes other than the selected input electrode;
grounding remaining output electrodes other than the selected output electrode;
applying a driving voltage to the selected input electrode;
converting the driving voltage to an output current through a resistance of the electrical component;
receiving the output current at the selected output electrode;
and
converting the output current to an output voltage for measuring the resistance of the electrical component.

6 more elements

A system for measuring resistance, the system comprising:

at least three electrodes arranged in an array, the electrodes comprising at least one input electrode and at least one output electrode, and the array comprising at least two nodes, each node being defined at an intersection between an input electrode and an output electrode;
a driving voltage source in electrical communication with the input electrode for providing a driving voltage to a selected node defined at an intersection between a selected input electrode and a selected output electrode, the selected node comprising an electrical component having a resistive property;
a switching system in operative communication with the electrodes for selecting the selected node;
a current-to-voltage converter circuit in electrical communication with the output electrode for receiving an output current from the selected node and converting the output current to an output voltage;
and
a ground in communication with the array for grounding remaining input electrodes other than the selected input electrode, and for grounding remaining output electrodes other than the selected output electrode, for isolating the selected node from electrical effects on the array other than at the selected node.

3 more elements

Dependencies are inferred from the claim text.

Resistance measurement array

Life of this patent

Resistance measurement array

Life of this patent

Abstract

Claims37