SENSING DEVICES

• US 20150138150A1
• Filed: 01/21/2015
• Published: 05/21/2015
• Est. Priority Date: 11/24/2010
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Edwards, Martin John
• Granted Patent: US 10,168,818 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A sensing device is provided. The sensing device includes a first receiving electrode, a plurality of first electrodes, and a second electrode. The first receiving electrode extends in a first direction and controlled to a receiver. The first electrodes are connected electrically by a first signal line. At least one of the first electrodes is coupled to and controlled by a transmitter. The second electrode is electrically connected by a second signal line. The first electrodes and the second electrode are disposed on a row which extends in a second direction intersecting the first direction. The first signal line crosses the first receiving electrode and the second electrode.

Claims

1. A sensing device comprising:

a first receiving electrode extending in a first direction and coupled to a receiver;

a plurality of first electrodes connected electrically by a first signal line, wherein at least one of the first electrodes is coupled to and controlled by a transmitter; and

a second electrode electrically connected to a second signal line;

wherein the first electrodes and the second electrode are disposed on a row which extends in a second direction intersecting the first direction, and

wherein the first signal line crosses the first receiving electrode and the second electrode.

2. The sensing device as claimed in claim 1, wherein when the transmitter provides a transmitting signal to the first electrodes, the transmitter provides a predetermined voltage level to the second electrode.

3. The sensing device as claimed in claim 2, wherein a polarity of the predetermined voltage level is inverse to a polarity of a voltage level of the transmitting signal.

4. The sensing device as claimed in claim 1, wherein when the transmitter provides a transmitting signal to the first electrodes, the second electrode receives a ground voltage level.

5. The sensing device as claimed in claim 1 further comprising:

a third electrode electrically connected to a third signal line;

wherein the third electrode is disposed on the row wherein the first electrodes and

wherein the first signal line crosses the third electrode, and the third signal crosses the first receiving electrode, the first electrodes, and the second electrode.

6. The sensing device as claimed in claim 5, wherein the third electrode and one of the first electrodes are disposed on two sides of the first receiving electrode.

7. The sensing device as claimed in claim 6, wherein when the transmitter provides a transmitting signal to the one of the first electrodes and the third electrode which are disposed on two sides of the first receiving electrode, the transmitter provides a predetermined voltage level to the second electrode.

8. The sensing device as claimed in claim 7, wherein a polarity of the predetermined voltage level is inverse to a polarity of a voltage level of the transmitting signal.

9. The sensing device as claimed in claim 6, wherein when the transmitter provides a transmitting signal to the one of the first electrodes and the third electrode which are disposed on two sides of the first receiving electrode, the second electrode receives a ground voltage level.

10. The sensing device as claimed in claim 1, wherein the second signal line crosses the first receiving electrode and the first electrodes.

11. A display apparatus comprising:

a sensing device as claimed in claim 1; and

a controller, wherein the controller is operatively coupled to the sensing device.

12. An electronic device comprising:

a display apparatus as claimed in claim 11; and

13. The electronic device as claimed in claim 12, wherein the electronic device is a PDA, a digital camera, a display monitor, a notebook computer, a tablet computer, or a cellular phone.