Sensing devices

• US 10,168,818 B2
• Filed: 01/21/2015
• Issued: 01/01/2019
• Est. Priority Date: 11/24/2010
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Edwards, Martin John
• Primary Examiner(s): Tzeng, Fred
• Application Number:
  US14/601,429
• Publication Number:
  US 20150138150A1
• Time in Patent Office: 1,441 Days
• Field of Search: 345174
• 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, a width of each first electrode is larger than a width of the first signal line, the first signal line passes through the first electrodes and overlaps the first electrodes, and the transmitter provides a first voltage level to the first electrode; and

a second electrode electrically controlled by the transmitter wherein the transmitter provides a second voltage level to the second electrode, and the first voltage level is different from the second voltage level;

wherein the first electrodes and the second electrode are disposed on a same 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 voltage level is 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 the second electrode are disposed, 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. 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.

11. An electronic device comprising:

a display apparatus as claimed in claim 10; and

an input unit, wherein the input unit is operatively coupled to the display device.

12. The electronic device as claimed in claim 11, wherein the electronic device is a PDA, a digital camera, a display monitor, a notebook computer, a tablet computer, or a cellular phone.

13. The sensing device as claimed in claim 1, wherein the second electrode electrically is connected to a second signal line, a width of the second electrode is larger than a width of the second signal line, and the second signal line passes through the second electrode and overlaps the second electrode.

14. The sensing device as claimed in claim 13, wherein the second signal line crosses the first receiving electrode and the first electrodes.