Single layer sensor pattern and sensing method

• US 10,126,890 B2
• Filed: 01/18/2016
• Issued: 11/13/2018
• Est. Priority Date: 12/31/2015
• Status: Active Grant

• Current Assignee: Synaptics Incorporated
• Original Assignee: Synaptics Incorporated
• Inventors: Deng, Qingbiao, Wang, Ying, Han, Sang Chul, Zhang, Yi-Fei
• Primary Examiner(s): Xavier, Antonio
• Application Number:
  US14/997,772
• Publication Number:
  US 20170192556A1
• Time in Patent Office: 1,030 Days
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

This disclosure generally provides an input device, electronic systems and processing system for touch sensing. In one example, an input device for touch sensing includes receiver electrodes and transmitter electrodes arranged in transmitter and receiver electrode columns. Each transmitter electrode within each transmitter electrode column is paired with two adjacent receiver electrodes of a first column of the receiver electrode columns. A first plurality of traces couple a first group of receiver electrodes in the first receiver electrode column, the first plurality of traces not passing between the transmitter and receiver electrodes of the first transmitter and receiver electrode columns. A second plurality of traces coupled a second group of receiver electrodes in the first receiver electrode column, the second plurality of traces passing between one of the transmitter electrodes of the first transmitter electrode column and one of the receiver electrodes of the second group of receiver electrodes.

Claims

1. An input device for touch sensing, the input device comprising:

a substrate having a first side;

a plurality of receiver electrodes disposed on the first side of the substrate and arranged in a plurality of receiver electrode columns;

a plurality of transmitter electrodes disposed on the first side of the substrate and arranged in a plurality of transmitter electrode columns, each transmitter electrode within each transmitter electrode column is paired with two adjacent receiver electrodes of a first receiver electrode column of the plurality of receiver electrode columns;

a first plurality of traces disposed on the first side of the substrate and coupling a first group of receiver electrodes in the first receiver electrode column, the first plurality of traces passing between one of the transmitter electrodes of a first transmitter electrode column of the plurality of transmitter electrode columns and one of the receiver electrodes of the first receiver electrode column; and

a second plurality of traces disposed on the first side of the substrate and coupling a second group of receiver electrodes in the first receiver electrode column, the second plurality of traces passing between one of the transmitter electrodes of the first transmitter electrode column and one of the receiver electrodes of the first group of receiver electrodes.

2. The input device of claim 1, wherein each of the receiver electrodes comprising the first receiver electrode column of the plurality of receiver electrode columns comprises:

a receiver electrode body having two recesses, each recess formed in opposite sides of the receiver electrode body, the recesses having an orientation that substantially aligns with a direction in that the first receiver electrode column is oriented.

3. The input device of claim 2, wherein the transmitter electrodes of the first transmitter electrode column of plurality of transmitter electrode columns comprise:

a transmitter electrode body having a first end and a second end, the first and second end extending into recesses in adjacent receiver electrode bodies of the receiver electrodes arranged in the first receiver electrode column.

4. The input device of claim 1, further comprising:

a plurality of transmitter electrode traces routed to transmitter electrodes comprising the first transmitter electrode column that is paired with the first receiver electrode column, wherein the transmitter electrode traces connect to adjacent transmitter electrodes from opposite sides of the first transmitter electrode column.

5. The input device of claim 4, further comprising:

a plurality of receiver electrode traces routed between receiver electrodes comprising the first receiver electrode column, the receiver electrode traces routed between the transmitter electrode traces and the receiver electrodes.

6. The input device of claim 1, wherein no ground electrode is present between the transmitter electrode columns.

7. The input device of claim 1, wherein the first receiver electrode column comprises:

a first plurality of receiver electrode traces electrically connecting the first group of the receiver electrodes in series.

8. The input device of claim 7, wherein the first receiver electrode column comprises:

a second plurality of receiver electrode traces electrically connecting a second group of the receiver electrodes in series.

9. The input device of claim 8, wherein adjacent receiver electrodes of the first group of the receiver electrodes are separated by receiver electrodes of the second group.

10. The input device of claim 7, wherein the receiver electrode traces electrically connecting the first group of the receiver electrodes are routed between adjacent receiver electrodes.

11. The input device of claim 1 further comprising:

a processing system configured to;

sequentially drive sensing signals on transmitter electrodes disposed in the first transmitter electrode column that is paired with the first receiver electrode column;

receive effects of the sensing signals on the first group of receiver electrodes disposed in the first receiver electrode column; and

receive effects of the sensing signals on the second group of receiver electrodes disposed in the first receiver electrode column, wherein the receiver electrodes of the first and second groups are interleaved.