Capacitive touch panel having single-layer touch sensor

• US 9,746,978 B2
• Filed: 09/28/2015
• Issued: 08/29/2017
• Est. Priority Date: 09/30/2014
• Status: Expired due to Fees

• Current Assignee: Raydium Semiconductor Corporation
• Original Assignee: Raydium Semiconductor Corporation
• Inventors: Lin, Yi-Ying, Lee, Kun-Pei, Shieh, Hsin-Wei
• Primary Examiner(s): Giesy, Adam R
• Assistant Examiner(s): Wills-Burns, Chineyere
• Application Number:
  US14/867,680
• Publication Number:
  US 20160092003A1
• Time in Patent Office: 701 Days
• Field of Search: 345174
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A capacitive touch panel is disclosed. The capacitive touch panel includes a laminated structure. The laminated structure includes a liquid crystal displaying module, a single-layer touch sensor, and a polarizing module. The single-layer touch sensor is disposed on the liquid crystal displaying module. The polarizing module is disposed on the single-layer touch sensor. The single-layer touch sensor includes a plurality of first electrodes and a plurality of second electrodes. The first electrodes and the second electrodes are configured in an asymmetric electrode arranging way, so that one of the first electrodes will be arranged corresponding to at least two of the second electrodes.

Claims

1. A capacitive touch panel, comprising:

a laminated structure, comprising;

a liquid crystal displaying module;

a single-layer touch sensor, disposed on the liquid crystal displaying module, the single-layer touch sensor comprising;

a plurality of first electrodes; and

a plurality of second electrodes; and

a polarizing module, disposed on the single-layer touch sensor;

wherein, the plurality of first electrodes and the plurality of second electrodes are configured in an asymmetric electrode arranging way, so that a first electrode of the plurality of first electrodes is arranged corresponding to at least two second electrodes of the plurality of second electrodes, the first electrode is disposed in a center part of the plurality of first electrodes instead of being disposed at two ends of the plurality of first electrodes, another first electrode of the plurality of first electrodes is disposed at one of the two ends of the plurality of first electrodes, and the another first electrode is arranged corresponding to another at least one second electrode of the plurality of second electrodes, the number of the another at least one second electrode corresponding to the another first electrode is smaller than that of the at least two second electrodes corresponding to the first electrode.

2. The capacitive touch panel of claim 1, wherein still another first electrode of the plurality of first electrodes is also disposed in the center part of the plurality of first electrodes instead of being disposed at the two ends of the plurality of first electrodes, the still another first electrode is arranged corresponding to still another at least two second electrodes of the plurality of second electrodes, and the number of the still another at least two second electrodes corresponding to the still another first electrode is equal to that of the at least two second electrodes corresponding to the first electrode.

3. The capacitive touch panel of claim 2, wherein the at least two second electrodes are the same with the still another at least two second electrodes.

4. The capacitive touch panel of claim 2, wherein the at least two second electrodes are different from the still another at least two second electrodes.

5. The capacitive touch panel of claim 1, wherein the another first electrode and still another first electrode of the plurality of first electrodes are disposed at the two ends of the plurality of first electrodes respectively, and the another first electrode is arranged corresponding to another at least one second electrode of the plurality of second electrodes and the still another first electrode is arranged corresponding to still another at least one second electrode of the plurality of second electrodes.

6. The capacitive touch panel of claim 5, wherein the number of the another at least one second electrode corresponding to the another first electrode is equal to that of the still another at least one second electrode corresponding to the still another first electrode.

7. The capacitive touch panel of claim 6, wherein the another at least one second electrode is different from the still another at least one second electrode.

8. The capacitive touch panel of claim 5, wherein the number of the another at least one second electrode corresponding to the another first electrode is different from that of the still another at least one second electrode corresponding to the still another first electrode.

9. The capacitive touch panel of claim 1, wherein the another first electrode of the plurality of first electrodes is disposed at the two ends of the plurality of first electrodes simultaneously, and the another first electrode is arranged corresponding to the another at least one second electrode and still another at least one second electrode of the plurality of second electrodes corresponding to the two ends of the plurality of first electrodes simultaneously.

10. The capacitive touch panel of claim 1, wherein the plurality of first electrodes is driving electrodes and the plurality of second electrodes is sensing electrodes.

11. The capacitive touch panel of claim 1, wherein the plurality of first electrodes is sensing electrodes and the plurality of second electrodes is driving electrodes.