Touch screen and terminal device comprising same

• US 9,841,852 B2
• Filed: 01/29/2015
• Issued: 12/12/2017
• Est. Priority Date: 01/23/2015
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Ye, Chengliang
• Primary Examiner(s): Dharia, Prabodh M
• Application Number:
  US14/436,897
• Publication Number:
  US 20160342237A1
• Time in Patent Office: 1,048 Days
• Field of Search: 345156-184, 349 12
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

Disclosed are a touch screen and a terminal device. The touch screen includes a first ancillary electrode and a second ancillary electrode. The first ancillary electrode is arranged in a first marginal zone of the touch screen. The second ancillary electrode is arranged in second marginal zone that is opposite to the first marginal zone. The touch screen includes additional ancillary electrodes to increase the touch accuracy at an edge of the touch screen so as to enhance the performance of the touch screen, allowing for easy touch operation conducted by a user.

Claims

1. A touch screen, comprising:

a main touch zone arranged in a portrait orientation having a top and a bottom, a first ancillary electrode and a second ancillary electrode, wherein the first ancillary electrode is arranged in a first peripheral zone of the touch screen and the second ancillary electrode is arranged in a second peripheral zone opposite to the first peripheral zone, the first peripheral zone and the second peripheral zone being on opposite sides of the main touch zone and respectively corresponding to edges of the main touch zone;

wherein at least one of the first ancillary electrode and the second ancillary electrode has a length that is greater than a length of the corresponding one of the edges of the main touch zone;

wherein the length of the second ancillary electrode is greater than length of the first electrode; and

wherein a third ancillary electrode and a fourth ancillary electrode of same length are respectively provided on a third peripheral zone and a fourth peripheral zone of the touch screen, which are respectively located on the top and the bottom of the main touch zone that are different from the first and second peripheral zones, the first, second, third, and fourth ancillary electrodes being separate from each other, the length of the at least one of the first ancillary electrode and the second ancillary electrode is such that at least one of two opposite ends of the at least one of the first ancillary electrode and the second ancillary electrode corresponds to an end of one of the third and fourth ancillary electrodes.

2. The touch screen as claimed in claim 1, wherein the first ancillary electrode has a length less than or equal to a length of the first peripheral zone.

3. The touch screen as claimed in claim 2, wherein the first peripheral zone and the second peripheral zone each comprise an area from the corresponding one of the edges of the main touch zone of the touch screen to an outer frame of the touch screen.

4. The touch screen as claimed in claim 1, wherein the second ancillary electrode has a length less than or equal to a length of the second peripheral zone.

5. The touch screen as claimed in claim 4, wherein the first peripheral zone and the second peripheral zone each comprise an area from the corresponding one of the edges of the main touch zone of the touch screen to an outer frame of the touch screen.

6. The touch screen as claimed in claim 1, wherein the first peripheral zone and the second peripheral zone each comprise an area from the corresponding one of the edges of the main touch zone of the touch screen to an outer frame of the touch screen.

7. The touch screen as claimed in claim 1, wherein the touch screen comprises a capacitive touch screen.

8. A terminal device, comprising:

a touch screen, the touch screen comprising a main touch zone arranged in a portrait orientation having a top and a bottom, a first ancillary electrode and the second ancillary electrode, wherein the first ancillary electrode is arranged in a first peripheral zone of the touch screen and the second ancillary electrode is arranged in a second peripheral zone opposite to the first peripheral zone, the first peripheral zone and the second peripheral zone being on opposite sides of the main touch zone and respectively corresponding to edges of the main touch zone;

wherein at least one of the first ancillary electrode and the second ancillary electrode has a length that is greater than a length of the corresponding one of the edges of the main touch zone;

wherein the length of the second ancillary electrode is greater than length of the first electrode; and

wherein a third ancillary electrode and a fourth ancillary electrode are same length respectively provided on a third peripheral zone and a fourth peripheral zone of the touch screen, which are respectively located on the top and the bottom of two opposite sides of the main touch zone that are different from the first and second peripheral zones, the first, second, third, and fourth ancillary electrodes being separate from each other, the length of the at least one of the first ancillary electrode and the second ancillary electrode is such that at least one of two opposite ends of the at least one of the first ancillary electrode and the second ancillary electrode corresponds to an end of one of the third and fourth ancillary electrodes.

9. The terminal device as claimed in claim 8, wherein the first ancillary electrode has a length less than or equal to a length of the first peripheral zone.

10. The terminal device as claimed in claim 9, wherein the first peripheral zone and the second peripheral zone each comprise an area from the corresponding one of the edges of the main touch zone of the touch screen to an outer frame of the touch screen.

11. The terminal device as claimed in claim 8, wherein the second ancillary electrode has a length less than or equal to a length of the second peripheral zone.

12. The terminal device as claimed in claim 11, wherein the first peripheral zone and the second peripheral zone each comprise an area from the corresponding one of the edges of the main touch zone of the touch screen to an outer frame of the touch screen.

13. The terminal device as claimed in claim 8, wherein the first peripheral zone and the second peripheral zone each comprise an area from the corresponding one of the edges of the main touch zone of the touch screen to an outer frame of the touch screen.

14. The terminal device as claimed in claim 8, wherein the touch screen comprises a capacitive touch screen.