TOUCHSCREEN PANEL AND TOUCHSCREEN DEVICE

• US 20140062915A1
• Filed: 03/26/2013
• Published: 03/06/2014
• Est. Priority Date: 09/05/2012
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: KIM, Hyun Jun, Park, Tah Joon
• Application Number:
  US13/850,388
• Publication Number:
  US 20140062915A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• 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

There are provided a touchscreen panel and a touchscreen device, the touchscreen panel including: a plurality of first electrodes each including a base portion extended in a first axis direction and one or more branch portions connected to the base portion; and a plurality of second electrodes each extended in a second axis direction intersecting the first axis direction, wherein the branch portions may be extended from an intersection between the base portion of the first electrode and the second electrode.

Claims

1. A touchscreen panel, comprising:

a plurality of first electrodes each including a base portion extended in a first axis direction and one or more branch portions connected to the base portion; and

a plurality of second electrodes each extended in a second axis direction intersecting the first axis direction,

wherein the branch portions are extended from an intersection between the base portion of the first electrode and the second electrode.

2. The touchscreen panel of claim 1, further comprising a third electrode formed between one first electrode and another first electrode adjacent thereto among the plurality of first electrodes, the third electrode being grounded.

3. The touchscreen panel of claim 1, wherein a portion of the first electrode and a portion of the second electrode are included in a single unit sensing cell being square, and the branch portions included in the unit sensing cell are extended in diagonal directions in the unit sensing cell.

4. The touchscreen panel of claim 3, wherein the branch portions included in the unit sensing cell, are spaced apart from branch portions included in another unit sensing cell adjacent to the unit sensing cell.

5. The touchscreen panel of claim 1, wherein the branch portions are symmetrical to each other with respect to the first axis direction and the second axis direction, centered on the intersection between the first electrode and the second electrode.

6. The touchscreen panel of claim 1, wherein distal ends of the branch portions are parallel with the first axis direction and the second axis direction.

7. The touchscreen panel of claim 1, wherein the base portion of the first electrode has a width equal to or less than that of the second electrode.

8. The touchscreen panel of claim 1, further comprising an operating unit determining a touch input by sequentially applying predetermined driving signals to the plurality of respective first electrodes and detecting changes in capacitance from the plurality of second electrodes intersecting the first electrodes to which the driving signals are applied.

9. A touchscreen device, comprising:

a panel unit including a plurality of first electrodes each extended in a first axis direction and a plurality of second electrodes each extended in a second axis direction intersecting the first axis direction; and

an operating unit electrically connected to the plurality of first electrodes and the plurality of second electrodes to determine a touch input,

wherein the first electrode includes a base portion extended in the first axis direction and branch portions connected to the base portion, and

the branch portions are extended from an intersection between the base portion of the first electrode and the second electrode.

10. The touchscreen device of claim 9, wherein the panel unit includes a plurality of unit sensing cells each being square and including the first electrode the second electrode intersecting each other at a center of the square.

11. The touchscreen device of claim 10, wherein the first electrode and the second electrode included in one unit sensing cell are connected to the first electrode and the second electrode included in another unit sensing cell adjacent thereto among the plurality of unit sensing cells.

12. The touchscreen device of claim 10, wherein the branch portions of the first electrode included in the unit sensing cell are extended from the center of the square in diagonal directions.

13. The touchscreen device of claim 10, wherein the branch portions are symmetrical to each other with respect to the first axis direction and the second axis direction, centered on the center of the square.

14. The touchscreen device of claim 12, wherein distal ends of the branch portions extended from the center of the square in the diagonal directions are parallel with the second electrode.

15. The touchscreen device of claim 9, wherein the operating unit determines a touch input by applying a predetermined driving signal to the first electrodes and detecting changes in capacitance from the second electrodes.

16. The touchscreen device of claim 15, wherein the operating unit determines at least one of coordinates of the touch input, a gesture motion due to the touch input, and the number of touch inputs.

17. The touchscreen device of claim 9, wherein the panel unit further includes a third electrode formed between one first electrode and another first electrode adjacent thereto among the plurality of first electrodes, the third electrode being grounded.