Touch panel and input recognition device using the touch panel

• US 8,928,603 B2
• Filed: 01/18/2011
• Issued: 01/06/2015
• Est. Priority Date: 01/15/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Han, Dong-Kyoon, Park, Sung-Soo, Park, Myeong-Sil
• Primary Examiner(s): NGUYEN, KIMNHUNG T
• Application Number:
  US13/008,307
• Publication Number:
  US 20110175834A1
• Time in Patent Office: 1,449 Days
• Field of Search: 345/158, 345173-180, 178 1801- 1804
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• 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 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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 touch panel is provided including at least one first electrode pattern including a plurality of electrode lines arranged in a first direction; and at least one second electrode pattern including a plurality of second electrode lines arranged in a second direction to intersect the first electrode lines; wherein the first electrode lines are spaced apart at different intervals from one another in the first direction.

Claims

1. A touch panel comprising:

at least one electrode pattern including a plurality of electrode lines arranged in a direction,

wherein the plurality of electrode lines includes a center electrode line and two electrode lines positioned on each side of the center electrode line,

wherein first spaces separate the center electrode line from each adjacent electrode line,

wherein second spaces separate each adjacent electrode line from next electrode lines on respective sides opposite the center electrode line,

wherein the first spaces are smaller than the second spaces,

wherein the at least one electrode pattern is arranged so that the center electrode line is wider than each adjacent electrode line, and

wherein each of the first spaces is constant over a full length of the center electrode line, and each of the second spaces is constant over a full length of each adjacent electrode line.

2. The touch panel of claim 1, wherein the adjacent electrode lines have a same width, the next electrode lines have a same width, and a width of the center electrode line is different from each of the adjacent electrode lines and the width of the next electrode lines.

3. The touch panel of claim 1, further comprising a plurality of additional electrode lines arranged in a direction crossing the direction of the plurality of electrode lines.

4. The touch panel of claim 1, wherein each of the center electrode line, the adjacent electrode lines and the next electrode lines has a constant width over a full length thereof.

5. A touch panel comprising:

at least one electrode pattern including a plurality of electrode lines arranged in a direction,

wherein the plurality of electrode lines includes a center electrode line and two electrode lines positioned on each side of the center electrode line,

wherein first spaces separate the center electrode line from each adjacent electrode line,

wherein second spaces separate each adjacent electrode line from next electrode lines on respective sides opposite the center electrode line,

wherein the first spaces are larger than the second spaces, and

wherein each of the first spaces is constant over a full length of the center electrode line, and each of the second spaces is constant over a full length of each adjacent electrode line.

6. The touch panel of claim 5, wherein the plurality of electrode lines have different widths, arranged to become wider toward an edge portion of the at least one electrode pattern and narrower at a center of the at least one electrode pattern.

7. The touch panel of claim 6, wherein a space between the plurality of electrode lines has different widths, with the space wider at a center of the at least one electrode pattern and narrower at an edge portion of the at least one electrode pattern.

8. The touch panel of claim 5, wherein a flat plate formed by the at least one electrode pattern and a flat plate formed by an additional electrode pattern form separate layers.

9. The touch panel of claim 5, wherein each of the center electrode line, the adjacent electrode lines and the next electrode lines has a constant width over a full length thereof.

11. The input recognition device of claim 9, wherein the adjacent electrode lines have a same width, the next electrode lines have a same width, and a width of the center electrode line is different from each of the adjacent electrode lines and the width of the next electrode lines.

10. An input recognition device using a touch panel, comprising:

the touch panel, including at least one electrode pattern including a plurality of electrode lines arranged in a direction, with the plurality of electrode lines including a center electrode line and two electrode lines positioned on each side of the center electrode line, wherein first spaces separate the center electrode line from each adjacent electrode line, second spaces separate each adjacent electrode line from next electrode lines on respective sides opposite the center electrode line, the first spaces are smaller than the second spaces, and the touch panel is configured to output signals according to a touch input;

a mode determination unit, configured to determine a touch input based on a signal input through the touch panel, configured to output a sense signal by a finger touch or a sense signal by a stylus pen in accordance with the result of determination; and

a control unit, configured to determine the touch and position of the touch input by the signal output from the mode determination unit,

wherein the at least one electrode pattern is arranged so that the center electrode line is wider than each adjacent electrode line, and

wherein each of the first spaces is constant over a full length of the center electrode line, and each of the second spaces is constant over a full length of each adjacent electrode line.

12. The input recognition device of claim 10, wherein each of the center electrode line, the adjacent electrode lines and the next electrode lines has a constant width over a full length thereof.

13. An input recognition device comprising:

a touch panel, which includes at least one electrode pattern including a plurality of electrode lines arranged in a direction, with the plurality of electrode lines including a center electrode line and two electrode lines positioned on each side of the center electrode line, wherein first spaces separate the center electrode line from each adjacent electrode line, second spaces separate each adjacent electrode line from next electrode lines on respective sides opposite the center electrode line, the first spaces are larger than the second spaces, and the touch panel is configured to output signals according to a touch input;

a mode determination unit configured to determine a touch input based on a signal input through the touch panel and configured to output a sense signal by a finger touch and a sense signal by a stylus pen in accordance with the result of determination; and

a control unit configured to determine the touch and position of the touch input by the signal output from the mode determination unit,

wherein each of the first spaces is constant over a full length of the center electrode line, and each of the second spaces is constant over a full length of each adjacent electrode line.

14. The input recognition device of claim 13, wherein the plurality of electrode lines have different widths, arranged to become wider toward an edge portion of the at least one electrode pattern and narrower at a center of the at least one electrode pattern.

15. The input recognition device of claim 14, wherein a space between the plurality of electrode lines has different widths, wider at a center of the at least one electrode pattern and narrower at an edge portion of the at least one electrode pattern.

16. The input recognition device of claim 13, wherein a flat plate formed by the at least one electrode pattern and a flat plate formed by an additional electrode pattern form separate layers.

17. The input recognition device of claim 13, wherein each of the center electrode line, the adjacent electrode lines and the next electrode lines has a constant width over a full length thereof.