TOUCH SCREEN PANEL

• US 20140002378A1
• Filed: 12/20/2012
• Published: 01/02/2014
• Est. Priority Date: 06/27/2012
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Kim, Dong Sup, Seo, Jung Seok
• Granted Patent: US 9,104,254 B2
• 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 3/044 by capacitive means
• 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
• 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

Disclosed is a touch screen panel for improving touch sensitivity, the screen panel comprising a first electrode in a first direction; and a second electrode, insulated from the first electrode, in a second direction perpendicular to the first direction, wherein the first electrode includes a plurality of first patterns, and a second pattern formed as one body with the plurality of first patterns so as to connect the plurality of first patterns in the first direction; the second electrode includes a plurality of third patterns, and a fourth pattern formed as one body with the plurality of third patterns so as to connect the plurality of third patterns in the second direction; and the first pattern is provided at a predetermined distance in a horizontal direction from the third pattern, the second pattern crosses the fourth pattern, and an area of the first electrode is larger than an area of the second electrode.

Claims

1. A touch screen panel comprising:

a first electrode disposed in a first direction; and

a second electrode insulated from the first electrode, and disposed in a second direction being perpendicular to the first direction,

wherein the first electrode includes a plurality of first patterns, and a second pattern formed as one body with the plurality of first patterns so as to connect the plurality of first patterns in the first direction;

the second electrode includes a plurality of third patterns, and a fourth pattern formed as one body with the plurality of third patterns so as to connect the plurality of third patterns in the second direction; and

the first pattern is provided at a predetermined distance in a horizontal direction from the third pattern, the second pattern crosses the fourth pattern, and an area of the first electrode is larger than an area of the second electrode.

2. The touch screen panel according to claim 1, wherein the area of second electrode is about 20%˜

50% in comparison with the area of first electrode.

3. The touch screen panel according to claim 1, wherein a width of the second pattern is the same as or smaller than a width of the fourth pattern.

4. The touch screen panel according to claim 1, wherein the fourth pattern is bar shaped and extends in the second direction.

5. The touch screen panel according to claim 1, wherein polygonal-shaped two of the third patterns are arranged symmetrically with respect to the fourth pattern.

6. The touch screen panel according to claim 1, wherein an area of the fourth pattern occupies about 10%˜

50% of the entire area of the second electrode.

7. The touch screen panel according to claim 1, wherein a horizontal distance between the first pattern and the third pattern is about 30 μ

m˜

700 μ

m.

8. The touch screen panel according to claim 1, further comprising a first dummy pattern which is provided at a predetermined distance from the first electrode, and overlaps with the second electrode.

9. The touch screen panel according to claim 8, wherein the first electrode and the first dummy pattern are disposed in the same layer.

10. The touch screen panel according to claim 1, further comprising a second dummy pattern which is provided at a predetermined distance from the second electrode, and overlaps with the first electrode.

11. The touch screen panel according to claim 10, wherein the second electrode and the second dummy pattern are disposed in the same layer.

12. The touch screen panel according to claim 10, wherein the second dummy pattern includes a plurality of dummy pieces arranged at fixed intervals.