TOUCH SCREEN PANEL AND FABRICATING METHOD THEREOF

• US 20150029142A1
• Filed: 07/15/2014
• Published: 01/29/2015
• Est. Priority Date: 07/24/2013
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KIM, Hyung-Chul, PARK, Jung-Mok, JO, Jae-Hyung
• Application Number:
  US14/331,700
• Publication Number:
  US 20150029142A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 3/0443 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

Abstract

A touch screen panel includes a substrate, first sensing patterns, second sensing patterns, and an insulating layer. The first sensing patterns may be configured to include a plurality of first sensing cells separated from one another as independent patterns. The second sensing patterns may be configured to include a plurality of second sensing cells formed on the substrate. The insulating layer may be interposed between the first and second connecting patterns at intersection portions of the first connecting patterns and the second connecting patterns. The insulating layer may be an island-shaped independent pattern at each intersection portion. End portions of each first connecting pattern may electrically connect adjacent first sensing cells. A width of a first region of each first connecting pattern may be wider than that of a second region.

Claims

1. A touch screen panel, comprising:

a substrate;

first sensing patterns configured to include a plurality of first sensing cells separated from one another as independent patterns, and first connecting patterns connecting the first sensing cells along a first direction;

second sensing patterns configured to include a plurality of second sensing cells on the substrate, and second sensing patterns connecting the second sensing cells along a second direction; and

an insulating layer interposed between the first and second connecting patterns at intersection portions of the first connecting patterns and the second connecting patterns, the insulating layer being an island-shaped independent pattern at each intersection portion,

wherein end portions of each first connecting pattern electrically connect adjacent first sensing cells exposed to the outside of the island-shaped insulating layer while overlapping with the adjacent sensing cells, and

wherein a width of a first region of each first connecting pattern is wider than that of a second region, the first region overlapping an edge of the insulating layer, and the second region intersecting each second connecting pattern.

2. The touch screen panel as claimed in claim 1, wherein a width of a third region of each first connecting pattern, which is an edge region outside of the first region, is narrower than that of the first region.

3. The touch screen panel as claimed in claim 1, wherein the first region has a polygonal, elliptical, or circular shape.

4. The touch screen panel as claimed in claim 1, wherein the first sensing cells and the first connecting patterns include different materials.

5. The touch screen panel as claimed in claim 1, wherein the first sensing cells include a transparent electrode material, and the first connecting patterns include a metal.

6. The touch screen panel as claimed in claim 1, wherein the first connecting patterns are patterned in the shape of fine lines along the first direction, and

wherein only the width of both sides of the first region overlapped with the edge of the insulating layer is enlarged.

7. The touch screen panel as claimed in claim 1, wherein each first connecting pattern is on the insulating layer, and each second connecting pattern is under the insulating layer.

8. The touch screen panel as claimed in claim 1, wherein the second sensing cells are integrally patterned with the second connecting patterns along the second direction.

9. The touch screen panel as claimed in claim 1, wherein the first sensing cells and the second sensing cells are alternately distributed and disposed in a same layer on the substrate so as not to overlap with each other.

10. A method of fabricating a touch screen panel, the method comprising:

forming, on a substrate, a plurality of first sensing cells arranged in a first direction while being separated from each other as independent patterns, and a plurality of second sensing cells disposed between the first sensing cells and connected along a second direction;

forming an insulating layer as an island-shaped independent pattern on each second connecting pattern connecting the second sensing cells to each other; and

forming, on the insulating layer, first connecting patterns connecting the first sensing cells along the first direction,

wherein two end portions of each first connecting pattern are formed to overlap with adjacent first sensing cells exposed outside of the island-shaped insulating layer, and

wherein the first connecting patterns are patterned so that a width of a first region of each first connecting pattern, overlapped with an edge of the insulating layer, is formed wider than that of a second region intersecting each second connecting pattern.

11. The method as claimed in claim 10, wherein, in the patterning of the first connecting patterns, the first connecting patterns are patterned so that a width of a third region of each first connecting pattern, which is an edge region at the outside of the first region, is formed narrower than that of the first region.

12. The method as claimed in claim 10, wherein the first connecting patterns are patterned so that the first region of each first connecting pattern has a polygonal, elliptical or circular shape.

13. The method as claimed in claim 10, wherein the first connecting patterns are patterned in the shape of fine lines along the first direction, and

wherein only the width of both sides of the first region overlapped with the edge of the insulating layer is enlarged relative to the fine line shapes.

14. The method as claimed in claim 10, wherein the first sensing cells, the second sensing cells and the second connecting patterns are formed of a same material in a same process.

15. The method as claimed in claim 14, wherein the second sensing cells and the second connecting patterns are integrally patterned.

16. The method as claimed in claim 10, wherein the first sensing cells, the second sensing cells, and the second connecting patterns are formed of a transparent electrode material, and the first connecting patterns are formed of a metal.