Touch panel and manufacturing method thereof

• US 9,832,861 B2
• Filed: 10/15/2010
• Issued: 11/28/2017
• Est. Priority Date: 10/16/2009
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Byung Soo, Lee, Keun Sik, Seo, Chung Won, Jo, Ji Won, Hong, Hyuk Jin, Lee, Yong In
• Primary Examiner(s): EARLES, BRYAN E
• Application Number:
  US13/501,919
• Publication Number:
  US 20120206394A1
• Time in Patent Office: 2,601 Days
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires
• CPC Class Codes: H05K 1/0274 Optical details, e.g. printed circuits comprising integral optical means H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42
• CPC Class Codes: H05K 1/0296 Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18
• CPC Class Codes: H05K 1/09 Use of materials for the conductive, e.g. metallic pattern
• CPC Class Codes: Y10T 29/49155 Manufacturing circuit on or in base

Abstract

A touch panel is provided. The touch panel includes a substrate, a jumper metal, a first insulation layer, first and second conductive patterns, first and second metal electrodes, and a second insulation layer. The jumper metal is formed on the substrate. The first insulation layer includes an opening and is formed on the jumper metal. The first and second conductive patterns are formed on the first insulation layer. The first and second metal electrodes are respectively connected to end portions of the first and second conductive patterns. The second insulation layer is formed on the first and second conductive patterns and the first and second metal electrodes. One of the first and second conductive patterns is connected by the jumper metal exposed through the opening of the first insulation layer.

Claims

1. A touch panel comprising:

a substrate;

a jumper metal having two outermost ends on a top surface of the substrate;

a first insulation layer comprising an opening, on the jumper metal;

a second insulation layer on the first insulation layer;

a first row extending in a first direction and comprising a plurality of first conductive patterns on the first insulation layer;

a second row extending in a second direction different from the first direction and comprising a plurality of second conductive patterns on the first insulation layer;

a connection part connecting the first conductive patterns;

a first metal electrode connected to an outermost end portion of the first row; and

a second metal electrode connected to an outermost end portion of the second row;

wherein two second conductive patterns of the second row are connected by the jumper metal exposed through the opening of the first insulation layer;

wherein both outermost ends of the jumper metal are exposed through the first insulation layer, such that the outermost ends of the jumper metal do not vertically overlap with the first insulation layer;

wherein a width of the jumper metal, measured in a fourth direction parallel to the top surface of the substrate, is narrower than a width of the opening measured in the fourth direction;

wherein the second insulation layer is disposed on the first metal electrode and the second metal electrode;

wherein a width of the opening is wider than a width of the connection part;

wherein the connection part is not vertically overlapped with the opening;

wherein the jumper metal is vertically overlapped with the opening;

wherein a length of the connection part, measured in the first direction, is shorter than a length of the jumper metal, measured in the second direction;

wherein a length of the jumper metal, measured in the second direction, is smaller than a length of each second conductive pattern, measured in the second direction;

wherein the jumper metal comprises an overlapping area overlapped, in a third direction perpendicular to the first and second directions, with the connection part or a second conductive pattern of the plurality of second conductive patterns;

wherein the jumper metal further comprises a non-overlapping area that is not overlapped, in the third direction, with the connection part or any second conductive pattern;

wherein a length of the non-overlapping area, measured in the second direction, is smaller than a length of the overlapping area, measured in the second direction; and

wherein both the first metal electrode and the second metal electrode are disposed on a different plane from both the first conductive patterns and the second conductive patterns.

2. The touch panel according to claim 1, wherein the jumper metal is a conductive transparent metal.

3. The touch panel according to claim 1, wherein the first and second conductive patterns and the first and second metal electrodes comprise the same material.

4. The touch panel according to claim 1, wherein:

the first conductive pattern and the first metal electrode comprise the same material, and

the second conductive pattern and the second metal electrode comprise the same material.

5. The touch panel according to claim 1, wherein the two second conductive patterns connected by the jumper metal are adjacent to each other.

6. The touch panel according to claim 1, wherein the first direction is perpendicular to the second direction.

14. The touch panel according to claim 1, wherein the jumper metal comprises the same material as that of the first and second metal electrodes.

15. The touch panel according to claim 1, wherein a bottom surface of the jumper metal is only in direct physical contact with the substrate.

20. The touch panel according to claim 1, wherein each second conductive pattern has a lateral surface parallel to a lateral surface of the connection part.

7. A method of manufacturing a touch panel, the method comprising:

forming a jumper metal having two outermost ends on a top surface of the substrate;

forming a first insulation layer comprising an opening, on the jumper metal;

forming a first row extending in a first direction and comprising a plurality of first conductive patterns on the first insulation layer;

forming a second row extending in a second direction different from the first direction and comprising a plurality of second conductive patterns on the first insulation layer;

forming a connection part connecting the first conductive patterns;

forming a first metal electrode connected to an outermost end portion of the first row;

forming a second metal electrode connected to an outermost end portion of the second row; and

forming a second insulation layer on the first and second conductive rows and the first and second metal electrodes;

wherein two second conductive patterns of the second row are connected by the jumper metal exposed through the opening of the first insulation layer;

wherein both outermost ends of the jumper metal are exposed by the opening of the first insulation layer, such that the outermost ends of the jumper metal and the first insulation layer do not vertically overlap;

wherein the jumper metal comprises the same material as that of the first and second metal electrodes;

wherein a width of the jumper metal, measured in a fourth direction parallel to the top surface of the substrate, is narrower than a width of the opening measured in the fourth direction;

wherein a bottom surface of the jumper metal is only in direct physical contact with the substrate;

wherein a width of the opening is wider than a width of the connection part;

wherein the connection part is not vertically overlapped with the opening;

wherein the jumper metal is vertically overlapped with the opening;

wherein a length of the connection part, measured in the first direction, is shorter than a length of the jumper metal, measured in the second direction;

wherein a length of the jumper metal, measured in the second direction, is smaller than a length of each second conductive pattern, measured in the second direction;

wherein the jumper metal comprises an overlapping area overlapped, in a third direction perpendicular to the first and second directions, with the connection part or a second conductive pattern of the plurality of second conductive patterns;

wherein the jumper metal further comprises a non-overlapping area that is not overlapped, in the third direction, with the connection part or any second conductive pattern;

wherein a length of the non-overlapping area, measured in the second direction, is smaller than a length of the overlapping area, measured in the second direction; and

wherein both the first metal electrode and the second metal electrode are disposed on a different plane from both the first conductive patterns and the second conductive patterns.

8. The method according to claim 7, wherein the jumper metal is a conductive transparent metal.

9. The method according to claim 7, wherein the first and second conductive patterns and the first and second metal electrodes comprise the same material.

10. The method according to claim 7, wherein:

the first conductive pattern and the first metal electrode comprise the same material, and

the second conductive pattern and the second metal electrode comprise the same material.

11. The method according to claim 7, wherein the two second conductive patterns connected by the jumper metal are adjacent to each other.

21. The method according to claim 7, wherein each second conductive pattern has a lateral surface parallel to a lateral surface of the connection part.

12. A touch panel comprising:

a substrate;

a jumper metal having two outermost ends on a top surface of the substrate;

a first insulation layer comprising an opening, on the jumper metal;

a second insulation layer on the first insulation layer;

a first row comprising a plurality of first conductive patterns on the first insulation layer;

a second row comprising a plurality of second conductive patterns on the first insulation layer;

a connection part connecting the first conductive patterns;

a first metal electrode connected to an outermost end portion of the first row; and

a second metal electrode connected to an outermost end portion of the second row;

wherein two second conductive patterns of the second row are connected by the jumper metal exposed through the opening of the first insulation layer;

wherein both outermost ends of the jumper metal are exposed through the first insulation layer, such that the outermost ends of the jumper metal do not vertically overlap with the first insulation layer;

wherein a width of the jumper metal, measured in a fourth direction parallel to the top surface of the substrate, is narrower than a width of the opening measured in the fourth direction;

wherein the second insulation layer is disposed on the first metal electrode and the second metal electrode;

wherein a width of the opening is wider than a width of the connection part;

wherein the connection part is not vertically overlapped with the opening;

wherein the jumper metal is vertically overlapped with the opening;

wherein a length of the connection part, measured in the first direction, is shorter than a length of the jumper metal, measured in the second direction;

wherein a length of the jumper metal, measured in the second direction, is smaller than a length of each second conductive pattern, measured in the second direction;

wherein the jumper metal comprises an overlapping area overlapped, in a third direction perpendicular to the first and second directions, with the connection part or a second conductive pattern of the plurality of second conductive patterns;

wherein the jumper metal further comprises a non-overlapping area that is not overlapped, in the third direction, with the connection part or any second conductive pattern;

wherein a length of the non-overlapping area, measured in the second direction, is smaller than a length of the overlapping area, measured in the second direction; and

wherein both the first metal electrode and the second metal electrode are disposed on a different plane from both the first conductive patterns and the second conductive patterns.

16. The touch panel according to claim 12, wherein the jumper metal comprises the same material as that of the first and second metal electrodes.

17. The touch panel according to claim 12, wherein a bottom surface of the jumper metal is only in direct physical contact with the substrate.

22. The touch panel according to claim 12, wherein each second conductive pattern has a lateral surface parallel to a lateral surface of the connection part.

13. A touch panel comprising:

a substrate;

a jumper metal having two outermost ends on the substrate;

a first insulation layer on the substrate;

a second insulation layer on the first insulation layer;

a first row comprising a plurality of first conductive patterns on the first insulation layer;

a second row comprising a plurality of second conductive patterns on the first insulation layer;

a connection part connecting the first conductive patterns;

a first metal electrode connected to an outermost end portion of the first row; and

a second metal electrode connected to an outermost end portion of the second row;

wherein two second conductive patterns of the second row are connected by the jumper metal;

wherein the second insulation layer is disposed on the first metal electrode and the second metal electrode;

wherein a width of the opening is wider than a width of the connection part;

wherein the connection part is not vertically overlapped with the opening;

wherein the jumper metal is vertically overlapped with the opening;

wherein a length of the connection part, measured in a first direction in which the first row extends, is shorter than a length of the jumper metal, measured in a second direction in which the second row extends;

wherein a length of the jumper metal, measured in the second direction, is smaller than a length of each second conductive pattern, measured in the second direction;

wherein the jumper metal comprises an overlapping area overlapped, in a third direction perpendicular to the first and second directions, with the connection part or a second conductive pattern of the plurality of second conductive patterns;

wherein the jumper metal further comprises a non-overlapping area that is not overlapped, in the third direction, with the connection part or any second conductive pattern;

wherein a length of the non-overlapping area, measured in the second direction, is smaller than a length of the overlapping area, measured in the second direction; and

wherein both the first metal electrode and the second metal electrode are disposed on a different plane from both the first conductive patterns and the second conductive patterns.

18. The touch panel according to claim 13, wherein the jumper metal comprises the same material as that of the first and second metal electrodes.

19. The touch panel according to claim 13, wherein a bottom surface of the jumper metal is only in direct physical contact with the substrate.

23. The touch panel according to claim 13, wherein each second conductive pattern has a lateral surface parallel to a lateral surface of the connection part.