Display device-integrated touch screen panel

• US 8,890,830 B2
• Filed: 11/13/2012
• Issued: 11/18/2014
• Est. Priority Date: 07/24/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Choi, Jae-Woo
• Primary Examiner(s): Chow, Van
• Application Number:
  US13/675,755
• Publication Number:
  US 20140028582A1
• Time in Patent Office: 735 Days
• Field of Search: 345/173
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 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 display device-integrated touch screen panel including an upper substrate and a lower substrate having a display region and a non-display region outside of the display region and including a first non-display region and a second non-display region at an outer side of the first non-display region, a plurality of sensing patterns on the upper substrate in the display region, a plurality of sensing lines located on the upper substrate in the non-display region, and coupled to the sensing patterns, a first guard ring pattern adjacent an edge of the first non-display region and surrounding the plurality of sensing lines, a sealing material between the upper substrate and the lower substrate in the non-display region, and a second guard ring pattern overlapping the sealing material in the non-display region, the second guard ring pattern being electrically coupled to the first guard ring pattern and including a transparent conductive material.

Claims

1. A display device-integrated touch screen panel comprising:

an upper substrate;

a lower substrate, the upper substrate and the lower substrate having;

a display region; and

a non-display region at an outer side of the display region and comprising a first non-display region and a second non-display region at an outer side of the first non-display region;

a plurality of sensing patterns on the upper substrate in the display region;

a plurality of sensing lines located on the upper substrate in the non-display region, and coupled to the sensing patterns;

a first guard ring pattern adjacent an edge of the first non-display region and surrounding the plurality of sensing lines;

a sealing material between the upper substrate and the lower substrate in the non-display region; and

a second guard ring pattern overlapping the sealing material in the non-display region, the second guard ring pattern being electrically coupled to the first guard ring pattern and comprising a transparent conductive material.

2. The display device-integrated touch screen panel according to claim 1, wherein the sensing lines and the first guard ring pattern comprise a low resistance material.

3. The display device-integrated touch screen panel according to claim 1, further comprising an insulating layer on the upper substrate,

wherein the second guard ring pattern contacts the insulating layer in the non-display region, and directly contacts the first guard ring pattern through a contact hole in the insulating layer above the first guard ring pattern.

4. The display device-integrated touch screen panel according to claim 1, further comprising a third guard ring pattern at an edge of the second non-display region and surrounding an area above the sealing material.

5. The display device-integrated touch screen panel according to claim 4, wherein the third guard ring pattern comprises a low resistance metal material.

6. The display device-integrated touch screen panel according to claim 4, further comprising an insulating layer on the upper substrate,

wherein the second guard ring pattern contacts the insulating layer in the non-display region, and directly contacts the third guard ring pattern through a contact hole in the insulating layer above the third guard ring pattern.

7. The display device-integrated touch screen panel according to claim 1, wherein the sensing patterns comprise:

first sensing cells coupled to each other for each row line in a first direction;

first connecting lines coupling the first sensing cells in the first direction;

second sensing cells coupled to each other for each column line in a second direction; and

second connecting lines coupling the second sensing cells in the second direction.

8. The display device-integrated touch screen panel according to claim 7, wherein the sensing patterns are at a same layer.

9. The display device-integrated touch screen panel according to claim 8, wherein the sensing cells and the second connecting lines are integrally formed.

10. The display device-integrated touch screen panel according to claim 9, further comprising an insulating layer located at crossing regions of the first connecting lines and the second connecting lines.

11. The display device-integrated touch screen panel according to claim 7, wherein the sensing patterns are at an outer surface of the upper substrate.

12. The display device-integrated touch screen panel according to claim 1, wherein the upper substrate comprises a sealing substrate of an organic light emitting display device.

13. The display device-integrated touch screen panel according to claim 1, further comprising:

a polarizing film attached to the upper substrate on which the sensing patterns, the sensing lines, and the first and second guard ring patterns are formed; and

a window substrate attached to the polarizing film.

14. The display device-integrated touch screen panel according to claim 13, further comprising a black matrix layer on the window substrate and corresponding to the non-display region.

15. The display device-integrated touch screen panel according to claim 13, wherein the polarizing film comprises:

a polarizer;

a phase difference compensating layer; and

a transparent adhesive for supporting the polarizer and for attaching the phase difference compensating layer to the polarizer.

16. The display device-integrated touch screen panel according to claim 15, wherein the display device-integrated touch screen panel is flexible.

17. The display device-integrated touch screen panel according to claim 13, wherein the window substrate comprises at least one of Polymethyl Methacrylate, (PMMA), acryl, or polyester (PET).

18. The display device-integrated touch screen panel according to claim 17, wherein the display device-integrated touch screen panel is flexible.