Display device integrated with touch screen panel

• US 9,046,952 B2
• Filed: 05/03/2012
• Issued: 06/02/2015
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Gun-Shik, Lee, Dong-Ki
• Primary Examiner(s): Mengistu, Amare
• Assistant Examiner(s): Figueroa-Gibson, Gloryvid
• Application Number:
  US13/463,528
• Publication Number:
  US 20130162549A1
• Time in Patent Office: 1,125 Days
• Field of Search: 349/80, 349104-111, 345/22, 345/42, 345/88, 345173-178, 345/589, 345/690, 345694-696
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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

Abstract

A display device integrated with a touch screen panel. The display device includes a plurality of pixels formed on a substrate, color filter patterns on a surface of the display device, corresponding to the pixels and containing a conductive material, and a black matrix formed between the color filter patterns. Each of the color filter patterns is electrically connected to an adjacent one of the color filter patterns to be used as sense electrodes of a touch screen panel.

Claims

1. A display device integrated with a touch screen panel, comprising:

a plurality of pixels on a substrate;

a plurality of color filter patterns on a surface of the display device, corresponding to the pixels and containing a conductive material; and

a black matrix between the color filter patterns,

wherein each of the color filter patterns is electrically connected to an adjacent one of the color filter patterns to become a plurality of sense electrodes of the touch screen panel, and

wherein the plurality of color filter patterns and the plurality of sense electrodes are same elements, and

wherein at least a portion of the black matrix is interposed between the color filter patterns.

2. The display device integrated with the touch screen panel as claimed in claim 1,

wherein the sense electrodes comprise a plurality of first sense electrodes connected to each other in a first direction and a plurality of second sense electrodes connected to each other in a second direction, and

wherein the first sense electrodes are electrically connected to each other by a plurality of first connection lines for connecting the first sense electrodes in the first direction, and the second sense electrodes are electrically connected to each other by a plurality of second connection lines for connecting the second sense electrodes in the second direction.

3. The display device integrated with the touch screen panel as claimed in claim 2, wherein the first sense electrodes and the second sense electrodes are configured so that the first sense electrodes adjacent in a diagonal direction are connected to each other, and the second sense electrodes adjacent in a diagonal direction are connected to each other.

4. The display device integrated with the touch screen panel as claimed in claim 3, wherein the first sense electrodes are connected to the adjacent first sense electrodes in a form of up and down zigzag, and the second sense electrodes are connected to the adjacent second sense electrodes in a form of side to side zigzag.

5. The display device integrated with the touch screen panel as claimed in claim 2, wherein the first connection lines and the second connection lines are in a region that overlaps the black matrix.

6. The display device integrated with the touch screen panel as claimed in claim 2, wherein an insulating layer is between the first connection lines and the second connection lines in a region where the first connection lines and the second connection lines intersect each other.

7. The display device integrated with the touch screen panel as claimed in claim 2, wherein each of the first and second sense electrodes is realized by a group of color filter patterns containing at least two conductive materials.

8. The display device integrated with the touch screen panel as claimed in claim 7, wherein the color filter patterns included in the group of the color filter patterns realized as one of the first or second sense electrodes are electrically connected to each other by an internal connection pattern.

9. The display device integrated with the touch screen panel as claimed in claim 1, wherein the conductive material comprises metal nano particle, nano wire, and/or graphene.

10. The display device integrated with the touch screen panel as claimed in claim 1, wherein the black matrix is on an entire region excluding the color filter patterns on the same surface as the color filter patterns.

11. The display device integrated with the touch screen panel as claimed in claim 1, wherein each of the pixels comprises an organic light emitting diode (OLED) and a driving transistor connected to the OLED.

12. The display device integrated with the touch screen panel as claimed in claim 11, wherein an encapsulated thin film is on an entire surface of the OLED.

13. The display device integrated with the touch screen panel as claimed in claim 12, wherein the color filter patterns containing the conductive material and corresponding to the plurality of pixels are on the encapsulated thin film.

14. A method of forming of a display device integrated with a touch screen panel, the method comprising:

forming a plurality of pixels on a substrate;

forming a plurality of color filter patterns to face the substrate, to correspond to the pixels and to contain a conductive material; and

forming a black matrix between the color filter patterns,

wherein the forming of the color filter patterns comprises forming a plurality of sense electrodes of the touch screen panel, and the forming of the sense electrodes comprises electrically connecting each of the color filter patterns to an adjacent one of the color filter patterns,

wherein the plurality of color filter patterns and the plurality of sense electrodes are same elements, and

wherein at least a portion of the black matrix is interposed between the color filter patterns.

15. The method as claimed in claim 14,

wherein the forming of the sense electrodes comprises forming a plurality of first sense electrodes connected to each other in a first direction and a plurality of second sense electrodes connected to each other in a second direction, and

wherein the first sense electrodes are formed to be electrically connected to each other by a plurality of first connection lines for connecting the first sense electrodes in the first direction, and the second sense electrodes are formed to be electrically connected to each other by a plurality of second connection lines for connecting the second sense electrodes in the second direction.

16. The method as claimed in claim 15, wherein the first sense electrodes and the second sense electrodes are configured so that the first sense electrodes adjacent in a diagonal direction are connected to each other, and the second sense electrodes adjacent in a diagonal direction are connected to each other.

17. The method as claimed in claim 16, wherein the first sense electrodes are connected to the adjacent first sense electrodes in a form of up and down zigzag, and the second sense electrodes are connected to the adjacent second sense electrodes in a form of side to side zigzag.

18. The method as claimed in claim 15, wherein the first connection lines and the second connection lines are formed in a region that overlaps the black matrix.

19. The method as claimed in claim 15, further comprising:

interposing an insulating layer between the first connection lines and the second connection lines in a region where the first connection lines and the second connection lines intersect each other.

20. The method as claimed in claim 14, wherein the conductive material comprises metal nano particle, nano wire, and/or graphene.

21. A display device integrated with a touch screen panel, comprising:

a plurality of pixels on a substrate;

a plurality of color filter patterns on a surface of the display device, corresponding to the pixels and containing a conductive material; and

a black matrix between the color filter patterns,

wherein each of the color filter patterns is electrically connected to an adjacent one of the color filter patterns to become a plurality of sense electrodes of the touch screen panel,

wherein the plurality of color filter patterns and the plurality of sense electrodes are same elements,

wherein the plurality of sense electrodes overlaps emission regions of the plurality of pixels in a direction normal to the surface of the display device, and

wherein at least a portion of the black matrix is interposed between the color filter patterns.