Flat panel display with integrated touch screen panel
A flat panel display having an integrated touch screen panel directly formed on a sealing thin film is disclosed. In the display, sensing lines of the touch screen panel are formed to extend to a substrate of the display panel, on which organic light emitting elements are formed, so that the touch screen panel and the display panel are connected to a flexible printed circuit board, thereby simplifying manufacturing processes and decreasing product cost.
1. A display device, comprising:
a substrate comprising a first area having a pixel area and a second area adjacent to the first area;
a plurality of pixels in the pixel area of the substrate;
a sealing thin film covering the first area of the substrate and comprising an inclined surface;
a plurality of sensing cells formed over a top surface of the sealing thin film and configured to sense a touch;
a plurality of sensing lines coupled to the sensing cells and formed over the sealing thin film and over the second area of the substrate;
a driving circuit electrically connected to the sensing cells through the sensing lines; and
an insulating layer,
wherein:
the inclined surface is formed between the sensing cells and the driving circuit;
the sensing lines comprises at least one inclined portion along the inclined surface of the sealing film;
the sensing cells comprise a plurality of first sensing cells connected to each other along each line in a first direction and a plurality of second sensing cells connected to each other along each line in a second direction intersected with the first direction;
two adjacent first sensing cells are electrically connected by a first connection pattern and two adjacent second sensing cells area electrically connected by a second connection pattern; and
the insulating layer is between the first connection pattern and the second connection pattern.
2. The display device according to claim 1 , wherein:
a first overlap portion of the sensing lines overlaps the second area of the substrate and a second overlap portion of the sensing lines overlaps the sealing thin film; and
a first shortest distance between the first overlap portion and the substrate is less than a second shortest distance between the second overlap portion and the substrate.
3. The display device according to claim 1 , wherein:
the sensing lines comprise:
first sensing lines electrically connected to the first sensing cells; and
second sensing lines electrically connected to the second sensing cells;
at least one of the second sensing lines comprises:
a first portion extending in the second direction from a corresponding second sensing cell; and
a second portion extending in the first direction from an end of the first portion; and
the other at least one of the second sensing lines comprises:
the first portion; and
a third portion extending in a direction opposite to the first direction from the first portion.
4. The display device according to claim 3 , wherein the first portion, the second portion, and the third portion are formed over the sealing thin film.
5. The display device according to claim 3 , wherein at least one of the first sensing lines comprises a fourth portion extending in the first direction from a corresponding first sensing cell and a fifth portion extending in the second direction from an end of the fourth portion.
6. The display device according to claim 1 , wherein the driving circuit is configured to drive the plurality of sensing cells.
7. The display device according to claim 6 , wherein the driving circuit is further configured to drive the plurality of pixels.
8. The display device according to claim 1 , wherein the sensing lines are electrically connected to the driving circuit through wiring lines.
9. The display according to claim 1 , wherein the sensing lines comprise a different material from the sensing cells.
10. The display according to claim 1 , wherein the driving circuit is located on the second area of the substrate.
11. A display device, comprising:
a substrate comprising a first area having a pixel area and a second area adjacent to the first area;
a plurality of pixels in the pixel area of the substrate;
a sealing thin film covering the first area of the substrate and comprising an inclined surface;
a plurality of first sensing cells formed over a top surface of the sealing thin film and connected to each other along each line in a first direction;
a plurality of second sensing cells formed over the top surface of the sealing thin film and connected to each other along each line in a second direction intersected with the first direction;
a plurality of first sensing lines coupled to the first sensing cells and formed over the sealing thin film and over the second area of the substrate;
a plurality of second sensing lines coupled to the second sensing cells and formed over the sealing thin film and over the second area of the substrate;
a driving circuit electrically connected to the first and second sensing cells through the first and second sensing lines, respectively; and
an insulating layer,
wherein:
the inclined surface is formed between the first and second sensing cells and the driving circuit;
the first sensing lines and the second sensing lines comprises at least one inclined portion along the inclined surface of the sealing film;
two adjacent first sensing cells are electrically connected by a first connection pattern and two adjacent second sensing cells area electrically connected by a second connection pattern;
the insulating layer is between the first connection pattern and the second connection pattern;
at least one of the second sensing lines comprises a first portion extending in the second direction from a corresponding second sensing cell and a second portion extending in the first direction from an end of the first portion; and
the other at least one of the second sensing lines comprises the first portion and a third portion extending in a direction opposite to the first direction from the first portion.
12. The display device according to claim 11 , wherein the first portion, the second portion, and the third portion are formed over the sealing thin film.
13. The display device according to claim 11 , wherein at least one of the first sensing lines comprises a fourth portion extending in the first direction from a corresponding first sensing cell and a fifth portion extending in the second direction from an end of the fourth portion.
14. The display device according to claim 11 , wherein:
a first overlap portion of the first and second sensing lines overlaps the second area of the substrate and a second overlap portion of the first and second sensing lines overlaps the sealing thin film; and
a first shortest distance between the first overlap portion and the substrate is less than a second shortest distance between the second overlap portion and the substrate.
15. The display device according to claim 11 , wherein the driving circuit is configured to drive the first and second sensing cells.
16. The display device according to claim 15 , wherein the driving circuit is configured to further drive the plurality of pixels.