Digitizer and display device including the same
A digitizer including a flexible printed circuit film including a folding area configured to be folded, and having a first surface and a second surface opposite to the first surface, a plurality of first lines disposed on the first surface of the flexible printed circuit film and extending in a first direction, and a plurality of second lines disposed on the second surface of the flexible printed circuit film and extending in a second direction crossing the first direction, in which the first lines and the second lines define a grid area overlapping the folding area on a plane, and the flexible printed circuit film includes a penetration hole in the grid area.
1. A digitizer comprising:
a flexible printed circuit film including a folding area configured to be folded, and having a first surface and a second surface opposite to the first surface;
a plurality of first lines disposed on the first surface of the flexible printed circuit film and extending in a first direction; and
a plurality of second lines disposed on the second surface of the flexible printed circuit film and extending in a second direction crossing the first direction,
wherein:
the first lines and the second lines define a grid area overlapping the folding area on a plane; and
the flexible printed circuit film includes a penetration hole in the grid area.
2. The digitizer of claim 1 , wherein the penetration hole has substantially a rectangular shape on a plane.
3. The digitizer of claim 1 , further comprising a first step compensation layer disposed on the first surface of the flexible printed circuit film and covering the penetration hole.
4. The digitizer of claim 3 , further comprising a filling member disposed inside of the penetration hole.
5. The digitizer of claim 4 , wherein the filling member includes at least one of polyurethane, thermoplastic polyurethane, latex, acrylic resin, polyurethane foam, and polystyrene foam.
6. The digitizer of claim 4 , wherein the first step compensation layer includes substantially the same material as the filling member.
7. The digitizer of claim 3 , wherein the first step compensation layer includes an adhesive.
8. The digitizer of claim 7 , wherein the adhesive includes at least one of an optically transparent adhesive, an optically transparent resin, and a pressure-sensitive adhesive.
9. The digitizer of claim 3 , wherein the first compensation layer further covers the first lines.
10. The digitizer of claim 3 , further comprising a second compensation layer disposed on the second surface of the flexible printed circuit film and covering the penetration hole.
11. The digitizer of claim 1 , wherein the penetration hole includes:
a first penetration hole having substantially a U-shape on a plane; and
a second penetration hole having a shape substantially symmetrical to the first penetration hole with respect to a center of the grid area.
12. A display device comprising:
a display panel including a substrate and a display structure disposed on the substrate; and
a digitizer disposed under the display panel, the digitizer including:
a flexible printed circuit film including a folding area configured to be folded;
a plurality of first lines disposed on the flexible printed circuit film and extending in a first direction; and
a plurality of second lines disposed under the flexible printed circuit film and extending in a second direction crossing the first direction,
wherein:
the first lines and the second lines define a grid area overlapping the folding area on a plane; and
the flexible printed circuit film includes a penetration hole in the grid area.
13. The display device of claim 12 , wherein the penetration hole has substantially a rectangular shape on a plane.
14. The display device of claim 12 , wherein the digitizer further includes a first step compensation layer disposed on a first surface of the flexible printed circuit film and covering the penetration hole.
15. The display device of claim 14 , wherein the digitizer further includes a filling member disposed inside of the penetration hole.
16. The display device of claim 15 , wherein the first step compensation layer includes substantially the same material as the filling member.
17. The display device of claim 14 , wherein the first step compensation layer includes an adhesive.
18. The display device of claim 14 , wherein the digitizer further includes a second compensation layer disposed on a second surface of the flexible printed circuit film and covering the penetration hole.
19. The display device of claim 12 , further comprising a touch panel disposed on the display panel.
20. The display device of claim 12 , further comprising:
a protection film disposed between the display panel and the digitizer;
a buffer member disposed between the protection film and the digitizer; and
a support member disposed under the digitizer and including a plurality of slits in an area overlapping the folding area.