Touch sensor sheet, touch display panel, and display apparatus
A touch display panel including: a backlight unit including a plurality of light-emitting devices; and a touch sensor sheet disposed on the backlight unit, comprising at least one hole corresponding to at least one of the plurality of light-emitting devices and a touch sensor configured to sense a user touch on the touch display panel.
1. A touch display panel comprising:
a backlight unit including a plurality of light-emitting devices;
a touch sensor sheet disposed directly on an upper surface of the backlight unit, comprising a plurality of holes and a touch sensor configured to sense a user touch on the touch display panel; and
an LCD cell disposed on the touch sensor sheet.
2. The touch display panel as claimed in claim 1 , further comprising an optical sheet configured to transfer light emitted from the plurality of light-emitting devices,
wherein the touch sensor sheet is disposed between the optical sheet and the backlight unit.
3. The touch display panel as claimed in claim 1 , wherein a position and size of the at least one hole corresponds to a position and size of the at least one of the plurality of light-emitting devices.
4. The touch display panel as claimed in claim 1 , wherein the touch sensor has a predefined pattern in a region of the touch sensor sheet excluding the at least one hole.
5. The touch display panel as claimed in claim 4 , wherein the touch sensor sheet comprises:
at least one first touch sensor sheet having a touch sensor pattern of a first direction configured to sense an X-axis coordinate of the user touch; and
at least one second touch sensor sheet having a touch sensor pattern of a second direction crossing the first direction configured to sense a Y-axis coordinate of the user touch.
6. The touch display panel as claimed in claim 4 , wherein the predefined pattern comprises a pattern surrounding the at least one hole.
7. The touch display panel as claimed in claim 1 , wherein the backlight unit is a direct type backlight unit.
8. The touch display panel as claimed in claim 1 , wherein a color of the touch sensor sheet is white.
9. A display apparatus comprising:
a touch display panel; and
a driver configured to drive the touch display panel,
wherein the touch display panel comprises:
a backlight unit including a plurality of light-emitting devices;
a touch sensor sheet disposed directly on an upper surface of the backlight unit, and comprising a plurality of holes and a touch sensor configured to sense a user touch on the touch display panel; and
an LCD cell disposed on the touch sensor sheet.
10. The display apparatus as claimed in claim 9 , wherein
the touch display panel further comprises an optical sheet configured to transfer light emitted from the plurality of light-emitting devices, and
the touch sensor sheet is disposed between the optical sheet and the backlight unit.
11. The display apparatus as claimed in claim 9 , wherein a position and size of the at least one hole corresponds to a position and size of the at least one of the plurality of light-emitting devices.
12. The display apparatus as claimed in claim 9 , wherein the touch sensor has a predefined pattern in a region of the touch sensor sheet excluding the at least one hole.
13. The display apparatus as claimed in claim 12 , wherein the touch sensor sheet comprises:
at least one first touch sensor sheet having a touch sensor pattern of a first direction configured to sense an X-axis coordinate of the user touch; and
at least one second touch sensor sheet having a touch sensor pattern of a second direction crossing the first direction configured to sense a Y-axis coordinate of the user touch.
14. The display apparatus as claimed in claim 12 wherein the predefined pattern comprises a pattern surrounding the at least one hole.
15. The display apparatus as claimed in claim 9 , wherein the backlight unit is a direct type backlight unit.
16. The display apparatus as claimed in claim 9 , wherein a color of the touch sensor sheet is white.
17. A touch sensor sheet comprising:
a first substrate having a plurality of first holes formed therein; and
at least one electromagnetic induction (EMI) type touch sensor disposed on a region of the first substrate excluding the plurality of first holes.
18. The touch sensor sheet according to claim 17 , wherein the at least one EMI type touch sensor comprises at least one respective elongated sensing coil.
19. The touch sensor sheet according to claim 18 , wherein a portion of the at least one elongated sensing coil surrounding the at least one first hole has a greater thickness than a portion of the at least one elongated sensing coil not surrounding the at least one first hole.
20. The touch sensor sheet according to claim 17 , further comprising:
a second substrate having at least one second hole, a size and position of the at least one second hole corresponding to a size and position of the at least one first hole; and
at least one second touch sensor disposed on a region of the second substrate excluding the at least one second hole,
wherein a pattern of the at least on EMI type touch sensor formed on the first substrate differs from a pattern of the at least one second touch sensor formed on the second substrate.