Touch device
An assembly for holding and controlling curvature of a glass plate for an optical touch sensitive system is described. The assembly comprising a first frame element extending in a first plane and configured to extend at least partially around a panel; at least one second frame element extending in a second plane and forming a support portion for the plate, and at least one spacing element positioned at least partially between the support portion and the first frame element. The spacing element us configured to control a curvature of the first frame element and wherein the at least one second frame element is configured to engage the plate at the support portion, is attached to the first frame element, and is tiltable, by controlling the curvature of the first frame element with said spacing element, to control a curvature of the plate.
1. A touch sensing apparatus comprising:
a display panel;
a plate including a touch surface;
one or more emitters arranged adjacent to a periphery of the plate and configured to emit light across the touch surface of the plate;
a set of detectors arranged adjacent to the periphery of the plate and configured to receive light from the set of emitters; and
a frame assembly configured to support the display panel and the plate;
wherein the plate is curved along a first axis and along a second axis,
wherein the first axis is substantially parallel to a propagation direction of the emitted light across the touch surface,
wherein the second axis is substantially perpendicular to the first axis and in the same plane as the first axis; and
wherein a size of the plate is at least 55″.
2. The touch sensing apparatus according to claim 1 , wherein the plate has a first concave curvature along the first axis.
3. The touch sensing apparatus according to claim 1 , wherein the plate has a second concave curvature along the second axis.
4. The touch sensing apparatus according to claim 2 , wherein the first concave curvature is parabolic.
5. The touch sensing apparatus according to claim 1 , wherein the frame assembly is configured to induce concavity to the plate.
6. The touch sensing apparatus according to claim 2 , wherein the frame assembly is configured to induce concavity to the plate.
7. The touch sensing apparatus according to claim 3 , wherein the frame assembly is configured to induce concavity to the plate.
8. The touch sensing apparatus according to claim 1 , wherein the detectors and emitters are positioned 3 mm or less above the touch surface in a direction normal to the touch surface.
9. The touch sensing apparatus according to claim 1 , wherein the frame assembly comprises:
a first frame element configured to support the display panel; and
a second frame element arranged around at least a portion of the periphery of the plate, the second frame element having a first portion extending along an edge of the plate and a second portion opposed to the touch surface.
10. The touch sensing apparatus according to claim 1 , wherein a support portion of the frame assembly is curved along its length.
11. The touch sensing apparatus according to claim 10 , wherein the frame assembly comprises support portions along each side of the plate, and wherein each support portion is curved.
12. The touch sensing apparatus according to claim 1 , wherein the plate size is between 55″ to 86″.
13. The touch sensing apparatus according to claim 1 , wherein the plate has a width of at least 1900 mm.
14. The touch sensing apparatus according to claim 1 , wherein the plate has a height of at least 1070 mm.
15. The touch sensing apparatus according to claim 1 , wherein the plate is a glass plate.
16. The touch sensing apparatus according to claim 3 , wherein the second concave curvature is parabolic.
17. A touch sensing apparatus comprising:
a display panel;
a plate including a touch surface;
one or more emitters arranged adjacent to a periphery of the plate and configured to emit light across the touch surface of the plate;
a set of detectors arranged adjacent to the periphery of the plate and configured to receive light from the set of emitters, and
a frame assembly configured to support the display panel and the plate, wherein the plate is curved along a first axis and along a second axis,
wherein the first axis is substantially parallel to a propagation direction of the emitted light across the touch surface,
wherein the second axis is substantially perpendicular to the first axis and is on the same plane as the first axis, and
wherein the detectors and emitters are positioned 3 mm or less above the touch surface.
18. The touch sensing apparatus according to claim 17 , wherein the plate has a first concave curvature along the first axis.
19. The touch sensing apparatus according to claim 18 , wherein the frame assembly is configured to induce concavity to the plate.
20. The touch sensing apparatus according to claim 17 , wherein the plate has a second concave curvature along the second axis.
21. The touch sensing apparatus according to claim 18 , wherein the first concave curvature is parabolic.
22. The touch sensing apparatus according to claim 21 , wherein the frame assembly is configured to induce concavity to the plate.
23. The touch sensing apparatus according to claim 17 , wherein the frame assembly is configured to induce concavity to the plate.
24. The touch sensing apparatus according to claim 17 , wherein the frame assembly comprises:
a first frame element configured to support the display panel; and
a second frame element arranged around at least a portion of the periphery of the plate, the second frame element having a first portion extending along an edge of the plate and a second portion opposed to the touch surface.
25. The touch sensing apparatus according to claim 17 , wherein a support portion of the frame assembly is curved along its length.
26. The touch sensing apparatus according to claim 17 , wherein the frame assembly comprises support portions along each side of the plate, and wherein each support portion is curved.
27. The touch sensing apparatus according to claim 17 , wherein a size of the is at least 55″.
28. The touch sensing apparatus according to claim 17 , wherein a size of the plate is between 55″ to 86″.
29. The touch sensing apparatus according to claim 17 , wherein the plate is a glass plate.
30. The touch sensing apparatus according to claim 20 , wherein the second concave curvature is parabolic.