US 11,914,819 B2
Touch device
Aleksander Kocovski, Malmo (SE); Hakan Bergstrom, Torna-Hallestad (SE); and Jens Thorvinger, Lund (SE)
Assigned to FlatFrog Laboratories, Lund (SE)
Filed by Flatfrog Laboratories AB, Lund (SE)
Filed on Jan. 30, 2023, as Appl. No. 18/103,118.
Application 18/103,118 is a continuation of application No. 17/020,489, filed on Sep. 14, 2020, granted, now 11,579,731.
Application 17/020,489 is a continuation of application No. 16/706,438, filed on Dec. 6, 2019, granted, now 10,775,935, issued on Sep. 15, 2020.
Application 16/706,438 is a continuation of application No. 16/403,283, filed on May 3, 2019, granted, now 11,281,335, issued on Mar. 22, 2022.
Application 16/403,283 is a continuation of application No. 16/190,907, filed on Nov. 14, 2018, granted, now 10,282,035, issued on May 7, 2019.
Application 16/190,907 is a continuation of application No. PCT/SE2017/051233, filed on Dec. 7, 2017.
Claims priority of application No. 1630294-5 (SE), filed on Dec. 7, 2016.
Prior Publication US 2023/0168774 A1, Jun. 1, 2023
Int. Cl. G06F 3/042 (2006.01); G06F 1/16 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0421 (2013.01) [G06F 1/16 (2013.01); G06F 1/1652 (2013.01); G06F 3/041 (2013.01); G06F 2203/04102 (2013.01); G06F 2203/04103 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A touch sensing apparatus comprising:
a display panel;
a plate including a top surface that comprises a touch surface;
an optical emitter configured to emit light across the touch surface of the plate;
one or more detectors arranged adjacent to the periphery of the plate and configured to receive light from the optical emitter; and
a frame assembly, the frame assembly comprising:
a first frame element configured to support the display panel; and
a second frame element arranged around the periphery of the plate and configured to support the plate,
wherein the second frame element includes a first surface portion extending over an edge portion of the plate and a second surface portion arranged substantially parallel to a surface of the plate that defines a thickness of the plate,
wherein a curvature is induced in the plate when the plate is assembled with the frame assembly, such that the plate is curved along a first axis substantially parallel to a propagation direction of the emitted light across the touch surface and curved along a second axis substantially perpendicular to the first axis and in the same plane as the first axis, and
wherein a diagonal dimension of the assembled plate is at least 55 inches.