IP Library › Granted Patent US 12,189,906
Granted Patent B2
US 12,189,906 · App. 18/424,138 · Granted Jan 7, 2025

Touch device

Inventors: Aleksander Kocovski (Malmo, SE); Hakan Bergstrom (Torna-Hallestad, SE); Jens Thorvinger (Lund, SE)
Assignee: FlatFrog Laboratories AB
G06F3/0421G06F1/16G06F1/1652G06F3/041G06F2203/04102G06F2203/04103
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Quick Facts
Patent No.
US 12,189,906
App. No.
18/424,138
Filed
Jan 26, 2024
Granted
Jan 7, 2025
Kind
B2
Art Unit
2628
USPC
345/175
Abstract

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.

Claims (20)

1. A touch sensing apparatus comprising:

a display panel;

a plate including a top surface that comprises 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 one or more emitters; and

a frame assembly configured to support the display panel and the plate,

wherein a support portion of the frame assembly is curved along its length,

wherein the touch surface is curved along a first axis, wherein the first axis is substantially parallel to a propagation direction of the emitted light across the touch surface, and

wherein the support portion of the frame assembly is curved in a concave shape; the display panel is curved opposite to the frame assembly in a convex shape; and the touch surface is curved in a concave shape.

2. The touch sensing apparatus according to claim 1 , wherein a distance between the touch surface and the first axis is between 0 and 2.5 mm.

3. The touch sensing apparatus according to claim 1 , wherein the one or more detectors and the optical emitter is positioned 3 mm or less above the touch surface in a direction normal to the touch surface.

4. The touch sensing apparatus according to claim 1 , wherein a diagonal dimension of the plate is at least 55 inches.

5. The touch sensing apparatus according to claim 1 , wherein the plate has a width of at least 1900 mm.

6. The touch sensing apparatus according to claim 1 , wherein the plate has a height of at least 1070 mm.

7. The touch sensing apparatus according to claim 1 , wherein the distance between the touch surface and the first axis varies according to a concave curve.

8. The touch sensing apparatus according to claim 1 , wherein the touch surface is curved along a second axis.

9. The touch sensing apparatus according to claim 8 , wherein the second axis is substantially perpendicular to the first axis and in the same plane as the first axis.

10. The touch sensing apparatus according to claim 1 , wherein the frame assembly comprises support portions along each side of the plate, and wherein each support portion is curved.

11. The touch sensing apparatus according to claim 1 , wherein the frame assembly is configured to control a curvature of the plate.

12. The touch sensing apparatus according to claim 1 , wherein the frame assembly is configured to induce concavity to the plate.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 26, 2024
From: KOCOVSKI, ALEKSANDER; BERGSTROM, HAKAN; THORVINGER, JENS
To: FLATFROG LABORATORIES AB
Reel/Frame 066266/0077 →
Priority Claims (1)
SE 1630294-5 · Dec 7, 2016 · national
Continuity (8)
Continuation 18342674 · Jun 27, 2023
Continuation 18103118 · Jan 30, 2023
Continuation 17020489 · Sep 14, 2020
Continuation 16706438 · Dec 6, 2019
Continuation 16403283 · May 3, 2019
Continuation 16190907 · Nov 14, 2018
Continuation PCTSE2017051233 · Dec 7, 2017
Related Publication 20240192807A1 · Jun 13, 2024
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