US 12,366,940 B2
Touchscreen
Samuel Levin, Haifa (IL)
Assigned to Elbit Systems Ltd., Haifa (IL)
Filed by ELBIT SYSTEMS LTD., Haifa (IL)
Filed on Jun. 26, 2024, as Appl. No. 18/755,079.
Application 18/755,079 is a continuation of application No. 18/149,379, filed on Jan. 3, 2023, granted, now 12,032,793.
Application 18/755,079 is a continuation of application No. PCT/IL2021/050799, filed on Jun. 29, 2021.
Claims priority of application No. 275807 (IL), filed on Jul. 1, 2020.
Prior Publication US 2024/0345687 A1, Oct. 17, 2024
Int. Cl. G06F 3/042 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0428 (2013.01) [G06F 3/04166 (2019.05); G06F 3/0418 (2013.01); G06F 3/0421 (2013.01); G06F 2203/04107 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A touch screen (TS) apparatus comprising:
a display;
a frame with at least a first edge, a second edge, a third edge, and a fourth edge around the display, wherein the first edge and the second edge are positioned opposite each other, and the third edge and the fourth edge are positioned opposite each other;
at least a first sensor array, at least a second sensor array, at least a third sensor array, and at least a fourth sensor array, wherein each of the sensor arrays has a plurality of light transmitters and a plurality of light sensors, and wherein the at least first sensor array, the at least second sensor array, the at least third sensor array, and the at least fourth sensor array are disposed on the first edge, the second edge, the third edge, and the fourth edge of the frame, respectively, wherein the transmitters of the first sensor array are facing the light sensors on the second sensor array and the transmitters of the third sensor array are facing the light sensors on the fourth sensor array while positioned on opposing edges of the frame; and
at least one physical obstacle, located on the edges for reducing stray light scattered or reflected by another edge of the edges and arriving to the light sensors,
wherein the at least one physical obstacle is a plurality of windows positioned on a cover that is in a right angle to the display or tilted outwardly in respect to the display and in front of each of the light transmitters, and
wherein light from each of the light transmitters in one of the first sensor array, the second sensor array, the third sensor array, and the fourth sensor array is directed along a direct light path to be detected by at least one light sensor of other sensor array, and wherein when at least one direct path between one of the light transmitters in one sensor array and at least one corresponding light sensor of the other sensor array is blocked, a touch event is detected, and a location of the touch event is determined based on a location of the direct path that is blocked.