US 12,282,632 B2
Infrared touch screen for reducing touch height of touch panel
Kaixiang Huang, Shenzhen (CN); Huaqin Deng, Shenzhen (CN); and Jian Lv, Shenzhen (CN)
Assigned to SHENZHEN TIMELINK TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by SHENZHEN TIMELINK TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed on Feb. 22, 2024, as Appl. No. 18/584,285.
Claims priority of application No. 202320644789.9 (CN), filed on Mar. 16, 2023.
Prior Publication US 2024/0310960 A1, Sep. 19, 2024
Int. Cl. G06F 3/042 (2006.01)
CPC G06F 3/0421 (2013.01) [G06F 2203/04109 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An infrared touch screen, comprising:
a touch panel;
a profile frame surrounding an edge of the touch panel, wherein the profile frame is provided with a cavity having an opening;
an infrared module provided in the cavity and located below the touch panel; and
a filter strip provided at the opening;
wherein the filter strip is provided with at least two reflective arc surfaces, an infrared light is emitted by the infrared module and is emitted from the opening through a total reflection of the reflective arc surface;
the at least two reflective arc surfaces comprise a first reflective arc surface and a second reflective arc surface opposite to the first reflective arc surface, the first reflective arc surface fits closely with the shape of the profile frame and a first gap is formed between the first reflective arc surface and the profile frame, and the second reflective arc surface fits closely with the shape of the profile frame and a second gap is formed between the second reflective arc surface and the profile frame.