US 11,868,458 B2
Apparatus and method for a multi-layer pixel structure
Henricus Derckx, St Asaph (GB); Wilhelmus Van Lier, St Asaph (GB); and Michael A. Cowin, St Asaph (GB)
Assigned to TOUCH BIOMETRIX LIMITED, St. Asaph (GB)
Appl. No. 17/616,477
Filed by TOUCH BIOMETRIX LIMITED, Wales (GB)
PCT Filed Jun. 5, 2020, PCT No. PCT/GB2020/051369
§ 371(c)(1), (2) Date Dec. 3, 2021,
PCT Pub. No. WO2020/245602, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 1907998 (GB), filed on Jun. 5, 2019; application No. 1908040 (GB), filed on Jun. 5, 2019; application No. 1909209 (GB), filed on Jun. 26, 2019; and application No. 1913912 (GB), filed on Sep. 26, 2019.
Prior Publication US 2022/0236833 A1, Jul. 28, 2022
Int. Cl. G06F 21/32 (2013.01); G06F 3/044 (2006.01); G06F 3/041 (2006.01); G06F 3/0354 (2013.01); G06F 21/44 (2013.01); H01L 27/12 (2006.01); G06V 40/12 (2022.01); G06V 40/13 (2022.01)
CPC G06F 21/32 (2013.01) [G06F 3/03543 (2013.01); G06F 3/03547 (2013.01); G06F 3/044 (2013.01); G06F 3/0446 (2019.05); G06F 3/041661 (2019.05); G06F 21/44 (2013.01); G06V 40/1359 (2022.01); H01L 27/127 (2013.01); H01L 27/1255 (2013.01); G06F 2203/0336 (2013.01); G06V 40/1306 (2022.01); H01L 27/1218 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pixel structure comprising a plurality of layers for providing a touch sensitive pixel of a sensing array, the layers comprising:
a thin film transistor;
a gate layer of the pixel structure comprising a gate region of the thin film transistor; and
a conductive layer deposited on a dielectric shield to be touched by an object to be sensed and arranged to provide a capacitive sensing electrode coupled to the thin film transistor,
wherein the dielectric shield provides a substrate on which the layers of the pixel structure are disposed,
wherein the thin film transistor comprises a plurality of layers deposited on the capacitive sensing electrode,
wherein the gate layer is connected to the capacitive sensing electrode.