US 12,135,848 B2
Mini LED touch panel and its driving method and preparation method
Bao Zha, Guangdong (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Appl. No. 17/623,312
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
PCT Filed Dec. 22, 2021, PCT No. PCT/CN2021/140592
§ 371(c)(1), (2) Date Dec. 28, 2021,
PCT Pub. No. WO2023/108768, PCT Pub. Date Jun. 22, 2023.
Claims priority of application No. 202111545171.9 (CN), filed on Dec. 16, 2021.
Prior Publication US 2024/0069666 A1, Feb. 29, 2024
Int. Cl. G06F 3/041 (2006.01); G09G 3/32 (2016.01)
CPC G06F 3/04164 (2019.05) [G06F 3/04166 (2019.05); G09G 3/32 (2013.01); G06F 2203/04103 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A mini light-emitting diode (LED) touch panel, comprising: a plurality of touch units distributed in an array manner, a plurality of touch addressing lines arranged in a first direction, and a plurality of touch reading lines arranged in a second direction, wherein the first direction and the second direction are perpendicular to each other;
wherein each of the touch units comprises a switching transistor and a touch conductive layer, the touch conductive layer is made of indium tin oxide material, and the touch conductive layer is distributed within gaps between a plurality of corresponding sub-pixels and extends into the corresponding sub-pixels; wherein a gate of the switching transistor is connected to a respective one of the touch addressing lines, a source of the switching transistor is connected to the touch conductive layer, and a drain of the switching transistor is connected to a respective one of the touch reading lines;
wherein each of the sub-pixels comprises a driving transistor and a mini LED lamp bead connected to each other, and the driving transistor of the sub-pixel is connected to the mini LED lamp bead via the touch conductive layer; and
wherein the switching transistor and the touch conductive layer in each of the touch units are configured such that based on the switching transistors, under the control of the touch addressing lines, electric charges accumulated in the touch conductive layer are extracted via the touch reading lines, and
based on a variation of the electric charges, a capacitance change in the corresponding sub-pixels is sensed.