US 11,835,983 B1
Touch panel and touch display device
Wang Li, Shenzhen (CN); and Baohong Kang, Shenzhen (CN)
Assigned to HKC CORPORATION LIMITED, Shenzhen (CN)
Filed by HKC CORPORATION LIMITED, Shenzhen (CN)
Filed on Jun. 8, 2023, as Appl. No. 18/331,497.
Claims priority of application No. 202211205860.X (CN), filed on Sep. 30, 2022.
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0446 (2019.05) [G06F 3/0412 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A touch panel, comprising:
a display area; and
a non-display area,
wherein the display area is provided with a plurality of row electrodes arranged at intervals along a first direction and a plurality of column electrodes arranged at intervals along a second direction, the first direction is perpendicular to the second direction, and the non-display area is provided with a driving unit electrically connected to each row electrode;
each row electrode is provided with a plurality of first open holes, and each column electrode comprises a plurality of electrode blocks; each electrode block is arranged in the first open hole, and the electrode block is insulated from the row electrode;
each electrode block is provided with a second open hole, and a plurality of self-capacitance electrodes are provided in the display area; each self-capacitance electrode is arranged in the second open hole, and the self-capacitance electrode is insulated from the electrode block;
each self-capacitance electrode and each electrode block are electrically connected to the driving unit;
the second open hole and the first open hole are formed by a same etching process, so that the column electrode and the self-capacitance electrode are formed on the row electrode in the same etching process;
the display area is further provided with a plurality of connecting bridges, and the non-display area is further provided with a plurality of mutual capacitance detecting signal lines and a plurality of mutual capacitance driving signal lines;
each connecting bridge is connected to two adjacent electrode blocks in the column electrode; each mutual capacitance detecting signal line is connected to the driving unit and the row electrode, and each mutual capacitance driving signal line is connected to the driving unit and the electrode block of the column electrode;
the touch panel is provided with a plurality of self-capacitance touch signal lines, and each self-capacitance touch signal line is connected to the driving unit and the self-capacitance electrode;
wherein the touch panel is provided with a floating touch state and a mutual capacitance touch detection state;
in the floating touch state, each self-capacitance electrode is powered on, and each row electrode and each electrode block are powered off; and
in the mutual capacitance touch detection state, each self-capacitance electrode is powered off, and each row electrode and each electrode block are powered on.