Touch display panel, operating method thereof and touch display device

An operating method of a touch display panel, the touch display panel including a base substrate, a plurality of electrode blocks arranged in an array on the base substrate, a first driving unit including a plurality of first pins, a plurality of switch transistors, and a second driving unit including at least a plurality of first sub-pins and a plurality of second sub-pins, wherein each electrode block is electrically connected to the first driving unit through at least one touch signal line;

• a drain of at least one first switch transistor is electrically connected to a same first sub-pin through a same first lead;
• and a drain of at least one second switch transistor is electrically connected to the same second sub-pin through a same second lead, the method comprising:
• a first touch phase, wherein:
• a switch transistor is in an off state;
• a first driving unit applies a driving signal to each electrode block through a touch signal line;
• and
• when a touch occurs, the first driving unit determines a position where the touch occurs by receiving difference of sensing signals outputted by each electrode block;
• and
• a second touch phase, wherein:
• the switch transistor is in an on state;
• the first driving unit stops applying the driving signal to each electrode block;
• the second driving unit applies the driving signal to each first electrode block through a first sub-pin;
• the second driving unit applies the sensing signal to each second electrode block through a second sub-pin;
• an electric field is formed between the first electrode block and the second electrode block;
• when a touch distance is less than or equal to a first distance, the touch occurs;
• the electric field between the first electrode block and the second electrode block changes;
• and
• the second driving unit detects a change amount of capacitance value between the first electrode block and the second electrode block to determine the position where the touch occurs, wherein the touch distance refers to a vertical distance between a touch body and the touch display panel.

A touch display device, comprising:

• a touch display panel, comprising:
• a base substrate, a plurality of electrode blocks arranged in an array on the base substrate;
• a first driving unit including a plurality of first pins;
• a plurality of switch transistors;
• and a second driving unit including at least a plurality of first sub-pins and a plurality of second sub-pins,
• wherein:
• each of the plurality of electrode blocks is electrically connected to the first driving unit through at least one touch signal line;
• one end of each touch signal line is electrically connected to one electrode block, and the other end of each touch signal line is electrically connected to the first pin in one-to-one correspondence;
• a source of each switch transistor is electrically connected to the first pin in one-to-one correspondence, and a drain of each switch transistor is electrically connected to the first sub-pin or the second sub-pin;
• a gate of each switch transistor is electrically connected to a same control signal line, and the control signal line is electrically connected to the second driving unit;
• the plurality of electrode blocks arranged in the array include at least one electrode block group, wherein each electrode block group includes a plurality of first electrode blocks and a plurality of second electrode blocks disposed around the plurality of first electrode blocks;
• the plurality of switch transistors include a plurality of first switch transistors and a plurality of second switch transistors, wherein the switch transistor electrically connected to the first electrode block is the first switch transistor, and the switch transistor electrically connected to the second electrode block is the second switch transistor;
• the drain of at least one first switch transistor is electrically connected to the same first sub-pin through a same first lead;
• and
• the drain of at least one second switch transistor is electrically connected to the same second sub-pin through a same second lead.