Touch display module, detection method thereof and touch display apparatus

A method for detecting a touch display module, comprising:

• acquiring first touch signals of a plurality of touch sensing electrodes and a first noise signal transmitted by a detection signal line, wherein the touch display module comprises a touch display panel, a crack detection module and a switch selection circuit, the touch display panel comprises a touch function layer and a target conductive layer that are arranged along a thickness direction of the touch display panel, the plurality of touch sensing electrodes and a plurality of first touch signal lines are arranged in the touch function layer, a conductive portion is arranged in the target conductive layer, and at least one first touch electrode is coupled to the conductive portion;
• and the touch display panel comprises the detection signal line, and the detection signal line is electrically connected to the crack detection module, wherein the detection signal line comprises a first wire section, a second wire section and a third wire section, the first wire section is electrically connected to the second wire section or the third wire section through the switch selection circuit, the second wire section is electrically connected to the acquisition processing module, and the third wire section is electrically connected to a crack detection signal pin of the crack detection module;
• the switch selection circuit is configured to selectively connect the first wire section to the second wire section or is configured to selectively connect the first wire section to the third wire section;
• and the first wire section is coupled to the conductive portion:
• wherein the switch selection circuit comprises:
• a first switch unit and a second switch unit;
• wherein a control terminal of the first switch unit is electrically connected to a first control signal line, a first terminal of the first switch unit is electrically connected to the first wire section, a second terminal of the first switch unit is electrically connected to the second wire section, and the first switch unit is configured to be turned on or off under control of the first control signal line;
• wherein a control terminal of the second switch unit is electrically connected to a second control signal line, a first terminal of the second switch unit is electrically connected to the first wire section, a second terminal of the second switch unit is electrically connected to the third wire section, and the second switch unit is configured to be turned on or off under control of the second control signal line;
• and wherein the first switch unit comprises a p-type transistor, and the second switch unit comprises an n-type transistor;
• or the first switch unit comprises an n-type transistor, and the second switch unit comprises a p-type transistor;
• and wherein the first control signal line also serves as the second control signal line;
• and
• removing a second noise signal from a first touch signal of a target touch sensing electrode based on the first noise signal.

A touch display apparatus, comprising:

• a touch display module, wherein the touch display module comprises a touch display panel, an acquisition processing module, a crack detection module and a switch selection circuit;
• wherein the touch display panel comprises a touch function layer and a target conductive layer that are spaced apart from each other along a thickness direction of the touch display panel, wherein a plurality of touch sensing electrodes and a plurality of first touch signal lines are arranged in the touch function layer, a conductive portion is arranged in the target conductive layer, and at least one of the plurality of touch sensing electrodes is coupled to the conductive portion;
• wherein the touch display panel comprises a detection signal line, and the detection signal line is electrically connected to the crack detection module, wherein the detection signal line comprises a first wire section, a second wire section and a third wire section;
• and
• wherein the acquisition processing module is electrically connected to the detection signal line, and electrically connected to each of the plurality of touch sensing electrodes through a respective one of the plurality of first touch signal lines, and the acquisition processing module is configured to acquire first touch signals of the plurality of touch sensing electrodes and a first noise signal transmitted by the detection signal line, and remove a second noise signal from a first touch signal of a target touch sensing electrode based on the first noise signal;
• wherein the first wire section is electrically connected to the second wire section or the third wire section through the switch selection circuit, the second wire section is electrically connected to the acquisition processing module, and the third wire section is electrically connected to a crack detection signal pin of the crack detection module;
• the switch selection circuit is configured to selectively connect the first wire section to the second wire section or is configured to selectively connect the first wire section to the third wire section;
• and the first wire section is coupled to the conductive portion;
• wherein the switch selection circuit comprises:
• a first switch unit and a second switch unit;
• wherein a control terminal of the first switch unit is electrically connected to a first control signal line, a first terminal of the first switch unit is electrically connected to the first wire section, a second terminal of the first switch unit is electrically connected to the second wire section, and the first switch unit is configured to be turned on or off under control of the first control signal line;
• wherein a control terminal of the second switch unit is electrically connected to a second control signal line, a first terminal of the second switch unit is electrically connected to the first wire section, a second terminal of the second switch unit is electrically connected to the third wire section, and the second switch unit is configured to be turned on or off under control of the second control signal line;
• and
• wherein
• the first switch unit comprises a p-type transistor, and the second switch unit comprises an n-type transistor;
• or
• the first switch unit comprises an n-type transistor, and the second switch unit comprises a p-type transistor;
• and
• wherein the first control signal line also serves as the second control signal line.