Array substrate and driving method thereof, display panel and display device

An array substrate, comprising a plurality of areas, wherein each area at least includes a first subpixel and a second subpixel, and each subpixel includes a corresponding display unit;

• the first subpixel includes a photosensitive identification unit, the photosensitive identification unit is connected with a read signal line and is configured to acquire and store position information of a touch position and transmit the acquired position information to the read signal line;
• the second subpixel includes a capacitive detection unit, the capacitive detection unit is connected with the read signal line and is configured to acquire information of a touch object and transmit the acquired information of the touch object to the read signal line;
• the first subpixel further includes a first display unit which is connected with a first display scanning line, a first data line and a common voltage port, and the first display unit is configured to store a data signal inputted into the first data line under the control of the first display scanning line and the common voltage port;
• the second subpixel further includes a second display unit which is connected with a second display scanning line, a second data line and the common voltage port, and the second display unit is configured to store a data signal inputted into the second data line under the control of the second display scanning line and the common voltage port;
• the photosensitive identification unit is also connected with an identification scanning line and the common voltage port, and is configured to acquire and store the position information of the touch position under the control of the common voltage port and transmit the acquired position information to the read signal line under the control of the identification scanning line;
• the capacitive detection unit is also connected with a third display scanning line, a detection scanning line and the common voltage port, and is configured to reset under the control of the third display scanning line and the common voltage port, acquire the information of the touch object under the control of the detection scanning line, and transmit the acquired information of the touch object to the read signal line;
• the capacitive detection unit includes a fourth transistor, a fifth transistor, a sixth transistor, a third capacitor and a detection electrode;
• a gate electrode of the fourth transistor is connected with the third display scanning line;
• a first end of the fourth transistor is connected with the common voltage port;
• a second end of the fourth transistor is connected with a first end of the third capacitor;
• a gate electrode of the fifth transistor is connected with the first end of the third capacitor;
• a first end of the fifth transistor is connected with the common voltage port;
• a second end of the fifth transistor is connected with a first end of the sixth transistor;
• a gate electrode of the sixth transistor is connected with the detection scanning line, and a second end of the sixth transistor is connected with the read signal line;
• the detection electrode is connected with one end of the third capacitor;
• a second end of the third capacitor is connected with the third display scanning line;
• and
• the fifth transistor is an amplifier transistor.