Array substrate and detection method therefor, and tiled display panel

An array substrate, comprising:

• a display region, provided with a plurality of scanning lines, a plurality of data signal lines, a plurality of positive signal lines and a plurality of reference signal lines, and a plurality of pixels arranged in an array mode;
• and
• a bezel region;
• wherein
• at least one of the plurality of pixels comprises:
• sub-pixels of at least three colors and a pixel driving chip driving each of the sub-pixels to emit light;
• each of the sub-pixels comprises at least one inorganic light-emitting diode;
• the pixel driving chip is connected with a positive electrode of the inorganic light-emitting diode in each of the sub-pixels it drives, at least one of the plurality of data signal lines, at least one of the plurality of scanning lines and at least one of the plurality of reference signal lines;
• and
• the pixel driving chip is configured to write a signal of the data signal line into the sub-pixels of different colors under control of the scanning line, corresponding to the pixel driving chip, in a time division, wherein the reference signal line is configured to provide a negative signal for the pixel driving chip so as to form a current path between the inorganic light-emitting diode and the pixel driving chip;
• wherein the plurality of pixels comprise N pixel rows arranged in a first direction and M pixel columns arranged in a second direction, wherein N and M are both integers larger than 1;
• the plurality of scanning lines extend in the first direction and are arranged in the second direction, the plurality of data signal lines extend in the second direction and are arranged in the first direction, the plurality of positive signal lines extend in the second direction and are arranged in the first direction, and the plurality of reference signal lines extend in the second direction and are arranged in the first direction;
• and
• the first direction is different from the second direction;
• wherein each of the pixels comprises:
• a first color sub-pixel, a second color sub-pixel and a third color sub-pixel;
• each of the pixel rows corresponds to one of the plurality of scanning lines, and each of the pixel columns corresponds to one of the plurality of data signal lines, one of the plurality of reference signal lines and two of the plurality of positive signal lines;
• and
• one of the two positive signal lines is connected with a positive electrode of an inorganic light-emitting diode in the first color sub-pixel, and the other of the two positive signal lines is connected with positive electrodes of inorganic light-emitting diodes in the third color sub-pixel and the second color sub-pixel;
• wherein the display region further comprises scanning signal routing wires connected with the plurality of scanning lines in a one-to-one correspondence, and the scanning signal routing wires extend in the second direction;
• wherein the scanning lines are in a first metal layer, and the scanning signal routing wires, the data signal lines, the reference signal lines and the positive signal lines are in a second metal layer;
• wherein the bezel region at one end of the data signal lines comprises a bent region, a wiring region and a bonding region sequentially far away from the display region;
• at least one first chip and at least one second chip are arranged in the bonding region;
• the scanning signal routing wires and the data signal lines are sequentially connected with the first chip in a bonding mode through routing wires in the bent region and the wiring region;
• and
• the reference signal lines and the positive signal lines are sequentially connected with the second chip in a bonding mode through routing wires in the bent region and the wiring region.