For example, as illustrated in FIG. 2B, the first conductive layer 171 extends to a side of the second dam glue 52 away from the first dam glue 51, the first sub-conductive layer 172A and the second sub-conductive layer 172B both extend to a region where the second dam glue 52 is arranged in the display substrate 10, and the third sub-conductive layer 172C extends to a side of the first dam glue 51 away from the second dam glue 52. In this case, for example, the lead line 70 (as illustrated in FIG. 1H) led out from the flexible circuit board 40 is in direct contact with the first conductive layer 171, so that the lead line 70 is electrically connected to the second electrode layer 122 of the light emitting element 12 through the electrode layer extending portion 17. In other embodiments, the lead line 70 may also directly contact the first sub-conductive layer 172A and/or the second sub-conductive layer 172B, so that the lead line 70 is electrically connected to the second electrode layer 122 of the light emitting element 12 through the electrode layer extending portion 17.
