Embodiments of the disclosed technical solution provides a shift register unit circuit which operates based on two clock signals and comprises input terminals, a pre-charging circuit, a first level pulling-down circuit, a second level pulling-down circuit and a scan signal output terminal. A contemplated compound has a structure that corresponds to Formula A, wherein G, W, Q, Z, D, E, F, K, Y, d, e, f, k, n, m, and circle B and all R groups are defined within. The recipient’s apparatus determines the output mode based on the detected operating state and the extended distribution information and outputs the distribution information in accordance with the determined output mode.