An OLED display panel and a preparation method therefor are provided. The OLED display panel includes a substrate, an anode layer, an electron transport layer, and a cathode layer, wherein the anode layer includes an anode and an auxiliary electrode disposed in a same layer, and the auxiliary electrode is disposed in an overlapping area. The auxiliary electrode is provided with a groove, an opening of the groove is disposed toward the cathode layer, and the auxiliary electrode extends through the electron transport layer and is electrically connected with the cathode layer.

An organic electronic device includes an anthracene-based compound represented by formula (I)

##STR00001## wherein Q is selected from groups represented by formula (A-1) and formula (A-2):

##STR00002## X is O or S; each of R.sub.1, R.sub.2, and R.sub.3 is independently selected from H, -D, a C.sub.1-C.sub.6 alkyl group, a phenyl group, a biphenyl group, a phenyl group substituted by a C.sub.1-C.sub.6 alkyl group, and a biphenyl group substituted by a C.sub.1-C.sub.6 alkyl group; each of L.sub.1 and L.sub.2 is independently selected from a single bond, a phenyl group, a biphenyl group, a phenyl group substituted by a C.sub.1-C.sub.6 alkyl group, and a biphenyl group substituted by a C.sub.1-C.sub.6 alkyl group; and * indicates a binding site.