US Patent Issued to Wuhan Tianma Micro-Electronics on Nov. 4 for "Heterocyclic compound containing heteroatom substituted fluorene and optoelectronic device" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,464,944, issued on Nov. 4, was assigned to Wuhan Tianma Micro-Electronics Co. Ltd. (Wuhan, China).

"Heterocyclic compound containing heteroatom substituted fluorene and optoelectronic device" was invented by Wei Gao (Shanghai), Wenpeng Dai (Shanghai), Lei Zhang (Shanghai), You Gao (Shanghai) and Lu Zhai (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heterocyclic compound containing heteroatom substituted fluorene and an optoelectronic device are provided. The heterocyclic compound includes a structure in Formula I:where Y is selected from O or S; at least one of X1, X2, X3, X4, X5, X6, X7 and X8 is a N atom, and rest are CR2; L1, L2, and L3 a...