Diamine hole transport agent and organic electroluminescent device containing same
申请人:Nessdisplay Co., Ltd.
公开号:US06337404B1
公开(公告)日:2002-01-08
A novel diamine compound of formula (I) of the present invention having a high glass transition temperature is useful as an improved hole transport agent, and an organic electroluminescent device containing the diamine compound of formula (I) has good thermal and mechanical stabilities, and prolonged lifetime.