Abstract: An organic electroluminescent display device includes a first substrate including a display region including a plurality of pixel regions; a first electrode in each pixel region; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer and in the display region, wherein the second electrode includes a first metal material having a first wt %, a first work function, and a first sheet resistance, and a second metal material having a second wt % less than the first wt %, a second work function less than the first work function, and a second sheet resistance greater than the first sheet resistance.

Abstract: A novel arylpiperazine-containing purine derivatives and a pharmaceutical composition comprising the same as an active ingredient, which are useful for preventing or treating depressive disorders, are provided.

Abstract: A novel arylpiperazine-containing imidazole 4-carboxamide derivative or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition comprising the same as an active ingredient for preventing or treating a depressive disorder are provided.

Abstract: The present invention relates to novel arylpiperazine-containing pyrrole 3-carboxamide derivatives of formula (I) or a pharmaceutically acceptable salt thereof which is useful for preventing or treating depressive disorders. The present invention also provides a method for preparing the arylpiperazine-containing pyrrole 3-carboxamide derivatives or the pharmaceutically acceptable salt thereof, a pharmaceutical composition containing same, and a method for preventing or treating depressive disorders.