Optical film, polarizing plate, and organic electroluminescent display device

The present invention addresses the problem of providing: an optical film which, when used in a display device, in particular, an organic electroluminescent display device, can protect a display element from external light, does not cause light emission loss in the display element, and has excellent light emission resistance; the optical film contains a resin and a dye compound, and has excellent light resistance and adhesiveness with an adjacent layer, without bleeding out. This optical film contains a resin and a dye compound, the resin being a cyclic olefin resin, and the dye compound having a structure represented by general formula (1) or general formula (2). [Chemical Formula 1] 本发明的技术问题在于提供一种光学膜、具备该光学膜的偏振片及有机电致发光显示装置，该光学膜在用于显示装置、特别是有机电致发光显示装置时，能够保护显示元件免受外部光的影响，并且对显示元件的发光不产生发光损失，并且没有渗出，耐光性、与邻接层的粘接性优异，所述光学膜包含树脂和色素化合物。本发明的光学膜是包含树脂和色素化合物的光学膜，其中，所述树脂为环状烯烃类树脂，所述色素化合物具有下述通式(1)或通式(2)所示的结构。[化学式1]