Provided is an organic light emitting display device. The organic light emitting display device includes a display area including a plurality of pixels and a non-display area enclosing the display area, the organic light emitting display device comprises an organic light emitting display panel including a plastic base member, a back plate which is disposed below the organic light emitting display panel and includes a polymer material, a support substrate which is disposed below the back plate and includes a hole formed so as to correspond to a part of the display area, and a microphone module below the support substrate. The microphone module includes a diaphragm which is disposed to overlap at least a part of the hole, a core which is disposed below the diaphragm and is formed of a magnet, and a coil which encloses around the core.