Transparent display apparatus

A transparent display apparatus, comprising:

• a first transparent substrate having a first display area and a first transparent area outside the first display area;
• a first light-emitting element, a second light-emitting element, and a third light-emitting element disposed at the first display area and respectively used for emitting a first color light, a second color light, and a third color light;
• and
• a first frequency band blocking filter disposed on a transmission path of the first color light, the second color light, and the third color light;
• wherein the first frequency band blocking filter has a first blocking band, a second blocking band, and a third blocking band respectively corresponding to the first color light, the second color light, and the third color light, and an FWHM of the first blocking band, an FWHM of the second blocking band, and an FWHM of the third blocking band fall within a range of 15 nm to 55 nm.