An organic light emitting apparatus comprising: a diode substrate; an organic emission unit that is disposed on the diode substrate and comprises at least one organic light emitting diode comprising a pair of electrodes (231, 235) and an organic layer interposed between the electrodes; an encapsulation substrate disposed above the organic emission unit; a sealant with which the diode substrate is attached to the encapsulation substrate; a filling material interposed between the diode substrate and the encapsulation substrate; and an organic protection layer that is interposed between the organic emission unit and the filling material and comprises at least one thermally depositable organic material comprising one material selected from a plurality of materials comprised in the organic layer of the organic light emitting diode; characterized in that the at least one thermally depositable organic material is not a metal complex-type material, wherein, i) the organic layer of the organic light emitting diode comprises a hole injection layer, and the organic protection layer comprises the same material as the hole injection layer, and/or ii) the organic layer of the organic light emitting diode comprises a hole transport layer, and the organic protection layer comprises the same material as the hole transport layer, and/or iii) the organic layer of the organic light emitting diode comprises an emission layer, and the organic protection layer comprises the same material as the emission layer, and/or iv) the organic layer of the organic light emitting diode comprises a hole blocking layer, and the organic protection layer comprises the same material as the hole blocking layer, and/or v) the organic layer of the organic light emitting diode comprises an electron transport layer, and the organic protection layer comprises the same material as the electron transport layer, and/or vi) the organic layer of the organic light emitting diode comprises an electron injection layer, and the organic protection layer comprises the same material as the electron injection layer. a diode substrate; an organic emission unit that is disposed on the diode substrate and comprises at least one organic light emitting diode comprising a pair of electrodes (231, 235) and an organic layer interposed between the electrodes; an encapsulation substrate disposed above the organic emission unit; a sealant with which the diode substrate is attached to the encapsulation substrate; a filling material interposed between the diode substrate and the encapsulation substrate; and an organic protection layer that is interposed between the organic emission unit and the filling material and comprises at least one thermally depositable organic material comprising one material selected from a plurality of materials comprised in the organic layer of the organic light emitting diode; characterized in that the at least one thermally depositable organic material is not a metal complex-type material, wherein, i) the organic layer of the organic light emitting diode comprises a hole injection layer, and the organic protection layer comprises the same material as the hole injection layer, and/or ii) the organic layer of the organic light emitting diode comprises a hole transport layer, and the organic protection layer comprises the same material as the hole transport layer, and/or iii) the organic layer of the organic light emitting diode comprises an emission layer, and the organic protection layer comprises the same material as the emission layer, and/or iv) the organic layer of the organic light emitting diode comprises a hole blocking layer, and the organic protection layer comprises the same material as the hole blocking layer, and/or v) the organic layer of the organic light emitting diode comprises an electron transport layer, and the organic protection layer comprises the same material as the electron transport layer, and/or vi) the organic layer of the organic light emitting diode comprises an electron injection layer, and the organic protection layer comprises the same material as the electron injection layer. i) the organic layer of the organic light emitting diode comprises a hole injection layer, and the organic protection layer comprises the same material as the hole injection layer, and/or ii) the organic layer of the organic light emitting diode comprises a hole transport layer, and the organic protection layer comprises the same material as the hole transport layer, and/or iii) the organic layer of the organic light emitting diode comprises an emission layer, and the organic protection layer comprises the same material as the emission layer, and/or iv) the organic layer of the organic light emitting diode comprises a hole blocking layer, and the organic protection layer comprises the same material as the hole blocking layer, and/or v) the organic layer of the organic light emitting diode comprises an electron transport layer, and the organic protection layer comprises the same material as the electron transport layer, and/or vi) the organic layer of the organic light emitting diode comprises an electron injection layer, and the organic protection layer comprises the same material as the electron injection layer.