ORGANIC LIGHT EMITTING DISPLAY DEVICE AND LIGHTING APPARATUS FOR VEHICLES USING THE SAME

摘要

Discussed is an organic light emitting display device. The organic light emitting display device according to an embodiment includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. The first emission part includes a first hole transport layer, a first emission layer, and a first electron transport layer, and the second emission part includes a second hole transport layer, a second emission layer, and a second electron transport layer. The second emission layer includes at least two zones including a hole-type host and an electron-type host, and a zone among the at least two zones closer to the first electrode than the second electrode, a ratio of the electron-type host is higher than a ratio of the hole-type host in the zone.

主权项

1. An organic light emitting display device comprising:
a first emission part between a first electrode and a second electrode, the first emission part including a first hole transport layer, a first emission layer, and a first electron transport layer; and a second emission part on the first emission part, the second emission part including a second hole transport layer, a second emission layer, and a second electron transport layer, wherein: the second emission layer comprises at least two zones including a hole-type host and an electron-type host, and a zone among the at least two zones is closer to the first electrode than the second electrode, and a ratio of the electron-type host is higher than a ratio of the hole-type host in the zone.