Organic light emitting element, display panel and display device

A display panel, comprising an organic light emitting element;

• wherein the organic light emitting element comprises:
• a first electrode;
• a hole layer disposed on the first electrode;
• a light emitting layer disposed on the hole layer and comprising a first light emitting portion, a second light emitting portion and a third light emitting portion;
• an electron layer disposed on the light emitting layer;
• and
• a second electrode disposed on the electron layer;
• wherein a difference of an energy level between that of the hole layer and the first light emitting portion and/or a difference of an energy level between that of the first light emitting portion and the electron layer is greater than or equal to a first threshold, so that a difference of a turn-on voltage between that of the first light emitting portion and the second light emitting portion is smaller than a second threshold.

A display device, comprising a display panel comprising an organic light emitting element;

• wherein the organic light emitting element comprises:
• a first electrode;
• a hole layer disposed on the first electrode;
• a light emitting layer disposed on the hole layer and comprising a first light emitting portion, a second light emitting portion and a third light emitting portion;
• an electron layer disposed on the light emitting layer;
• and
• a second electrode disposed on the electron layer;
• wherein a difference of an energy level between that of the hole layer and the first light emitting portion and/or a difference of an energy level between that of the first light emitting portion and the electron layer is greater than or equal to a first threshold, so that a difference of a turn-on voltage between that of the first light emitting portion and the second light emitting portion is smaller than a second threshold.