An organic light emitting display panel and device

Abstract

The embodiment of the present invention discloses an organic light-emitting display panel and a device. The organic light-emitting display panel includes: a first electrode, a hole injection layer, a light-emitting layer, and a second electrode stacked in sequence; wherein, the hole injection layer The materials include organic materials and conductive metal oxides, or the hole injection layer is composed of organic material film layers and conductive metal oxide film layers. In the embodiment of the present invention, the material of the hole injection layer includes an organic material and a conductive metal oxide, or the hole injection layer is composed of an organic material film layer and a conductive metal oxide film layer to solve the problem of the existing organic light-emitting display panel. The interface energy barrier between the hole injection layer and the anode is too high, and the performance of the organic light-emitting display panel is low, and the interface energy barrier between the hole injection layer and the anode of the organic light-emitting display panel is reduced, and the hole injection ability is improved. And the purpose of organic light emitting display panel performance.

Description

technical field [0001] Embodiments of the present invention relate to organic light emitting display technology, and in particular to an organic light emitting display panel and device. Background technique [0002] Organic light emitting display (Organic light emitting display), due to its technical advantages such as no need for backlight, high contrast, thin thickness, wide viewing angle, and fast response speed, has become one of the key directions for the development of the display industry. [0003] Existing organic light-emitting display panels include: a cathode, an electron transport layer, a light-emitting layer, a hole transport layer, an anode and a substrate. When working, a bias voltage is applied between the anode and the cathode of the organic light-emitting display panel, and the holes and electrons break through the interface energy barrier and migrate from the hole transport layer and the electron transport layer to the light-emitting layer respectively. O...

AI Technical Summary

Problems solved by technology

However, in current organic light-emitting display panels, because the interface energy barrier between the hole injection layer and the anode is too high, the hole injection ability is low, which will make the performance of the organic light-emitting display panel poor.

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