An organic light emitting display panel and an organic light emitting display device

Abstract

The invention discloses an organic light-emitting display panel and an organic light-emitting display device. The organic light-emitting display panel includes a substrate; a plurality of pixel circuits and a plurality of organic light-emitting elements located on the substrate; each pixel circuit includes a driving transistor, and the driving transistor is an organic The light-emitting element provides driving current; the vertical projection of the bottom electrode of at least one organic light-emitting element on the substrate does not overlap with the vertical projection of the set grid potential structure in the corresponding pixel circuit on the substrate, and the set grid potential structure The potential of is equal to the potential on the gate of the corresponding driving transistor. Through the technical solution of the present invention, it is effectively avoided that the change of the gate potential of the driving transistor affects the potential of the lower electrode of the organic light-emitting element, affects the generation of carriers and the recombination of carriers in the light-emitting functional layer, and then affects the light emission of the organic light-emitting element Efficiency affects the lifespan of organic light-emitting display panels.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to an organic light emitting display panel and an organic light emitting display device. Background technique [0002] OLED, Organic Light-Emitting Diode (Organic Light-Emitting Diode), also known as organic electroluminescent device, OLED has gradually occupied a place in the small-size display field due to its advantages of thinness, bendability, high contrast, and wide color gamut. Its basic structure includes upper and lower electrodes corresponding to each pixel area and a light-emitting functional layer located between the upper and lower electrodes. When a voltage is applied to the upper electrode and the lower electrode, holes and electrons move to the light-emitting functional layer. The excitons in the light-emitting functional layer migrate from the excited state to the ground state to emit light. [0003] The organic light-emitting display pa...

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Problems solved by technology

[0003] The organic light-emitting display panel also includes a pixel circuit corresponding to each pixel area. The change of the gate potential of the driving transistor in the pixel circuit will affect the potential of the lower electrode of the organic light-emitting element, thereby affecting the luminous efficiency of the organic light-emitting element and affecting the organic light-emitting display. panel life

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