Organic light-emitting display panel, preparation method thereof, and organic light-emitting display device

Abstract

The invention provides an organic light-emitting display panel and a display device thereof, which relate to the field of display technology and are used for improving the large viewing angle deviation phenomenon of the organic light-emitting display panel. The organic light-emitting display panel includes a plurality of organic light-emitting devices formed on one side of the substrate, each organic light-emitting device includes a first electrode, a light-emitting layer, and a second electrode stacked along a first direction; the first direction is perpendicular to The direction of the base substrate; the first electrode includes a first edge electrode and a first intermediate electrode surrounded by the first edge electrode, and the vertical distance between the first edge electrode and the base substrate is smaller than the first intermediate electrode and the base substrate The vertical distance between; the second electrode includes the second edge electrode and the second intermediate electrode surrounded by the second edge electrode; the vertical distance between the second edge electrode and the base substrate is greater than the second intermediate electrode and the base substrate the vertical distance between them. The above organic light emitting display panel is used to realize picture display.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an organic light emitting display panel, a preparation method thereof, and an organic light emitting display device. Background technique [0002] Organic Light-Emitting Diode (hereinafter referred to as OLED) display panels are widely used in the field of display technology because of their many advantages such as active light emission, high contrast ratio, and no viewing angle limitation. In a traditional OLED display panel structure, in order to improve the luminous efficiency of the OLED device, a microcavity structure is usually used to enhance the luminescence of the OLED device. [0003] Since the microcavity can increase the emission rate at the resonant wavelength while suppressing the emission rate at the non-resonant wavelength, the microcavity structure can significantly narrow the emission spectrum, increase the peak value, and improve the brightness and lum...

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Problems solved by technology

[0004] However, while improving the luminous efficiency and brightness of the OLED device, the microcavity effect often causes the electroluminescent spectrum of the OLED display device to change with the change of the observation angle, resulting in color shift when the OLED display device is observed at a large viewing angle.

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