An oled display panel

Abstract

The embodiment of the present invention discloses an OLED display panel, comprising: a cathode and an anode arranged oppositely, and a microcavity located between the anode and the cathode; the microcavity at least includes: a light emitting layer located between the cathode and the anode, and the light emitting layer includes : red light-emitting structure, green light-emitting structure and blue light-emitting structure; the electron injection layer between the light-emitting layer and the cathode; the hole injection layer between the light-emitting layer and the anode; wherein, the first microcavity corresponding to the red light-emitting structure The optical length range of the green light-emitting structure is 517.9nm-563.7nm, including the endpoint value; the value range of the optical length of the second microcavity corresponding to the green light-emitting structure is 417.3nm-438.3nm, including the endpoint value; the third microcavity corresponding to the blue light-emitting structure The optical length of the microcavity ranges from 342.5 nm to 355.9 nm inclusive. The OLED display panel can improve the color shift phenomenon of the OLED display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display panel. Background technique [0002] Because OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display panels have the advantages of self-illumination, rich colors, wide viewing angle, light weight and thin thickness, etc., OLED display panels have been widely used in mobile phones, digital cameras, notebook computers and TV and other display devices. [0003] The existing OLED display panel includes an array substrate, the array substrate includes a glass substrate, a pixel array arranged on the glass substrate, the pixel array includes a plurality of pixels and a driving unit, and each pixel includes three colors of red, green and blue The sub-pixel microcavity, the driving unit is used to transmit the driving current to each sub-pixel microcavity, so as to drive the sub-pixel microcavity to emit light. Wherein, the materials of the light-emit...

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Problems solved by technology

[0004] In the prior art, the length of the microcavity of each sub-pixel is usually set by adjusting the white chromaticity at a viewing angle of zero degree. However, due to the different curves of brightness attenuation of different colors of light with viewing angles, the existing OLED display panel is viewed at a large viewing angle. There is a serious color cast phenomenon

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