Display panel, manufacturing method thereof, and display device

Abstract

The present application discloses a display panel, a manufacturing method thereof, and a display device. The display panel includes: a substrate; an array functional layer configured on the substrate; a pixel definition layer configured on the array functional layer, including forming A plurality of through holes arranged in an array in the pixel area, and in the non-pixel area, the surface of the pixel definition layer includes a plurality of grooves distributed on the entire surface; and the OLED device layer includes a common function layer, and the common function A layer is conformally formed on the pixel definition layer. By setting the groove, in the OLED device layer on the pixel definition layer, the conduction path of the common functional layer between adjacent pixels is extended, which is equivalent to increasing the resistance, so that the leakage current between adjacent pixels is reduced. Small, it can effectively prevent the phenomenon of "stealing pixels".

Description

technical field [0001] The present application relates to the field of display technology, in particular to a display panel, a manufacturing method thereof, and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display technology, because of its characteristics of self-illumination, wide viewing angle, high contrast, low power consumption, high response speed, and can be applied to flexible display, has become the most Sought after display type. [0003] With the gradual development and maturity of OLED technology, customers have higher and higher requirements for OLED display panels. For example, the brightness uniformity of low gray scale is required to reach more than 80%, and the chromaticity shift is within 4 JNCD (Just Noticeable Color Difference, The standard for measuring the color accuracy of the screen) is below), but because the display panel is in low grayscale between adjacent pixels, due to the la...

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Problems solved by technology

[0003] With the gradual development and maturity of OLED technology, customers have higher and higher requirements for OLED display panels. For example, the brightness uniformity of low gray scale is required to reach more than 80%, and the chromaticity shift is within 4 JNCD (Just Noticeable Color Difference, The standard for measuring the color accuracy of the screen), but due to the horizontal leakage current between adjacent pixels of the display panel at low grayscale, and between the common functional layers of the OLED device, resulting in a pixel that should not emit light Slight luminescence, resulting in color cast and uneven brightness at low gray levels

Another reason is that the OLED device is formed in the pixel hole formed by the pixel definition layer. When the light is emitted from the hole, it will be absorbed and refracted by the side wall and lost, resulting in a decrease in luminous efficiency. It is especially obvious in the gray scale. Since the driving current is small in the low gray scale, the luminous flux emitted by the OLED is small, and the amount of light absorbed by the side wall of each pixel hole is also different, so the loss is also different, resulting in the amount of light that finally reaches the human eye. There are also differences, which eventually lead to uneven brightness of the picture

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