OLED display panel and manufacturing method thereof

Abstract

The invention provides an OLED display panel and a manufacturing method thereof. According to the manufacturing method of the OLED display panel, an area, corresponding to a non-pixel region, of the surface of an inorganic matter layer in a thin-film encapsulation layer has diffuse reflection roughness by adopting a plasma bombardment treatment method, light emitted from an OLED light-emitting layer of each sub-pixel is subjected to diffuse reflection when entering the area, and the light is diffused and atomized everywhere, cannot be intensively reflected and / or refracted and cannot be emitted from adjacent sub-pixels. Therefore, the light emitted from each sub-pixel can be prevented from interfering with the adjacent sub-pixels, the color purity of each single sub-pixel is improved and the color-bias phenomenon of the OLED display panel is improved. According to the OLED display panel, the area, corresponding to the non-pixel region, of the surface of the inorganic matter layer in the thin-film encapsulation layer has the diffuse reflection roughness, so that the light emitted from each sub-pixel can be prevented from interfering with the adjacent sub-pixels, the color purity of each single sub-pixel is improved and the color-bias phenomenon of the OLED display panel is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display panel and a manufacturing method thereof. Background technique [0002] Organic Light Emitting Display (OLED) has self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide operating temperature range, and can realize flexible display and With many advantages such as large-area full-color display, it is recognized by the industry as a display device with the most potential for development. [0003] According to the driving method, OLED can be divided into two categories: passive matrix OLED (Passive Matrix OLED, PMOLED) and active matrix OLED (Active Matrix OLED, AMOLED), namely direct addressing and thin-film transistor (Thin-film transistor, TFT ) There are two types of matrix addressing. Among them, AMOLED has pixels arranged in an array, belongs to the active display t...

AI Technical Summary

Problems solved by technology

[0007] like figure 1 As shown, since the flexible OLED display panel is frequently in a bending state, it often occurs that after the light emitted from the OLED light-emitting layer 100 of a sub-pixel is reflected and / or refracted in the encapsulation layer 200, a part of the light is emitted from the adjacent The phenomenon of sub-pixel emission causes interference to the light output of adjacent sub-pixels, resulting in a decrease in the color purity of a single sub-pixel and a color shift problem in the entire flexible OLED display panel, which affects the display effect

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