Pixel structure, mask plate and display device

Abstract

The invention provides a pixel structure, a mask plate and a display device. The pixel structure comprises a plurality of pixel big groups which are arranged in an array mode, wherein each pixel big group comprises a first pixel small group and a second pixel small group which are adjacently arranged and mutually staggered, the first pixel small group and the second pixel small group respectivelycomprise three sub-pixel groups with different colors, the three sub-pixel groups with different colors are different in arrangement sequence in the first pixel small group and the second pixel smallgroup, each sub-pixel group comprises at least two sub-pixels with the same color, and the at least two sub-pixels with the same color can share one evaporation opening, so that the sub-pixel groups with the same color are ensured to be regularly arranged in a staggered manner, thereby enhancing the strength of the mask plate, being conducive to manufacturing small-size sub-pixels, and improving the PPI (Pixel Per Inch) of the display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel structure, a mask plate and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display technology has the characteristics of self-illumination, because of its large viewing angle of the display screen and the advantages of saving power, it has been widely used in mobile phones, digital cameras, DVD players, personal In products such as digital assistants (PDAs), notebook computers, car stereos, and televisions. [0003] At present, the pixel structure of a typical OLED display panel is arranged in a side-by-side way. In this side-by-side way, there are red, green, There are three blue (R, G, B) sub-pixels, each sub-pixel is rectangular, and each has an independent organic light-emitting device. Specifically, such as Figure 1A As shown, each pixel unit Pixel includes R (red) sub-pixels 101, G (green) sub-pi...

AI Technical Summary

Problems solved by technology

FMM is generally limited by the minimum opening, and the sub-pixels of different colors in the evaporation process are limited by the opening pitch. The fabrication of OLED pixel structures will inevitably be limited by the FMM opening and the precision of the evaporation process. Figure 1A As shown in the pixel structure, when the pixel density is higher than 300 PPI (Pixel Per Inch, pixel density), the current FMM process is very difficult to implement, and cannot meet the high PPI development requirements of OLED display devices.

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