Pixel structure, mask and display device

Abstract

The present invention provides a pixel structure, a mask plate and a display device. The pixel structure includes a plurality of large groups of pixels arranged in an array, and each large group of pixels includes first pixel subgroups and The second pixel group, the first pixel group and the second pixel group respectively include three sub-pixel groups with different colors, and the three sub-pixel groups with different colors are in the first pixel group and the second pixel group The order of arrangement is not the same, each sub-pixel group contains at least two sub-pixels of the same color, and at least two sub-pixels of the same color can share one evaporation opening, thus ensuring that the sub-pixel groups of the same color are regularly interlaced arrangement, thereby increasing the strength of the mask plate, which is beneficial to manufacturing small-sized sub-pixels and improving the PPI 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 generally has a minimum opening limit, 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 300PPI (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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