A metal mask assembly, an OLED display panel and a display device

Abstract

The invention relates to the field of display technology, and discloses a metal mask assembly, an OLED display panel and a display device. The metal mask assembly includes a mask body, and the mask body includes a plurality of precision metal masks distributed in an array. The membrane plate, the first transverse shielding plates located in the single evaporation area and arranged at intervals along the first direction, and the second transverse shielding plates located in the repeated evaporation area, each of the second transverse shielding plates includes two transverse shielding plates distributed along the first direction. A first sub-shielding plate, along the first direction, the size of the first sub-shielding plate is the same as that of the first transverse shielding plate. In the metal mask plate assembly, the width of the first sub-shield plate is the same as the width of the first lateral shield plate, so that the edge portion of the precision metal mask plate located between the first lateral shield plate and the first sub-shield plate is affected by The pressure is the same, so that the edge of the precision metal mask is evenly stressed, which can ensure that the precision metal mask and the glass substrate are well bonded and avoid poor evaporation.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a metal mask assembly, an OLED display panel and a display device. Background technique [0002] Due to the current glass backplane preparation equipment and process, in OLED production, a glass substrate is evaporated along the extension direction of one of its long sides. The same layer of film is completely evaporated. In order to ensure good evaporation in the evaporation area of ​​the glass substrate, the two adjacent evaporated films have an overlapping area. In the mask assembly, the area corresponding to the overlapping area The width of the shielding plate is different than that of the shielding plate in other shielding areas. In this way, the magnetic force received during the evaporation process is different from that of the shielding plates in other areas, so that the carding of each shielding plate is uneven, and the metal mask is not uniform. The pressure ...

AI Technical Summary

Problems solved by technology

[0002] Due to the current glass backplane preparation equipment and process, in OLED production, a glass substrate is evaporated along the extension direction of one of its long sides, and a glass substrate needs multiple evaporations to fully absorb the surface of the entire glass substrate. The same layer of film is evaporated completely. In order to ensure good evaporation of the evaporation area of ​​the glass substrate, the film layers of two adjacent evaporations have an overlapping area. Among them, in the mask plate assembly, the The width of the shielding plate is different from that of other shielding areas. In this way, during the evaporation process, the magnetic force received is different from that of the shielding plates in other areas, so that the combing of each shielding plate is not uniform, and the metal mask will be damaged. The uneven pressure of the plate (FMM) will easily lead to poor bonding between the metal mask plate and the glass substrate, and further problems such as poor evaporation

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