Mask plate net stretching control method and device and net stretching system

Abstract

The invention discloses a mask plate net stretching control method, a mask plate net stretching control device and a net stretching system, and relates to the display technology field. The mask platenet stretching control method, the mask plate net stretching control device and the net stretching system aim at controlling a mask plate net stretching process, thereby reducing occurrence possibility of missing and color mixing in each pixel area of a patterned substrate. The control method includes: obtaining actual measurement position information of a pixel opening area; obtaining actual measurement offset R in the pixel opening area according to the actual measurement position information of the pixel opening area and preset position information of the pixel areas; when the actual measurement offset R is not larger than theoretical offset R0 of the pixel opening area corresponding to non-color-mixing pixel, judging if an actual measurement geometric center of the pixel opening area is located on the exterior of an area surrounded by fitting patterns of the geometric center of the pixel opening area corresponding to the non-color-mixing pixel, if yes, generating a regulation command for starting the regulation process of net stretching parameters, and if not, generating a confirmation command for confirming the net stretching parameters. The mask plate net stretching control device is used for executing the above control method. The mask plate net stretching control method is used in evaporation plating.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method and device for controlling a mask plate stretching, and a stretching system. Background technique [0002] Organic light-emitting diode (Organic Light-Emitting Display, abbreviated as OLED) display device is a self-luminous low-energy flat-panel display device. The displayed picture has a wide viewing angle, high brightness, and excellent contrast. It has become a display technology. The mainstream development direction of the field. [0003] At present, in the process of preparing OLED display panels, it is necessary to use a patterned mask to form a desired pattern on the substrate to be evaporated by vacuum evaporation to obtain a patterned substrate. Generally speaking, the pixel position accuracy should be guaranteed to be within the pixel position accuracy threshold range, so that the measured geometric center of the pixel opening area of ​​the mask plate and the...

AI Technical Summary

Problems solved by technology

However, due to the differences in the geometric features of the edge of the pixel opening area of ​​the mask plate, not only the material evaporation accuracy of the preset light-emitting area of ​​the pixel is different in the edge area of ​​​​different geometric features, but also the color mixing distance is different.

When evaporating material on the substrate to be evaporated by scanning the existing evaporation source, each pixel of the patterned substrate is prone to missing and color mixing problems

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