Patterning planning method, printing method and system for printing display

Abstract

The invention discloses a patterning planning method, a printing method and a printing system for printing display, and belongs to the technical field of printing display. The planning method comprises the steps that according to spray heads and spray hole arrangement parameters, all spray holes are projected in the printing direction, so that spray hole array coordinates and all gray scale volume values of all the spray holes are obtained; pixel pit array coordinates on the substrate and the printing volume value needed by each pixel pit are obtained; for each pixel pit, coordinate position matching is carried out on the pixel pit and the spraying holes, and the multiple spraying holes which are successfully matched serve as a candidate printing spraying hole set of the pixel pit; obtaining a plurality of to-be-selected printing modes of each pixel pit under the condition of meeting the printing volume value required by the pixel pit; and determining an optimal printing mode of each pixel pit to form an optimal planning scheme by taking the minimum sum of the printing times required for completing the jet printing of the substrate as a target. Therefore, on the premise that the printing precision is guaranteed, the printing planning efficiency of the large-area high-precision jet printing display production line is effectively improved, and efficient production and manufacturing are achieved.

Description

technical field [0001] The invention belongs to the technical field of printing and display, and specifically discloses a pattern planning method, printing method and system for printing and display. Background technique [0002] Printed display technology is to use inkjet printing to accurately print ink containing luminescent materials or reflective materials onto flexible substrates, and finally form a film to encapsulate a flexible OLED display technology, which is one of the application directions of printed electronics. Compared with the current evaporation technology for manufacturing flexible OLED displays, when producing large-area display devices, printing display technology solves the difficulty in manufacturing large-size fine metal masks and the requirements for a vacuum environment, which is transformed into a printing nozzle module. Precise control of the problem. At the same time, inkjet printing technology saves nearly 90% of raw materials, greatly improves...

AI Technical Summary

Problems solved by technology

The precise matching between the nozzle and the pixel pits on the substrate, and the uniformity of film thickness of the ink droplets deposited in the pixel pits have become the primary problems for technological advancement, which directly affects the quality of the display device. The nozzles are not aligned with the pixel pits during printing. Or improper control of the droplet volume will lead to defects such as scattered spots and mura, resulting in a decrease in the quality of the display

[0004]At present, there is a lack of a complete solution for high-resolution patterning planning, and only low-resolution patterning planning methods, but most of them are limited to single-structure nozzles. Moreover, the resolution of the nozzle is low, which cannot meet the printing of high-resolution substrates. When the resolution of the pixel substrate is high, the shape, size, and arrangement of the pixel substrate will also change, and adaptation planning cannot be carried out.

In order to adapt to the patterned printing of various substrate styles, it is necessary to carry out abstract modeling of the substrate pixels to extend the scope of application of the planning system; at the same time, due to the improvement of the resolution of the substrate, the resolution and number of nozzles required also need to increase. Some technologies lack the generalization of the abstract model of the nozzle, and cannot be limited to only one nozzle structure and layout; the most important point is that it is limited by the printing of large-area substrates. When the printing area of ​​the substrate begins to increase, the scale of patterning planning Increase, the number of pixels and the number of nozzle holes increase at the same time, resulting in a sharp increase in the scale of calculation planning, which greatly reduces production efficiency in terms of time

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