Method, device, system for correcting offset of drop positions of ink droplets, computer device and computer readable storage medium

Abstract

The invention relates to a method, a device, a system for correcting offset of drop positions of ink droplets, a computer device and a computer readable storage medium. The method comprises the following steps that an ink jet print head is controlled to drop the ink droplets at set ideal position coordinates on a glass substrate; the actually-measured position coordinates of the dripping ink droplets on the glass substrate is detected; coordinate difference values between the measured position coordinates and the ideal position coordinates are obtained, and the offset of the drop positions ofthe ink droplets is obtained according to the coordinate difference values; and according to the offset, the drop positions of the ink droplets of the ink jet print head is compensated and corrected.According to the method, the offset of the drop positions of the ink droplets of the ink jet print head can be compensated and corrected, so that the situation that the offset of the drop positions ofthe ink droplets in the ink jet printing process causes the ink droplets fall outside pixel pits of the glass substrate is avoided, and the accuracy of the drop positions of the ink droplets of the ink jet print head is improved.

Description

technical field [0001] The invention relates to the technical field of inkjet printing, in particular to a method, device, system, computer equipment and storage medium for correcting ink drop drop position offset. Background technique [0002] Inkjet printing technology has been widely used in the device manufacturing process in addition to the printing of traditional paper text patterns. For example, some functional materials in the OLED device manufacturing process can use inkjet printing technology, such as the hole injection layer ( HIL), hole transport layer (HTL), light emitting layer material (EML), etc. Such as figure 1 As shown, that is, in the known pixel pits, the functional layer material ink is injected into the pixel pits by means of inkjet printing. According to the characteristics of the inkjet printing process, the uniformity of the film thickness of the ink material filled in the pixel pit is an important consideration point of the process, which require...

AI Technical Summary

Problems solved by technology

[0004] The current technical problem is that during the printing process, factors such as the movement of the inkjet print head, the movement of the glass substrate, and human operation errors are likely to cause offset errors in the drop position of ink droplets, and this offset error will lead to errors in the printing process. During inkjet printing, the drop position of the ink drop deviates from the ideal drop position, and even drops outside the pixel pit, resulting in uneven film thickness of the ink material in the pixel pit on the glass substrate in the inkjet printing process after decompression drying , which eventually leads to abnormal efficiency of OLED devices

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