Ink-jet printing system and method for panel processing

Abstract

The invention discloses an ink-jet printing system for panel processing. The ink-jet printing system comprises an ink-jet printing head, a detection module, a master control unit and a printing chamber. The ink-jet printing head and the detection module are both arranged in the printing chamber. The ink-jet printing head is used for jetting ink drops to a substrate placed in the printing chamber so as to form a film layer on the surface of the substrate. The detection module is used for acquiring thickness data of the surface of the film layer and feeding back the thickness data to the mastercontrol unit. The master control unit is used for analyzing the film thickness difference of the positions of the surface of the film layer according to the received thickness data of the surface of the film layer, and the number of in drops, jetted to the next substrate, of the ink-jet printing head is corrected according to the film thickness difference. According to the ink-jet printing system,a printing function component and a detection function component are formed in the same chamber, the film layer thickness can be detected and fed back during printing or after printing, the Mura detection efficiency can be improved, timely correction can be carried out when the film layer thickness is not uniform, and batched defective products are avoided.

Description

technical field [0001] The present invention relates to the technical field of panel manufacturing, and in particular, to an inkjet printing system and method for a panel manufacturing process. Background technique [0002] In the current field of lighting and display, due to the characteristics of organic electroluminescence (OLED), such as low start-up voltage, thinness, self-luminescence, etc., more and more are widely studied and used in the development of lighting products and the panel industry. In order to meet the requirements of low energy consumption, thin and light, and as a surface light source. [0003] At present, the development trend of OLED is toward the direction of inkjet printing. However, in the process of inkjet printing, there is the generation of Mura (shadow) due to uneven film thickness during printing, and the drop position of the organic light-emitting material is caused by errors. Changes such as droplet reduction in the pixel cannot be monitore...

AI Technical Summary

Problems solved by technology

[0003] At present, the development trend of OLED is towards the direction of manufacturing by inkjet printing, but in the process of inkjet printing, there are Mura (dark shadows) caused by uneven film thickness during printing, and there are errors in the drop position of organic light-emitting materials. Changes such as droplet reduction in pixels cannot be monitored in time

If this kind of problem occurs in mass production, there will be problems with batch substrates that cannot be predicted and improved, resulting in a decrease in yield

The current effective method is to observe and inspect the substrate after the process is completed to see if there are any problems. However, during this inspection period, the printing process has already printed more panels under the same conditions, and if there is a problem with the current substrate, these of the same batch The panel is also unusable

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