A piezoelectric control system and method for printing and preparing high-uniform device film layers

A technology for controlling the system and film layer, applied in the direction of the spray device, etc., can solve the problems of uneven film formation, uneven film layer, insufficient spray volume, etc., to improve the film formation uniformity, improve the detection efficiency, and improve the film quality. optimized effect

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the preparation process, there is a problem that is easily overlooked and has not been solved: the solvent volatilization of the ink droplets printed first is greater than that of the ink droplets sprayed after being exposed for a long time, so the volatilization rate of each ink drop cannot be guaranteed to be the same. After the substrate is on the substrate, the volatilization of the solvent at the initial printing end is greater than that at the rear printing end, so that the solvent at the rear printing end replenishes the initial printing end. Inhomogeneous; at the same time, due to the instability of the nozzle in the rapid inkjet, the amount of liquid spray may be insufficient in a certain period of time, resulting in uneven film layers and small dark areas (under light source irradiation) The area where the film layer appears below is thinner), which greatly affects the film quality of the device film layer

Method used

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  • A piezoelectric control system and method for printing and preparing high-uniform device film layers
  • A piezoelectric control system and method for printing and preparing high-uniform device film layers
  • A piezoelectric control system and method for printing and preparing high-uniform device film layers

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Embodiment 1

[0055] Such as figure 1 with figure 2 As shown, this embodiment provides a piezoelectric control system for printing and preparing high-uniform device film layers. The system includes: a central control device, a main piezoelectric injection device, an ink adjustment device, a film layer detection device, and a film layer optimization The device and the upper computer detection and processing device, the main piezoelectric injection device, the ink adjustment device, the film layer detection device, the film layer optimization device and the upper computer detection and processing device are respectively connected with the central control device, and the upper computer detection and processing device is connected with the film layer detection device. device connection.

[0056] combine figure 1 with figure 2 As shown, the central control device is equipped with a main controller and a piezoelectric drive device, and the main controller is connected with the piezoelectric ...

Embodiment 2

[0067] Such as Figure 4As shown, this embodiment provides a piezoelectric control method for printing and preparing a highly uniform device film layer, the method includes the following steps:

[0068] Installation steps: Connect the main piezoelectric injection device, ink adjustment device, film layer detection device, film layer optimization device, and host computer detection and processing device with the central control device, and set the film layer detection device in the host computer detection and processing device. Connected image acquisition module, the image acquisition module is used to obtain the original image of film formation detection;

[0069] Ink pretreatment step: deliver the raw liquid, the first solvent, and the second solvent to the main piezoelectric nozzle. In actual application, the main piezoelectric spraying device, the first liquid dispensing device, and the second liquid dispensing device respectively deliver the stock solution, the first solv...

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Abstract

The invention discloses a piezoelectric control system and method for printing and preparing a high-uniform device film layer. The system includes: a central control device, a main piezoelectric injection device and an ink adjustment device, a main piezoelectric injection device, and an ink adjustment device They are respectively connected to the central control device; the central control device is equipped with a main controller and a piezoelectric drive device, the main controller is used to generate and transmit printing instructions to control the printing process of ink and electric nozzles, and the piezoelectric drive device is used to drive the main pressure The electrospray device; the ink adjustment device is provided with a first liquid dispensing device and a second liquid dispensing device, and the first liquid dispensing device and the second liquid dispensing device adjust the delivery rate of the solvent and set the total flow to maintain a constant value. The present invention controls the solvent volatilization of ink droplets sprayed in different time periods by changing the delivery volume of the first solvent and the second solvent respectively through the first liquid distributing device and the second liquid dispensing device, so that the ink droplets sprayed before and after show a difference in boiling point gradient, The technical effect of further improving the uniformity of film formation.

Description

technical field [0001] The invention relates to the technical field of printed electronics, in particular to a piezoelectric control system and method for printing and preparing high-uniform device film layers. Background technique [0002] With the rapid development of inkjet printing technology, people began to try to print the film layer of high-performance electronic devices by means of inkjet printing. As a non-contact, pressure-free, and maskless printing technology, inkjet printing technology can accurately spray small droplets (picoliters or femtoliters) on the desired position, and form a thin film after the solvent evaporates, dries and solidifies. . The inkjet printing process has the advantages of low cost, large area, and environmental protection, making this technology gradually become a wet method for preparing microelectronic devices, such as organic electroluminescent OLED devices (especially organic full-color display screens), color filters in LCDs, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B12/08
CPCB05B12/084
Inventor 宁洪龙赵杰姚日晖彭俊彪周尚雄刘泰江杨跃鑫叶倩楠曾璇梁宏富
Owner SOUTH CHINA UNIV OF TECH
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