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Ink-jet printing device

An inkjet printing device and inkjet technology, applied in the field of panel manufacturing, can solve problems such as ink leakage, draining, and increased costs

Active Publication Date: 2021-07-09
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the negative pressure on the printing ink is too high, the printing ink will be drained, which will increase the viscosity of the printing ink, which will cause the nozzle to be blocked in subsequent printing.
If the negative pressure on the printing ink is too low or there is no negative pressure, the printing ink may leak from the nozzle due to the weight, and ink leakage will occur, which will cause the loss of printing ink and increase the cost
[0004] Now it is necessary to provide a new inkjet printing device to solve the problem of ink leakage or clogging of nozzles

Method used

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  • Ink-jet printing device

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application. In addition, it should be understood that the specific implementations described here are only used to illustrate and explain the present application, and are not intended to limit the present application. In this application, unless stated to the contrary, the used orientation words such as "up" and "down" usually refer to up and down in the actual use or working state of the device, specifically the direction of the drawing in the drawings ; while "inside" and "outside" refer to the outline of ...

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PUM

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Abstract

The invention discloses an ink-jet printing device which is used for printing an organic light-emitting device. The ink-jet printing device comprises an ink jet unit, an ink supply unit, a liquid supply unit, a negative pressure unit and a control unit. The ink supply unit is in fluid connection with the ink jet unit and is used for providing stored ink for the ink jet unit; the liquid supply unit is in fluid connection with the ink jet unit and is used for providing a solvent for the ink jet unit; the negative pressure unit is in fluid connection with the ink jet unit and is used for providing negative pressure for the ink jet unit; the ink jet unit is used for accommodating ink formed by mixing the stored ink and the solvent and is used for controlling the printing ink to conduct printing; and the control unit is used for controlling the supply of the stored ink and the solvent according to a detection value of the ink jet unit.

Description

technical field [0001] The present application relates to the technical field of panel manufacturing, in particular to an inkjet printing device. Background technique [0002] At present, the development trend of organic light-emitting diode (Organic Light-Emitting Diode, OLED) manufacturing is towards the direction of inkjet printing, but in inkjet printing, it is necessary to add material to the printing ink cartridge and add ink as new printing ink. [0003] During the printing process of the inkjet printing device, or during the standby process of the inkjet printing device, it is necessary to have a negative pressure process on the printing ink, so as to prevent the printing ink from dripping from the nozzle and causing liquid leakage. If the negative pressure on the printing ink is too high, the printing ink will be drained, which will increase the viscosity of the printing ink, which will cause the nozzle to be blocked in the subsequent printing. If the negative pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J3/407B41J2/175B41J2/165
CPCB41J3/407B41J2/165B41J2/17566B41J2/16579
Inventor 黄辉
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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