Anti-corrosion ink box, ink-jet printing device and preparation method of QLED light-emitting device

Abstract

The invention relates to an anti-corrosion ink box, an ink-jet printing device and a preparation method of a QLED light-emitting device. The anti-corrosion ink box comprises an outer hard protective layer and an inner plastic ink storage layer, a mixed film layer is arranged on the inner surface of the inner plastic ink storage layer, and the mixed film layer is made of a mixture of Na2SiO3, CaSiO3 and SiO2. The inner surface of the inner plastic ink storage layer is subjected to anti-corrosion treatment, and a mixed film layer of sodium silicate (Na2SiO3), calcium silicate (CaSiO3) and silicon dioxide (SiO2) is evaporated on the inner surface of the inner plastic ink storage layer, so that the corrosion resistance of the inner surface of the inner plastic ink storage layer can be improved; when the ink needs to be replaced, a lot of previous ink cannot be left in the inner plastic ink storage layer. The stability and other performances of the QLED luminescent device prepared by using the ink-jet printing device are greatly improved.

Description

technical field [0001] The invention relates to an anti-corrosion ink cartridge, an ink jet printing device and a preparation method of a QLED light-emitting device. Background technique [0002] Display technology from the early cathode ray tube (CRT), to the liquid crystal display (LCD), plasma flat panel display (PDP) in the mid-1980s, and then to the current mainstream OLED / QLED display, has completed the quality of the display again and again. leap. [0003] Organic electroluminescent diodes (OLEDs) have become the mainstream technology in the field of display technology due to their excellent display performance, such as self-luminescence, simple structure, ultra-thin, fast response speed, wide viewing angle, low power consumption, and flexible display. Quantum dot light-emitting diodes (QLEDs) have the advantages of saturated light color, adjustable wavelength, and high photoluminescence and electroluminescence quantum yields. In recent years, they have become a stro...

AI Technical Summary

Problems solved by technology

In the existing OLED / QLED devices, some of the functional layer materials are organic polymers, some are inorganic nanoparticles, etc., and the solvents used to dissolve or disperse them cover a wide range. The printing ink cartridges that are often used in this field to store ink are easily damaged. A certain solvent or mixed solvent dissolves to corrode and pollute the ink

In the process of device preparation, it is often found that when the ink is stored in the ink cartridge for more than 1 week, the performance of the prepared QLED light-emitting device is much lower than when the ink is just added to the ink cartridge

When the ink is added to the ink cartridge for more than a week, the performance of the QLED light-emitting device produced by the corrosion of the ink cartridge will decline, and there will be residual problems if the ink is not cleaned cleanly when changing the ink, and changing the ink every other week will cause waste of ink

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