Slot coating technology is the most important solution film forming technology for flat panel display

Online precision film formation technology mainly includes dry film formation and wet (solution) film formation.Among them, there are two kinds of Equipment, for wet (solution) film formation:IJ and slot coating, and slot coating is the key technology of wet (solution) film formation.

 

Large Area Precision Slot Coating Technology-From Flat Panel Display to Photovoltaic and IC Advanced Packaging

 

At present, in the large area size, only the slit coating has a wide control range of coating thickness and high consistency.Slot coating technology is the most important technology in flat panel display wet (solution) film forming technology.

 

In flexible OLED, slot coating technology can be applied in many aspects, such as cover plate (UTG/CPI/HC), touch (AgNW/CP), electrode (TCF/CPI), substrate (PI+TFT) ), PI film formation and photoresist coating in TFT substrates.

 

IC Board Level Packaging (FO-PLP) is one of the new developments in precision solution film formation technology.At present, many products have adopted this method.For example, Yi Siwei is packaged on 510mm*515mm, and Fozhixin is packaged on 600mm*600mm.Fan-out large board-level packaging (FO-PLP) has four advantages:superior performance, small physical size, low cost, and high adaptability.

 

One of the core Equipment, in the middle of board level packaging is slot coating Equipment,.The challenge of fan-out large board level packaging is that warpage will occur after a large number of chips are transferred to the glass substrate, but this problem can be solved.

 

At present, large-scale precision slit coating Equipment, relies heavily on imports.For example, in the OLED industry, TFT coating Machine,s, vapor deposition Machine,s, projection exposure Machine,s, etc.are basically controlled by South Korea and Japan.my country's coating Equipment, manufacturers are basically concentrated in Non-electronic grade applications.

 

China has formed an electronic-grade coating Equipment, company that can compete in the world.The benchmarking company is the world's top 5 Japanese and Korean slit coating Equipment, companies, focusing on the development of core coating Equipment, for mass production of perovskite.

 

Precision slit coating technology for flat panel display is mature

 

High-end precision solution film formation is widely used, in new energy (perovskite, OPV, hydrogen batteries, lithium batteries, etc.), it can be used in proton exchange membranes, lithium battery separators, HTL/ETL/perovskites, etc.;

 

In flat panel display (LCD, OLED, mLED, QLED, etc.), it can be applied to TFT and CF, PI substrate and UTG/CPI cover, photoelectric functional layer/electrode, flexible packaging (TFE), LCD alignment film.

 

In the fields of IC advanced packaging, electronic information, intelligence, etc., it can be applied to FO-WLP/FO-PLP, sensors, electrochromic and smart glass.

 

Based on the mature precision slit coating film formation technology, it has achieved very promising development in the field of pan-semiconductor, especially in the field of perovskite solar cells and advanced packaging of integrated circuit FO-PLP.