Production method of free nanometer columnar array for improving luminescence of OLED device

Abstract

The invention discloses a production method of a free nanometer columnar array for improving luminescence of an OLED device. The method comprises the steps that firstly, an ITO substrate is cleaned byusing a laboratory ITO conductive glass cleaning agent with a certain concentration and an ultraviolet light cleaning machine in sequence; then even PMMA / PS thin film is prepared by using a common technology, the ITO substrate with the PMMA / PS thin film is annealed, and a free nanometer columnar array is obtained; finally, an organic layer and an electrode layer of the OLED device are subjected to vapor deposition in sequence, and the OLED device is obtained after being packaged. According to the production method, the phase separation process of the PMMA / PS thin film is regulated and controlled, and a free nanometer columnar array structure is prepared and obtained on the ITO substrate and is applied to the OLED device; the manufacturing technology is simple, the cost is low, meanwhile,the surface area of the thin film is effectively improved, and the effective luminescence area of the device is increased; meanwhile, the light emergence angle is changed, the total reflection loss isreduced, the light emergence rate is improved, and luminescence of the OLED device is improved.

Description

technical field [0001] The invention mainly relates to the fields of OLED device luminescence and micro-nano structure fabrication, in particular to a method for fabricating a free nano-column array for enhancing OLED device luminescence. Background technique [0002] At present, the light extraction rate of OLED devices is only about 30%, and people usually use micro-nano structures to improve their light extraction efficiency. But now other types of micro-nano structures, such as micro-lenses, have complex manufacturing processes, require strict alignment and etching processes, have high requirements on equipment conditions and manufacturing processes, and are expensive. Therefore, it is necessary to develop a simple, fast and low-cost micro-nano structure preparation process to improve the light extraction rate and effective light-emitting area of ​​OLED devices, thereby enhancing its luminescence. Contents of the invention [0003] Aiming at the problems existing in t...

AI Technical Summary

Problems solved by technology

But now other types of micro-nano structures, such as micro-lenses, have complex preparation processes, require strict alignment and etching processes, have high requirements for equipment conditions and preparation processes, and are expensive

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