OLED preparation process -- Ultrasonic spraying

OLED preparation process -- photoelectric field -- YMUS ultrasonic spraying

OLED (Organic Light Emitting Diode) is an organic light-emitting diode, with thin, light, transparent, flexible and other characteristics. OLED has the advantages of electroluminescence, pure color, high contrast, fast response, wide viewing Angle, etc., and is widely used in display, lighting and biomedical fields. The preparation of OLED chips should be based on a substrate with good light transmission, such as glass, plastic, ceramic or metal. The preparation of substrate requires excellent properties such as flat surface, easy deformation, low thermal expansion, easy cleaning and dimensional stability, so as to facilitate subsequent film preparation and other processing processes.

‍‍‍OLED‍‍‍

Ultrasonic Spray Coating is an efficient, repeatable and low-cost coating method, which is suitable for common materials and inks, but also for special relatively pure compounds and nanoparticles, especially for OLED coating preparation.

The conductive layer material, luminescent layer material, electron transport material and anode and cathode material are dispersed and stirred by using YMUS-FSJB. Adjust the operating parameters of the ultrasonic head, as well as spraying speed, distance, flow and other parameters to ensure the size, accuracy and uniformity of the particles required for rendering. The coating preparation is divided into several steps, such as the bottom coating, preparation buffer layer, energy dissipation layer, luminescent layer, conductive layer, transparent conductive zinc oxide layer, protective layer and encapsulation layer. After the coating is prepared, a drying step is required. Commonly used drying methods are air drying, oven drying, vacuum drying, nitrogen drying and so on.

The prepared OLED coating is tested to observe the coating thickness, flatness, color, electrical conductivity, etc., and the necessary follow-up treatment is carried out, such as removing bubbles, grinding and coating defect treatment.

Ultrasonic spraying to prepare OLED coating is an efficient, low-cost preparation method for a variety of common materials. It can prepare high-quality OLED coatings, and shows high uniformity, relatively uniform thickness, and small particle size uniformity, which can greatly improve the process efficiency and cost control of OLED preparation.