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采用旋转涂布法制备空穴传输层聚二氧乙基噻吩/聚对苯乙烯磺酸过程中,设置高低转速相结合的方式,调转基片方向实施二次旋涂干燥成膜,有效改善了材料因基片开口设计而引起的单双行薄膜厚度不均匀现象.由于增加了功能层薄膜的均匀性,从而改善了显示屏的整体发光均匀性与发光效率.改进工艺后制备的绿光显示屏电流效率提高了近40%,并得到了电流效率达1.25cd/A的96×64的3.81cm全彩高分子发光点阵显示屏,发光亮度提高了近25%.
In the process of preparing the hole transport layer polyoxyethylene thiophene / poly (p-styrenesulfonic acid) by the spin coating method, a combination of high speed and low speed is set, and the direction of the substrate is adjusted to perform secondary spin-coating to form a film, thereby effectively improving the Material due to the opening of the substrate caused by the design of single and double line film thickness uneven phenomenon due to an increase in the uniformity of the functional layer of the film to improve the display of the overall luminous uniformity and luminous efficiency of the green process to improve the preparation of the display The screen current efficiency is increased by nearly 40%, and the 96 × 64 3.81cm full-color polymer light-emitting dot matrix display with current efficiency of 1.25cd / A is achieved, and the luminance of the display is improved by nearly 25%.