A composition for forming film having wrinkle structure and a method of forming the film are disclosed. The composition includes photo-curable agent and photoinitiator dissolved in the photo-curable agent. The cut off wavelength of light transmittance of the photo-curable agent is greater than the cut off wavelength of light absorbance of the photoinitiator. Photo-cured thin film is formed at the upper portion of composition layer at an initial time period of irradiation. By subsequent contraction, the photo-cured thin film forms wrinkles. The wrinkle structure is controlled by the relation of the cut off wavelength of light transmittance of the photo-curable agent and the cut off wavelength of light absorbance of the photoinitiator, the photo-curing rate of the composition and the thickness of the composition layer, and the photoinitiator concentration, etc., before photo-curing. The film may increase the emission efficiency of LED and OLED and the sensing effect of sensor.
本发明公开了一种用于形成具有皱纹结构的薄膜的组合物和形成薄膜的方法。该组合物包括光固化剂和溶解在光固化剂中的光
引发剂。光固化剂的透光截止波长大于光
引发剂的吸光截止波长。光固化薄膜在照射的初始阶段形成于成分层的上部。通过随后的收缩,光固化薄膜形成皱纹。皱纹结构由光固化剂透光截止波长和光
引发剂吸光截止波长的关系、光固化前成分的光固化速率和成分层厚度以及光
引发剂浓度等因素控制。该薄膜可提高 LED 和 OLED 的发射效率以及传感器的传感效果。