Thin-film encapsulation structure and method for oled

Abstract

Provided is a thin-film encapsulation structure for OLED, which includes a substrate loaded with an OLED, a first inorganic blocking layer, an organic buffer layer, and a second inorganic blocking layer. The refractive index of the first inorganic blocking layer is set to decrease along the direction from OLED to organic blocking layer, and the refractive index of organic blocking layer is smaller than that of first inorganic blocking layer, and the refractive index of second inorganic blocking layer is smaller than that of organic blocking layer. The refractive index change among the first inorganic blocking layer, the organic buffer layer, and the second inorganic blocking layer enhances the luminous efficiency and isolate the moisture and oxygen from entering OLED, prevents the interior of OLED from being corroded and improves thermal insulation effect. The organic buffer layer can wrap extrinsic substance in large particle and alleviate stress during planarization process.

Dependencies are inferred from the claim text.