OLED encapsulation structure, protective film therefor, and manufacturing method of the protective film

An organic light-emitting diode (OLED) encapsulation structure comprising:

• a base layer;
• a connecting layer;
• an OLED encapsulation layer, the OLED encapsulation layer comprising a first inorganic material layer, a second inorganic material layer, and an organic material layer disposed between the first inorganic material layer and the second inorganic material layer;
• and
• a protective layer, the protective layer disposed on a top portion of the OLED encapsulation layer,
• wherein the protective layer is a protective film for the OLED encapsulation layer, and
• wherein the protective film comprises a base film and an auxiliary film disposed on at least two opposite sides of the base film and connected to the base film, wherein the auxiliary film is softer than the base film, wherein when the protective film covers the OLED encapsulation layer, the base film covers a top portion of the OLED encapsulation layer, and the auxiliary film covers at least two opposite sides of the OLED encapsulation layer,
• wherein the auxiliary film extends to the base layer, to extend to the base layer along the peripheral surface of the OLED encapsulation structure and extend to side surfaces of the base layer, the auxiliary film covers the side surfaces of the OLED encapsulation layer,
• wherein the base film comprises a first base film and a second base film, and the first base film and the second base film being stacked on one another;
• wherein the auxiliary film comprises a first auxiliary film and a second auxiliary film, and the first auxiliary film and the second auxiliary film being stacked on one another;
• and wherein the first auxiliary film is connected to at least two opposite sides of the first base film, and the second auxiliary film is connected to at least two opposite sides of the second base film,
• wherein the material of the second auxiliary film is softer than the material of the first auxiliary film, and is able to bend, stretch, or deform, and
• wherein adhesion of the second auxiliary film is less than or equal to adhesion of the first auxiliary film.