Patent ID: 9741966
Date: 2017-08-22
CPC Classifications: H01L

Claim:
1. A method for forming an encapsulating structure on an organic light emitting diode (OLED) substrate, comprising: forming a first inorganic layer on a region of a substrate, wherein the substrate has an OLED structure disposed thereon; forming a hybrid inorganic/organic gradient layer on the first inorganic layer in a processing chamber, wherein the hybrid inorganic/organic gradient layer comprises an inorganic sublayer and an organic sublayer, wherein the hybrid inorganic/organic gradient layer comprises plasma-polymerized hexamethyldisiloxane (pp-HMDSO), and wherein the inorganic sublayer is formed by providing a first flow ratio of a gas comprising nitrous oxide to HMDSO gas of about 10 or greater, and wherein the organic sublayer is formed by providing a second flow ratio of the gas comprising nitrous oxide to HMDSO gas of less than about 2, and forming a second inorganic layer on the hybrid inorganic/organic gradient layer in the processing chamber, wherein the first inorganic layer and the second inorganic layer are formed by providing the first flow ratio of the gas comprising nitrous oxide to hexamethyldisiloxane (HMDSO) and the hybrid inorganic/organic gradient layer is formed by providing the second flow ratio different from the first flow ratio of the gas comprising nitrous oxide to HMDSO.