OLED Display Panel Flexible Substrate Moisture Barrier

The patent employs a composite encapsulation structure combining organic polymer layers and inorganic barrier layers. The flexible polymer substrate is paired with alternating organic and inorganic layers to create a composite structure that provides both flexibility and effective moisture/oxygen barrier properties, preventing corrosion of OLED components while maintaining foldability.

The patent uses thin film encapsulation with multiple alternating organic and inorganic layers formed directly on the flexible polymer substrate. This thin film structure provides effective barrier protection against moisture and oxygen penetration while maintaining the flexibility and bendability of the overall display panel structure.

The encapsulation structure is segmented into multiple alternating organic and inorganic layers rather than using a single thick barrier layer. This segmentation provides superior moisture and oxygen blocking performance through the combined effect of multiple thin layers, while each layer remains relatively simple in composition and can be deposited using standard thin film techniques.

The patent implements thin film encapsulation with multiple alternating organic and inorganic layers that provide effective barrier protection in a compact, integrated structure. This approach achieves high reliability without requiring bulky additional components, as the barrier function is integrated into the thin film layers formed directly on the substrate.

The encapsulation layers are formed early in the manufacturing process, before the OLED functional layers are deposited. This preliminary formation of the encapsulation structure allows subsequent OLED layers to be deposited directly onto the pre-formed barrier layers, simplifying the overall manufacturing sequence and avoiding the need for complex post-assembly encapsulation steps.

The patent uses thin film deposition techniques to form the alternating organic and inorganic encapsulation layers. These thin films can be deposited using conventional vacuum deposition or atomic layer deposition (ALD) processes that are already standard in OLED manufacturing, allowing the barrier structure to be integrated into existing production lines without requiring entirely new manufacturing equipment or processes.