The lamination of substrate to cover glass is an extremely critical, complicated and important step in the entire encapsulation process. An effective encapsulation of the substrate can provide essential protection of the active layers from harmful components like oxygen and moisture as well as mechanical stress. Therefore, this process step is the prerequisite for a stable and durable OLED device.
The process involves transferring the cover glass with previously applied desiccant and adhesive along with the EL glass into the process chamber. After the glass-2-glass alignment is achieved, the glasses are pressed against each other under vacuum conditions. MBRAUN's proprietary non-contact, gas pressurized lamination principle allows the application of highly uniform pressure across the entire substrate area, resulting in a bubble free gas tight sealing.
The high intensity UV Source cures the adhesive within seconds whilst the active device area is shielded from irradiation via the optical filter. The core system components are:
- The high intensity UV Source with a combined shutter/reflector system
- The vacuum process chamber with its integrated lamination stage (quartz glass)
- The combined receiving/alignment chuck (glass-2-glass alignment)
- The vertical linear drive mechanism
MBRAUN offers three different types of lamination tools to better meet your needs.
Please contact us for more information regarding our lamination process tools.