Direct dry film optical bonding ‐ A low‐cost, robust, and scalable display lamination technology

A robust, repeatable, low‐cost lamination process that utilizes pressure‐sensitive adhesive (PSA) to directly bond substrates to displays, such as LC, OLED, plasma, and electrophoretic displays, has been developed. These substrates can vary in intent and serve as protective covers, reflection mitigation, heaters, filters, touch screens, environmental barriers, etc. The resultant assembly is very rugged (shock, impact, and vibration resistant), while maximizing optical performance. This paper briefly describes the traditional liquid bonding technologies and compares them to dry‐film bonding. A section of the paper focuses on the enhanced optical and environmental performances of dry‐film bonded displays. This paper may also serve as a brief review of optical‐bonding technologies.