Optical and Environmental Requirements for Display Applications

Rockwell Collins has developed a robust, repeatable, low cost lamination process that utilizes a dry bond technology (using PSA) to directly couple substrates to display technology such as liquid crystal displays (LCD’s) and organic light emitting diodes (OLED’s). These substrates can serve as protective covers, reflection mitigation, heaters, filters, touch screens, environmental barriers, etc. This resultant assembly is very rugged; shock, impact, and vibration resistant, while maximizing optical performance. The optical requirements for these applications can be quite demanding, especially for cockpit applications. This paper will discuss the optical requirements used to qualify an adhesive for use in display applications. The optical requirements will include total specular reflectance for a full display stack, spectral specular reflectance by layer, diffuse reflectance, birefringence, and internal transmission. In addition, key environmental tests required for avionics display applications will be defined. This section will include thermal and humidity profiles, altitude, solar exposure, and boot-kick requirements