P‐9.17: Design of Touch Screen Architecture with Low Reflection and High Reliability in Cockpit Display System

Touchscreen, as an important medium for human‐computer interaction, has been widely used in the civilian market. With the development of touch technology, touch design is also gradually being adopted in the airborne cockpit display system. In order to meet the application requirements of special display, it is necessary to reduce the reflectivity of the resistive touch screen and improve its reliability. In this paper, based on the principle of polarization and phase deflection of light, the combination strategy of circular polarizer and quarter‐wave plate was used to reduce reflected light of the five‐wire resistive touch screen. The results of performance tests show that the proposed design of the resistive touch screen has lower surface haze and mirror reflection, better electromagnetic compatibility effect than the conventional resistive touch screen. Moreover, the low‐reflection touch screen was fully bonded to the LCD screen by using liquid optical adhesive, which greatly reduced the impact of vibration on the overall structure of the touch screen. This work optimizes the structure of the five‐wire resistive touch screen and achieves an acceptable effect to realize low reflection and high reliability in the airborne cockpit display system.