Polarized sunglasses often cause display irregularities during daily use. When worn, they not only restrict viewing angles but may also produce rainbow patterns or screen blackout issues, which are particularly noticeable in high-frequency usage scenarios like maritime navigation, aviation, and rail travel.
To address these challenges, we have achieved a breakthrough in optical compatibility through technological innovation, ensuring users maintain a stable and smooth touchscreen visual experience while wearing polarized sunglasses.
1. Rainbow Patterns and Screen Blackout Issues
Causes of Rainbow Patterns
When touchscreens use PET (ITO film) substrates, light passing through this birefringent material splits into two polarized beams. When viewed through polarized sunglasses, these beams interfere to form colorful stripes, impairing display quality.
Screen Blackout Issues
For glass-based touchscreens, if the polarizing filter of the sunglasses is at a 90-degree angle to the polarizer on the LCD, light is completely blocked, rendering the screen content unrecognizable.
2. Technical Solutions
Rainbow Pattern Elimination Technology
We employ glass sensor technology (DITO/SITO structure) to fundamentally eliminate birefringence through substrate property optimization, ensuring color accuracy and clarity remain intact when viewed through polarized sunglasses.
Screen Blackout Issue Prevention Solution
By introducing an optical compensation layer, we effectively neutralize interference between polarized sunglasses and the touchscreen's polarizing layer. This solution adapts to varying light conditions, ensuring stable visibility from bright outdoor environments to dim indoor settings.