The viewing angle of a touchscreen display (i.e., the visibility and color accuracy of the screen content when viewed from different angles) is influenced by various factors, primarily the following:
1. Display technology type
LCD (liquid crystal display):
TN panel: Narrow viewing angle (typically around 160° horizontally/vertically), with color shift or reduced contrast when viewed at an angle.
IPS/PLS panels: Wide viewing angles (up to 178°), high color stability, but may experience slight degradation due to touch layer design.
VA panels: Viewing angles fall between TN and IPS, with potential brightness reduction when tilted.
OLED/AMOLED: Self-emissive properties enable extremely wide viewing angles (nearly 180°), with minimal color and brightness loss when tilted.
2. Surface treatment and cover materials
The choice of screen material also significantly impacts viewing angle width. High-quality glass substrates and advanced coating technologies reduce light reflection and scattering, enhancing screen transparency and viewing angle width.
3. Manufacturing process: Manufacturing precision and quality control also influence viewing angle width. Precise manufacturing processes and rigorous quality inspections ensure consistent display performance across all angles.