The anti-ultraviolet principle of titanium nitride metal magnetron window film lies in its unique material structure and preparation process. During the magnetron sputtering process, by precisely controlling the sputtering parameters and reaction conditions, the titanium nitride film can form a dense protective layer that effectively absorbs and reflects ultraviolet radiation in sunlight. Experimental data shows that this window film can block more than 99% of harmful ultraviolet rays, providing nearly perfect protection for drivers and passengers.