Decoding the Mystery: The Meaning of the Black Dots on Your Car’s Windshield Experts describe the black dots on car windshields as critical but often overlooked. These dots are part of the frit band, a textured enamel paint strip that runs around the edge of the windshield.
This band «ensures that the windshield is securely attached to the vehicle.» The black dots protect the adhesive from harmful UV radiation by preventing sunlight from weakening the adhesive bond over time.
The dot matrix, made up of smaller dots, ensures even temperature distribution across the windshield during production. This step avoids optical distortion or «lensing» and ensures that straight lines on the glass remain true. The gradual fading of the black dot matrix creates a visually pleasing transition from transparent glass to the black frit border.
This design strengthens the structural integrity of the windshield and reduces the likelihood of damage. Essentially, those seemingly insignificant black spots on your windshield serve multiple functions and are essential to your car’s complex engineering.
