What is the black area on the car's windshield?
2 Answers
The black area on the car's windshield consists of black particles that help distribute heat more evenly, preventing the windshield from cracking. There are black areas and small dots around the edges of the windshield, which are particularly important. Without these features, the windshield might crack after prolonged exposure to intense sunlight in summer. Car windshields are typically designed as a single-piece, large curved surface with specific curvatures on all sides. This curved glass is a highly technical product, both in terms of manufacturing and installation, as it involves considerations such as vehicle model, strength, heat insulation, and assembly.
I've also pondered this question while driving. Actually, the black border around the edge of the windshield is technically called 'frit band' or 'black ceramic layer'. Its most practical function is sun shading, like putting a sunglasses visor inside the car. This circular design precisely blocks dashboard reflections - otherwise, distracting glare would constantly float on the steering wheel. During summer scorchers, it also blocks UV rays to protect the windshield adhesive from aging. But modern premium cars go beyond this basic function. Those dotted areas under the rearview mirror base are actually special ceramic coatings embedding rain-sensing wiper sensors. If you look closely, you'll notice the black edge gradually transitions to transparent glass, ensuring natural visual continuity while driving.
