Have you ever wondered why there are small black dots or black patterns around the edges of the windshields and other windows in a car? These black dots might look decorative, but they serve a very important purpose.

In fact, these dots have been a feature on car windows since the 1950s and 60s. During that time, adhesives like glue or sticky materials were used to hold the car windows in place. While these materials were effective, they looked unattractive.

As a result, companies started adding black rimmed edges to the windows, known as frits. These frits were made from ceramic paint and were used to hide the adhesive materials. Over time, the frits were replaced with black dots, which looked more aesthetically pleasing compared to a thick black strip.

The placement of these dots is also very important, following a half-tone pattern. Apart from looking good, these dots serve another crucial function. They help regulate the temperature of the windows.

Car windows and windshields can get very hot when exposed to sunlight, especially the black-painted areas, which absorb heat faster. These black dots help distribute the heat more evenly, preventing damage to the windshield and windows from overheating.