Without these dots, the glass could become loose and eventually fall out of the frame. These frits are also there for aesthetic purposes.

  • naeap@sopuli.xyz
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    1 year ago

    I thought the transition from pure black to window with dots was made for thermic reasons, so there is not a hard line between hot and cold glass, and with that less stress on the material.

    The complete black border is probably for holding it to the glue, I suspect.

    • mikkL@lemmy.worldOP
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      1 year ago

      As they write in the article:

      the windshield glass in modern cars is bonded to its frame using a strong and long-lasting urethane adhesive.

      “This makes the windshield a structural component of the vehicle’s body,” explained Reina. “The frit is black painted enamel that’s baked onto the surface of the glass, and it provides a secure point of contact between the glass, urethane adhesive, and windshield frame.”

      • SulaymanF@lemmy.world
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        1 year ago

        I also quoted the article. I understand that part and the black stripe, but I don’t understand how the dots help in this.

        • scutiger@lemmy.world
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          1 year ago

          The dots themselves don’t do anything, but the black border does. But if you see the dots coming off the glass, it’s a sign that the frit around the edge may also have started detaching from the glass.

  • ParadoxSeahorse@lemmy.world
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    1 year ago

    Afaik the dots are just an aesthetic choice, the black border is functional.

    Source: my old oem one had no dots, my new one does, tech said as much

  • Navarian@lemm.ee
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    1 year ago

    Huh, that’s pretty neat. I always wondered what that was for.

    I wonder if it needs to be dots or if other shapes would do just fine and dots were the cheapest in regard to manufacturing.

    • mikkL@lemmy.worldOP
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      1 year ago

      Probably for a smooth transition between the black and the glass. Or maybe both.