The windshield (American terminology) or windscreen (British terminology)  are generally made of laminated safety glass, a type of treated glass, whichconsists of two (typically) curved sheets of glass with a plastic layer lamination material between them for safety, and are glued into the window frame.

Today vehicle windshields are manufactured in many different shape, size and specifications to match each vehicle requirement.   We use glass only from selected windshield manufacturer like PPG, Pilkington and Carlite, which are the glass manufacturer for many car maker industry in the world.Safety Early windshields were made of ordinary window glass, but that could lead to serious injuries in the event of a crash. A series of lawsuits led up to the development of stronger windshields. The most notable example of this is the Pane vs. Ford case of 1917 that decided against Pane in that he was only injured through reckless driving. They were replaced with windshields made of toughened glass and were fitted in the frame using a rubber or neoprene seal. The hardened glass shattered into many mostly harmless fragments when the windshield broke. These windshields, however, could shatter from a simple stone chip. In 1919, Henry Ford solved the problem of flying debris by using a new technology founded in France called glass laminating. Windshields made using this process were actually two layers of glass with a cellulose inner layer. This inner layer held the glass together when it fractured. Between 1919 and 1929, Ford ordered the use of laminated glass on all of his vehicles. Split and raked windshield on a 1952 DeSoto. Note the panes of glass are flat.Modern, glued-in windshields contribute to thevehicle’s rigidity, but the main force for innovation has historically been the need to prevent injury from sharp glass fragments. Almost all nations now require windshields to stay in
one piece even if broken, except if pierced locally by a strong force. Properly installed automobile windshields are also essential to safety; along with the roof of the car, they provide protection to the vehicle’s occupants in the case of a roll-over accident.