Dispersive armor
Dispersive armor was a type of armor the Klingons employed during the mid-22nd century to protect the bridges on their Birds-of-Prey. This armor was immune to the weapons of an  starship. 

In 2154, during the Augment Crisis, Arik Soong told Captain Jonathan Archer not to fire on the bridge of Malik's Bird-of-Prey, as its dispersive armor made it immune to Enterprise's weapons. ()

See also 
Ablative armor
Ablative generator
Reactive armor

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nl:Spreidend pantser
Shield technology