Abstract: The riddled basin of the chaotic synchronized attractor in linear coupled standard tent maps is studied and proved.The notion of riddled factor is presented.Acc ording to it,the critical value of the coupling at which locally-globally bifurcation occurs is found and the analytical expression of transverse Lyapunov exponent is also revised.It is shown that in chaotic synchronization the riddled basin plays an important role.

Keywords: 
• chaotic synchronization /
• riddled basin /
• coupled tent map