By using dynamical method based on the TDGL (time dependent GinzburgLandau) equation with the rebuilded LaplaceBeltrami operator in a spherical shell

the phase behaviors of linear AB diblock copolymer melt confined in the closed spherical shells have been studied.Our approach has focused on the effects of the shells' radius and thickness on the morphology.By analyzing the microscopic phase patterns and the distribution of the components in the shells

we found that with the increasing of the radius and the thickness of the spherical shell

the confinement that polymer chains suffered was reduced and the macroscopic order of morphologies was gradually lost.Especially with the variation of shell thickness

the significant changes of component distribution of two asymmetric blocks within the shell were observed.