Patent ID: 6935638
Filing Date: 2005-08-30
Classification: B23B,H01L,Y10T

Abstract:
1. A universal substrate holder for treating an object in a fluid, comprising: a housing with a bowl which can be filled with a processing liquid; first support means installed in said housing; a base platform rigidly attached to said first support means and capable of supporting said object; second support means that can slide relative to said first support means but cannot rotate independent of said first support means, said second support means having protruding means passing through said base platform for supporting said object; object clamping means rigidly connected to an annular plate arranged below the base platform, wherein the object clamping means passes through said base platform for clamping said object above said base platform; rotary drive means for rotating said first support means; and linear drive means for causing said second support means to preform said slide relative to said first support means in a first direction to a first position in which said protruding means are raised above said base platform to provide a space between said object and said base platform, and in a second direction in which said protruding means assume a second position to place said object above said base platform, said object clamping means having a clamp actuation member capable of turning under the effect of centrifugal forces developed when said rotary drive means rotates said first support means for clamping said object above said base platform when said second support means is moved said first position, said clamp actuation member being capable of clamping said object above said base platform due to engagement with said base platform when said second support means is moved to said second position.