716 069688 809 ESC Assy

The Lam Research 716 069688 809 ESC Assy belongs to the class of electrostatic chuck assemblies for semiconductor etch equipment. Machines and subassemblies of this class are not standalone process tools; they are critical internal wafer-support components that secure the substrate in place while the etch chamber operates under vacuum and plasma conditions.

Such assemblies sit at the center of the process zone and form part of the wafer stage or pedestal structure. In etch systems, this class of component combines mechanical support, electrostatic clamping, thermal coupling, and interface functions needed to present the wafer consistently to the plasma.

Electrostatic chuck assemblies hold a wafer by generating an electric field across a dielectric surface, creating an attractive force between the chuck and the substrate. In etch service, machines of this class are designed to keep the wafer stable and flat while exposed to reactive plasma, reducing movement and helping maintain repeatable process conditions across the wafer surface.

Such systems also typically act as part of the thermal control path between the wafer and the underlying temperature-controlled stage. In general operation, the chuck assembly supports heat transfer, provides a controlled process-facing surface, and interfaces with surrounding chamber hardware so that plasma exposure, bias coupling, and backside wafer handling can occur in a controlled way.

Electrostatic chuck assemblies in etch tools are generally used wherever wafer retention and thermal management are required during plasma-based removal of films. Typical use cases include pattern definition, dielectric etch, conductor etch, contact and via formation, and related anisotropic plasma processes in integrated circuit fabrication.