Memory Process Integration Engineer

Project

Work done for a product or program.

• Own the memory cell integration flow — DRAM capacitor and buried word line, or 3D NAND channel hole, staircase and word line stack.
• Drive high-aspect-ratio module integration, controlling channel hole profile, bow, twist, tilt and CD taper across 200-plus stacked layers.
• Optimise cell-level electrical distributions including Vt spread, cell current, retention time and program/erase window.
• Manage wafer stress and warpage from thick stacks, coordinating film stress budgets with deposition and litho overlay.
• Integrate periphery and array flows, including CMOS-under-array or wafer-bonded periphery architectures.
• Drive bit-failure-map-based yield learning, translating single-bit, row, column and block failure signatures into module actions.
• Support redundancy and repair strategy with design and test teams so process capability and repair budget match.
• Own retention, endurance and disturb reliability characterisation loops with reliability and product engineering.
• Plan and execute scaling steps such as additional stack tiers, string stacking or capacitor aspect-ratio increases.

Function

Work that keeps the discipline running: methods, tools, suppliers and people.

• Coordinate cost-per-bit roadmaps with process, equipment and planning teams.

Project

1. Produce and hand over the role's key deliverables
   • Released memory cell integration flow and process of record
   • High-aspect-ratio profile control specification
   • Cell electrical distribution and repair budget analysis
   • Bit failure map yield learning reports
   • Cost-per-bit and scaling roadmap inputs
2. Introduce new productsGeneral
   • Set up and qualify the process
   • Transfer it to production
   • Support the ramp
3. Keep production in controlGeneral
   • Monitor statistical process control charts
   • Contain excursions
   • Close corrective actions

Function

1. Maintain the process baselineGeneral
   • Keep specifications and control plans current
   • Manage changes through change control
2. Improve the operationGeneral
   • Reduce cost and cycle time
   • Work with suppliers on quality