Used ACM Research ULTRA ECP AP Semiconductor Electroplating System

The ULTRA ECP AP is a 300mm wafer-level electrochemical deposition (electroplating) system from ACM Research. Part of the company’s ULTRA ECP series, it is specifically configured for advanced packaging and back-end copper interconnect applications.

Process Focus: The system utilizes electroplating to deposit metal layers—such as copper—for applications including Under-Bump Metallization (UBM), copper pillars, Redistribution Layers (RDL), and copper interconnects in wafer-level packaging. It addresses key technical challenges such as achieving uniform film thickness for micron-scale metal interconnects and ensuring defect-free filling of high-aspect-ratio structures. This process stage is distinct from the Atomic Layer Deposition (ALD) or Chemical Vapor Deposition (CVD) techniques used in front-end manufacturing, which prioritize atomic-level precision.

Design Characteristics: The ULTRA ECP AP prioritizes film thickness uniformity, high-quality filling, and repeatability for high-volume manufacturing. It features precision plating cells with advanced flow-field control and is optimized to mitigate wafer-edge effects. The system supports automated wafer handling and recipe management, meeting the throughput and stability requirements of mass-production lines. Leveraging ACM Research’s extensive expertise in electroplating and wet-processing technologies, the platform offers unique advantages in plating-bath management and process flexibility.

Market Context: Competing in the advanced packaging electroplating sector—alongside systems like Applied Materials’ Nokota ECD and RAIDER Edge ECD, or ASMPT’s Stratus P300/P500—the ULTRA ECP AP is classified as electroplating equipment rather than thin-film deposition equipment. It belongs to a different category—in terms of both process stage and film-formation mechanism—than the front-end ALD/CVD tools you have previously explored.

In short, the ULTRA ECP AP is one of ACM Research’s primary high-volume production platforms for 300mm wafer-level packaging electroplating.