Abstract:
A system and method are provided for etching semiconductor wafers (integrated circuit substrates) with advanced packaging using a two-step wet etching process. The first etch step uses an etchant that is non-selective to at least the wafer material (silicon) and metals, such as copper and titanium, that are present in the wafer. The second etch step uses an etchant that is selective to the wafer material (silicon) and has low selectivity for the metals, thereby leaving them at least substantially intact.
Abstract:
An apparatus and method are provided to: determine a unique profile to etch each wafer, execute that etch, and determine and deliver the proper chemical addition in order to maintain etch rate within tight tolerances.
Abstract translation:提供了一种设备和方法,以:确定用于蚀刻每个晶片的独特轮廓,执行该蚀刻,并且确定和递送适当的化学添加以便将蚀刻速率维持在严格的公差内。 p >
Abstract:
An apparatus and method for mixing fluids with degradational properties are disclosed herein. The present system has been devised to safely and accurately dilute, heat and deliver a degradable fluid while simultaneously removing extraneous vapor, adding capability to monitor the temperature and capability to monitor the concentration of the diluted fluid.
Abstract:
A system and method for performing a wet etching process is disclosed. The system includes multiple processing stations accessible by a transfer device, including a measuring station to optically measure the thickness of a wafer before and after each etching steps in the process. The system also includes a controller to analyze the thickness measurements in view of a target wafer profile and generate an etch recipe, dynamically and in real time, for each etching step. In addition, the process controller can cause a single wafer wet etching station to etch the wafer according to the generated etching recipes. In addition, the system can, based on the pre and post-etch thickness measurements and target etch profile, generate and/or refine the etch recipes.