5 crucial steps in semiconductor manufacturing
Devices such as smartphones, smart watches, gaming consoles etc. are classic examples of how technology has evolved and the power these devices hold comes from the microchips which are small but extremely powerful pieces of technology which are manufactured through a process which is not simple. Here we will explain the 5 crucial steps involved in semiconductor manufacturing: Deposition: The process starts with a silicon wafer. Wafers are cut from an ingot (bar with 99.99% silicon) and are polished until they are smooth. Thin films of isolating, semiconducting or conducting materials are then deposited on the wafer so that the first layer gets printed on it. This process is called deposition. Photoresist coating: After the deposition phase, the wafer is covered with either a positive or negative light sensitive coating which is called resist or photoresist. In the positive resist, the areas that are exposed to ultraviolet light change their structure and are made more soluble for dep