Although there are a number of approaches to go about this, they usually involve printing or drawing a mask that is used to expose the photoresist layer on the to-be-etched PCB. Here [Andrew ...

As China strides to build a self-sufficient semiconductor industry, it has to develop not only sophisticated chipmaking tools ...

Then, again using projected photoresist masks, areas of the chip are doped to become N-type silicon, another crucial part of a transistor. Lastly, metal leads are added to connect the various ...

An image of a mask containing the structure of an integrated circuit (IC) is projected onto a silicon wafer, which is coated with a light-sensitive material known as a photoresist. When the ...

Ultraviolet (UV) light is shone through the photomask, exposing the photoresist underneath except where the mask blocks the light. The exposed areas of the photoresist become soluble (in positive ...