Ad
related to: how to make semiconductor wafer frosting with butter and oil change price
Search results
Results From The WOW.Com Content Network
The lenses in the highest resolution "dry" photolithography scanners focus light in a cone whose boundary is nearly parallel to the wafer surface. As it is impossible to increase resolution by further refraction, additional resolution is obtained by inserting an immersion medium with a higher index of refraction between the lens and the wafer.
Wafer fabrication is a procedure composed of many repeated sequential processes to produce complete electrical or photonic circuits on semiconductor wafers in a semiconductor device fabrication process. Examples include production of radio frequency amplifiers, LEDs, optical computer components, and microprocessors for computers. Wafer ...
The silicon laser is fabricated by a technique called plasma assisted wafer bonding. Silicon waveguides are first fabricated on a silicon on insulator (SOI) wafer. This SOI wafer and the un-patterned III-V wafer are then exposed to an oxygen plasma before being pressed together at a low (for semiconductor manufacturing) temperature of 300C for 12 hours.
[55] [56] The semiconductor industry has adopted larger wafers to cope with the increased demand for chips as larger wafers provide more surface area per wafer. [57] Over time, the industry shifted to 300 mm wafers which brought along the adoption of FOUPs, [ 58 ] but many products that are not advanced are still produced in 200 mm wafers such ...
A robot in the wafer loader picks up one of the wafers from the cassette and loads it onto the wafer stage where it is aligned to enable another, finer alignment process that will occur later on. The pattern of the circuitry for each chip is contained in a pattern etched in chrome on the reticle, which is a plate of transparent quartz .
Etching is a critically important process module in fabrication, and every wafer undergoes many etching steps before it is complete. For many etch steps, part of the wafer is protected from the etchant by a "masking" material which resists etching. In some cases, the masking material is a photoresist which has been patterned using photolithography.
A wafer-level package attached to a printed-circuit board. Wafer-level packaging (WLP) is a process in integrated circuit manufacturing where packaging components are attached to an integrated circuit (IC) before the wafer – on which the IC is fabricated – is diced. In WLP, the top and bottom layers of the packaging and the solder bumps are ...
After curing an artificial wafer containing a mold frame around the dies for carrying additional interconnect elements is created. After the build of the artificial wafer (the so-called reconstitution) the electrical connections from the chip pads to the interconnects are made in thin-film technology, as for any other classical wafer level package.