What is a photomask?

Photomask is an opaque plate used in lithographic processes. The openings or openings on the opaque surface are arranged to allow the light to shine, which converts the formula from the photomask to another material such as paper. Photoists are commonly found in production semiconductors, where they precisely transmit images and arrangement of integrated circuits into the plate with circuits. This process is known as photolithography. Modern technologies require smaller components that allow the existence of equipment such as very small hand computers and other small technologies. Without photo masks or lithography, the arrangement of circuits and chips in these devices could not be transmitted accurately. Because of the unique depodepsat specifications of each manufacturer, companies that produce photomass, they must have a thorough understanding of design. One of the most important parts of the production of photo masks is the mask itself. In most cases, the mask is made of high quality chrome, due to its accuracy and low disorder.

Photomasks play an essential role in the production of semiconductors that require lithographic procedures. Modern lithographic tools equipped with high aperture lenses are used to transmit light via Photomaske. The light projected from these devices shines through the pattern in the photo, which is reflected in the silicon plate. The plate emerges with a photoresist, which is a light sensitive material. Then a negative photoresist is used to remove the masked part of the material; A positive photoresist is used to reverse the process.

Every layer of chip requires a unique photo. Most semiconductors have at least 30 layers, resulting in a need for at least 30 unique photo masks for each semiconductor. However, photomobas are much more than just a way to trace the formula on the chip. This is because the arrangement of the circuit is very accurate and their patterns must be transmitted as accurately as possible. Lithography allows extremely accurate design transmission.

PhotoMassses help with miniturizing computer chips. This is because smaller chips require high -precision images of their general arrangement, which is almost impossible without a lithographic process. Without a photo of the small hand computers, small manual computers would be almost impossible because their small circuits and chips require accurate arrangement.