Roll-to-roll processing

Roll-to-roll processing

Roll-to-roll processing, also known as 'web' processing, is the process of creating electronic devices on a roll of flexible plastic or metal foil. Large circuits made with thin-film transistors and other devices can be easily patterned onto these large substrates, which can be up to a few metres wide and 50 km long. Some of the devices can be patterned directly, much like an inkjet printer deposits ink. For most semiconductors, however, the devices must be patterened using photolithography techniques.

Roll-to-roll processing is a technology which is still in development. If semiconductor devices can be fabricated in this way on large substrates, many devices could be fabricated at a fraction of the cost of traditional semiconductor manufacturing methods. Most notable would be solar cells, which are still prohibitively expensive for most markets due to the high cost per unit area of traditional crystalline silicon manufacturing. Other applications could arise which take advantage of the flexible nature of the substrates, such as electronics embedded into clothing, large-area flexible displays, and roll-up portable displays.

ee also

*Amorphous silicon
*Low cost solar cell
*Pilot plant
*Thin-film transistor

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Roll film — Rollfilm or roll film is any type of spool wound photographic film protected from white light exposure by a paper backing, as opposed to film which is protected from exposure and wound forward in a cartridge. Confusingly, roll film was originally …   Wikipedia

  • roll back —    The ability of a database management system to abort a transaction against the database before the transaction is complete and return to a previous stable condition.    See also roll forward; transaction processing …   Dictionary of networking

  • roll forward —    The ability of a database management system to re create the data in the database by rerunning all the transactions listed in the transaction log.    See also roll back; transaction processing …   Dictionary of networking

  • cereal processing — Introduction       treatment of cereals (cereal) and other plants to prepare their starch for human food, animal feed, or industrial use.        Nutrient composition of selected raw cereal grains (per 100 grams)Cereals, or grains, are members of… …   Universalium

  • transaction processing —    A processing method in which transactions are executed immediately when they are received by the system, rather than at some later time as in batch processing systems. Airline reservation databases and automatic teller machines are examples of …   Dictionary of networking

  • Coin roll hunting — (often abbreviated CRH ) is the hobby of searching change pulled from circulation for collectible coins. The serious hobbyist usually obtains his coins from banks in the form of rolled coins. Coin roll hunters obtain in the U.S., rolls of pennies …   Wikipedia

  • mineral processing — or ore dressing Mechanical treatment of crude ores to separate the valuable minerals. Mineral processing was at first applied only to ores of precious metals but later came to be used to recover other metals and nonmetallic minerals. It is also… …   Universalium

  • Sampling (signal processing) — Signal sampling representation. The continuous signal is represented with a green color whereas the discrete samples are in blue. In signal processing, sampling is the reduction of a continuous signal to a discrete signal. A common example is the …   Wikipedia

  • Digital Light Processing — Logo de la technologie DLP La technologie Digital Light Processing (abrégé en DLP, qu on pourrait traduire par « traitement numérique de la lumière ») est utilisée dans les vidéoprojecteurs, ainsi que dans certains téléviseurs. À l… …   Wikipédia en Français

  • Solar cell — A solar cell made from a monocrystalline silicon wafer …   Wikipedia