Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Laser technology advances microchip production*

21.05.2015

A new process for cutting silicon wafers could streamline the production of smaller and more powerful microchips for electronic devices.

Electronic chips are built on small pieces of silicon that are cut from silicon sheets, called wafers, in a process known as dicing. Currently, dicing is performed by mechanical sawing or laser cutting, but these approaches can cause problems.


Silicon wafer during production.

Copyright : 123rf.com

Sawing can cause thin wafers to break or layers of silicon to separate. The heat generated by laser cutting can leave micro cracks in the silicon and produces molten debris. Coolants or protective coatings are then required, adding to the production cost.

A team of researchers at the A*STAR (Agency for Science, Technology and Research) Singapore Institute of Manufacturing Technology has developed a new technique that uses laser-induced thermal cracking technology.

The silicon expands as a near-infrared laser heats it, then contracts as it cools, leading to stress that causes the silicon to break along the laser line.

The result is a crackfree silicon chip with a smooth surface finish. The process creates no debris, cuts 10 to 20 times faster than currently used techniques, and increases productivity because more silicon pieces can be cut from one wafer.

Together with the fact that the near-infrared laser is energy-efficient and consumes little power, these improvements over sawing and laser cutting result in a dramatic improvement in efficiency.

According to the research team, the new dicing technology will advance the production of microchips for electronic devices. It will enable the production of chips that are thinner and capable of supporting higher processing speeds, making for smaller and more powerful devices.

For further information contact:
Dr Wang Zhongke
Singapore Institute of Manufacturing Technology
Agency for Science, Technology and Research,
Singapore
E-mail: zkwang@simtech.a-star.edu.sg

*This article also appears in Asia Research News 2015 (p.56).


Associated links
Read Asia Research News 2015
Download a copy of Asia Research News 2015 for free

Lee Swee Heng | ResearchSEA
Further information:
http://www.research.a-star.edu.sg
http://www.researchsea.com

More articles from Process Engineering:

nachricht Diamond watch components
18.06.2018 | Schweizerischer Nationalfonds SNF

nachricht Quick and safe laser joining of steel-aluminum mixed connections
05.06.2018 | Laser Zentrum Hannover e.V.

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

Im Focus: Photoexcited graphene puzzle solved

A boost for graphene-based light detectors

Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...

Im Focus: Water is not the same as water

Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.

From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Novel method for investigating pore geometry in rocks

18.06.2018 | Earth Sciences

Diamond watch components

18.06.2018 | Process Engineering

New type of photosynthesis discovered

18.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>