Info
Info
News Article

Solar-Tectic Announce New Thin-film Displays Technology

News

Thin-film transistor technology has potential to replace low temperature polysilicon for making OLEDs

Solar-Tectic LLC has announced a breakthrough display technology that replaces the standard LTPS (low temperature polysilicon) process used world-wide by major display manufacturers.

LTPS is a process central to the manufacture of thin-film transistors (TFTs) used in AMOLED displays (Active Matrix Organic Light Emitting Diodes), LCD displays, and micro-LED technologies. Yet LTPS is lacking in several respects, such as current, uniformity and scale-up for larger size displays.

The new process, which Solar-Tectic is calling 'LT1CS' or 'Low temperature single crystal silicon' emphasises the single crystal-like silicon quality, which arises from the highly oriented c-axis aligned or 'textured' silicon crystals. LTPS in contrast uses polycrystalline silicon.

It is well known that oriented or aligned crystalline thin-films perform much better than polycrystalline thin-films on many levels. In addition, the new 'LT1CS' process can achieve films with large grains or crystals which also enhance performance in the backplane of displays.

Electron mobility in textured, aligned thin silicon films would be higher than in IGZO (indium gallium zinc oxide) which is another contender to replace LTPS, and uniformity in the LT1CS technology would also be better, according to the company. Currently IGZO performance is lower than LTPS with regard to both electron mobility and uniformity. IGZO also consists of indium and gallium .

Solar-Tectic says its LT1CS technology is similar to CAAC-IGZO, which is c-axis aligned IGZO. In a way, one could say that LT1CS does for silicon what CAAC-IGZO does for IGZO. The company's technology, which includes III-V materials like GaN, could also be used in the emerging micro-LED (µLED), field which combines III-V materials with silicon thin-film transistors.

The highest quality TFTs in today's market require fabrication on a quartz substrate due to the high temperatures necessary for the quality film growth. ST's LT1CS technology is a low temperature process which means ordinary soda-lime glass can be used, saving costs of production.

The ST technology was recently patented (see US patents 9,054,249 B2; US 9,722,130 B2; and US 8,916, 455 B2). Relevant papers have also been published demonstrating the core technology. A patent has also recently been granted for III-V/silicon thin-film LEDs and transistors (see US 9,818,964).

The technology was invented by the late Praveen Chaudhari, a materials physicist, and recipient of the US National Medal of Technology, and Ashok Chaudhari, CEO of Solar-Tectic LLC.



AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.

REGISTER FOR FREE

VIEW SESSIONS
Panasonic Microelectronics Web Seminar
ITRI And DuPont Inaugurate Semiconductor Materials Lab
Imec Demonstrates 20nm Pitch Line/Space Resist Imaging With High-NA EUV Interference Lithography
Obducat Receives Order For Fully Automated Resist Processing Tool From A Customer In Asia
U.S. Department Of Defense Partners With GLOBALFOUNDRIES To Manufacture Secure Chips At Fab 8
TEL Introduces Episode UL As The Next Generation Etch Platform
EV Group Establishes State-of-the-art Customer Training Facility
K-Space Offers A New Accessory For Their In Situ Metrology Tools
Onto Innovation Announces New Inspection Platform
Tower Semiconductor Announced Program Creating An Integrated-Laser-on-Silicon Photonics Foundry Process
Siemens And ASE Enable Next-generation High Density Advanced Package Designs
ASML Reports €14.0 Billion Net Sales
GOODFELLOW Confirms Membership In The BSI UK Graphene Group
Belgian Initiative For AI Lung Scan Analysis In Fight Against COVID-19 Goes European
South Korean Point Engineering Chooses ClassOne’s Solstice S8 For Advanced Semiconductor Plating
Cadence Announces $5M Endowment To Advance Research
DISCO's Completion Of New Building At Nagano Works Chino Plant
SUSS MicroTec Opens New Production Facility In Taiwan
Will Future Soldiers Be Made Of Semiconductor?
New Plant To Manufacture Graphene Electronics
Changes In The Management Board Of 3D-Micromac AG
Tescan And 3D-Micromac Collaborate To Increase The Efficiency Of Failure Analysis Workflows
AP&S Expands Management At Beginning Of 2021
Can New Advances In CMOS Replace SCMOS Sensors In Biomedical Applications?

Info
×
Search the news archive

To close this popup you can press escape or click the close icon.
Logo
×
Logo
×
Register - Step 1

You may choose to subscribe to the Silicon Semiconductor Magazine, the Silicon Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
X
Info
X
Info
{taasPodcastNotification} Array
Live Event