About the Practice
Problem Statement:

Development of Organic thin film transistors. http://gyti.techpedia.in/files/GYTI-BOOK-color.pdf

Detail:

Organic thin film transistors (OTFTs) have been envisaged as a promising technology for their unique qualities such as flexibility, light-weight and low-cost fabrication. Its potential applications include flexible displays, smart cards, RFID tags, electronic paper and other consumer electronics. Different techniques such as inkjet, flexographic, gravure, offset and screen printing are used to manufacture OTFTs currently. Here a novel technique based on a drop-cast/ inkjet process is proposed, which uses only 3 drops (distinct liquid in each drop), dispensed (and printed) in succession to manufacture OTFTs. An organic semiconductor when mixed with certain solvents tends to form a coffee ring like structure. When a water soluble conductor ink is dropped over the hydrophobic semiconductor, some part of it gets trapped inside the well (ring) and the rest forms a ring just outside the well, which later can be used as source and drain contacts.


About the Innovator

Knowledge Provider / Innovator: Gunda Manideep, Ankit Nagar, Mridul Boro and Saumen Mandal
Address: National Institute of Technology
City: Surathkal
State: Karnataka
PIN Code 575025
Email: saumenmandal@gmail.com
Contact No: 7899493903.0

Practice Details

Link:  Flexible display is the most suitable application for OTFTs.  Arrays of OTFTs can be used as a backplane in active 128 × 128 matrix electrophoretic (e-paper) displays with a pixel size of 340 μm.  This was demonstrated with an inkjet of regioregular polythiophene, poly [5,5′-bis(3-dodecyl-2-thienyl)-2,2′-bithiophene] (PQT-12) to form the active layer. https://iopscience.iop.org/article/10.1088/0268-1242/30/6/064003/meta
Manufacturing Capacity: a) Turnkey solution
Problem Scale: 1) India 2) Around the world
Blog Link 5:

News Link 5:


GIAN Reference: GIAN/UAL/1345
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