Thin Film Transistors a-Si Based
sedLOGIC DESIGN
THIN FILM TRANSISTORS
(AMORPHOUS MATERIAL BASED)
PALLAVI S.
1RV11IT030
CONTENTS
INTRODUCTION
EARLY DEVELOPMENTS
WHAT IS A THIN FILM TRANSISTOR?
MATERIALS USED FOR TFT CONSTRUCTION
AMORPHOUS SILICON BASED TFT * CONSTRUCTION * WORKING * DEVICE MODELLING
APPLICATIONS
* TFT IN LIQUID CRYSTAL DISPLAY
FUTURE APPLICATIONS
PAPERS AND ARTICLES PUBLISHED OVER THE YEARS..
CONCLUSION
REFERENCES
INTRODUCTION
Over the past 10 years, thin film transistors (TFTs) have become critical to the growth and development of the electronic flat panel industry. Today, flat panels have become a part of everyday life. From LCD televisions to calculator displays, from mobile phones and touch sensitive displays to signboards, TFTs are omnipresent. Hence, understanding the behavior, working and construction of TFTs also becomes essential.
Various reports, papers and articles that have been published over the years are crucial to this report and have been mentioned. This report covers the history and basics of thin film transistors, along with their construction of amorphous material based TFT, working and present applications. The future implications of TFTs have also been discussed.
EARLY DEVELOPMENTS
The history of thin film transistors dates back to the 1930s, when Lilienfeld invented the most primitive form of a field effect device. Though, this model was soon discarded due to incorrect claims in the patent.
Holger Heil, in his 1935 patent, presented more solid claims and correctly explained the behavior and structure of a field effect device. His claims displayed a knowledge of p type semicondutors, which were unknown till then. Later on, in 1939, Shockley developed a device based of the Schottky diode, i.e., metal-semiconductor contact. This is what we know today as the MESFET.
In the 1940s, Shockley tried a new approach focusing on simplicity of elemental semiconductors. He attempted to develop a field effect device
THIN FILM TRANSISTORS
(AMORPHOUS MATERIAL BASED)
PALLAVI S.
1RV11IT030
CONTENTS
INTRODUCTION
EARLY DEVELOPMENTS
WHAT IS A THIN FILM TRANSISTOR?
MATERIALS USED FOR TFT CONSTRUCTION
AMORPHOUS SILICON BASED TFT * CONSTRUCTION * WORKING * DEVICE MODELLING
APPLICATIONS
* TFT IN LIQUID CRYSTAL DISPLAY
FUTURE APPLICATIONS
PAPERS AND ARTICLES PUBLISHED OVER THE YEARS..
CONCLUSION
REFERENCES
INTRODUCTION
Over the past 10 years, thin film transistors (TFTs) have become critical to the growth and development of the electronic flat panel industry. Today, flat panels have become a part of everyday life. From LCD televisions to calculator displays, from mobile phones and touch sensitive displays to signboards, TFTs are omnipresent. Hence, understanding the behavior, working and construction of TFTs also becomes essential.
Various reports, papers and articles that have been published over the years are crucial to this report and have been mentioned. This report covers the history and basics of thin film transistors, along with their construction of amorphous material based TFT, working and present applications. The future implications of TFTs have also been discussed.
EARLY DEVELOPMENTS
The history of thin film transistors dates back to the 1930s, when Lilienfeld invented the most primitive form of a field effect device. Though, this model was soon discarded due to incorrect claims in the patent.
Holger Heil, in his 1935 patent, presented more solid claims and correctly explained the behavior and structure of a field effect device. His claims displayed a knowledge of p type semicondutors, which were unknown till then. Later on, in 1939, Shockley developed a device based of the Schottky diode, i.e., metal-semiconductor contact. This is what we know today as the MESFET.
In the 1940s, Shockley tried a new approach focusing on simplicity of elemental semiconductors. He attempted to develop a field effect device