Amorphous Silicon (a-Si)
a-Si stands for amorphous silicon and transistors made of a-Si are known as a-Si TFT (amorphous-Silicon Thin Film Transistors). a-Si TFT displays have been in manufacturing since last more than 20 Years.
Though a-Si is a low cost material but it's very low electron mobility (around 1cm2/Vs) it can't support high refresh rates like 240Hz and more needed for HD displays. Due to low electron mobility and restrictions for high refresh rates new materials such as Meta-oxide (MO) and LTPS (Low Temperature Polycrystalline Silicon) are replacing a-SI TFT displays.
FAQs:
Question: What is a-SI TFT LCD?
Answer: LCD displays made from a-SI TFTs are called a-SI TFT LCD. a-SI stands for amorphous Silicon, is used as a semiconductor layer in transistor production.
Question: Which is better oxide TFT or a SI TFT LCD?
Answer: Ofcourse Oxide TFT are better because electron mobility in Oxide-TFT is 10-times more than a-SI TFT and hence Oxide-TFT supports higher refresh rates in latest High definition, QHD and 4K (UHD) displays and higher refresh rate displays are mandatory for high end gaming and graphic applications.
