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Limitations and prospects of a‐Si:H TFTs
Author(s) -
Howard Webster E.
Publication year - 1995
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1984952
Subject(s) - thin film transistor , fabrication , computer science , aperture (computer memory) , materials science , sensitivity (control systems) , competition (biology) , voltage , optoelectronics , electrical engineering , electronic engineering , nanotechnology , physics , engineering , medicine , ecology , alternative medicine , pathology , layer (electronics) , acoustics , biology
— Using a simple scaling analysis, we predict the limitations of TFT‐LCDs. HDTVs with 40 in. diagonals and good aperture ratios should be possible, and even larger displays can be made if the aperture ratio is compromised. Although present trilayer a‐Si:H TFTs have problems with voltage errors due to the circuit capacitances, these can be reduced by advanced fabrication techniques, which will be used in future displays. Very large displays may have to use fabrication methods which will reduce the sensitivity to pinholes, but yields for 14–17‐in. workstation displays should be adequate. Displays with integrated drivers will see strong competition from displays with outboard silicon drivers as the cost of the latter comes down; displays with integrated TFT drivers will be confined to niche markets where their size and other advantages compensate for their higher costs.