TFT/LCD: Liquid-Crystal Displays Addressed by Thin-Film Transistors

1996 ◽  
Author(s):  
Yasuzo Tsukada
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Thin Film Transistors ◽  
Liquid Crystal Displays

scholarly journals A Low-Power Memory-in-Pixel Circuit for Liquid Crystal Displays Comprising Low-Temperature Poly-Silicon and Oxide Thin-Film Transistors

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1958
Author(s):  
Jongbin Kim ◽  
Woo-Rim Lee ◽  
Hoon-Ju Chung ◽  
Seung-Woo Lee
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Low Temperature ◽  
Power Consumption ◽  
Low Power ◽  
Thin Film Transistors ◽  
Polycrystalline Silicon ◽  
Liquid Crystal Displays ◽  
Oxide Thin Film ◽  
Measurement Results

In this paper, a new pixel structure using low-temperature polycrystalline silicon and oxide (LTPO) thin-film transistors (TFTs) for low-power liquid crystal displays (LCDs) is proposed. The extremely low off-state current of oxide semiconductor TFTs enables the proposed circuit to operate at a very low frame frequency of 1/60 Hz, so that the power consumption can be significantly reduced. In addition, the low-temperature polycrystalline silicon TFTs with high reliability directly drive pixels, which can achieve stable and flicker-free LCDs. The proposed circuit is fabricated using the LTPO TFT backplane and successfully verified by simulation and measurement results. The measurement results prove that the proposed circuit operates well without further programming for 60 s, and the power consumption in the panel (except backlight power) can be reduced to 0.02% of that of conventional LCD.

Alternative Complex Liquid Crystal Displays

1989 ◽  
Vol 149 ◽  
Author(s):  
E P Raynes
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Amorphous Silicon ◽  
Thin Film Transistors ◽  
Liquid Crystal Displays ◽  
Ferroelectric Liquid Crystals ◽  
Alternative Technologies ◽  
Complex Liquid ◽  
Major Progress

ABSTRACTThe first major progress towards complex LCD's has been made using arrays of thin film transistors (TFT's) fabricated using amorphous silicon (a - Si) technology. However, apart from other two and three terminal devices, there are also two new LCD technologies which directly improve the performance of the LCD without the need for extra switching elements. These are the supertwist (or STN) LCD and displays based on ferroelectric liquid crystals (FELC). These two alternative technologies are described and teir performance compared with that of displays fabricated using α - Si TFT's.

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