Liquid crystal matrix displays

Mobile display technologies: Past developments, present technologies, and future opportunities

“…Originally, Lechner et al proposed the idea of placing a switch device at each pixel in 1969. 4) Brody et al reported the first AM LCD development using CdSe as a semiconductor of TFTs in 1973. 5) This development opened up the bright future of TFT applications for electronic displays.…”

Active-Matrix Liquid Crystal Displays - Operation, Electronics and Analog Circuits Design

“…The impact of this implementation was the reduction of the fabrication cost and the decrease of the transistor size. The second landmark was the Active Matrix addressing method proposed by (Lechner et al, 1971) and the fact that the switch device needed in each pixel of the matrix can be materialized with the use of a TFT device. The period from 1979 to 1981 was revolutionary for the TFT technology.…”

“…As the size, resolution and information content of the displays were increased, the number of the pixels array was, also, increased leading the existing addressing methods to become nonapplicable. A solution to this problem was proposed by Lencher (Lechner et al, 1971) and by Marlone (Marlowe & Nester, 1972). A switch TFT was added at each pixel of the display matrix and in this way the pixels were controlled independently with the use of the external driving voltages.…”

Dual-Gate Organic Thin-Film Transistor and Multiplexer Chips for the Next Generation of Flexible EG-ISFET Sensor Chips

“…The fast advancement of liquid crystal display (LCD) technology in the 1970s presented new opportunities for TFTs. TFTs were best suited to fulfill the LCD industry’s urgent need for a semiconductor switch device that could drive a big-area active matrix (AM) on glass [ 4 ]. As a result of this urge, amorphous silicon (a-Si)-based TFT devices were introduced by Le Comber et al, to be used in AM LCD (AMLCD) in 1979 [ 5 ].…”