A new display technology uses a bi-stable pixel, which maintains its state indefinitely without the need for individual transistor elements at each pixel.
The signal is divided into a row or select signal and a column or video signal. The select voltage determines the row that is being addressed and all m pixels on a row are addressed simultaneously. When pixels on a row are being addressed, a Vsel potential is applied, and all other rows are unselected with a Vunsel potential. The video signal or column potential is then applied with a potential for each m columns individually. An on-lighted pixel corresponds to a Von, an off-switched corresponds to a Voff potential.
The potential across pixel at selected row i and column j is
Passive matrix addressed displays such as ferroelectric Liquid crystal display do not need the switch-component of an active matrix display because it has a built-in bistability. Technology for electronic papers also have a form of bistability. Displays with bistable pixel elements are addressed with passive matrix addressing scheme, where as TFT-LCD-displays are addressed using active addressing.
Screen technology revolution on horizon. (active-addressing passive-matrix liquid crystal display color screens rival active-matrix displays) (Trends & Technology) (Brief Article)
Jun 01, 1992; There are rumblings in the ranks of the display industry as In Focus Systems, of Beaverton, Ore., prepares to unveil its new...
High-resolution panels target laptop computers: liquid crystal displays. (includes glossary of terms and list of vendors discussed in the article)(EDN-Technology Update)
Apr 23, 1992; As the demand for elegant, high-performance displays increases, manufacturers are improving existing technologies and devising...