An active matrix array for liquid crystal displays which provides for a large aperture ratio. A layer of single crystal silicon is disposed over a glass substrate and etched and doped to form multiple source and drain regions for an array of thin film transistors (TFTs). Multiple gate buses are laid across the source and drain regions to form the TFTs. The drain regions each electrically contact a transparent electrode used in switching an individual pixel in a liquid crystal display. The TFTs formed do not encroach significantly into the pixel aperture and the conduction lines are constructed at minimal photolithographical requirements.
A multiplex control active matrix display screen including a first transparent substrate supporting an array of electrodes controlled by an array of transistors. Each transistor has two control gates. The second gates are interconnected along an addressing row or column. The rows and columns are interconnected in groups of N. The transistors of a column or row are then controlled by multiplexed three control signals.
Projections are formed of a layer at locations at which no conductive pattern such as a signal line formed of another layer is provided, a scanning line and an storage capacitor line can be prevented from being short-circuited via the portion of an insulating film damaged by discharge of static electricity.
A liquid crystal display which comprises an active matrix circuit board equipped with a plurality of transistors having a plurality of pixel electrodes arranged along a plurality of lines and rows and drains connected to these pixel electrodes, scanning lines for commonly connecting gates of the transistors arranged along the lines, and signal lines for commonly connecting sources of the transistors arranged along the rows, a substrate having a facing electrode, and a liquid crystal interposed between the active matrix circuit board and the substrate the liquid crystal display being constituted so that a voltage may be applied to regions of a conductive mode which is different from a conductive mode of the sources and the drains of semiconductor layers constituting the transistors.
A process of fabricating a liquid crystal electro-optical (display) device. The device includes discharge accelerating patterns extending from associated gate bus patterns and provided with a unique geometry. The disclosed geometry minimizes the dielectric breakdown of a gate insulating film attributable to plasma discharge between gate and source/drain electrodes of the associated thin film transistors.
An electro-optical device includes, above a substrate: data lines extending in a first direction; scanning lines extending in a second direction and intersecting the data lines; pixel electrodes and thin film transistors disposed so as to correspond to intersection regions of the data lines and the scanning lines; storage capacitors electrically connected to the thin film transistors and the pixel electrodes; and shielding layers disposed between the data lines and the pixel electrodes. Further, nitride films are included in the shielding layers and are formed along the data lines and are wider than the data lines.
