In a liquid crystal display device of the twisted nematic type comprising upper and lower substrates, upper and lower transparent electrodes formed on the inner surfaces of respective substrates, a liquid crystal interposed between the upper and lower electrodes with its molecules oriented in a twisted arrangement, each of the upper and lower electrodes is constituted by a plurality of electrode segments, and the upper electrode segments are displaced toward lower edge of the display with respec...

A liquid crystal alphanumeric display character is disclosed which includes a central liquid crystal display element. The display character is multiplex-driven and is connected to a plurality of segment lines and a plurality of common lines in a plurality of groups. Provision of the central element allows the segment and common lines to address the display without any of the segment lines having to cross any of the common lines.

A liquid crystal alpha-numeric display of the field effect type comprising a layer of nematic liquid crystal material sandwiched between transparent parallel plates, together with polarizing means on opposite sides of the liquid crystal layer, and a reflector assembly behind the display. The invention is characterized in that the front polarizing means on the side of the liquid crystal layer opposite the reflector assembly covers only spaced segments of transparent conductive material which are ...

A passive electro-optical display cell comprising, on the internal face of each of its plates, at least one of which is transparent, sets of control electrodes and sets of screen electrodes, the control electrodes and the screen electrodes being separated by an insulating layer. The screen electrodes and the insulating layers have apertures therein facing the control electrodes. In order to reduce the number of conducting tracks, the cell is controlled by multiplexing. This type of control is ma...

A liquid crystal display screen having a liquid crystal layer disposed between a pair of carrier plates to form a liquid crystal cell characterized in a plurality of electrode layers disposed between the carrier plates with adjacent electrode layers being separated by an insulating layer and selected electrode layers being in the shape of characters or digits and being energized to form displays of different characters or digits. In one embodiment, a digit electrode layer is applied on opposite ...

A liquid crystal display of the twisted-nematic type in which light numerals or other indicia appear on a darker background. This is achieved with the use of three polarizers, one of which covers only the transparent conductive electrode regions in the display forming a desired image.

A liquid crystal device for direct display of analog information in images and patterns includes a layer of liquid crystal material sandwiched between a front and a back transparent plate. Transparent conducting films are applied to selected portions of the sides of both front and back transparent plates adjacent to the liquid material. A resistor network is provided electrically continuous with at least one of the transparent conducting films for impressing a voltage gradient transversely acros...

A liquid crystal display cell of the reflection type comprises a substrate on which reflection electrodes are formed, a transparent substrate on which transparent electrodes are formed and a liquid crystal composition filled between said two substrates. Activating voltage signals are applied between said two electrodes, thereby to drive the liquid crystal display cell to display desired symbols. A reflection film is formed on at least one of said two substrates in such a manner that the reflecti...

A display for presenting selected images to a viewer, including a transparent substrate; a transparent, electrically conductive coating formed over the transparent substrate; a light modulating layer formed over the transparent, electrically conductive layer; and a patterned conductive layer formed over the light modulating layer which provides viewable and conductive images, the light modulating layer being effective in two conditions, in a first condition to prevent the viewing of the viewable...

A liquid crystal display (LCDS) which has higher contrast characters than previously available LCDs, particularly LCDs used in electronic price labels. The LCD includes a number of characters containing segments including four vertical segments and three horizontal segments arranged in a figure-8 shape. The four vertical segments have a width determined by a segment width to character width ratio of about 0.208-0.283 and the three horizontal segments have a width determined by a segment height t...