초록 ▼

A multi-layer display device including at least two liquid crystal display cells overlapping along a line of sight is provided. Adjacent display cell layers may share a common transparent plate therebetween. Patterns are displayed by selectively applying a voltage between opposed pattern and common

A multi-layer display device including at least two liquid crystal display cells overlapping along a line of sight is provided. Adjacent display cell layers may share a common transparent plate therebetween. Patterns are displayed by selectively applying a voltage between opposed pattern and common electrodes. The number of signal wires removed from the device is reduced by electrically connecting electrodes in different layers. The connected electrodes may be non-overlapping to increase the number of characters which may be displayed simultaneously, or may be overlapping for independent displays.

대표청구항 ▼

A multi-layer liquid crystal display device comprising at least two liquid crystal display cells overlapping in plan view, each said display cell for selectively displaying a display of at least one character with the display in each cell at least in part overlapping along a line of sight, and each

A multi-layer liquid crystal display device comprising at least two liquid crystal display cells overlapping in plan view, each said display cell for selectively displaying a display of at least one character with the display in each cell at least in part overlapping along a line of sight, and each cell including two opposed transparent panels in spaced relation formed with segmented pattern transparent electrode means deposited on the interior surface of one of said panels for forming said display and at least one common electrode means on the opposed panel opposite at least a portion of said segmented pattern electrode means and a liquid crystal material in the space between said panels adapted to have regions thereof rendered visually distinguishable from the remainder of said material when a predetermined voltage is selectively applied across the opposed regions of pattern and common electrode means, portions of the segmented pattern electrode means of one of said layers being electrically connected to portions of the segmented pattern electrode means in another of said layers with said connection outside the space between said panels, the common electrode means in each cell formed independently and not electrically connected with each other and multiplexed driving circuit means for generating segment signals for application to said segmented pattern electrode means and common signals for application to each said common electrode means, said segment and common signals for selectively energizing at least a portion of said electrode means for displaying at least one of said characters, and at least one of said common signals being an OFF signal when applied to a common electrode means to prevent the portion of the display associated with said common electrode means from being placed in an ON condition regardless of the segment signal applied to the opposed segmented electrode means.