Abstract: A display device for measured values, function, status and trouble indications and the like comprising at least one liquid crystal cell having areas with different coloration of the indications, a light guide extending along at least one of these areas at the back side of the liquid crystal cell for enabling different coloration of the one area and a light source arranged at an end area of the light guide for illuminating the liquid crystal cell.

Abstract: A modular, space-saving vehicle data acquisition and dashboard display system, comprising analog and/or digital sensors (30, 31, 32) connected to a central control logic (14) which is in turn connected over a single digital data line to a plurality of control modules (26) including microprocessors (28) and connected to individual display elements (29) such as liquid-crystal displays. The system includes a travel data read-out (21) which can be interrogated using a keyboard (27).

Abstract: An apparatus for illuminating passive liquid crystal displays is proposed, in which bright display elements appear in negative contrast against a dark background. Masks (21) in the vicinity of the support points (18) of the liquid crystal display (10) are supposed to effectively disappear from the apparent image of the display. To this end, a photoconductor (22) into which light outside the display enters is disposed in front of the liquid crystal display (10), and this photoconductor has surface regions (22a), in the vicinity of the masks (21), which put out a portion of the light toward the front (drawing figure).

Abstract: To provide for optical indication of output values relating to the operating conditions, or other parameters for display on the dashboard of a display panel, for example on automotive vehicles, a display panel (10) has a plurality of indicating blocks (15a . . . 15k) distributed thereover. A logic circuit, for example provided by a micro-processor (12) supplies data over data busses (21, 41) to the respective indicating blocks, which can be connected in series (FIGS. 2, 4) or in parallel (FIGS. 5-7). The logic circuit is connected through suitable connecting lines (13) with sensor inputs, providing ambiant, or operation or operating data. The logic circuit, additionally, generates data of its own, for example time outputs.