Digital display device comprising two display units arranged on top of each other and timepiece comprising such display device

Abstract

The invention relates to a digital display device 1 including, from top to bottom, a first red filter 8, a transflective liquid crystal display cell 2, a second red filter 18 and an emissive display cell 6, the transflective liquid crystal display cell 2 displaying information using at least one first seven-segment digit and the emissive display cell 6 providing a plurality of juxtaposed light points which are arranged so as to provide a display formed by at least one second seven-segment digit.

Description

technical field [0001] The invention relates to a digital display device comprising two display units superimposed. More specifically, the present invention relates to a digital display device comprising a combination of a transflective liquid crystal display unit and an emissive display unit. The invention also relates to a timepiece, in particular a wristwatch, equipped with a digital display device of the above-mentioned type. [0002] technical background [0003] The purpose of the present invention is to satisfy some nostalgic customers in particular by providing them with an electronic watch produced according to current standards but having the visual appearance of the first electronic watches that appeared on the market in the early 1970s. The demand for electronic watches. [0004] The first electronic watches used a digital display, the segments of which were formed by light-emitting diodes, or LEDs. These digital displays are emissive and consume too much power...

AI Technical Summary

Problems solved by technology

This solution is expensive due to the silicon surface used and is no longer commercially available today

Also, using commercially available LEDs these days is also complicated by the fact that the packages of these small LEDs are so large that the light points formed by these LEDs are not as close to each other as the original watch.

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