Zero-power-consumption liquid crystal display electricity meter

Abstract

The invention belongs to the technical field of electricity metering equipment and relates to a zero-power-consumption liquid crystal display electricity meter. The zero-power-consumption liquid crystal display electricity meter mainly comprises an electricity meter box, a battery, a liquid crystal driving chip and a liquid crystal display panel. Besides the basic structural elements of an existing conventional electricity meter, the battery, the liquid crystal driving chip and the liquid crystal display panel are arranged inside the electricity meter box, and the battery is in electrical information connection with the liquid crystal driving chip and the liquid crystal display panel and then in electrical principle matched connection with an ordinary electricity meter. The reflection mode of the cholesteric liquid crystal display technique is adopted, backlight is not needed, the liquid crystal driving chip can drive the cholesteric liquid crystal display technique, the view-angle-free fine bistable display function is realized, the influence of intense solar radiation is avoided, normal display of electricity data can still be achieved under the conditions of power failure, power down, outage and battery failure, the contrast ratio is high, and power is consumed only when screen refreshing is conducted to display electricity data; the zero-power-consumption liquid crystal display electricity meter is simple in structure, reliable in principle, stable in performance, capable of saving energy and protecting the environment, long in service life, and environment friendly in application.

Description

Technical field: [0001] The invention belongs to the technical field of power metering equipment, and relates to a zero-power liquid crystal display electric meter, which realizes long-term liquid crystal display of electricity consumption data when the electric meter has no battery or power failure based on cholesterol liquid crystal display technology, and is especially suitable for meter reading occasions in a power failure state . Background technique: [0002] Cholesterol liquid crystal is a special liquid crystal mode arranged in a helical shape. It is a kind of organic material display technology. This technology can adjust red, green, blue and other colors by adding optical rotators with different rotation pitches to meet the requirements of color display. Cholesterol liquid crystal is one of the main technologies used in e-book displays. Because it is similar to electrophoretic technology, it has the characteristics of bistable display. When the picture is still ch...

AI Technical Summary

Problems solved by technology

The liquid crystal display of the ammeter in the prior art needs to be powered by a battery or powered on to display the electricity consumption data for a long time. When the battery is dead, the ammeter is powered off or the power is cut off, the liquid crystal of the ammeter will not be displayed, and the liquid crystal display of the ammeter cannot be obtained in real time. content, causing abnormal meter reading work

At present, there is no record in the relevant literature and reports that the application of cholesteric liquid crystal display technology in the field of electric meter liquid crystal display

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