Polymer dispersed liquid crystal thermal-sensitive dimming temperature card and manufacturing method thereof

Abstract

The invention relates to a polymer dispersed liquid crystal thermal-sensitive dimming temperature card and a manufacturing method thereof. The temperature card is formed by clamping a plurality of polymer dispersed liquid crystal film sheets in sequential arrangement and a transparent plastic sheet with a temperature scale value by two transparent films; and liquid crystals in the polymer dispersed liquid crystal film sheets arranged in sequence have different clear point temperatures and are arranged according to the size of the clear point temperature values. The temperature card has the same function as the existing cholesteric liquid crystal thermochromism display temperature card, but has different appearance visual effects; the temperature range can be large and small, the manufacturing method is simple, and the cost is low; the temperature card can be used as temperature indicating cards (such as for water temperature display in a vacuum cup and the like) as a non-electronic andportable application, and the temperature card can be embedded into an electric kettle and the like to display the temperature, but is not related to electronic circuits..

Description

technical field [0001] The invention belongs to the technical field of manufacturing liquid crystal temperature cards, in particular to a polymer-dispersed liquid crystal thermosensitive dimming temperature card and a manufacturing method thereof. Background technique [0002] The body temperature card manufactured by the thermochromic effect of cholesteric liquid crystal is an example of a small product applied to liquid crystal non-electronic display devices that has been commercialized for many years. This kind of body temperature card is made of plastic film, with a series of small black blocks on it, and there is cholesteric liquid crystal in each block. When the temperature card is in the display range of the ambient temperature, the corresponding block will change from Black becomes colored (such as monochrome such as dark orange, dark yellow, dark green, dark blue) and shows temperature scale black font, and prior art cholesteric phase liquid crystal itself has Bragg...

AI Technical Summary

Problems solved by technology

On some household appliances (such as thermos cups, electric kettles, etc.), people also want to have temperature display, but the existing temperature display is basically electronic temperature sensor technology, and non-electronic traditional alcohol thermometers or mercury thermometers are not suitable for loading On items such as thermos cups or electric kettles

Images