Liquid crystal handwriting device

Abstract

The invention discloses a liquid crystal handwriting device which comprises a first base body layer, a first conductive layer, a mixing layer, a second conductive layer, a second base body layer and a substrate, wherein the first base body layer, the first conductive layer, the mixing layer, the second conductive layer, the second base body layer and the substrate are sequentially arranged. The mixing layer comprises a mixture of a cholesterol phase liquid crystal and a macromolecular structure and an optical rotation agent used for controlling the thread pitch of the cholesterol phase liquid crystal. The cholesterol phase liquid crystal is in a first steady state at a power-on moment and is in a second steady state at a pressed moment. When the cholesterol phase liquid crystal is in the first steady state, visible light entering the cholesterol phase liquid crystal in an incident mode is in a white scattered state; when the cholesterol phase liquid crystal is in the second steady state, the visible light entering the cholesterol phase liquid crystal in an incident mode is in a transmitting state, and the visible light sequentially transmits first base body layer, the first conductive layer, the cholesterol phase liquid crystal, the second conductive layer and the second base body layer and enters the substrate in an incident mode. According to the liquid crystal handwriting device, intelligent paper on which words are written without ink is provided and word display reaches the marked effect like the marked effect of black words written on white paper.

Description

technical field [0001] The invention relates to the field of liquid crystal technology, in particular to a liquid crystal handwriting device. Background technique [0002] As we all know, in the field of liquid crystal displays, bistable liquid crystal displays have gradually become mainstream due to their extremely low power consumption. After the bistable display displays the text or image, it can keep the text or image for a long time without the support of energy until it is switched to the next content, so the energy consumed for long-term display is greatly saved. [0003] The liquid crystal in the traditional bistable liquid crystal display usually adopts smectic A phase liquid crystal, and the smectic A phase liquid crystal presents a transmission state to visible light when the liquid crystal is powered on and restored; after the user writes, the liquid crystal at the writing note is opposite Visible light presents a reflective state, thereby realizing writing. Ho...

AI Technical Summary

Problems solved by technology

However, because the liquid crystal display device presents white characters on a black background, it is contrary to the normal writing habits of users (the habit of using col

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