Cholesteric liquid crystal writing screen for realizing local erasing by utilizing infrared touch technology

Abstract

The invention discloses a cholesteric liquid crystal writing screen for realizing local erasure by utilizing an infrared touch technology. A first single-sided conductive layer comprises a plurality of first conductive layer parts which are insulated from one another; a second single-sided conducting layer comprises a plurality of second conducting layer parts which are insulated from one another,the second single-sided conducting layer and the first conducting layer are arranged in a partly crossed manner, at least one part of the first conducting layer coincides with at least one part of the second conducting layer, and the cholesteric liquid crystal layer is arranged between the first conducting layer parts and the second conducting layer parts in a stacked manner; each of the first conductive layer portions and each of the second conductive layer portions may be electrically connected with a voltage applying device. The invention provides a cholesteric liquid crystal writing screen capable of realizing local erasing by utilizing an infrared touch technology. The technical problem of low writing efficiency of the liquid crystal writing board due to the fact that the liquid crystal writing board in the prior art cannot realize local erasing is solved, local erasing can be realized, the erasing speed is high, erasing and writing are carried out at the same time, the timeliness is good, the practicability of the liquid crystal writing screen is enhanced, and the writing efficiency and the use experience are improved.

Description

technical field [0001] The invention relates to the field of liquid crystal writing technology, in particular to a cholesteric phase liquid crystal writing screen which utilizes infrared touch technology to realize partial erasing. Background technique [0002] The working principle of the liquid crystal writing film currently on the market is to use the bistable characteristics of liquid crystals to display and / or erase the written content on the liquid crystal writing board. For example, using cholesteric liquid crystal as a writing film, the writing pressure track of the writing pen is recorded by the pressure acting on the liquid crystal writing board, and then the corresponding writing content is displayed; the structure of the cholesteric liquid crystal is changed by applying an electric field, so that the liquid crystal The writing pressure track on the tablet disappears to enable erasing. [0003] Existing products using liquid crystal writing film can only erase al...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a cholesteric liquid crystal writing screen that uses infrared touch technology to realize partial erasing, which solves the problem that the liquid crystal writing board in the prior art cannot realize partial erasing, which causes the writing efficiency of the liquid crystal writing board. Low technical problems, local erasing can be realized, erasing speed is fast, erasing and writing, good timeliness, enhancing the practicality of the LCD writing screen, improving writing efficiency and user experience

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