Structure for improving brightness of cholesteric liquid crystal handwriting board

Abstract

The invention discloses a structure for improving the brightness of a cholesteric liquid crystal handwriting board. An upper liquid crystal layer and a lower liquid crystal layer with two different attributes are arranged between an upper liquid crystal surface film substrate and a lower liquid crystal surface film substrate, and a middle liquid crystal surface film substrate is arranged between the two liquid crystal layers; the upper liquid crystal layer and the lower liquid crystal layer are opposite in chirality and different in screw pitch, and transparent ITO electrode layers are arranged on the upper liquid crystal layer and the lower liquid crystal layer respectively and connected to the same power source in parallel; and a first circuit control switch and a second circuit controlswitch are arranged on power branches of the upper liquid crystal layer and the lower liquid crystal layer respectively, and a third circuit control switch is arranged on the common branch of the upper liquid crystal layer and the lower liquid crystal layer. By arranging the two liquid crystal layers with the opposite chirality, light with two types of chirality is reflected at the same time, andtherefore, the effect of reflecting double light intensity is achieved, and handwriting brightness is greatly improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a structural design capable of improving the brightness of a cholesteric liquid crystal tablet. Background technique [0002] In traditional technology, people usually record some instant information through blackboards, whiteboards and other appliances. When using such appliances, they need to cooperate with chalk, ink pens and other appliances to complete the writing action. When the handwriting is written on the board, it needs When erasing, it is necessary to erase the corresponding handwriting by means of an eraser class utensil. Although this type of utensil can achieve the effect of repeated writing, it is very inconvenient to use. [0003] Therefore, the liquid crystal tablet that can be erased with one key came into being. However, with the continuous development of science and technology and the continuous improvement of people's living standards, people have used more...

AI Technical Summary

Problems solved by technology

However, due to the single color control of the existing liquid crystal handwriting board, the brightness of the note is not enough, and it cannot fully meet people's functional needs for the liquid crystal handwriting board, which has relatively large application limitations.

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