Dot film, multi-layers optic sheet and smart electric board

Abstract

The present invention provides a dot film, a multi-layers optic sheet comprising the dot film, and a smart electric board having the multi-layers optic sheet attached thereto, the dot film comprising: a base layer made of a synthetic resin; a resin layer coated with a resin mixture on the rear surface of the base layer; and a dot layer on which fine dots are formed by printing such that a printing material permeates the resin layer, wherein the dot layer has a plurality of dots formed therewith which are spaced apart from each other at crossing points of virtual grid lines, and has location information encrypted therein so as to determine location information of an electronic pen when writing with the electronic pen. According to the present invention, the optic sheet has a thinned thickness, a minimized possibility of an inflow of particles between layers in the production process, and a low reflectance and scattering rate, and thus has an excellent reactivity and recognition rate for the electronic pen, and UV printing is possible as well as the printing of inkjet and laser printers etc., the production cost thereof is low, and there is an effect of easily permeating and printing printed material.

Description

technical field [0001] The invention relates to a wave point film, a multi-layer optical film and an intelligent electronic blackboard, and relates to a wave point film for an electronic pen on which a wave point pattern with position information can be formed and the position information of the electronic pen can be determined, including the wave point film Multi-layer light film and intelligent electronic blackboard including light film. Background technique [0002] Generally, as long as there is a polka dot pattern anywhere, the electronic pen can recognize the trajectory and take notes. When connected with electronic notebooks, laptops, smart phones, smart TVs and electronic blackboards, handwritten content can be transmitted to the screen in real time It can be confirmed immediately, and the created and edited content can be stored in the internal memory or shared with other users or devices through email, SNS, cloud, etc. Electronic pen recognition includes a method ...

AI Technical Summary

Problems solved by technology

However, the problems in the above-mentioned prior art are that the number of film layers is large, the thickness of the optical film is increased, the reactivity to the electronic pen is low, and the possibility of introducing particles between the layers during the manufacturing process increases. In order to form the wave point pattern, only UV printing requires expensive and large equipment

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