Intelligent flexible liquid crystal blackboard capable of realizing one-key erasing and local erasing

Abstract

The invention provides an intelligent flexible liquid crystal blackboard capable of realizing one-key erasing and local erasing. The blackboard comprises a shell, an infrared touch screen and a flexible writable liquid crystal screen of which the shape is matched with the shape of the infrared touch screen, wherein the infrared touch screen comprises a border, a PCB (Printed Circuit Board) control board arranged in the border, and a main control panel arranged on the lower part of the boarder; and the surface of the main control panel is provided with a network state lamp, a work indication lamp, a power-on indication lamp, a battery electric quantity lamp, a saving key, an erase key and a power key and also comprises a main control chip, a power, a boosted circuit unit, a voltage stabilizing circuit unit, a memory, an SD (Secure Digital) card, a wireless transmitting unit, a 74HC595 chip and a bridge type driving circuit unit, wherein the main control chip, the power, the boosted circuit unit, the voltage stabilizing circuit unit, the memory, the SD card, the wireless transmitting unit, the 74HC595 chip and the bridge type driving circuit unit are arranged in the main control panel. The design has the advantages of good use effect, relatively simple structure and principle, convenience in operation, easiness in handling and relatively low energy consumption and is suitable for popularization and use on a large scale.

Description

[0001] [technical field] [0002] The invention relates to the technical field of flexible liquid crystal blackboard products, in particular to an intelligent flexible liquid crystal blackboard with good use effect and high degree of intelligence, which can realize one-key erasing and partial erasing. [0003] [Background technique] [0004] In recent years, with the continuous improvement of people's living standards, products from all walks of life pay more attention to the actual use effect and the degree of people's health protection. In the traditional teaching environment, chalk is generally used to write on the blackboard, and then The way of erasing will produce a lot of powder during actual use. If the user uses it for a long time, it will have a great impact on the health of the user. Based on this, there is currently a liquid crystal handwriting that can replace the traditional blackboard writing mode on the market. The device product, the liquid crystal handwriting ...

AI Technical Summary

Problems solved by technology

[0004] In recent years, with the continuous improvement of people's living standards, products from all walks of life pay more attention to the actual use effect and the degree of people's health protection. In the traditional teaching environment, chalk is generally used to write on the blackboard, and then The way of erasing will produce a lot of powder during actual use. If the user uses it for a long time, it will have a great impact on the health of the user. Based on this, there is currently a liquid crystal handwriting that can replace the traditional blackboard writing mode on the market. Device product, the liquid crystal handwriting device product has a large difference in structure and principle from the traditional blackboard, which can bring good use effects, powerful functions, and easy to use. It is the development direction of future blackboard related products

[0005] However, the current LCD blackboard still has many deficiencies, such as unreasonable structural design, insufficient automation, not conducive to storage, low intelligence, and inability to flexibly realize one-key erasing or partial quick erasing, etc. etc., restricting the wider promotion and use of products

Images