Erasable liquid crystal handwriting device and erasing method

A liquid crystal handwriting and equipment technology, which is applied in the fields of instruments, computing, and electrical digital data processing, etc., can solve the problem that the liquid crystal handwriting board cannot be partially erased, and achieve the effect of promoting application and good user experience

Pending Publication Date: 2022-04-15
江苏纳美达光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an erasable liquid crystal handwriting

Method used

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  • Erasable liquid crystal handwriting device and erasing method
  • Erasable liquid crystal handwriting device and erasing method
  • Erasable liquid crystal handwriting device and erasing method

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[0030] In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly co...

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Abstract

The invention discloses an erasable liquid crystal handwriting device and an erasing method. The handwriting board comprises a handwriting screen, a signal receiver, a memory, an image decoder, a controller and an erasure driving circuit, the handwriting screen comprises a liquid crystal handwriting module and an OID coding layer arranged on the liquid crystal handwriting module, the liquid crystal handwriting module comprises a plurality of conductive areas, each conductive area corresponds to at least one OID code on the OID coding layer, and the OID coding layer is connected with the controller. The memory is used for storing the corresponding relation between the OID codes and the conductive areas, the erasure driving circuit is connected with each conductive area, the controller is connected with the erasure driving circuit and the image decoder, and the image decoder is connected with the memory and the signal receiver; the handwriting pen comprises a sensor and a signal transmitter, the sensor is connected with the signal transmitter, and the signal transmitter is in signal connection with the signal receiver. The sensor collects OID code information according to the action of the handwriting pen, the handwriting board erases patterns and characters in the conductive area corresponding to the OID code information, and the local erasing function is achieved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal handwriting boards, in particular to an erasable liquid crystal handwriting device and an erasing method. Background technique [0002] The electronic liquid crystal handwriting panel utilizes the characteristics of the bistable liquid crystal, and in the case of no external electric field, it shows bright state or dark state respectively. It can display information without backlight and polarizer, so it is more energy-saving. The electronic LCD handwriting board can be written with the built-in stylus or hard objects, and the user experience and drawing effect are excellent. When the user needs to erase the content on the handwriting board, a voltage is applied to the handwriting board, and the liquid crystal molecules in the handwriting board are deflected under the action of the electric field and return to an orderly state, thereby eliminating the handwriting on the handwriting board. ...

Claims

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Application Information

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IPC IPC(8): G06F3/041G02F1/133G02F1/1333
Inventor 刘腾蛟胡源范江峰
Owner 江苏纳美达光电科技有限公司
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