Liquid crystal blackboard capable of achieving partial erasing

A liquid crystal blackboard and local technology, applied in the field of liquid crystal, can solve the problems that the liquid crystal writing board cannot be partially wiped, the writing efficiency of the liquid crystal writing board is low, etc., and achieves the effect of improving work efficiency, use experience, and improving commercial value.

Pending Publication Date: 2019-04-12
SCT OPTRONICS
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a partially erasable liquid crystal blackboard to overcome the defect that the liquid crystal wr

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid crystal blackboard capable of achieving partial erasing
  • Liquid crystal blackboard capable of achieving partial erasing
  • Liquid crystal blackboard capable of achieving partial erasing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 It is a schematic structural diagram of a partially erasable liquid crystal blackboard provided by Embodiment 1 of the present invention. like figure 1 As shown, the LCD blackboard includes:

[0024] The liquid crystal display layer 110 includes a display surface, and the liquid crystal display layer displays corresponding images according to the pressure touch track received by the display surface;

[0025] The identification device 120 is used to identify the projection position and the projection profile of the erasing part on the display surface, and generate a local erasing signal when the projected profile of the erasing part exceeds a preset area;

[0026] Specifically, the identification device may be an infrared sensor, which is arranged around the liquid crystal display screen and identifies the projection position and projection profile of the eraser on the display surface by sending infrared rays. When the projection profile of the eraser exceeds ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a liquid crystal blackboard capable of achieving partial erasing. The liquid crystal blackboard includes a liquid crystal display layer, an identification device, and an erasing circuit, wherein the liquid crystal display layer includes a display surface, and the liquid crystal display layer displays corresponding images according to pressure touch-control tracks received by the display surface; the identification device is used for identifying the projecting position and the projecting outline of an erasing piece on the display surface, and when the projecting outlineof the erasing piece exceeds a preset area, a partial erasing signal is generated; and the erasing circuit is used for erasing the images on the display surface corresponding to the projecting position according to the partial erasing signal. According to the liquid crystal blackboard capable of achieving partial erasing, a partial area of writing content is erased, other areas are not influencedby erasing, the defect that a traditional technology can only achieve entirely erasing is overcome, the work efficiency and using experience of a user are improved, and the commercial value of the liquid crystal blackboard and applied equipment thereof is improved.

Description

technical field [0001] Embodiments of the present invention relate to liquid crystal technology, in particular to a partially erasable liquid crystal blackboard. Background technique [0002] The liquid crystal blackboard of the prior art can only be erased on the whole screen, and cannot be partially erased. After writing a lot of content on the liquid crystal blackboard, if there is a mistake in it, or after writing a formula, it is found that there is a wrong operation symbol in the middle, Just must all erase written content, rewrite just can be corrected, and this causes great inconvenience to the use of liquid crystal blackboard, affects the efficiency of writing. Contents of the invention [0003] The invention provides a partially erasable liquid crystal blackboard to overcome the defect that the liquid crystal writing board in the prior art cannot be partially wiped, resulting in low writing efficiency of the liquid crystal writing board. [0004] An embodiment o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02F1/1333G02F1/133G06F3/041
CPCG02F1/13338G02F1/133G06F3/0416
Inventor 何利民张志城郭腾跃
Owner SCT OPTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap