Optical erasing assembly, writing system and control method thereof

Abstract

The embodiment of the invention provides an optical erasing assembly, a writing system and a control method of the writing system. In the optical erasing assembly provided by the embodiment of the invention, after the first light beam generated by a first light beam generating unit irradiates a to-be-erased area of a liquid crystal writing board, the first light beam can irradiate a thin film transistor located in the to-be-erased area to excite the thin film transistor to generate a driving current; and the driving current drives the liquid crystal in the to-be-erased area to change from the second state to the first state, so that the writing track information displayed in the to-be-erased area is erased, and the local writing track information in the liquid crystal writing board can be erased. The light emitting area and / or the light emitting intensity of the first light beam can be adjusted by arranging the light emitting adjusting unit, so that the accuracy of erasing the writing track information by the first light beam can be improved, the erasing accuracy of the light erasing assembly is further improved, and the applying scene of the light erasing assembly can be expanded.

Description

technical field [0001] The present application relates to the technical field of electronic writing, in particular, the present application relates to an optical erasing component, a writing system and a control method thereof. Background technique [0002] With the development of display technology, more and more display products appear on the market, especially electronic writing display products, such as electronic tablet, the user moves by pressing on the screen, and the screen displays the information that matches the pressing movement track. Handwriting, so it is favored by users. [0003] However, in the current electronic writing display products on the market, if the user needs to correct after pressing and writing, all the handwriting displayed on the screen needs to be erased. Since it cannot be partially erased, the user experience is greatly reduced. Contents of the invention [0004] In view of the shortcomings of the existing methods, the present applicatio...

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Problems solved by technology

[0004] In view of the shortcomings of the existing methods, this application proposes an optical erasing component, a writing system and its control method to solve the technical problem that handwriting cannot be partially erased in electronic writing display products in the prior art

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