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Writing film structure and projection writing device produced by same

A writing device and layer structure technology, applied in the field of projection and writing, can solve problems such as the inability to realize projection display

Active Publication Date: 2018-10-26
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The first object of the present invention is to provide a kind of writing film layer structure, in order to solve the existing writing film that is used to make handwriting board or liquid crystal blackboard, its background film mostly adopts black opaque PET, the related products that use this writing film to make can't realize Technical Problems with Projection Displays

Method used

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  • Writing film structure and projection writing device produced by same
  • Writing film structure and projection writing device produced by same

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Embodiment 1

[0039] Such as figure 1 As shown, the first embodiment provides a writing film layer structure, including: the first base layer 100, the first conductive layer 200, the liquid crystal layer 300, the second conductive layer 400 and the second base layer 500 arranged in sequence, the second The second base layer 500 is a transparent base material.

[0040] In the writing film layer structure, the liquid crystal layer 300 containing liquid crystal such as liquid crystal microdroplets 310 is filled between the first conductive layer 200 and the second conductive layer 400 as the writing substrate, because the material has a reflective state and a scattering state All are stable-state characteristics, so that the user can write freely on the writing film layer; and, since the second matrix layer 500 in the writing film layer is set as a transparent substrate, the setting of the transparent substrate makes the The writing film layer structure presents a transparent or translucent s...

Embodiment 2

[0060] Such as figure 1 and 2 As shown, the present embodiment 2 provides a projection writing device including: a projection module and a display screen, the display screen includes the writing film layer structure in the above embodiment 1; the projection module projects the projection information onto the display screen by means of rear projection .

[0061] The projection writing device is manufactured by using the writing film layer structure in the first embodiment above, wherein the specific structure and beneficial effects of the writing film layer structure have been described in detail in the above text, and will not be repeated here.

[0062] Wherein, an electric control board is provided between the first conductive layer 200 and the second conductive layer 400 to control the power state between the first conductive layer 200 and the second conductive layer 400 .

[0063] Such as figure 2 As shown, the projection module includes a projector and a black curtain ...

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Abstract

The invention provides a writing film structure and a projection writing device produced by the same, relates to the technical field of projection and writing, and aims to solve the technical problemthat the background film of an existing writing film used for producing a handwriting board or a liquid crystal blackboard mostly adopts black and nontransparent PET, and related products produced bythe writing film cannot project projection information to a display screen. The writing film structure comprises a first matrix layer, a first conductive layer, a liquid crystal layer, a second conductive layer and a second matrix layer, wherein the second matrix layer is a transparent base material. The projection writing device comprises the writing film structure. The projection writing devicehas the advantages that question rear projection can be achieved, online answer writing on a projection screen can be achieved, and office and teaching efficiency is increased greatly.

Description

technical field [0001] The invention relates to the technical field of projection and writing, in particular to a writing film layer structure and a projection writing device made thereof. Background technique [0002] In recent years, various types of liquid crystal handwriting boards, electronic liquid crystal film blackboards and other products have appeared on the market. These products use liquid crystal materials as display substrates, and users can write freely on these products. [0003] However, such handwriting boards or liquid crystal blackboards cannot project information (for example, graphic information: test questions, questions, etc.) Quickly project to the display screen. Therefore, this type of product can only replace the chalk blackboard, but cannot realize the projection function, and its teaching efficiency is relatively low; in addition, if this type of product can only replace the traditional chalk blackboard for writing, the cost of using this type ...

Claims

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Application Information

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IPC IPC(8): G02F1/13G02F1/1333G03B21/60G06F3/041
CPCG02F1/1313G02F1/1333G02F1/13338G03B21/60G06F3/0412
Inventor 李玉龚德斌彭娟杨茂义
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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