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Writing film structure and projection writing device made of it

A technology of writing device and layer structure, which is applied in the field of projection and writing, can solve problems such as the inability to realize projection display, and achieve the effects of easy promotion and application, improved teaching efficiency, and easy acceptance

Active Publication Date: 2022-01-04
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Abstract
  • Description
  • Claims
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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 made of it
  • Writing film structure and projection writing device made of it

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Effect test

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 with 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 layer structure and a projection writing device made therefrom, which relate to the field of projection and writing technology. In order to solve the existing writing film used for making handwriting boards or liquid crystal blackboards, the background film is mostly black opaque PET. There is a technical problem that related products made of this writing film cannot project projection information onto the display screen. It relates to a writing film layer structure, comprising: a first base layer, a first conductive layer, a liquid crystal layer, a second conductive layer and a second base layer arranged in sequence, and the second base layer is a transparent base material. It also relates to a projection writing device, comprising: the above-mentioned writing film layer structure. The projection writing device made of the writing film layer structure can back project questions and write answers online on a projection screen, which greatly improves office and teaching efficiency.

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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Patent Type & Authority Patents(China)
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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