Semitransparent color cholesteric liquid crystal handwriting device and handwriting system

Abstract

The utility model belongs to the field of liquid crystal handwriting boards, and particularly relates to a semitransparent color cholesteric liquid crystal handwriting device and a handwriting system, and the semitransparent color cholesteric liquid crystal handwriting device comprises a semitransparent color cholesteric phase display board and an erasing assembly, the semitransparent color cholesteric display panel comprises a first conductive film, a semitransparent color cholesteric display film and a second conductive film, the first conductive film comprises a first PET base material, and indium tin oxide is arranged on the side face, facing the semitransparent color cholesteric display film, of the first PET base material. The second conductive film comprises a second PET base material, the side face, facing the semitransparent color cholesteric phase display film, of the second PET base material is provided with indium tin oxide, and the side face, back to the side face provided with the semitransparent color cholesteric phase display film, of the second PET base material is provided with a black code point array containing carbon ink. In the writing process based on the handwriting pen, the code point array cannot be damaged, so that the semitransparent color cholesteric liquid crystal handwriting device has the characteristic of repeated use, and further the use cost is remarkably reduced.

Description

Technical Field

[0001] The utility model belongs to the field of liquid crystal handwriting boards, and in particular relates to a semi-transparent color cholesteric liquid crystal handwriting device and a handwriting system. Background Art

[0002] In order to synchronously record the writing track on the handwriting paper, the existing technology usually prints the code point coordinates on the writing surface of the handwriting paper, and then uses a matching stylus pen. The stylus pen can continuously obtain the code point information at the corresponding position of the pen tip during the writing process, and perform logical processing based on the code point information to obtain the writing track. However, the code points of the current handwriting paper are easily damaged during use, making the handwriting paper inconvenient to reuse, resulting in high cost of use. Utility Model Content

[0003] The utility model aims to provide a semi-transparent color cholesteric liquid crystal handwriting device and a handwriting system to solve the problem of inconvenience in repeated use, which leads to excessively high use costs.

[0004] A semi-transparent color cholesteric liquid crystal handwriting device comprises a semi-transparent color cholesteric display panel and an erasing component, wherein the semi-transparent color cholesteric display panel comprises a first conductive film, a semi-transparent color cholesteric display film and a second conductive film which are stacked in sequence from top to bottom, wherein the first conductive film and the second conductive film are transparent or semi-transparent, wherein the first conductive film comprises a first PET substrate, wherein the side of the first PET substrate facing the semi-transparent color cholesteric display film is provided with indium tin oxide, wherein the second conductive film comprises a second PET substrate, wherein the side of the second PET substrate facing the semi-transparent color cholesteric display film is provided with indium tin oxide, and the side facing away from the semi-transparent color cholesteric display film is provided with a code point array of black carbon-containing ink, wherein the first conductive film and the second conductive film are both electrically connected to the erasing component, and the erasing component can apply an erasing voltage to the semi-transparent color cholesteric display film.

[0005] Optionally, the semi-transparent color cholesteric liquid crystal handwriting device further comprises a code point recognition enhancement structure, wherein an opaque code point recognition enhancement layer made of white material is formed on the lower side of the second conductive film.

[0006] Optionally, the code point recognition enhancement structure is detachably connected to the translucent color cholesteric display panel.

[0007] Optionally, the translucent color cholesteric liquid crystal handwriting device further comprises a writing board structure shell, which wraps around the edges of the translucent color cholesteric phase display panel and is used for installing the erasing component.

[0008] Optionally, the translucent color cholesteric liquid crystal handwriting device further comprises a code point recognition enhancement structure, wherein the code point recognition enhancement structure has a code point recognition enhancement layer made of an opaque white material formed on the lower side of the second conductive film;

[0009] The code point recognition enhancement structure is detachably connected to the writing board structure shell.

[0010] Optionally, the code point recognition enhancement structure further includes a soft rubber protective jacket, and the soft rubber protective jacket is sleeved on the writing board structure shell.

[0011] The utility model also provides a handwriting system, including a handwriting pen and the semi-transparent color cholesteric liquid crystal handwriting device as described above, wherein the handwriting pen can write on the semi-transparent color cholesteric liquid crystal handwriting device, and obtain the code point information at the corresponding position of the pen tip through optical sensing during the writing process, and perform logical processing according to the code point information to obtain the writing trajectory.

[0012] Optionally, the stylus includes a pen tip structure, a pressure sensor, an optical sensing module and a processing unit. The pressure sensor is connected to the pen tip structure and is used to sense whether the pen tip structure is in a writing state. The optical sensing module is used to obtain the code point information passed by the pen tip structure when writing on the translucent color cholesteric liquid crystal handwriting device. The processing unit generates a writing trajectory of the pen tip structure based on the code point information.

[0013] Based on the utility model, when in use, since the first conductive film, the translucent color cholesteric display film, and the second conductive film are all transparent or translucent, the stylus can obtain the code point information at the corresponding position of the pen tip through optical sensing during the writing process, and perform logical processing according to the code point information to obtain the writing trajectory. Among them, since the code point array is arranged on the back of the translucent color cholesteric display panel, the code point array will not be damaged during the writing process of the stylus, so that the translucent color cholesteric liquid crystal handwriting device has the characteristic of repeated use, thereby significantly reducing the cost of use.

[0014] Furthermore, the code point array is arranged on the back of the semi-transparent color cholesteric liquid crystal handwriting device so that it can be printed by a printing process. This design not only simplifies the production process, but also effectively reduces the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is an exploded view of a translucent color cholesteric display panel provided by an embodiment of the utility model;

[0017] Figure 2 is a cross-sectional view of a translucent color cholesteric display panel provided by an embodiment of the utility model;

[0018] Figure 3 It is a bottom view of a translucent color cholesteric display panel provided by an embodiment of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of a stylus provided in an embodiment of the utility model.

[0020] Description of Figure Numbers:

[0021] Label name Label name 110 Semi-transparent color cholesteric display panel 111 The first conductive film 1111 First PET substrate 112 Semi-transparent color cholesteric display film 113 The second conductive film 1131 Second PET substrate 114 Indium Tin Oxide 115 Code Point 120 Code point recognition enhancement structure 200 Stylus 210 Nib structure 220 Optical sensor module DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The embodiment of the utility model provides a handwriting system, including a handwriting pen 200 and a semi-transparent color cholesteric liquid crystal handwriting device.

[0024] Among them, Figures 1 to 3As shown, the semi-transparent color cholesteric liquid crystal handwriting device includes a semi-transparent color cholesteric display panel 110 and an erasing component (not shown in the figure). The semi-transparent color cholesteric display panel 110 includes a first conductive film 111, a semi-transparent color cholesteric display film 112 and a second conductive film 113 stacked in sequence from top to bottom. The first conductive film 111 and the second conductive film 113 are transparent or semi-transparent. The first conductive film 111 includes a first PET substrate 1111. The side of the first PET substrate 1111 facing the semi-transparent color cholesteric display film 112 is provided with indium tin oxide 114 (Indium tin oxide, ITO); in this embodiment, the indium tin oxide 114 is formed on the first PET substrate 1111 by sputtering. The second conductive film 113 includes a second PET substrate 1131, which has an indium tin oxide 114 on the side facing the translucent color cholesteric display film 112, and an array of code points 115 of black carbon ink on the side facing away from the translucent color cholesteric display film 112, that is, the array of code points 115 is arranged on the back of the translucent color cholesteric display panel 110; in this embodiment, the indium tin oxide 114 is formed on the second PET substrate 1131 by sputtering. The first conductive film 111 and the second conductive film 113 are both electrically connected to an erasing component, and the erasing component can apply an erasing voltage to the translucent color cholesteric display film 112.

[0025] like Figure 4 As shown, the stylus 200 can write on the semi-transparent color cholesteric liquid crystal handwriting device, and continuously obtain the code point 115 information at the corresponding position of the pen tip during the writing process, and perform logical processing according to the code point 115 information to obtain the writing trajectory.

[0026] It should be noted here that the translucent color cholesteric liquid crystal handwriting device can be a smaller-sized handwriting board or a larger-sized display board or blackboard; the translucent color of the translucent color cholesteric phase display film 112 refers to a single color, which can be black, red and blue, or different colors can be achieved in different areas; in this embodiment, the code point 115 is rectangular, wherein the size and array relationship of the code point 115 are only schematically shown in the figure, and in other embodiments, the code point 115 can be in other shapes, such as a circle, etc.

[0027] Based on the utility model, when in use, since the first conductive film 111, the translucent color cholesteric display film 112, and the second conductive film 113 are all transparent or translucent, the stylus pen 200 can obtain the code point 115 information at the corresponding position of the pen tip through optical sensing during the writing process, and perform logical processing according to the code point 115 information to obtain the writing trajectory. In addition, since the code point 115 array is arranged on the back of the translucent color cholesteric display panel 110, the code point 115 array will not be damaged during the writing process of the stylus pen 200, so that the translucent color cholesteric liquid crystal handwriting device has the characteristic of repeated use, thereby significantly reducing the cost of use.

[0028] Furthermore, the code point 115 array is arranged on the back of the semi-transparent color cholesteric liquid crystal handwriting device so that it can be printed by a printing process. This design not only simplifies the production process, but also effectively reduces the manufacturing cost.

[0029] In the embodiment of the utility model, the semi-transparent color cholesteric liquid crystal handwriting device further includes a code point recognition enhancement structure 120 . The code point recognition enhancement structure 120 has an opaque code point recognition enhancement layer made of white material formed on the lower side of the second conductive film 113 .

[0030] In actual use, the code point recognition enhancement layer is used as a background layer, and is combined with the black characteristics of the code point 115. Its characteristic of being made of white material effectively enhances the color difference contrast between the two through the optical sensing mechanism during the operation of the stylus 200, which has a significant effect on improving the recognition accuracy and efficiency of the code point 115 by the stylus 200.

[0031] In the embodiment of the utility model, the code point recognition enhancement structure 120 is detachably connected to the translucent color cholesteric display panel 110. Based on the design of detachable connection, the translucent color cholesteric liquid crystal handwriting device has higher flexibility and scalability. Specifically, when the code point recognition enhancement structure 120 is used as a support frame, the code point recognition enhancement structure 120 of different sizes and shapes can be used or replaced, so that the translucent color cholesteric display panel 110 can have different placement angles to meet the needs of different groups of people.

[0032] In other embodiments of the present invention, the semi-transparent color cholesteric liquid crystal handwriting device further comprises a writing board structure shell, which wraps around the edges of the semi-transparent color cholesteric display panel 110 and is provided for the installation of the erasing component. In this way, the edges of the semi-transparent color cholesteric display panel 110 can be prevented from being directly exposed.

[0033] Furthermore, the semi-transparent color cholesteric liquid crystal handwriting device further includes a code point recognition enhancement structure 120, and the code point recognition enhancement structure 120 has an opaque code point recognition enhancement layer made of white material formed on the lower side of the second conductive film 113;

[0034] The code point recognition enhancement structure 120 is detachably connected to the writing board structure shell. Similarly, based on this detachable connection design, the translucent color cholesteric liquid crystal handwriting device has higher flexibility and scalability. Specifically, when the code point recognition enhancement structure 120 is used as a support frame, code point recognition enhancement structures 120 of different sizes and shapes can be used or replaced, so that the translucent color cholesteric phase display panel 110 can have different placement angles to meet the needs of different people.

[0035] Furthermore, the code point recognition enhancement structure 120 also includes a soft rubber protective cover, which is sleeved on the writing board structure shell. In this way, the code point recognition enhancement structure 120 not only has the function of enhancing recognition, but also can be used as a protective cover.

[0036] In the embodiment of the present utility model, Figure 4 As shown, the stylus 200 includes a pen tip structure 210, a pressure sensor, an optical sensing module 220 and a processing unit. The pressure sensor is connected to the pen tip structure 210 and is used to sense whether the pen tip structure 210 is in a writing state. The optical sensing module 220 is used to obtain information about the code points 115 that the pen tip structure 210 passes through when writing on the semi-transparent color cholesteric liquid crystal handwriting device. The processing unit generates a writing track of the pen tip structure 210 according to the code point 115 information. Among them, the pressure sensor facilitates accurate judgment of whether the stylus 200 is writing, avoiding misidentification by the optical sensing module 220.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A translucent color cholesteric liquid crystal handwriting device, characterized in that: The invention comprises a translucent color cholesteric display panel and an erasing component, wherein the translucent color cholesteric display panel comprises a first conductive film, a translucent color cholesteric display film and a second conductive film which are stacked in sequence from top to bottom, wherein the first conductive film and the second conductive film are transparent or translucent, wherein the first conductive film comprises a first PET substrate, wherein the side of the first PET substrate facing the translucent color cholesteric display film is provided with indium tin oxide, wherein the second conductive film comprises a second PET substrate, wherein the side of the second PET substrate facing the translucent color cholesteric display film is provided with indium tin oxide, and the side facing away from the translucent color cholesteric display film is provided with a code point array of black carbon-containing ink, wherein the first conductive film and the second conductive film are both electrically connected to the erasing component, and the erasing component can apply an erasing voltage to the translucent color cholesteric display film.

2. The semi-transparent color cholesteric liquid crystal handwriting device according to claim 1, characterized in that: The semi-transparent color cholesteric liquid crystal handwriting device further comprises a code point recognition enhancement structure, wherein an opaque code point recognition enhancement layer made of white material is formed on the lower side of the second conductive film.

3. The semi-transparent color cholesteric liquid crystal handwriting device according to claim 2, characterized in that: The code point recognition enhancement structure is detachably connected to the translucent color cholesteric display panel.

4. The semi-transparent color cholesteric liquid crystal handwriting device according to claim 1, characterized in that: The semi-transparent color cholesteric liquid crystal handwriting device also includes a writing board structure shell, which wraps around the edges of the semi-transparent color cholesteric phase display panel and is used for installing the erasing component.

5. The semi-transparent color cholesteric liquid crystal handwriting device according to claim 4, characterized in that: The semi-transparent color cholesteric liquid crystal handwriting device further comprises a code point recognition enhancement structure, wherein the code point recognition enhancement structure has an opaque code point recognition enhancement layer made of white material formed on the lower side of the second conductive film; The code point recognition enhancement structure is detachably connected to the writing board structure shell.

6. The semi-transparent color cholesteric liquid crystal handwriting device according to claim 5, characterized in that: The code point recognition enhancement structure also includes a soft rubber protective jacket, and the soft rubber protective jacket is sleeved on the writing board structure shell.

7. A handwriting system, characterized in that: It comprises a stylus and a translucent color cholesteric liquid crystal handwriting device as described in any one of claims 1 to 6, wherein the stylus can write on the translucent color cholesteric liquid crystal handwriting device, and obtains code point information at a corresponding position of the pen tip through optical sensing during the writing process, and performs logical processing based on the code point information to obtain a writing trajectory.

8. The handwriting system according to claim 7, characterized in that: The stylus includes a pen tip structure, a pressure sensor, an optical sensing module and a processing unit. The pressure sensor is connected to the pen tip structure and is used to sense whether the pen tip structure is in a writing state. The optical sensing module is used to obtain the code point information passed by the pen tip structure when writing on the translucent color cholesteric liquid crystal handwriting device. The processing unit generates a writing trajectory of the pen tip structure based on the code point information.

Images