Electrochromic handwriting board
By using an inert gas layer to isolate the electrochromic active layer, the design of the electrochromic writing tablet achieves low-power, multi-color display, solving the problems of traditional writing tablets requiring continuous power supply and specific pens, and providing a low-cost, visually friendly writing experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional handwriting tablets require continuous power, resulting in high operating costs. They also require specific pens for signal input and offer a poor visual experience.
Employing electrochromic technology, an inert gas layer isolates the electrochromic active layer from the conductive substrate. Signal input is achieved by pressing, and the electrochromic layer achieves multi-color display by relying on the color-changing properties of the material. It has a low driving voltage and supports writing with fingers or any pen-like object.
It achieves low power consumption, colorful display, visual experience close to natural paper, supports backlight-free display, reduces usage cost and power consumption, and supports writing with fingers or any pen-like object.
Smart Images
Figure CN224005487U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrochromic technology, specifically to an electrochromic handwriting tablet. Background Technology
[0002] Traditional electromagnetic or capacitive writing tablets are common devices used for writing and display. They typically require an electromagnetic pen or capacitive pen for signal input, and a continuous power supply is needed to maintain the display, resulting in high overall operating costs. Electrochromic display technology, on the other hand, can achieve multi-color display without backlighting, providing a visual experience closer to natural paper and suitable for extended use. Furthermore, electrochromic display technology can achieve stable display even when power is off, resulting in low power consumption costs. Summary of the Invention
[0003] To address the above technical problems, the purpose of this utility model is to provide a low-power, multi-color display, and eye-friendly electrochromic handwriting tablet, where the writing input device can be a pen-like object of any material.
[0004] To achieve the above objectives, the technical solution of this utility model is: an electrochromic handwriting tablet, comprising a shell, an electrochromic component, and a power supply component. The electrochromic component is embedded in the shell, and the power supply component controls the electrochromic component. The electrochromic component comprises a bottom rigid conductive substrate, an electrochromic active layer, an inert gas layer, and a top flexible conductive substrate arranged in parallel, and the bottom rigid conductive substrate, the electrochromic active layer, the inert gas layer, and the top flexible conductive substrate are fixedly connected from bottom to top.
[0005] In a preferred embodiment, the bottom rigid conductive substrate includes a bottom rigid conductive substrate base layer and a bottom rigid conductive substrate transparent conductive layer. One side of the bottom rigid conductive substrate transparent conductive layer is fixedly connected to the bottom rigid conductive substrate base layer, and the other side is fixedly connected to the electrochromic active layer.
[0006] In a further technical solution, the top flexible conductive substrate includes a top flexible conductive substrate base layer and a top flexible conductive substrate transparent conductive layer. One side of the top flexible conductive substrate transparent conductive layer is fixedly connected to the inert gas layer, and the other side is fixedly connected to the flexible conductive substrate base layer.
[0007] In a further technical solution, the electrochromic active layer and the inert gas layer have the same cross-sectional size. A sealant is fixedly disposed around the perimeter of the electrochromic active layer. The sealant fixes the bottom rigid conductive substrate and the top flexible conductive substrate together, and the sealant forms a sealed inert gas layer in the gap between the electrochromic active layer and the top flexible conductive substrate.
[0008] In the above technical solution, the inert gas layer isolates the electrochromic layer from the top flexible conductive substrate, preventing direct contact. When energized, the top flexible conductive substrate must be pressed beyond the thickness of the inert gas layer to allow contact and conductivity between the top flexible conductive substrate and the electrochromic layer, enabling the device to operate. When not energized, the inert gas layer also maintains the chemical stability of the electrochromic layer.
[0009] In the above technical solution, the electrochromic active layer is fixedly connected to the bottom rigid conductive substrate and the top flexible conductive substrate through sealant.
[0010] In a preferred embodiment, the thickness of the inert gas layer is 10-3000 μm.
[0011] In a preferred embodiment, the cross-sectional area of the electrochromic active layer is smaller than that of the bottom rigid conductive substrate and the top flexible conductive substrate; conductive silver paste is disposed on the edges of the bottom rigid conductive substrate and the top flexible conductive substrate.
[0012] In a further technical solution, the outer shell is provided with an opening, the bottom rigid conductive substrate, the electrochromic active layer, and the inert gas layer are disposed inside the outer shell, and the top flexible conductive substrate is partially disposed within the opening.
[0013] In a further technical solution, the opening area is less than or equal to the cross-sectional area of the electrochromic active layer.
[0014] In a further technical solution, the power supply component includes a power module and a power control module; lead-out electrodes are fixedly disposed on the conductive silver paste; the power control module is connected to the lead-out electrodes and the power module.
[0015] In the above technical solution, the two lead-out electrodes are located on both sides of the electrochromic active layer.
[0016] In a further technical solution, a control switch is provided on the housing, and the control switch is connected to the power control module.
[0017] In the above technical solution, the control switch is used to control the electrochromic element to conduct in the forward direction with the power supply and to conduct in the reverse direction when the positive and negative terminals are reversed.
[0018] The working principle of this invention is as follows: When the circuit is forward-conducting, a finger or pen-like object can be used to directly press lightly onto the surface of the top flexible conductive substrate, exceeding the thickness of the inert gas layer. This causes the top flexible conductive substrate to contact the electrochromic active layer, thereby achieving a localized color change. While pressed, sliding the substrate allows for writing text or drawing patterns. When the positive and negative terminals are reversed, lightly pressing the top flexible conductive substrate into the electrochromic active layer causes fading, erasing the content.
[0019] The advantages of this utility model are:
[0020] 1. This utility model is a non-light-emitting device, and it also does not have the problem of flickering, making it eye-friendly;
[0021] 2. The color of this utility model depends on the color-changing properties of the electrochromic material, and the color is highly adjustable, enabling multi-color display;
[0022] 3. This utility model features low driving voltage and low energy consumption;
[0023] 4. This utility model does not require an electromagnetic pen or capacitive pen; writing can be done with a finger or any pen-like object, making it more convenient to use. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0026] Figure 1 This is a schematic diagram of the structure of this utility model;
[0027] Figure 2 for Figure 1 Sectional view at point AA.
[0028] The components include: 1. Outer shell; 2. Bottom rigid conductive substrate base layer; 3. Bottom rigid conductive substrate transparent conductive layer; 4. Electrochromic active layer; 5. Inert gas layer; 6. Flexible conductive substrate base layer; 7. Flexible conductive substrate transparent conductive layer; 8. Conductive silver paste; 9. Sealant; 10. Electrochromic component; 11. Control switch. Detailed Implementation
[0029] Example 1: As Figure 1 , 2 As shown, an electrochromic writing tablet includes a shell 1, an electrochromic component, and a power supply component. The electrochromic component is embedded in the shell 1. The power supply component controls the electrochromic component. The electrochromic component is fixedly connected from bottom to top, consisting of a bottom rigid conductive substrate, an electrochromic active layer 4, an inert gas layer 5, and a top flexible conductive substrate arranged in parallel.
[0030] The electrochromic active layer 4 includes an electrochromic material, an electrolyte material, and a counter electrode material.
[0031] The electrochromic active layer 4 is a single, integral unit.
[0032] The atmosphere of the inert gas layer 5 consists of one of N2, He, Ne, Ar, Kr, Xe, and Rn.
[0033] The bottom rigid conductive substrate includes a bottom rigid conductive substrate base layer 2 and a bottom rigid conductive substrate transparent conductive layer 3. One side of the bottom rigid conductive substrate transparent conductive layer 3 is fixedly connected to the bottom rigid conductive substrate base layer 2, and the other side is fixedly connected to the electrochromic active layer 4.
[0034] The bottom rigid conductive substrate 2 can be one of glass, polymer, or a composite material of polymer and glass, wherein the polymer material can be independently selected from polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polymethyl methacrylate (PMMA), or polyimide (PI).
[0035] The top flexible conductive substrate includes a top flexible conductive substrate base layer 6 and a top flexible conductive substrate transparent conductive layer 7. One side of the top flexible conductive substrate transparent conductive layer 7 is fixedly connected to the inert gas layer 5, and the other side is fixedly connected to the flexible conductive substrate base layer 6.
[0036] The top flexible conductive substrate base layer 6 is made of polymer material, which can be independently selected from polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polymethyl methacrylate (PMMA), and polyimide (PI).
[0037] The materials for the bottom rigid conductive substrate transparent conductive layer 3 and the top flexible conductive substrate transparent conductive layer 7 can be selected from one of the following: indium-doped tin oxide (ITO), fluorine-doped tin oxide (FTO), aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO), Ag, Au, Cu, Ni, Pt, Pd, Au, Cr, Zn, Ti, Pb, Ru, and Rh.
[0038] The electrochromic active layer 4 and the inert gas layer 5 have the same cross-sectional size. A sealant 9 is fixedly provided around the perimeter of the electrochromic active layer 4. The sealant 9 forms a sealed inert gas layer 5 between the electrochromic active layer 4 and the top flexible conductive substrate.
[0039] The cross-sectional area of the electrochromic active layer 4 is smaller than that of the bottom rigid conductive substrate and the top flexible conductive substrate; conductive silver paste 8 is provided on the edges of the bottom rigid conductive substrate and the top flexible conductive substrate.
[0040] An opening is provided on the outer casing 1. The bottom rigid conductive substrate, the electrochromic active layer 4, and the inert gas layer 5 are disposed inside the outer casing 1, and the top flexible conductive substrate is disposed inside the opening.
[0041] The opening area is less than or equal to the cross-sectional area of the electrochromic active layer 4.
[0042] The power supply assembly includes a power module and a power control module; lead-out electrodes are fixedly mounted on the conductive silver paste 8; the power control module is connected to the lead-out electrodes and the power module.
[0043] A control switch 11 is provided on the outer casing 1, and the control switch 11 is connected to the power control module.
[0044] Example 2: The electrochromic active layer 4 is composed of several discontinuous pixel blocks.
Claims
1. An electrochromic tablet comprising a housing, an electrochromic assembly, a power supply assembly, the electrochromic assembly being embedded within the housing, the power supply assembly controlling the electrochromic assembly, characterized in that: The electrochromic assembly comprises a bottom rigid conductive substrate, an electrochromic active layer, an inert gas layer and a top flexible conductive substrate arranged in parallel, and the bottom rigid conductive substrate, the electrochromic active layer, the inert gas layer and the top flexible conductive substrate are sequentially and fixedly connected from bottom to top, and the atmosphere of the inert gas layer is composed of one of N2, He, Ne, Ar, Kr, Xe and Rn.
2. The electrochromic tablet according to claim 1, characterized in that: The bottom rigid conductive substrate comprises a bottom rigid conductive substrate base layer and a bottom rigid conductive substrate transparent conductive layer, one side of the bottom rigid conductive substrate transparent conductive layer is fixedly connected with the bottom rigid conductive substrate base layer, and the other side is fixedly connected with the electrochromic active layer.
3. The electrochromic tablet of claim 2, wherein: The top flexible conductive substrate comprises a top flexible conductive substrate base layer and a top flexible conductive substrate transparent conductive layer, one side of the top flexible conductive substrate transparent conductive layer is fixedly connected with the inert gas layer, and the other side is fixedly connected with the flexible conductive substrate base layer.
4. The electrochromic tablet of claim 3, wherein: The electrochromic active layer and the inert gas layer have the same cross-sectional size, a sealant is fixedly arranged around the edges of the electrochromic active layer, the sealant fixedly connects the bottom rigid conductive substrate and the top flexible conductive substrate, and the sealant forms airtight inert gas layer in the gap between the electrochromic active layer and the top flexible conductive substrate.
5. The electrochromic tablet of claim 1, wherein: The thickness of the inert gas layer is 10-3000 μm.
6. The electrochromic tablet of claim 1, wherein: The cross-sectional area of the electrochromic active layer is smaller than that of the bottom rigid conductive substrate and the top flexible conductive substrate, and the edges of the bottom rigid conductive substrate and the top flexible conductive substrate are provided with conductive silver glue.
7. An electrochromic tablet according to claim 6, characterised in that: An opening is arranged on the shell, the bottom rigid conductive substrate, the electrochromic active layer and the inert gas layer are arranged inside the shell, and part of the top flexible conductive substrate is arranged in the opening.
8. The electrochromic tablet of claim 7, wherein: The area of the opening is less than or equal to the cross-sectional area of the electrochromic active layer.
9. The electrochromic tablet of claim 6, wherein: The power supply assembly comprises a power supply module and a power supply control module, the conductive silver glue is fixedly provided with an outgoing electrode, and the power supply control module is connected with the outgoing electrode and the power supply module.
10. The electrochromic tablet of claim 9, wherein: A control switch is arranged on the shell, and the control switch is connected with the power supply control module.