A glueless electrochromic device, apparatus and end product
By using a frameless design, the cavity is formed by the recessed part of the lower conductive layer and the insulating adhesive layer, eliminating the need for a frame. This solves the problems of high production cost and low efficiency in existing electrochromic devices, achieving cost savings and efficiency improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU SHINWU OPTRONICS TECH CO LTD
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-07
AI Technical Summary
The production cost of the frame in existing electrochromic devices is high and the process is complex, which affects production efficiency.
The design adopts a frameless design, which forms a sealed chamber by setting a recess and an insulating adhesive layer on the upper surface of the lower conductive layer, eliminating the need for a frame. The chamber is formed by the recess and the insulating adhesive layer, and the electrochromic layer is set in the chamber. The electrode connection part is set on different sides of the conductive layer and is insulated and isolated.
It saves on the production cost of the plastic frame, simplifies the production process, improves production efficiency, and enhances market competitiveness.
Smart Images
Figure CN224471929U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrochromic technology, and in particular to a frameless electrochromic device, apparatus and end product. Background Technology
[0002] Electrochromism refers to the phenomenon that the optical properties (reflectivity, transmittance, absorptivity, etc.) of a material undergo stable and reversible color changes under the influence of an external electric field, which manifests as reversible changes in color and transparency in appearance.
[0003] Existing electrochromic devices typically consist of an adhesive frame placed between two parallel upper and lower conductive layers. The upper and lower conductive layers, along with the adhesive frame, together form a chamber, into which an electrochromic liquid is then poured to form the electrochromic layer. This design requires an adhesive frame to be applied to the upper surface of the lower conductive layer to mate with the upper conductive layer and form the chamber. How to eliminate the adhesive frame component and the step of forming it, thereby reducing production costs and improving production efficiency, has become a pressing technical challenge in the industry. Summary of the Invention
[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a frameless electrochromic device, apparatus and end product, which eliminates the need for a separate frame and saves the production cost of the frame.
[0005] To achieve the above objectives, this utility model provides a frameless electrochromic device, comprising:
[0006] An upper conductive layer and a lower conductive layer arranged opposite to each other;
[0007] A recess is provided in the middle region of the upper surface of the lower conductive layer;
[0008] The upper conductive layer covers the upper surface of the lower conductive layer;
[0009] An insulating adhesive layer is also provided on the upper surface of the lower conductive layer, and the insulating adhesive layer surrounds the recess.
[0010] The recess, the insulating adhesive layer, and the underlying conductive layer together form a sealed chamber.
[0011] An electrochromic layer is disposed within the cavity;
[0012] A first electrode connection portion is electrically connected to the left side of the lower conductive layer. The orthographic projection of the first electrode connection portion onto the plane of the lower conductive layer does not overlap with the lower conductive layer.
[0013] A second electrode connection is electrically connected to the right side of the upper conductive layer, and an insulating gap is provided between the second electrode connection and the lower conductive layer.
[0014] The electrode connected to the first electrode connection part is opposite to the electrode connected to the second electrode connection part.
[0015] Preferably, the orthographic projection of the second electrode connection portion onto the plane of the upper conductive layer at least partially falls on the upper conductive layer.
[0016] Preferably, the upper conductive layer covers the lower conductive layer;
[0017] The second electrode connection portion is disposed on the area where the upper conductive layer extends beyond the lower conductive layer;
[0018] The second electrode connection is disposed on the lower surface of the upper conductive layer.
[0019] Preferably, both the upper conductive layer and the lower conductive layer are transparent conductive layers;
[0020] The central portion of the electrochromic layer is located within the visible area of the electrochromic device;
[0021] The insulating adhesive layer is located in the non-visible area of the electrochromic device.
[0022] To achieve the above objectives, this application also provides a frameless electrochromic device, including the aforementioned frameless electrochromic device, and further comprising:
[0023] Upper substrate layer and lower substrate layer;
[0024] The upper substrate layer is disposed on the side opposite to the lower conductive layer of the upper conductive layer;
[0025] The lower substrate layer is disposed on the side opposite to the upper conductive layer of the lower conductive layer;
[0026] The upper surface of the lower substrate layer is provided with a groove, and the lower surface of the lower conductive layer, corresponding to the area of the cavity, protrudes downward toward the lower substrate layer and matches the groove.
[0027] Preferably, the substrate layer covers the lower substrate layer;
[0028] The orthographic projection of the lower conductive layer onto the plane of the lower substrate layer falls entirely on the upper surface of the lower substrate layer.
[0029] Preferably, the orthographic projection of the lower substrate layer onto the plane containing the upper substrate layer falls entirely on the upper substrate layer.
[0030] Preferably, the second electrode connection portion is connected to the lower substrate layer.
[0031] Preferably, a first metal layer is further provided between the upper substrate layer and the upper conductive layer, and the first metal layer is arranged in a ring shape in the non-visible area of the electrochromic device;
[0032] A second metal layer is provided between the lower substrate layer and the lower conductive layer, and the second metal layer covers the lower conductive layer.
[0033] To achieve the above objectives, this application also provides a terminal product, including the aforementioned frameless electrochromic device.
[0034] The above technical solution eliminates the need for a separate frame, saving on frame production costs and enhancing market competitiveness.
[0035] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description
[0036] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings:
[0037] Figure 1 This is a schematic diagram of the layer structure of a frameless electrochromic device according to an embodiment of this application.
[0038] Figure label:
[0039] 101-Lower substrate layer; 102-Lower conductive layer; 103-Electrochromic layer; 104-Insulating adhesive layer; 105-First electrode connection portion; 106-Second electrode connection portion; 107-Upper conductive layer; 108-First metal layer; 109-Upper substrate layer. Detailed Implementation
[0040] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0041] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.
[0042] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.
[0043] It should be noted that the terms "first" and "second" may be used in this application only to distinguish different devices, components or parts, and are not used to define the order of functions performed by these devices, components or parts or their interdependence.
[0044] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "More" should be understood as two or more.
[0045] The frameless electrochromic device of this application includes:
[0046] An upper conductive layer 107 and a lower conductive layer 102 are arranged facing each other;
[0047] A recess is provided in the middle region of the upper surface of the lower conductive layer 102;
[0048] The upper conductive layer 107 covers the upper surface of the lower conductive layer 102;
[0049] An insulating adhesive layer 104 is also provided on the upper surface of the lower conductive layer 102, and the insulating adhesive layer 104 surrounds the recess.
[0050] The recess, the insulating adhesive layer 104, and the lower conductive layer 102 together form a sealed chamber.
[0051] An electrochromic layer 103 is disposed within the cavity;
[0052] A first electrode connection portion 105 is electrically connected to the left side of the lower conductive layer 102. The orthographic projection of the first electrode connection portion 105 onto the plane of the lower conductive layer 102 does not overlap with the lower conductive layer 102.
[0053] A second electrode connection portion 106 is electrically connected to the right side of the upper conductive layer 107, and an insulating gap is provided between the second electrode connection portion 106 and the lower conductive layer 102.
[0054] The electrode connected to the first electrode connection portion 105 is opposite to the electrode connected to the second electrode connection portion 106.
[0055] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0056] Example 1
[0057] Figure 1 This is a schematic diagram of the layer structure of a frameless electrochromic device according to an embodiment of this application, as shown below. Figure 1As shown, the frameless electrochromic device of this application includes an upper conductive layer 107 and a lower conductive layer 102 disposed opposite to each other.
[0058] In one exemplary embodiment, a recess is provided in the middle region of the upper surface of the lower conductive layer 102. As needed, the recess may be formed only on the upper surface when the lower surface of the lower conductive layer 102 is flat, or it may be formed by bending both the upper and lower surfaces downwards at the same time.
[0059] In one exemplary embodiment, the upper conductive layer 107 covers the upper surface of the lower conductive layer 102.
[0060] In one exemplary embodiment, both the upper conductive layer 107 and the lower conductive layer 102 are transparent conductive layers.
[0061] In one exemplary embodiment, the upper conductive layer 107 and the lower conductive layer 102 may be made of the same material, for example, both may be ITO, which is indium tin oxide.
[0062] In an exemplary embodiment, an insulating adhesive layer 104 is further provided on the upper surface of the lower conductive layer 102, the insulating adhesive layer 104 being used to bond the upper surface of the lower conductive layer 102 and the lower surface of the upper conductive layer 107 together.
[0063] In one exemplary embodiment, the insulating adhesive layer 104 surrounds the recess, i.e., the insulating adhesive layer 104 is annular and the recess is located within the annulus formed by the insulating adhesive layer 104.
[0064] In an exemplary embodiment, the height of the insulating adhesive layer 104 in this application embodiment is 5 micrometers. It can be understood that the function of the insulating adhesive layer 104 in this application embodiment is only to bond the upper surface of the lower conductive layer 102 and the lower surface of the upper conductive layer 107 together, and is not used as a frame in the existing structure to form a dam to restrict the electrochromic layer 103. That is, the accommodating space of the electrochromic layer 103 in this application embodiment mainly depends on the recess provided in the middle region of the upper surface of the lower conductive layer 102.
[0065] In one exemplary embodiment, the recessed portion in the middle region of the upper surface of the lower conductive layer 102 is injected with electrochromic liquid in a different way than the existing structure of forming a dam with a plastic frame. The electrochromic liquid in this application can be directly dripped in, while the existing structure of forming a dam with a plastic frame requires a vacuum method, which is also the difference between the two.
[0066] In an exemplary embodiment, the recess, the insulating adhesive layer 104, and the lower conductive layer 102 together form a sealed chamber. Although an insulating adhesive layer 104 is provided between the upper conductive layer 107 and the lower conductive layer 102, the insulating adhesive layer 104 in this application is only used to bond the two together. This is different from the design of the existing adhesive frame. That is, the elimination of the adhesive frame in this application mainly relies on the recessed design of the middle area of the lower conductive layer 102.
[0067] In one exemplary embodiment, the electrochromic layer 103 is disposed within the cavity.
[0068] In one exemplary embodiment, the electrochromic layer 103 may be formed by curing an electrochromic liquid.
[0069] In one exemplary embodiment, the central portion of the electrochromic layer 103 is located in the visible area of the electrochromic device.
[0070] In one exemplary embodiment, the insulating adhesive layer 104 is located in the non-visible area of the electrochromic device.
[0071] In one exemplary embodiment, the orthographic projection of the insulating adhesive layer 104 onto the plane containing the upper conductive layer 107 falls entirely on the upper conductive layer 107.
[0072] In one exemplary embodiment, the orthographic projection of the insulating adhesive layer 104 onto the plane of the lower conductive layer 102 falls outside the lower conductive layer 102. For example, on the right side of the frameless electrochromic device of this application, the orthographic projection of the insulating adhesive onto the plane of the lower conductive layer 102 falls at least partially outside the lower conductive layer 102; it can be understood that the lower conductive layer 102 on the right side has an inward design.
[0073] In one exemplary embodiment, a first electrode connection portion 105 is electrically connected to the left side of the lower conductive layer 102.
[0074] In one exemplary embodiment, the orthographic projection of the first electrode connection portion 105 onto the plane where the lower conductive layer 102 is located does not overlap with the lower conductive layer 102.
[0075] In one exemplary embodiment, a second electrode connection portion 106 is electrically connected to the right side of the upper conductive layer 107, and an insulating gap is provided between the second electrode connection portion 106 and the lower conductive layer 102, such as... Figure 1 As shown.
[0076] In one exemplary embodiment, the provision of an insulating gap between the second electrode connection portion 106 and the lower conductive layer 102 means that the second electrode connection portion 106 and the lower conductive layer 102 are not connected and are electrically insulated from each other.
[0077] In one exemplary embodiment, the electrode connected to the first electrode connection portion 105 is opposite to the electrode connected to the second electrode connection portion 106; for example, the first electrode connection portion 105 is connected to a negative electrode, and the second electrode connection portion 106 is connected to a positive electrode.
[0078] In one exemplary embodiment, the orthographic projection of the second electrode connection portion 106 onto the plane of the upper conductive layer 107 at least partially falls on the upper conductive layer 107; if necessary, the orthographic projection of the second electrode connection portion 106 onto the plane of the upper conductive layer 107 falls entirely on the upper conductive layer 107.
[0079] In one exemplary embodiment, the upper conductive layer 107 covers the lower conductive layer 102; the horizontal length of the upper conductive layer 107 is greater than the horizontal length of the lower conductive layer 102 as needed.
[0080] In one exemplary embodiment, the second electrode connection portion 106 is disposed on the region of the upper conductive layer 107 that extends beyond the lower conductive layer 102, such as... Figure 1 As shown.
[0081] In one exemplary embodiment, the second electrode connection portion 106 is disposed on the lower surface of the upper conductive layer 107.
[0082] In one exemplary embodiment, both the first electrode connection portion 105 and the second electrode connection portion 106 are strip-shaped structures.
[0083] In one exemplary embodiment, both the first electrode connection portion 105 and the second electrode connection portion 106 are conductive silver paste.
[0084] Example 2
[0085] Example 2 is a frameless electrochromic device, which includes the frameless electrochromic device described in the above example.
[0086] In an exemplary embodiment, the frameless electrochromic device of this application further includes an upper substrate layer 109 and a lower substrate layer 101.
[0087] In one exemplary embodiment, both the upper substrate layer 109 and the lower substrate layer 101 are transparent substrates, for example, both are transparent glass.
[0088] In one exemplary embodiment, the upper substrate layer 109 is disposed on the side of the upper conductive layer 107 opposite to the lower conductive layer 102.
[0089] In one exemplary embodiment, the lower substrate layer 101 is disposed on the side of the lower conductive layer 102 opposite to the upper conductive layer 107.
[0090] In one exemplary embodiment, the upper surface of the lower substrate layer 101 is provided with a groove, and the lower surface of the lower conductive layer 102 protrudes towards the lower substrate layer 101 in the region corresponding to the cavity, and matches the groove, that is, the protrusion of the lower surface of the lower conductive layer 102 falls into the groove on the upper surface of the lower substrate layer 101, such as... Figure 1 As shown.
[0091] In an exemplary embodiment, in the frameless electrochromic device of this application, the protrusion on the lower surface of the lower conductive layer 102 may be formed by relying on the groove on the upper surface of the lower substrate layer 101. It can be understood that there is a groove in the middle area of the upper surface of the lower substrate layer 101, and the lower conductive layer 102 is formed on the upper surface of the lower substrate layer 101 by relying on the groove.
[0092] In one exemplary embodiment, the upper substrate layer 109 covers the lower substrate layer 101.
[0093] In one exemplary embodiment, the orthographic projection of the lower conductive layer 102 onto the plane of the lower substrate layer 101 falls entirely on the upper surface of the lower substrate layer 101.
[0094] In one exemplary embodiment, the orthographic projection of the lower substrate layer 101 onto the plane containing the lower conductive layer 102 partially falls outside the lower conductive layer 102; for example, in the right-hand region, a portion of the orthographic projection of the lower substrate layer 101 onto the plane containing the lower conductive layer 102 falls outside the lower conductive layer 102, such as... Figure 1 As shown.
[0095] In one exemplary embodiment, the orthographic projection of the lower substrate layer 101 onto the plane containing the upper substrate layer 109 falls entirely on the upper substrate layer 109.
[0096] In one exemplary embodiment, the first electrode connection portion 105 may extend downward to connect with the lower substrate layer 101 as needed.
[0097] In an exemplary embodiment, the second electrode connection portion 106 is connected to the lower substrate layer 101; that is, the second electrode connection portion 106 can extend downward to connect with the lower substrate layer 101, but the second electrode connection portion 106 is still not connected to the lower conductive layer 102. It can be understood that although the second electrode connection portion 106 extends downward to connect with the lower substrate layer 101, the inward design of the lower conductive layer 102 at this location still maintains an insulating gap between the lower conductive layer 102 and the second electrode connection portion 106.
[0098] In one exemplary embodiment, a first metal layer 108 is further provided between the upper substrate layer 109 and the upper conductive layer 107.
[0099] In one exemplary embodiment, the first metal layer 108 is disposed in a ring shape in the non-visible area of the electrochromic device.
[0100] In one exemplary embodiment, the first metal layer 108 is a chromium ring.
[0101] In one exemplary embodiment, a second metal layer is further provided between the lower substrate layer 101 and the lower conductive layer 102.
[0102] In one exemplary embodiment, a second metal layer covers the lower conductive layer 102.
[0103] In one exemplary embodiment, the second metal layer may be a silver layer, if necessary.
[0104] In one exemplary embodiment, when a second metal layer is present, the second metal layer and the lower conductive layer 102 coincide in their orthographic projections onto each other's planes.
[0105] Example 3
[0106] Example 3 is a terminal product, including the frameless electrochromic device of the above embodiments, and / or the frameless electrochromic apparatus of the above embodiments.
[0107] In one exemplary embodiment, the terminal product of this application embodiment is, for example, a rearview mirror, a car sunroof, a car windshield, a screen of an electronic product, etc., wherein the rearview mirror includes an interior rearview mirror and an exterior rearview mirror.
[0108] It will be understood by those skilled in the art that the above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A frameless electrochromic device, characterized in that, include: An upper conductive layer and a lower conductive layer arranged opposite to each other; The upper surface of the lower conductive layer has a recessed portion in the middle region; The upper conductive layer covers the upper surface of the lower conductive layer; An insulating adhesive layer is also provided on the upper surface of the lower conductive layer, and the insulating adhesive layer surrounds the recess. The recess, the insulating adhesive layer, and the lower conductive layer together form a sealed chamber. An electrochromic layer is disposed within the cavity; A first electrode connection portion is electrically connected to the left side of the lower conductive layer, and the orthographic projection of the first electrode connection portion onto the plane of the lower conductive layer does not overlap with the lower conductive layer. A second electrode connection portion is electrically connected to the right side of the upper conductive layer, and an insulating gap is provided between the second electrode connection portion and the lower conductive layer; The electrode connected to the first electrode connection portion is opposite to the electrode connected to the second electrode connection portion.
2. The frameless electrochromic device according to claim 1, characterized in that, The orthographic projection of the second electrode connection portion onto the plane of the upper conductive layer at least partially falls on the upper conductive layer.
3. The frameless electrochromic device according to claim 1, characterized in that, The upper conductive layer covers the lower conductive layer; The second electrode connection portion is disposed on the region of the upper conductive layer that extends beyond the lower conductive layer; The second electrode connection portion is disposed on the lower surface of the upper conductive layer.
4. The frameless electrochromic device according to claim 1, characterized in that, Both the upper conductive layer and the lower conductive layer are transparent conductive layers; The central portion of the electrochromic layer is located within the visible area of the electrochromic device; The insulating adhesive layer is located in the non-visible area of the electrochromic device.
5. A frameless electrochromic device, characterized in that, include: The electrochromic device according to any one of claims 1-4 further comprises: Upper substrate layer and lower substrate layer; The upper substrate layer is disposed on the side of the upper conductive layer that faces away from the lower conductive layer; The lower substrate layer is disposed on the side of the lower conductive layer opposite to the upper conductive layer; The upper surface of the lower substrate layer is provided with a groove, and the lower surface of the lower conductive layer protrudes in the direction of the lower substrate layer in the area corresponding to the cavity, and matches the groove.
6. The frameless electrochromic device according to claim 5, characterized in that, The upper substrate layer covers the lower substrate layer; The orthographic projection of the lower conductive layer onto the plane of the lower substrate layer falls entirely on the upper surface of the lower substrate layer.
7. The frameless electrochromic device according to claim 5, characterized in that, The orthographic projection of the lower substrate layer onto the plane containing the upper substrate layer falls entirely on the upper substrate layer.
8. The frameless electrochromic device according to claim 5, characterized in that, The second electrode connection portion is connected to the lower substrate layer.
9. The frameless electrochromic device according to claim 5, characterized in that, A first metal layer is further provided between the upper substrate layer and the upper conductive layer, and the first metal layer is arranged in a ring shape in the non-visible area of the electrochromic device. A second metal layer is provided between the lower substrate layer and the lower conductive layer, and the second metal layer covers the lower conductive layer.
10. A terminal product, characterized in that, Includes the frameless electrochromic device according to any one of claims 6-9.