Bendable electrochromic device

Abstract

The utility model relates to a bendable electrochromic device, and belongs to the field of electrochromic devices.The bendable electrochromic device comprises a first transparent base material layer, a first bonding layer fixedly bonded to the lower surface of the first transparent base material layer and a first transparent conductive layer arranged on the lower surface of the first bonding layer, and a reinforcing toughness assembly is arranged on the lower surface of the first transparent conductive layer; the reinforcing toughness assembly comprises a plurality of transverse reinforcing ribs which are fixedly connected to the lower surface of the first transparent conductive layer, and the outer portions of the transverse reinforcing ribs are fixedly connected with a plurality of vertical reinforcing ribs. According to the bendable electrochromic device, the transverse reinforcing ribs and the vertical reinforcing ribs are arranged, so that the toughness of the electrochromic device body during bending is improved, the electrochromic device body is prevented from being broken or damaged in the bending process, and the mechanical durability of the electrochromic device body is good; the performance and the attractiveness of the electrochromic device body are guaranteed, and the advantage of being bendable is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electrochromic devices, and in particular to a bendable electrochromic device. Background Art

[0002] Under the stimulation of external voltage, the intelligent electrochromic device causes the material to undergo redox reaction by embedding or extracting ions and electrons, resulting in a continuous and reversible change in optical characteristics, which is manifested in the reversible change of color and transparency. Electrochromic devices made of electrochromic materials have the advantages of low energy consumption, fast response, and human control. They are widely used in various fields to improve the degree of natural light and prevent peeping, solving the problem of worsening urban light pollution in modern times.

[0003] In the process of electronic equipment application, a bendable electrochromic device is needed. After searching, the Chinese patent CN214669989U in the prior art discloses an electrochromic device, which includes a first substrate layer, a first conductive layer, a solid color-changing layer, a second conductive layer, and a second substrate layer stacked in sequence; and a seal arranged around the side of the electrochromic device; the seal includes a structural adhesive layer and a sealing adhesive layer located outside the structural adhesive layer. The utility model uses a sealing structure with two layers of adhesive, which has good sealing performance and good water vapor barrier effect. The setting of the varnish layer makes it unnecessary to wipe or reduces the difficulty of wiping, which can ensure the good performance of the device.

[0004] However, when the utility model electrochromic device is put into use, it needs to adapt to electronic devices of various application scenarios. However, due to the limited bending degree of the electrochromic device, the practicality of the electrochromic device is seriously reduced and cannot meet the use requirements. Therefore, a bendable electrochromic device is proposed to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a flexible electrochromic device having the advantages of flexibility and strong practicality, etc., which solves the problem that the existing electrochromic devices need to adapt to electronic devices in various application scenarios when they are put into use. However, due to the limited bending degree of the electrochromic device, the practicality of the electrochromic device is seriously reduced and cannot meet the use requirements.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solutions: a bendable electrochromic device, comprising a first transparent substrate layer, a first adhesive layer fixedly bonded to the lower surface of the first transparent substrate layer, and a first transparent conductive layer arranged on the lower surface of the first adhesive layer, wherein a reinforcement toughness component is arranged on the lower surface of the first transparent conductive layer;

[0007] The reinforced toughness component includes a number of transverse reinforcing ribs fixedly connected to the lower surface of the first transparent conductive layer, and a number of vertical reinforcing ribs are fixedly connected to the outside of the transverse reinforcing ribs.

[0008] Furthermore, a plurality of the transverse reinforcing ribs are horizontally evenly spaced and distributed on the lower surface of the first transparent conductive layer, a plurality of the vertical reinforcing ribs are vertically evenly spaced and distributed outside the plurality of the transverse reinforcing ribs, and the transverse reinforcing ribs are cross-connected with the vertical reinforcing ribs.

[0009] Furthermore, a first transparent base layer is bonded between the first bonding layer and the first transparent conductive layer, and the first transparent base layer is ITO, FTO or AZO.

[0010] Furthermore, an electrolyte layer is fixedly bonded to the lower surface of the reinforced toughness component. The electrolyte layer is a polymer electrolyte of a polyvinyl butyral system, and the thickness of the electrolyte layer is 30-200 nm.

[0011] Furthermore, a second transparent substrate layer is fixedly bonded to the bottom of the electrolyte layer, and an electrochromic layer is fixedly bonded to the bottom of the second transparent substrate layer.

[0012] Furthermore, a varnish layer is laid on the bottom of the electrochromic layer, the width of the varnish layer is less than or equal to 25 mm, and the thickness of the varnish layer is 1 μm-10 μm.

[0013] Furthermore, a second transparent substrate layer is fixedly bonded to the bottom of the varnish layer, and a second adhesive layer is fixedly bonded to the bottom of the second transparent substrate layer.

[0014] Furthermore, a sealant layer is fixedly bonded to the bottom of the second adhesive layer, and the sealant layer is a transparent structural layer.

[0015] Compared with the prior art, the utility model provides a bendable electrochromic device, which has the following beneficial effects:

[0016] 1. The bendable electrochromic device improves the toughness of the electrochromic device body when being bent by arranging transverse reinforcing ribs and vertical reinforcing ribs, thereby preventing the electrochromic device body from being broken or damaged during the bending process, so that the electrochromic device body has good mechanical durability and will not break or leave traces after repeated bending, thereby ensuring the performance and aesthetics of the electrochromic device body and achieving the advantage of being bendable.

[0017] 2. The bendable electrochromic device can effectively reduce the thickness of the electrochromic device body, reduce the internal stress of the structure, and reduce the impact of ITO non-uniformity by setting the first transparent substrate layer, the first transparent base layer, the second transparent substrate layer and the sealant layer. It can effectively reduce the cost while ensuring the performance of the transparent conductive electrode, thus achieving the advantage of strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0019] Figure 2 This is a structural stereogram of the reinforced toughness component of the utility model.

[0020] In the figure: 1 first transparent substrate layer, 2 first adhesive layer, 3 first transparent substrate layer, 4 first transparent conductive layer, 5 reinforcement toughness component, 51 transverse reinforcement ribs, 52 vertical reinforcement ribs, 6 electrolyte layer, 7 second transparent substrate layer, 8 electrochromic layer, 9 varnish layer, 10 second transparent substrate layer, 11 second adhesive layer, 12 sealant layer. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 In this embodiment, a bendable electrochromic device comprises a first transparent substrate layer 1, a first adhesive layer 2 fixedly bonded to the lower surface of the first transparent substrate layer 1, and a first transparent conductive layer 4 arranged on the lower surface of the first adhesive layer 2. A reinforcing toughness component 5 is arranged on the lower surface of the first transparent conductive layer 4. The reinforcing toughness component 5 comprises a number of transverse reinforcing ribs 51 fixedly connected to the lower surface of the first transparent conductive layer 4, and a number of vertical reinforcing ribs 52 are fixedly connected to the outside of the transverse reinforcing ribs 51. By arranging the transverse reinforcing ribs 51 and the vertical reinforcing ribs 52, the toughness of the electrochromic device body during bending is improved, and the electrochromic device body is prevented from being broken or damaged during the bending process, so that the electrochromic device body has good mechanical durability, and will not break and leave traces after repeated bending, thereby ensuring the performance and aesthetics of the electrochromic device body and achieving the advantage of bendability.

[0023] Among them, a plurality of transverse reinforcing ribs 51 are horizontally evenly spaced and distributed on the lower surface of the first transparent conductive layer 4, and a plurality of vertical reinforcing ribs 52 are vertically evenly spaced and distributed outside the plurality of transverse reinforcing ribs 51, and the transverse reinforcing ribs 51 and the vertical reinforcing ribs 52 are cross-connected. By providing the transverse reinforcing ribs 51 and the vertical reinforcing ribs 52, the surface curvature of the electrochromic device body is made smoother, so that the curved surface shape of the outermost surface of the product can be ensured while avoiding the separation of other internal film layers, especially the weak film layers, due to the small radius of curvature.

[0024] In this embodiment, a first transparent base layer 3 is bonded between the first adhesive layer 2 and the first transparent conductive layer 4. The first transparent base layer 3 is ITO, FTO or AZO.

[0025] The lower surface of the reinforced toughness component 5 is fixedly bonded with an electrolyte layer 6, the electrolyte layer 6 is a polymer electrolyte of a polyvinyl butyral system, and the thickness of the electrolyte layer 6 is 30-200 nm.

[0026] It should be noted that the second transparent substrate layer 7 is fixedly bonded to the bottom of the electrolyte layer 6 , and the electrochromic layer 8 is fixedly bonded to the bottom of the second transparent substrate layer 7 .

[0027] Furthermore, a varnish layer 9 is laid on the bottom of the electrochromic layer 8 , the width of the varnish layer 9 is less than or equal to 25 mm, and the thickness of the varnish layer 9 is 1 μm-10 μm.

[0028] In this embodiment, the bottom of the varnish layer 9 is fixedly bonded with the second transparent base layer 10, and the bottom of the second transparent base layer 10 is fixedly bonded with the second adhesive layer 11. By providing the first transparent substrate layer 1, the first transparent base layer 3, the second transparent base layer 10 and the sealant layer 12, the thickness of the electrochromic device body can be effectively reduced, the internal stress of the structure can be reduced, and the influence caused by the non-uniformity of ITO can be reduced, which can effectively reduce the cost while ensuring the performance of the transparent conductive electrode, achieving the advantage of strong practicality.

[0029] A sealant layer 12 is fixedly bonded to the bottom of the second adhesive layer 11 , and the sealant layer 12 is a transparent structural layer.

[0030] The working principle of the above embodiment is:

[0031] When in use, by setting the transverse reinforcing ribs 51 and the vertical reinforcing ribs 52, the toughness of the electrochromic device body during bending is improved, and the electrochromic device body is prevented from breaking or being damaged during the bending process, so that the electrochromic device body has good mechanical durability and will not break or leave traces after repeated bending. By setting the first transparent substrate layer 1, the first transparent base layer 3, the second transparent base layer 10 and the sealant layer 12, the thickness of the electrochromic device body can be effectively reduced, the internal stress of the structure can be reduced, and the impact caused by I TO non-uniformity can be reduced.

[0032] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail. The device is powered by an external power supply.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bendable electrochromic device, characterized in that: It comprises a first transparent substrate layer (1), a first adhesive layer (2) fixedly bonded to the lower surface of the first transparent substrate layer (1), and a first transparent conductive layer (4) arranged on the lower surface of the first adhesive layer (2), wherein a reinforcing toughness component (5) is arranged on the lower surface of the first transparent conductive layer (4); The reinforcing toughness component (5) comprises a number of transverse reinforcing ribs (51) fixedly connected to the lower surface of the first transparent conductive layer (4), and a number of vertical reinforcing ribs (52) are fixedly connected to the outside of the transverse reinforcing ribs (51).

2. A bendable electrochromic device according to claim 1, characterized in that: A plurality of the transverse reinforcing ribs (51) are distributed at equal intervals in the transverse direction on the lower surface of the first transparent conductive layer (4), a plurality of the vertical reinforcing ribs (52) are distributed at equal intervals in the vertical direction outside the plurality of the transverse reinforcing ribs (51), and the transverse reinforcing ribs (51) and the vertical reinforcing ribs (52) are cross-connected.

3. The bendable electrochromic device according to claim 1, characterized in that: A first transparent substrate layer (3) is bonded between the first bonding layer (2) and the first transparent conductive layer (4), and the first transparent substrate layer (3) is ITO, FTO or AZO.

4. The bendable electrochromic device according to claim 3, characterized in that: An electrolyte layer (6) is fixedly bonded to the lower surface of the reinforced toughness component (5); the electrolyte layer (6) is a polymer electrolyte of a polyvinyl butyral system; and the thickness of the electrolyte layer (6) is 30-200 nm.

5. The bendable electrochromic device according to claim 4, characterized in that: A second transparent substrate layer (7) is fixedly bonded to the bottom of the electrolyte layer (6), and an electrochromic layer (8) is fixedly bonded to the bottom of the second transparent substrate layer (7).

6. The bendable electrochromic device according to claim 5, characterized in that: A varnish layer (9) is laid on the bottom of the electrochromic layer (8); the width of the varnish layer (9) is less than or equal to 25 mm; and the thickness of the varnish layer (9) is 1 μm-10 μm.

7. The bendable electrochromic device according to claim 6, characterized in that: A second transparent base layer (10) is fixedly bonded to the bottom of the varnish layer (9), and a second adhesive layer (11) is fixedly bonded to the bottom of the second transparent base layer (10).

8. The bendable electrochromic device according to claim 7, characterized in that: A sealant layer (12) is fixedly bonded to the bottom of the second adhesive layer (11), and the sealant layer (12) is a transparent structural layer.

Images