Electrochromic films and glasses

Abstract

This application relates to the field of electrochromic technology and discloses an electrochromic film and eyeglasses. The film includes a first water-blocking and conductive composite film layer, an electrochromic layer, and a second water-blocking and conductive composite film layer sequentially disposed therefrom. Both the first and second water-blocking and conductive composite film layers include a substrate layer, a water-oxygen barrier layer, and a conductive layer. The water-oxygen barrier layer is formed on the surface of the substrate layer, and the conductive layer is disposed close to the electrochromic layer. In this application, the water-oxygen barrier layer and the conductive layer share the same substrate layer, reducing one substrate layer and the optical adhesive connecting the water-oxygen barrier layer and the electrochromic film. This results in a reduced overall thickness and offers the advantage of flexibility and bendability, allowing it to be bonded to flat or curved lenses using a lamination process.

Description

Technical Field

[0001] This application relates to the field of electrochromic technology, and more specifically, to an electrochromic film and eyeglasses. Background Technology

[0002] Electrochromic light-changing films can be applied to eyeglasses, including AR glasses, AI glasses, and Bluetooth music glasses. When wearing these glasses with color-changing capabilities, users can manually or automatically adjust the lens transmittance to avoid glare in bright light, and then increase the transmittance in low light for better visibility. Therefore, glasses with electrochromic functionality allow the eyes to always be in a comfortable viewing state.

[0003] An existing electrochromic lens comprises, from the inside out, an anti-fingerprint layer, an optical anti-reflective layer, a transparent substrate A, a stress protection layer, a color-correcting layer, a first transparent conductive layer, an inorganic EC composite functional layer, a second transparent conductive layer, a transparent protective layer (equivalent to a base layer), a first optical adhesive, a water-oxygen barrier film, a second optical adhesive, a transparent substrate B, the optical anti-reflective layer, and the anti-fingerprint layer. The water-oxygen barrier layer and the transparent protective layer are bonded together by the first optical adhesive layer, and the water-oxygen barrier layer and the transparent substrate are bonded together by the second optical adhesive layer. However, this structure, which bonds the independent water-oxygen barrier layer, conductive layer, and transparent substrate together with optical adhesive layers, has a relatively large thickness, resulting in a heavy weight and making it unsuitable for bonding curved lenses. Utility Model Content

[0004] The purpose of this invention is to provide a lens structure based on a thin-film electrochromic device, which has advantages such as thinness and light weight, and is more suitable for curved surface bonding.

[0005] To achieve the above-mentioned objectives, this application adopts the following technical solution: In a first aspect, this application provides an electrochromic film, comprising a first water-blocking and conductive composite film layer, an electrochromic layer, and a second water-blocking and conductive composite film layer disposed sequentially. Both the first water-blocking and conductive composite film layer and the second water-blocking and conductive composite film layer include a substrate layer, a water-oxygen barrier layer, and a conductive layer; the water-oxygen barrier layer is formed on the surface of the substrate layer, and the conductive layer is disposed close to the electrochromic layer.

[0006] Furthermore, both the first water-blocking and conductive composite film layer and the second water-blocking and conductive composite film layer include a water-oxygen barrier layer, a substrate layer, and a conductive layer arranged sequentially.

[0007] Furthermore, both the first water-blocking and conductive composite film layer and the second water-blocking and conductive composite film layer include a substrate layer, a water and oxygen barrier layer, and a conductive layer arranged sequentially.

[0008] Furthermore, the electrochromic layer includes an electrochromic material layer (EC layer), an electrolyte layer (EL layer), and an ion storage layer (IS layer) disposed sequentially.

[0009] Secondly, this application provides eyeglasses, including lenses and an electrochromic film as described in any of the first aspects.

[0010] Furthermore, a first optical adhesive layer is disposed between the lens and the electrochromic film and is connected through the first optical adhesive layer.

[0011] Furthermore, a first additional functional film layer is provided on the side of the electrochromic film away from the electrochromic layer, and a second optical adhesive layer is provided between the first additional functional film layer and the electrochromic film and is connected by the second optical adhesive layer. And / or a second additional functional film layer is provided on the side of the lens away from the electrochromic film, and a third optical adhesive layer is provided between the second additional functional film layer and the lens and is connected by the third optical adhesive layer.

[0012] Furthermore, the first additional functional film layer and the second additional functional film layer are any one of the following: anti-fingerprint layer, anti-scratch layer, anti-fog layer, and anti-reflective layer; Alternatively, the first additional functional film layer and the second additional functional film layer may be a composite layer with one or more functions such as anti-fingerprint, anti-scratch, anti-fog, and anti-reflective properties.

[0013] Furthermore, the lens has a planar or curved structure.

[0014] In summary, this application has the following beneficial effects: Compared to traditional electrochromic films, both the first and second water-blocking conductive composite films include a substrate layer, a water-oxygen barrier layer, and a conductive layer. The water-oxygen barrier layer is formed on the surface of the substrate layer, and the conductive layer is positioned close to the electrochromic layer and electrically connected to it. This film can achieve electrochromism and block water and oxygen. Because the water-oxygen barrier layer and the conductive layer share the same substrate layer, one substrate layer and the optical adhesive connecting the water-oxygen barrier layer and the electrochromic film are reduced, resulting in a lower overall thickness. It also has the advantage of being flexible and bendable, and can be bonded to flat or curved lenses using a lamination process. Attached Figure Description

[0015] Figure 1 : A schematic diagram of the electrochromic film in Embodiment 1 of this application; Figure 2 : A schematic diagram of the electrochromic film structure in Embodiment 2 of this application; Figure 3 : A schematic diagram of the structure of the glasses in Embodiment 3 of this application; Figure 4 : A schematic diagram of the structure of the glasses in Embodiment 4 of this application; Figure 5 : A schematic diagram of the structure of the glasses in Embodiment 5 of this application.

[0016] Reference numerals: 100, lens; 200, first optical adhesive layer; 300, first water-blocking and conductive composite film layer; 301, first water and oxygen barrier layer; 302, first substrate layer; 303, first conductive layer; 400, electrochromic layer; 500, second water-blocking and conductive composite film layer; 501, second water and oxygen barrier layer; 502, second substrate layer; 503, second conductive layer; 600, second optical adhesive layer; 700, first additional functional film layer; 800, second additional functional film layer; 900, third optical adhesive layer. Detailed Implementation

[0017] The technical solutions and effects of this application will be further described in detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the invention, not the entire structure.

[0018] Example 1: Electrochromic film This embodiment discloses an electrochromic film, such as Figure 1 As shown, it includes a first water-blocking and conductive composite film layer 300, an electrochromic layer 400, and a second water-blocking and conductive composite film layer 500 arranged sequentially.

[0019] The first water-blocking and conductive composite film layer 300 and the second water-blocking and conductive composite film layer 500 are characterized by combining the properties of a water-oxygen barrier layer and a conductive layer. They include a substrate layer, with a water-oxygen barrier layer on one side and a conductive layer on the other. This composite film is commercially available from suppliers including 3M (USA), Oike (Japan), and Rijiu Optoelectronics (China). The thickness of the substrate layer ranges from 20 to 200 micrometers.

[0020] like Figure 1 As shown, the first water-blocking and conductive composite film layer 300 includes a first water-oxygen barrier layer 301, a first substrate layer 302, and a first conductive layer 303 arranged sequentially; the second water-blocking and conductive composite film layer 500 includes a second water-oxygen barrier layer 501, a second substrate layer 502, and a second conductive layer 503 arranged sequentially. Both the first conductive layer 303 and the second conductive layer 503 are disposed close to and in direct contact with the electrochromic layer 400.

[0021] The substrate layer can be a PET substrate layer; the conductive layer can be an ITO transparent conductive layer. A water and oxygen barrier layer can prevent water vapor from corroding the electrochromic layer 400. The electrochromic device is similar to a lithium-ion device, where Li... + The active ingredients are easily corroded by moisture. Furthermore, the PET substrate layer has relatively poor water resistance, typically between 10 and 30 g / (m²). 2 •24h). The water-oxygen barrier layer can achieve a water-impermeability of 10. -3 g / (m 2 ·24h), or even 10 -5 g / (m 2 • 24h) can greatly extend the service life of electrochromic devices.

[0022] The electrochromic layer 400 comprises, sequentially arranged, an electrochromic material layer (EC layer), an electrolyte layer (EL layer), and an ion storage layer (IS layer). The EC layer may optionally be made of conductive polymers such as polythiophene, polypyrrole, or polyaniline; the IS layer may be made of materials disclosed in Chinese Patent Application Publication No. CN 110723748 A; and the EL layer may be made of materials disclosed in Chinese Patent Application Publication No. CN 108463912 A. The order of these three layers can be EC / EL / IS or IS / EL / EC. Changing the order does not affect the effect.

[0023] Example 2: Electrochromic film This embodiment discloses an electrochromic film, which differs from Embodiment 1 in that, as Figure 2 As shown, the first water-blocking and conductive composite film layer 300 includes a first substrate layer 302, a first water-oxygen barrier layer 301, and a first conductive layer 303 arranged sequentially; the second water-blocking and conductive composite film layer 500 includes a second substrate layer 502, a second water-oxygen barrier layer 501, and a second conductive layer 503 arranged sequentially. Both the first conductive layer 303 and the second conductive layer 503 are disposed close to and in direct contact with the electrochromic layer 400.

[0024] Example 3: Eyeglasses This embodiment discloses a pair of glasses, such as Figure 3 As shown, the device includes a lens 100 and an electrochromic film according to an embodiment. A first optical adhesive layer 200 is disposed between the lens 100 and the electrochromic film and they are connected by the first optical adhesive layer 200.

[0025] Lens 100 has a flat or curved structure and can be made of glass or resin material layers. In normal commercial applications, single-curved or double-curved resin lenses are generally the main type, and resin materials include polycarbonate, acrylic, cellulose triacetate, cellulose acetate, etc.

[0026] The first optical adhesive layer 200 can be any of the following materials: polyvinyl butyral, ethylene-vinyl acetate copolymer, OCA optical adhesive, SCA optical adhesive, ionic interlayer, or liquid optical adhesive (LOCA). In normal commercial applications, OCA optical adhesive is most commonly used, with a thickness ranging from 10 to 200 micrometers. In this embodiment, the first optical adhesive layer 200 uses OCA optical adhesive with a thickness of 50 micrometers.

[0027] Example 4: Eyeglasses This embodiment discloses a pair of glasses, which differs from Embodiment 3 in that, as Figure 4 As shown, on the side of the electrochromic film away from the lens 100, a first additional functional film layer 700 is also bonded together by a second optical adhesive layer 600.

[0028] The material range and thickness range of the second optical adhesive layer 600 are the same as those of the first optical adhesive layer 200. The first additional functional film layer 700 includes one or more of the following: an anti-fingerprint layer, an anti-scratch layer, an anti-fog layer, and an anti-reflective layer; or it is a composite layer with one or more of the following functions: anti-fingerprint, anti-scratch, anti-fog, and anti-reflective. The first additional functional film layer 700 can be commercially available.

[0029] Example 5: Eyeglasses This embodiment discloses a pair of glasses, which differs from Embodiment 4 in that, Figure 5 As shown, on the side of the lens 100 away from the electrochromic film, a second additional functional film layer 800 is also bonded by a third optical adhesive layer 900.

[0030] The material range and thickness range of the third optical adhesive layer 900 are the same as those of the first optical adhesive layer 200; the material range and thickness range of the second additional functional film layer 800 are the same as those of the first additional functional film layer 700.

[0031] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An electrochromic film, characterized in that, It includes a first water-blocking and conductive composite film layer (300), an electrochromic layer (400), and a second water-blocking and conductive composite film layer (500) arranged sequentially. Both the first water-blocking and conductive composite film layer (300) and the second water-blocking and conductive composite film layer (500) include a substrate layer, a water-oxygen barrier layer and a conductive layer; the water-oxygen barrier layer is formed on the surface of the substrate layer, and the conductive layer is disposed close to the electrochromic layer (400).

2. The electrochromic film according to claim 1, characterized in that, Both the first water-blocking and conductive composite film layer (300) and the second water-blocking and conductive composite film layer (500) include a water-oxygen barrier layer, a substrate layer and a conductive layer arranged sequentially.

3. The electrochromic film according to claim 1, characterized in that, Both the first water-blocking and conductive composite film layer (300) and the second water-blocking and conductive composite film layer (500) include a substrate layer, a water and oxygen barrier layer and a conductive layer arranged sequentially.

4. The electrochromic film according to claim 1, characterized in that, The electrochromic layer (400) includes an electrochromic material layer, an electrolyte layer and an ion storage layer arranged sequentially.

5. A pair of eyeglasses, characterized in that, Includes a lens (100) and an electrochromic film as described in any one of claims 1-4.

6. The eyeglasses according to claim 5, characterized in that, A first optical adhesive layer (200) is disposed between the lens (100) and the electrochromic film, and the two are connected by the first optical adhesive layer (200).

7. The eyeglasses according to claim 5, characterized in that, A first additional functional film layer (700) is also provided on the side of the electrochromic film away from the electrochromic layer (400), and a second optical adhesive layer (600) is provided between the first additional functional film layer (700) and the electrochromic film and is connected through the second optical adhesive layer (600). And / or a second additional functional film layer (800) is provided on the side of the lens (100) away from the electrochromic film, and a third optical adhesive layer (900) is provided between the second additional functional film layer (800) and the lens (100) and connected through the third optical adhesive layer (900).

8. The eyeglasses according to claim 7, characterized in that, The first additional functional film layer (700) and the second additional functional film layer (800) are any one of the following: anti-fingerprint layer, anti-scratch layer, anti-fog layer, and anti-reflective layer; Alternatively, the first additional functional film layer (700) and the second additional functional film layer (800) may be a composite layer having one or more functions such as anti-fingerprint, anti-scratch, anti-fog, and anti-reflective properties.

9. The eyeglasses according to claim 5, characterized in that, The lens (100) has a planar or curved structure.

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