Electro-optic device conductive ring

Abstract

An electro-optic device includes a first substrate formed of plastic that has a second surface. A second substrate formed of plastic that has a third surface. The second and third surfaces face each other. A first barrier layer is coupled to the second surface and a second barrier layer is coupled to the third surface. A first conductive layer is coupled to the first barrier layer and a second conductive layer is coupled to the second barrier layer. An electro- optic component is disposed between the first and second conductive layers and configured to switch transmissive states. A band extends at least partially around a perimeter of the electro-optic component. The band is formed of conductive material and in conductive communication with at least one of the first and second conductive layers and configured to be in further conductive communication with a power source of the electro-optic component.

Description

Atty. Docket No. AUTO 05202V1 GEN010 FP1419AWOELECTRO-OPTIC DEVICE CONDUCTIVE RINGCROSS REFERENCE TO RELATED APPLICATION

[0001] This application claims priority under 35 U.S.C. §119(e) upon U.S. Provisional Patent Application No. 63 / 750,842, entitled "ELECTRO-OPTIC DEVICE CONDUCTIVE RING" filed on January 29, 2025, by Mario F. Saenger Nayver et al., the entire disclosure of which is incorporated herein by reference.FIELD OF THE DISCLOSURE

[0002] The present disclosure generally relates to an electro-optic device with an outer band formed of a conductive material used to energize the electro-optic device.SUMMARY OF THE DISCLOSURE

[0003] According to one aspect of the present disclosure, an electro-optic device includes a first substrate formed of plastic that has a first surface and a second surface opposite the first surface. A second substrate formed of plastic that has a third surface and a fourth surface opposite the third surface. The first and second substrates are disposed in a spaced apart relationship to define a space therebetween with the second and third surfaces facing each other and defining a device perimeter. A first barrier layer is coupled to the second surface and a second barrier layer is coupled to the third surface. A first conductive layer is coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter. A second conductive layer is coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter. An electro-opticcomponent is disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage. A band extends from the device peri meter a nd obscures at least a portion of a peri meter of the electro-optic component. The band is formed of conductive material and conductively bridges at least one of the first conductive layer a nd the second conductive layer with a power source of the electro-optic component.

[0004] Accordingto anotheraspect ofthe present disclosure, an electro-opticdevice includes a first substrate formed of plastic that has a first surface and a second surface opposite the first surface. A second substrate formed of plasticthat has a third surface and a fourth surface opposite the third surface. The first and second substrates are disposed in a spaced apartrelationship to define a space therebetween with the second and third surfaces facing each other and defining a device perimeter. A first barrier layer is coupled to the second surface and a second barrier layer is coupled to the third surface. A first conductive layer is coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter. A second conductive layer is coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter. An electro-opticcomponent is disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage. A band extends from and obscures at least a portion of the device perimeter. The band is formed of conductive material and includes a first band portion in conductive communication with the first conductive layer and a second band portion in conductive communication with the second conductive layer. The first and second band portions are configured to form a conductive bridge between the firstand second conduction layersand a power source of the electro-optic component to deliver the applied voltage.

[0005] According to yet another aspect of the present disclosure, an electro-optic device includes a first substrate formed of plastic that has a first surface and a second surface opposite the first surface. A second substrate formed of plasticthat has a third surface and a fourth surface opposite the third surface. The first and second substrates are disposed in a spaced apart relationship to define a space therebetween with the second and third surfaces facing each other and defining a device perimeter. A first barrier layer is coupled to the second surface and a second barrier layer is coupled to the third surface. A first conductive layer is coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter. A second conductive layer is coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter. An electro-optic component is disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage. A band has a lower sheet resistance than the first and second conductive layers. The band extends from the device perimeter and obscures at least a portion of a perimeter of the electro-optic component. The band is formed of conductive material and conductively bridges at least one of the first conductive layer and the second conductive layer with a power source of the electro-optic component.

[0006] The present disclosure generally relates to an electro-optic device with an outer band formed of a conductive material used to energize the electro-optic device. In electro-optic devices, it can be important to prevent the ingress of oxygen, moisture, and other materials from entering and degrading the electroactive components. Barrier layers can be incorporated to limit the ingress. However, depending on the type of materials used, the adhesion between the barrier layers to substratescan be weak. As such, according to some aspects of the present disclosure, the barrier layers are inset from an outerperimeterof the substrates to allow a more robust adhesion between the outer band and the substrate to further limit ingress.

[0007] These and other features, advantages, and objects of the present disclosure will be further understood and appreciated by those skilled in the art by reference to the following specification, claims, and appended drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In the drawings:

[0009] FIG. 1 is a cross-sectional view of an electro-optic device, according to an aspect of the present disclosure;

[0010] FIG. 2A is an electro-optic device with an electro-optic component of a first construction, according to an aspect of the present disclosure;

[0011] FIG. 2B is an electro-optic device with an electro-optic component of a second construction, according to an aspect of the present disclosure;

[0012] FIG. 3A is an electro-opticdevice with a conductive band in a first position, according to an aspect of the present disclosure;

[0013] FIG. 3B is an electro-optic device with a conductive band in a second position, according to an aspect of the present disclosure;

[0014] FIG. 3C is an electro-optic device with a conductive band in a second position, according to an aspect of the present disclosure;

[0015] FIG. 4A is a top plan view of a vehicle incorporating an electro-optic assembly in accordance with the present disclosure;

[0016] FIG. 4B is an upper perspective view of an aircraft incorporating an electro-optic assembly in accordance with the present disclosure;

[0017] FIG.4C is a frontelevational viewof a buildingincorporatingan electro-opticassembly in accordance with the present disclosure; and

[0018] FIG.4D isan upper perspective view of an eyewearassembly incorporatingan electrooptic assembly in accordance with the present disclosure.DETAILED DESCRIPTION

[0019] The present illustrated embodiments reside primarily in combinations of method steps and apparatus components related to an electro-optic device with an outer band formed of a conductive material used to energize the electro -optic device. Accordingly, the apparatus components and method steps have been represented, where appropriate, by conventional symbols in the drawings, showingonly those specificdetails that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary ski II in the art having the benefit of the description herein. Further, like numerals in the description and drawings represent like elements.

[0020] For purposes of description herein, the terms "upper," "lower," "right," "left," "rear," "front," "vertical," "horizontal," and derivatives thereof, shall relate to the disclosure as oriented in FIG. 1. Unless stated otherwise, the term "front" shall refer to the surface of the device closer to an intended viewer of the device, and the term "rear" shall refer to the surface of the device further from the intended viewer of the device. However, it is to be understood that the disclosure may assume various alternative orientations, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification, are simply exemplary embodimentsof the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.

[0021] The terms "including," "comprises," "comprising," or any other variation thereof, are intended to covera non-exclusive inclusion, such thata process, method, article, orapparatus that comprises a list of elements does not include onlythose elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element preceded by "comprises a . . . " does not, without more constraints, preclude theexistence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0022] Referring initia lly to FIG.1, reference numeral 10 generally designatesan electro-optic device. The electro-optic device 10 includes a first substrate 12 having a first surface 14 and a second surface 16 opposite the first surface 14. A second substrate 18 includes a third surface 20 and a fourth surface 22 opposite the third surface 20. The first and second substrates 12, 18 are disposed in a spaced apart relationship to define a space 23 therebetween with the second and third surfaces 16, 20 facing each other and defining a device perimeter. A first barrier layer 24 is coupled to the second surface 16 and a second barrier layer 26 is coupled to the third surface 20. A first conductive layer 28 is coupled to the first barrier layer 24 opposite the first substrate 12, the first conductive layer 28 is spaced inwardly from the device perimeter. A second conductive layer 30 is coupled to the second barrier layer 26 opposite the second first substrate 12, the second conductive layer 30 is spaced inwardly from the device perimeter. An electro-optic component 32 (e.g., an electrochromic component) is disposed between the first and second conductive layers 28, 30 and configured to switch transmissive states when exposed to an applied voltage. A band 34 extends from the device perimeter and may obscure a perimeter 36 of the electro-optic component 32 and / or a perimeter ofthe electro-optic device 10 (i.e., the device perimeter or active perimeter). The band 34 is formed of conductive material (e.g., a metal) and conductively bridges at least one ofthe first conductive layer 28 and the second conductive layer 30 with a power source 38 of the electro-optic component 32.

[0023] With continued reference to FIG. 1, electro-optic assemblies sometimes employ an obscuring layer, such as a glass frit or chrome ring to obscure certain internal portions from consumer use. The band 34 as defined herein, is an obscuring layer that also serves the function of conductively bridgingthe electro-opticcomponent 32to the power source 38. In some implementations, the band 34 provides substantially all of the applied voltage to the electro-optic component 32 and, more particularly, to the first conductive layer 28, the second conductive layer 30, or both the first and second conductive layers 28, 30. In this manner, the first and second conductive layers 28, 30 can be inboard from the device perimeter, while the band 34 conductively couples the external power source 38 from the device perimeterto the first and second conductive layers 28, 30. In some embodiments, the band 34 is in direct contact with one or both ofthe first and second conductive layers 28, 30and provides applied voltage without any conductive intermediaries between the band 34 and one or both of the first and second conductive layers 28, 30. For example, the band 34 may include a first band portion 40 extending at least partially over and in conductive communication with the first conductive layer 28 and a second band portion 42 at least partially over and in conductive communication with the second conductive layer 30. The first band portion 40 and the second band portion 42 may be configured to deliverthe applied voltage between the first conductive layer 28 and the second conductive layer 30. The first band portion 40 and the second band portion 42 may be conductively isolated from one another except for current through the electro-optic component 32. The first band portion 40, the second band portion 42, or both the first and second band portions 40, 42 may be reflective (e.g., similar to a chrome ring) or absorbative.

[0024] The band 34 (e.g., the first and second band portions 40, 42) and the first and second conductive layers 28, 30 each have a sheet resistance. In some implementations, the sheet resistance of the band 34 is lowerthan the sheet resistance of the first and second conductive layers 28, 30. For example, the sheet resistance of the band 34 may have a lower sheet resistance than the first and second conductive layers 28, 30 by a ratio of about 1:10 or greater, about 1:20 or greater, about 1:30 or greater, about 1:40 or greater, about 1:50 or greater, about 1:60 or greater, about 1:70 or greater, about 1:80 or greater, about 1:90 or greater, about 1:100 or greater, between about 1:20 to 1:50, or between about 1:50 and 1:100. In some implementationsthe sheet resistance of the band 34 may be less than about 1 ohm / sq, less than about 0.5 ohm / sq, less than about 0.4 ohm / sq, less than about 0.3 ohm / sq, less than about 0.2 ohm / sq, or about 0.1 ohm / sq. In this manner, the band 34 can serve dual functionality as an obscuring layer and an electrical bus-type conductor to the first and second conductive layers 28, 30.

[0025] The first conductive layer 28 and the second conductive layer 30 may be formed by electrically conductive transparent materials, including, but not limited to, a transparent conducting film and / oroxide (e.g., indium tin oxide (ITO), F:SnO2, ZnO, IZO), insulator-metal- insulator ("IMI") structures, carbon (graphene and / orgraphite) and / or a conductive metal mesh (e.g., nanowires). The first and second conductive layers 28, 30 may extend to the perimeter 36 of the electro-optic component 32. The band 34 (e.g., one or both of the first and second band portions 40, 42) may extend along (e.g., an inner edge that extends to or overlaps with) substantially the entire perimeter 36 of the electro-optic component 32 and / oran outer perimeterof the first and second conductive layers 28, 30. In otherwords, in some embodiments, the outer perimeter 36 may be aligned with or otherwise defined by an inner edge of the first and second band portions 40, 42. More particularly, the band 34 (e.g., one or both of the first and second band portions 40, 42) may extend around, cover, and / or obscure at least 80% of the entire perimeter 36 and / or the outer perimeter of the first and second conductive layers 28, 30, at least 80% of the entire perimeter 36 and / or the outer perimeter of the first and second conductive layers 28, 30, at least 85% of the entire perimeter 36 and / orthe outer perimeterof the first and second conductive layers 28, 30, at least 90% of the entire perimeter 36 and / or the outer perimeter of the first and second conductive layers 28, 30, at least 95% of the entire perimeter 36 and / orthe outer perimeter of the first and second conductive layers 28, 30, at least 98% of the entire perimeter 36 and / orthe outer perimeterof the firstand second conductive layers 28, 30, orthe entire perimeter36 and / or the outer perimeter of the first and second conductive layers 28, 30. In this manner, the band 34 (e.g., one or both of the first and second band portions 40, 42) may be fully or primarily ring-shaped around the perimeter 36 of the electro-optic component 32. However, it should be appreciated thatthe band 34 (e.g., one or both of the first and second band portions 40, 42) may cover less of the perimeter 36 and / orthe outer perimeterof the first and second conductive layers 28, 30 and may be segmented into several conductive portionsaroundthe peri meter 36 without departing from the scope of the subject disclosure. The first and second band portions 40, 42 may be in substantial overlapping contact with the first and second conductive layers 28, 30. More particularly, the first and second band portions 40, 42 may extendat Ieast2 mm pastthe outer perimeter of the conductive layers 28, 30. For example, at least 3 mm, at least 4 mm, at least 5 mm, at least 7 mm, at least 1 cm, at least 1.5 cm, at least 2 cm, or in a range between any of the above stated values. The first and second band portions 40, 42 may extend to, along, or past an outer perimeter of the substrates 12, 18 while the electro-optic component 32 is inset therefrom.

[0026] With continued reference to FIG. 1, the electro-opticdevice 10 may furtherinclude a seal 44 that is located between the first and second substrates 12, 18 around the periphery of the electro-optic component 32. Generally speaking, the outer perimeter of the first and second conductive layers 28, 30 may not extend past the seal 44 and may terminate before or, alternatively, in alignment with the seal 44. The seal 44 may be utilized to retain the electro-opticcomponent 32 between the first and second substrates 12, 18 and also protectthe electro-optic component 32 from environmental factors that could degrade the operational life of the electro-opticcomponent 32. The band 34(e.g., one or both ofthe first and second band portions 40, 42) may cover and obscure at least a portion of the seal 44. More particularly, the band34(e.g., one or both ofthe firstand second band portions 40, 42) may cover the seal 44 from the direction of one or both the first and second substrates 12, 18 in an amount as previously described in relation to the entire perimeter 36. In this manner, the band 34 (e.g., one or both ofthe firstand second band portions40, 42) may substantially cover and prevent the sea 144 from being visible to an end consumer viewing the electro -optic device 10 from the first surface 14, the fourth surface 22, or both the third and the fourth surfaces 20, 22. The barrier layers 24, 26 may be utilized to protect the first and second substates 12, 18 from constituents of the electro-optic component 32. More particularly, electro-optic components 32 of various constructions may include constituents that, if directly exposed to plastic (e.g., the first and second substrates 12, 18) can structurally degrade the plastic. Likewise, the barrier layers 24, 26 may protect the electro-optic component 32 from oxygen, water, and other particulates that may degrade the operational life ofthe electro-opticcomponent 32 and form harmful combinations with the constituents ofthe electro-opticcomponent 32. The first barrier layer 24 and the second barrier layer 26 may be formed, for example, of acrylic, ceramic, the like, and / or combinations thereof.

[0027] With reference now to FIGS. 2A and 2B, the electro-optic component 32 depicted in FIG. 1 may have a variety of more specific constructions. The term "electro-optic" and "electroactive" as used herein, refers to a material that can undergo a modification in its oxidation state upon exposure to a particular electrical potential difference. The term "electrochromic," as used herein, refers to a material that can exhibit a change in its extinction coefficient at one or more wavelengths upon exposure to a particular electrical potential difference. In this manner, it should be appreciated that the electro-optic component 32 may have a variety of constructions, including gel, liquids, solid states, etc., other than those shown in FIGS. 2A and 2B without departing from the scope of the subject disclosure. The electro-opticcomponents in FIGS. 2A and 2B may be electro-active or, more specifically, electrochromic. In some embodiments, a reflective (e.g., a mirrorfinish or layer) or transreflective layer (e.g., a liquid crystal device and a reflective polarizer) is located between the electro-optic component 32 and the fourth surface 22 such that increasing the transmissive state increases the amount of reflected light from the transreflective layer.

[0028] FIG. 2A depicts a solution-phase electro-optic component 32Athat includes a solutionphase, electro-optic medium 46 disposed between the first conductive layer 28 and the second conductive layer 30. The electro-optic medium 46 may, for example, be a gel containing at least one solvent, at least one anodic material, and at least one cathodic material. More particularly, the electro-optic medium 46 may be described as a material that can exhibit a change in its extinction coefficient at one or more wavelengths upon exposure to a particular electrical potential difference. The electro-optic medium 46, as described herein, may include materia Is whose color or opacity is affected by an electrical current, such that when an electrical field is applied to the material, the color or opacity changes from a first state to a second state (e.g., the inactivated and activated states). Thus, the electro-optic medium 46 can exhibit a change in transparency as a result of electrochemical oxidation and reduction reactions that occur between electroactive components (e.g., the anodic components and the cathodic components), in which at least one of the electroactive components is also electro-optic. The change in transparency may be described as switchable between a substantially transparentstate and a substantially darkened state. In otherwords, when a sufficient electrical potential difference is applied across electrodes (e.g., the first and second conductive layers 28, 30), the electro-optic medium 46 can shift from a substantially clear state (e.g., a high transmission state, such as the inactivated state) to a substantially dark or darkened state (e.g., a low transmission state, such as the activated state), as well as intermediate states thereto, in the event that one or more of the anodic and the cathodic components are oxidized and reduced, respectively. Specifically, the anodic components are oxidized by donating electrons to the anode and the cathodic components are reduced by accepting electrons from the cathode. Accordingly, the anodic compound may refer to a compound that can reversibly lose an electron(s) upon activation and the cathodic compound, as used herein, may refer to a compound that can reversiblygain an electron(s).

[0029] With reference now to FIG. 2B, an electro-optic component 32B of a second construction includes a cathodic film 48 coupled to the first barrier layer 24, an anodic film 50 coupled to the second barrier layer 26, and an electrolyte, such as a thin film electrolyte 52 ("TFE") located between the cathodicfilm 48 and the anodicfilm 50. The anodic components of anodicfilm 50 may include triphenylamine (TPA) derivatives. For example, the anodic components may include one or a blend of type A and / ortype B polyamide polymers. More particularly, type A may be defined herein as N,N'-Bis(4-aminophenyl)-N,N'-bis(4-methoxyphenyl)-!, 4-benzenediamine ("TPPA-PA") and type B may be defined as N,N'-Bis(4- aminophenyl)-N,N'-bis(4-methoxyphenyl)-4',4-biphenylenediamine ("TPBA-PA"). In some embodiments, the cathodic film 48 may include one or more cathodic components or moieties, which can include a reducible compound. Non-limiting examples of cathodic components include thiophene, for example, ~200-300 nm, Polymerized Thiophene of ProDOT-Me2. The TFE 52 may include a solvent and the solvent may include, for example, salt (e.g., an ionic conductive additive), a polymer, and polycarbonate (e.g., a plasticizer for the polymer and a solvent for the salt).

[0030] With reference now to FIGS. 3A-3C, positioning of the band 34 (e.g., one or both of the first and second band portions 40, 42) within the stack of the electro-optic device 10 may be varied. While the electro-optic device 10 in FIGS. 3A-3C depict the electro-optic component32B from FIG. 2B, it should beappreciatedthatthe electro-opticcomponents of the other embodiments may be utilized underthe same principles (e.g., by removal of the cathodicfilm 48 and the anodicfilm 50 and replacingthe electrolyte with the electro -optic medium 46).

[0031] FIG. 3A shows a first positioning of the first and second band portions 40, 42. In the first position, the first band portion 40 extends over the first conductive layer 28, an outer edge of the first barrier layer 24, and over at least part of the second surface 16. The second band portion 42, likewise, extends over the second conductive layer 30, an outer edge of the second barrier layer 26, and over at least part of the third surface 20. In this manner, the barrier layers 24, 26 and the conductive layers 28, 30 may be inset from the outer edge of the substrates 12, 18. The overlapping between the first and second band portions 40, 42 and the conductive layers 28, 30 permits the band portions 40, 42 to conductively bridge the power source 38 to the conductive layers 28, 30. Further adhesion between the conductive layers 28, 30 and the barrier layers 24, 26 may be proneto delamination, resultingin oxygen ingressthat is prevented bythe more robust adhesion between the band portions 40, 42 and the substrates 12, 18 that is in overlapping with the seal 44.

[0032] With reference nowto FIG. 3B, a second position ofthe first and second band portions 40, 42 is depicted. In the second position, the first band portion 40 extends over the first conductive layer 28, an outer edge of the first conductive layer 28, and over at least part of the first barrier layer 24. The second band portion 42, likewise, extends over the second conductive layer 30, an outer edge of the second conductive layer 30, and over at least partof the second barrier layer 26. In some implementations, the band portions 40, 42 in the second position may also be, at least in part, adhered to the substrates 12, 18 (e.g., edges of the substrates or the second and third surfaces 16, 20).

[0033] FIG. 3Cshowsa third position of the first and second band portions 40, 42. Inthe third position, the first band portion 40 extends over the first conductive layer 28, an outer edge of the first barrier layer 24, and over at least part of the second surface 16. In addition, the cathodicfilm48or, more generally, a first electrode layer extends across (e.g., in contact with) a bottom surface of the first band portion 40, such that the first band portion 40 is sandwiched between the first conductive layer 28 and the cathodicfilm 48. The second band portion 42, likewise, extends over the second conductive layer 30, an outer edge of the second barrier layer 26, and over at least part of the third surface 20. In addition, the a nodicfi Im 50 or, more generally, a second electrode layerextends across (e.g., in contact with) a bottom surface of the second band portion 42, such that the second band portion 42 is sandwiched between the second conductive layer 30 and the anodicfilm 50. In some implementations, the band portions 40, 42 may be sandwiched between the conductive layers 28, 30 and the barrier layers 24, 26. It should be appreciated that, in some embodiments, one of the first and second band portions40, 42 may have one of the positions in FIGS. 3A-3C and the other of the first and second band portions 40, 42 may have a different one of positions in FIG. 3A-3C.

[0034] With reference now to FIGS. 4A-4D, the electro-optic device 10 may be configured as an electro-optic device that is switchable between a substantially transmissive state and a substantially darkened state. In other embodiments, the electro-optic device 10 is configured as an electro-optic device that is switchable between a high reflectance state and a low reflectance state. Various embodiments of electro-opticdevice 10 may be incorporated with one or more structures 54A-54C. For example, FIG. 4A illustrates an automobile 54A employing the electro-optic device 10, for example, with an interior rearview mirror, a sunroof, a windshield, a side window, a heads-up display, and / or other interior vehicle locations that display one or more aspects of the electro-optic device 10. The automobile 54A may include a commercial vehicle, an emergency vehicle, a residential vehicle, or the like. FIG. 4B illustratesan aircraft 54Bemployingthe electro-optic device 10 (e.g., a frontwindow, side window, heads-up display). FIG. 4C illustrates a building 54C employing electro-optic device 10 (e.g., a window). The building 54C may be a residential building, a commercial building, and / orthe like. Generally speaking, the electro-opticdevice 10 may be incorporatedinto any environment where it is beneficial to change the state of a window, mirror, and / or display. FIG.4D il lustrates eyewear 54D employing electro-optic device 10. For exam pie, the eyewear may be glass or plastic with dimming functionality a nd include augmented reality or virtual reality. Generally speaking, other structures, such as a heads-up display or other environments wherein electro-optic effects are beneficial, may employ the electro-optic device 10 with dimming functionality or augmented reality. Generally speaking, other structures, such as a heads-up display or other environments wherein a light dimming device with low reflectance is beneficial, may employ the electro -optic device 10.

[0035] The disclosure herein is further summarized in the following paragraphs a nd is further characterized by combinations of any and all of the various aspects described therein.

[0036] According to one aspect of the present disclosure, an electro-optic device includes a first substrate formed of plastic that has a first surface and a second surface opposite the first surface. A second substrate formed of plastic that has a third surface and a fourth surface opposite the third surface. The first and second substrates are disposed in a spaced apart relationship to define a space therebetween with the second and third surfaces facing each other and defining a device perimeter. A first barrier layer is coupled to the second surface and a second barrier layer is coupled to the third surface. A first conductive layer is coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter. A second conductive layer is coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter. An electro-optic component is disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage. A band extendsfrom the device perimeterand obscures at least a portion of a perimeterof the electro-optic component. The band is formed of conductive material and conductively bridges at least one of the first conductive layer and the second conductive layer with a power source of the electro-optic component.

[0037] According to another aspect, a seal is located between the first and second substrates around the periphery of the electro-optic component and the band covers and obscures at least a portion of the seal.

[0038] According to yet another aspect, the band covers and obscures substantially an entirety of the seal from the first surface and is reflective towards the first surface.

[0039] According to still another aspect, the band includes a first band portion extending at least partially over and in conductive communication with the first conductive layer and a second band portion at least partially overand in conductive communication with the second conductive layer, the first band portion and the second band portion configured to deliver the applied voltage between the first conduction layer and the second conduction layer.

[0040] According to yet another aspect, the first band portion covers and obscures substantially the entirety of the seal from the first surface and thesecond band portion covers and substantially obscures the entirety of the seal from the fourth surface.

[0041] According to another aspect, the electro-optic component includes a solution phase electro-optic medium.

[0042] According to yet another aspect, the electro-optic component includes a cathodic film coupled to the first barrier layer, an anodic film coupled to the second barrier layer, and a thin film electrolyte located between the cathodic film and the anodic film.

[0043] According to still another aspect, the first band portion extends over the first conductive layer, an outer edge of the first barrier layer, and over at least part of the second surface.

[0044] According to still yet another aspect, thesecond band portion extends over the second conductive layer, an outeredge of the second barrier layer, and over at least part of the third surface.

[0045] According to another aspect, the first band portion is located between the cathodic film and the first conductive layer and thesecond band portion is located between the anodic film and the second conductive layer.

[0046] According to another aspect, the first band portion extends over the first conductive layer, an outer edge of the first conduction layer, and over at least part of the first barrier layer.

[0047] According to yet another aspect, the second band portion extends over the second conductive layer, an outer edge of the second conduction layer, and over at least part of the second barrier layer.

[0048] Accordingto anotheraspect ofthe present disclosure, an electro-opticdevice includes a first substrate formed of plastic that has a first surface and a second surface opposite the first surface. A second substrate formed of plasticthat has a third surface and a fourth surface opposite the third surface. The first and second substrates are disposed in a spaced apartrelationship to define a space therebetween with the second and third surfaces facing each other and defining a device perimeter. A first barrier layer is coupled to the second surface and a second barrier layer is coupled to the third surface. A first conductive layer is coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter. A second conductive layer is coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter. An electro-optic component is disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage. A band extends from and obscures at least a portion of the device perimeter. The band is formed of conductive material and includes a first band portion in conductive communication with the first conductive layer and a second band portion in conductive communication with the second conductive layer. The first and second band portions are configured to form a conductive bridge between the firstand second conduction layersand a power source of the electro-optic component to deliver the applied voltage.

[0049] According to another aspect, the first band portion and the second band portion are rings extending around and obscuring a perimeter of the electro-optic component.

[0050] According to yet another aspect, the first band portion is reflective towards the first surface and the second band portion is reflective towards the fourth surface.

[0051] According to still another aspect, the electro-optic component includes a solution phase electro-optic medium.

[0052] According to another aspect, the electro-optic component includes a cathodic film coupled to the first barrier layer, an anodic film coupled to the second barrier layer, and a thin film electrolyte located between the cathodic film and the anodic film.

[0053] According to yet another aspect, the first band portion extends over the first conductive layer, an outer edge of the first barrier layer, and over at least part of the second surface, and the second band portion extends over the second conductive layer, an outer edge of the second barrier layer, and over at least part of the third surface.

[0054] According to still another aspect, the first band portion extends over the first conductive layer, an outer edge of the first conduction layer, and over at least part of the first barrier layer, and the second band portion extends overthe second conductive layer, an outer edge of the second conduction layer, and over at least part of the second barrier layer.

[0055] According to another aspect, the first band portion and the second band portion do not overlap the perimeter of the electro-optic component.

[0056] According to yet another aspect of the present disclosure, an electro-optic device includes a first substrate formed of plastic that has a first surface and a second surface opposite the first surface. A second substrate formed of plasticthat has a third surface and a fourth surface opposite the third surface. The first and second substrates are disposed in a spaced apart relationship to define a space therebetween with the second and third surfaces facing each other and defining a device perimeter. A first barrier layer is coupled to the second surface and a second barrier layer is coupled to the third surface. A first conductive layer is coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter. A second conductive layer is coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter. An electro-optic component is disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage. A band has a lower sheet resistance than the first and second conductive layers. The band extends from the device perimeter and obscures at least a portion of a perimeter of the electro-optic component. The band is formed of conductive material and conductively bridges at least one of the first conductive layer and the second conductive layer with a power source of the electro-optic component.

[0057] It will be understood by one having ordinary skill in the art that construction of the described disclosure and other components is not limited to any specific material. Other exemplary embodiments of the disclosure disclosed herein may be formed from a wide variety of materials, unless described otherwise herein.

[0058] For purposes of this disclosure, the term "coupled" (in all of its forms, couple, coupling, coupled, etc.) generally means the joining of two components (electrical or mechanical) directly or indirectly to one another. Such joining may be stationary in nature or movable in nature. Such joining may be achieved with the two components (electrical or mechanical) and any additional intermediate members being integrally formed as a single unitary body with one another or with the two components. Such joining may be permanent in nature or may be removable or releasable in nature unless otherwise stated.

[0059] As used herein, the term "about" means that amounts, sizes, formulations, parameters, and other quantities a nd characteristics are not and need not be exact, but maybe approximate and / or largerorsmaller, as desired, reflectingtolerances, conversion factors, rounding off, measurement errorand the like, and otherfa ctors known to those of skill in the art. When the term "about" is used in describing a value or an end-point of a range, the disclosure should be understood to include the specific value or end-point referred to. Whether or not a numerical value or end-point of a range in the specification recites "about," the numerical value or end-point of a range is intended to include two embodiments: one modified by "a bout," a nd one not modified by "about." It will be further understood that the end-points of each of the ranges are significant both in relation to the otherend-point, and independently of the other end-point.

[0060] The terms "substantial," "substantially," and variations thereof as used herein are intended to note that a described feature is equal or approximately equal to a value or description. For exam pie, a "substantially planar" surface is intended to denote a surface that is planar or approximately planar. Moreover, "substantially" is intended to denote that two values are equal or approximately equal. In some embodiments, "substantially" may denote values within about 10%of each other, such aswithin about5%ofeach other, orwithin about 2% of each other.

[0061] It is also important to note that the construction and arrangement of the elements of the disclosure, as shown in the exemplary embodiments, is illustrative only. Although only a few embodiments of the present innovations have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departingfrom the novel teachings and advantages of the subject matter recited. For example, elements shown as integrally formed may be constructed of multiple parts, or elements shown as multiple parts may be integrally formed, the operation of the interfaces may be reversed or otherwise varied, the length or width of the structures and / or members or connectors or other elements of the system may be varied, and the nature or numberof adjustment positions provided between the elements may be varied. It should be noted that the elements and / orassembliesof the system may be constructed from any of a wide variety of materials that provide sufficient strength or durability, in any of a wide variety of colors, textures, and combinations. Accordingly, all such modifications are intended to be included within the scope of thepresent innovations. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the desired and other exemplary embodiments without departing from the spirit of the present innovations.

[0062] It will be understood thatanydescribed processesorstepswithindescribed processes may be combined with other disclosed processes or steps to form structures within the scope of the present disclosure. The exemplary structures and processes disclosed herein are for illustrative purposes and are not to be construed as limiting.

[0063] It is also to be understood that variations and modifications can be made on the aforementioned structures and methods without departi ng from the concepts of the present disclosure, and further it is to be understood that such concepts are intended to be covered by the following claims unless these claims by their language expressly state otherwise.

Claims

What is claimed is:

1. An electro-optic device comprising:a first substrate formed of plastic and having a first surface and a second surface opposite the first surface;a second substrate formed of plastic and having a third surface and a fourth surface opposite the third surface, the first and second substrates disposed in a spaced apart relationship to define a space therebetween, the second and third surfaces facing each other and defining a device perimeter;a first barrier layer coupled to the second surface;a second barrier layer coupled to the third surface;a first conductive layer coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter;a second conductive layer coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter;an electro-optic component disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage; and a band extending from the device perimeter and obscuring at least a portion of a perimeter of the electro-optic component, the band formed of conductive material and conductively bridging at least one of the first conductive layer and the second conductive layer with a power source of the electro-optic component.

2. The electro-optic device of claim 1, wherein a seal is located between the first and second substratesaroundthe periphery ofthe electro-opticcomponent and the band covers and obscures at least a portion of the seal.

3. The electro-optic device of claim 2, wherein the band covers and obscures substantially an entirety of the seal from the first surface and is reflective towards the first surface.

4. The electro-optic device as in one of claims 1-3, wherein the band includesa first band portion extending at least partially over and in conductive communication with the firstconductive layer and a second band portion at least partially over and in conductive communication with the second conductive layer, the first band portion and the second band portion configured to deliverthe applied voltage between the first conduction layerand the second conduction layer.

5. The electro-optic device of claim 4, wherein the first band portion covers and obscures substantially the entirety of the seal from the first surface and thesecond band portion covers and substantially obscures the entirety of the seal from the fourth surface.

6. The electro-optic device of claim 4, wherein the electro-optic component includes a solution phase electro-optic medium.

7. The electro-optic device as in claim 4, wherein the electro-optic component comprises:a cathodic film coupled to the first barrier layer;an anodic film coupled to the second barrier layer; anda thin film electrolyte located between the cathodic film and the anodic film.

8. The electro-optic device of claim 4, wherein the first band portion extends over the first conductive layer, an outer edge of the first barrier layer, and over at least part of the second surface.

9. The electro-optic device of claim 8, wherein the second band portion extends over the second conductive layer, an outer edge of the second barrier layer, and over at least part of the third surface.

10. The electro-optic device as in claim 9, wherein the first band portion is located between the cathodic film and the first conductive layer and the second band portion is located between the anodic film and the second conductive layer.

11. The electro-optic device of claim 4, wherein the first band portion extends over the first conductive layer, an outer edge of the first conduction layer, and over at least part of the first barrier layer.

12. The electro-optic device of claim 11, wherein the second band portion extends over the second conductive layer, an outer edge of the second conduction layer, and overat least part of the second barrier layer.

13. An electro-optic device comprising:a first substrate formed of plastic and having a first surface and a second surface opposite the first surface;a second substrate formed of plastic and having a third surface and a fourth surface opposite the third surface, the first and second substrates disposed in a spaced apart relationship to define a space therebetween, the second and third surfaces facing each other and defining a device perimeter;a first barrier layer coupled to the second surface;a second barrier layer coupled to the third surface;a first conductive layer coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter;a second conductive layer coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter;an electro-optic component disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage; and a band extending from and obscuring at least a portion of the device perimeter, the band formed of conductive material and including a first band portion in conductive communication with the first conductive layer and a second band portion in conductive communication with the second conductive layer, the first and second band portions configured to form a conductive bridge between the first and second conduction layers and a power source of the electro-optic component to deliver the applied voltage.

14. The electro-optic device of claim 13, wherein the first band portion and the second band portion are rings extending around and obscuring a perimeter of the electro-optic component.

15. The electro-optic device as in claim 13 or claim 14, wherein the first band portion is reflective towards the first surface and the second band portion is reflective towards the fourth surface.

16. The electro-optic device as in one of claims 13-15, wherein the electro-optic component comprises:a cathodic film coupled to the first barrier layer;an anodic film coupled to the second barrier layer; anda thin film electrolyte located between the cathodic film and the anodic film.

17. The electro-optic device as in one of claims 13 or 14, wherein the first band portion extends over the first conductive layer, an outer edge of the first barrier layer, and over at least part of the second surface, and wherein the second band portion extends over the second conductive layer, an outer edge of the second barrier layer, and over at least part of the third surface.

18. The electro-optic device as in one of claims 13 or 14, wherein the first band portion extends over the first conductive layer, an outer edge of the first conduction layer, and over at least part of the first barrier layer, and wherein the second band portion extends overthe second conductive layer, an outer edge of the second conduction layer, and overat least part of the second barrier layer.

19. The electro-optic device of claim 13, wherein the first band portion and the second band portion do not overlap the perimeter of the electro-optic component.

20. An electro-optic device comprising:a first substrate formed of plastic and having a first surface and a second surface opposite the first surface;a second substrate formed of plastic and having a third surface and a fourth surface opposite the third surface, the first and second substrates disposed in a spaced apart relationship to define a space therebetween, the second and third surfaces facing each other and defining a device perimeter;a first barrier layer coupled to the second surface;a second barrier layer coupled to the third surface;a first conductive layer coupled to the first barrier layer opposite the first substrate, the first conductive layer spaced inwardly from the device perimeter;a second conductive layer coupled to the second barrier layer opposite the second substrate, the second conductive layer spaced inwardly from the device perimeter;an electro-opticcomponent disposed between the first and second conductive layers and configured to switch transmissive states when exposed to an applied voltage; and a band having a lower sheet resistance than the first and second conductive layers, the band extendi ng from the device peri meter a nd obscuring at least a portion of a perimeter of the electro-optic component, the band formed of conductive material and conductively bridging at least one of the first conductive layer and the second conductive layer with a power source of the electro-optic component.

Images