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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0809539 (2015-07-27) |
등록번호 | US-9341914 (2016-05-17) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 3 인용 특허 : 1305 |
A variable reflectance mirror reflective element for a vehicular exterior rearview mirror assembly includes a front substrate and a rear substrate, with an electrochromic medium disposed therebetween. A mirror reflector is disposed at a third surface of the rear substrate and includes a stack of thi
A variable reflectance mirror reflective element for a vehicular exterior rearview mirror assembly includes a front substrate and a rear substrate, with an electrochromic medium disposed therebetween. A mirror reflector is disposed at a third surface of the rear substrate and includes a stack of thin films and has a sheet resistance of less than about 5 ohms per square. Light that reflects off of the mirror reflector and passes through the electrochromic medium and the front substrate exhibits a substantially non-spectrally selective reflectance characteristic to a person viewing the exterior mirror reflective element when no voltage is applied to the electrochromic medium. At least a portion of the mirror reflector extends out under the seal towards a perimeter edge of the rear substrate. An electrical connection, which may include a conductive epoxy, is made to the portion of the mirror reflector outboard of the perimeter seal.
1. A variable reflectance exterior mirror reflective element suitable for use in a vehicular exterior rearview mirror assembly, said exterior mirror reflective element comprising: a front substrate and a rear substrate;an electrochromic medium disposed between said front and rear substrates;wherein
1. A variable reflectance exterior mirror reflective element suitable for use in a vehicular exterior rearview mirror assembly, said exterior mirror reflective element comprising: a front substrate and a rear substrate;an electrochromic medium disposed between said front and rear substrates;wherein said front substrate has a first surface and a second surface;said second surface of said front substrate having a transparent electrically conductive layer disposed thereat;wherein said rear substrate has a third surface and a fourth surface;a mirror reflector disposed at said third surface of said rear substrate;wherein said mirror reflector comprises a stack of thin films comprising at least two thin films, and wherein said stack of thin films comprises at least one metal thin film;wherein a first thin film of said stack of thin films comprises a material that has a specific resistivity of less than about 1×10−3 ohm·cm, and wherein a second thin film of said stack of thin films comprises a material that has a specific resistivity of less than about 1×10−3 ohm·cm;wherein said mirror reflector has a sheet resistance of less than about 5 ohms per square;wherein said electrochromic medium is disposed in an interpane cavity established between said third surface of said rear substrate and said second surface of said front substrate and is bounded by a perimeter seal;wherein no part of said rear substrate extends beyond any part of said front substrate;wherein a perimeter layer is disposed at said second surface of said front substrate proximate a perimeter edge of said front substrate;wherein said perimeter layer generally conceals said perimeter seal from view by a person viewing through said front substrate;wherein light that reflects off of said mirror reflector and passes through said electrochromic medium and said front substrate exhibits a substantially non-spectrally selective reflectance characteristic to a person viewing said exterior mirror reflective element when no voltage is applied to said electrochromic medium;wherein said perimeter layer comprises a reflective perimeter layer;wherein said perimeter layer comprises an electrically conductive perimeter layer;wherein at least a portion of said mirror reflector extends out under said perimeter seal towards a perimeter edge of said rear substrate;wherein an electrical connection is made to said portion of said mirror reflector outboard of said perimeter seal;wherein said electrical connection comprises a conductive epoxy; andwherein said perimeter seal is at least partially visible to a person viewing through said rear substrate. 2. The exterior mirror reflective element of claim 1, wherein said exterior mirror reflective element is suitable for use in a driver side vehicular exterior rearview mirror assembly, and wherein said exterior mirror reflective element comprises aspheric substrates and has a more curved outboard region and a less curved inboard region, and wherein said outboard region is further from a driver of a vehicle equipped with said exterior mirror reflective element and said inboard region is closer to the driver of the equipped vehicle when said exterior mirror reflective element is used in a driver side vehicular exterior rearview mirror assembly attached at a driver side of the equipped vehicle. 3. The exterior mirror reflective element of claim 2, wherein a demarcation is provided between said more curved outboard region and said less curved inboard region of said exterior mirror reflective element. 4. The exterior mirror reflective element of claim 3, wherein said demarcation comprises one of a continuous line, closely interspaced dots, dashes and spots. 5. The exterior mirror reflective element of claim 1, wherein said exterior mirror reflective element comprises a convex curved exterior mirror reflective element, and wherein said exterior mirror reflective element is suitable for use in a passenger side vehicular exterior rearview mirror assembly, and wherein said front substrate comprises a front glass substrate and said rear substrate comprises a rear glass substrate. 6. The exterior mirror reflective element of claim 1, wherein said at least a portion of said mirror reflector that extends out under said seal towards a perimeter edge of said rear substrate extends towards the perimeter edge of said rear substrate along a length dimension of said exterior mirror reflective element. 7. The exterior mirror reflective element of claim 1, wherein said front and rear substrates are joined by said perimeter seal as uncut sheets of glass, and wherein said front and rear substrates are cut into mirror shapes after said perimeter seal is disposed therebetween. 8. The exterior mirror reflective element of claim 1, wherein said mirror reflector provides at least about 60 percent photopic reflectance for light incident thereon measured in accordance with Society of Automotive Engineers test procedure SAE J964a. 9. The exterior mirror reflective element of claim 1, wherein a display is disposed proximate said fourth surface of said rear substrate of said mirror reflective element, and wherein said display, at least when operated, is viewable to a person viewing through said front substrate of said mirror reflective element. 10. The exterior mirror reflective element of claim 9, wherein said mirror reflective element is substantially non-transmissive of light other than where said display is disposed. 11. The exterior mirror reflective element of claim 9 wherein said display comprises at least one light emitting diode. 12. The exterior mirror reflective element of claim 11, wherein said display is configured to be operated responsive to a blind spot detector of a vehicle equipped with an exterior rearview mirror assembly that incorporates said mirror reflective element. 13. A variable reflectance exterior mirror reflective element suitable for use in a vehicular exterior rearview mirror assembly, said exterior mirror reflective element comprising: a front substrate and a rear substrate;an electrochromic medium disposed between said front and rear substrates;wherein said front substrate has a first surface and a second surface;said second surface of said front substrate having a transparent electrically conductive layer disposed thereat;wherein said rear substrate has a third surface and a fourth surface;a mirror reflector disposed at a surface of said rear substrate;wherein said mirror reflector comprises a stack of thin films comprising at least two thin films, and wherein said stack of thin films comprises at least one metal thin film;wherein a first thin film of said stack of thin films comprises a material that has a specific resistivity of less than about 1×10−3 ohm·cm, and wherein a second thin film of said stack of thin films comprises a material that has a specific resistivity of less than about 1×10−3 ohm·cm;wherein said electrochromic medium is disposed in an interpane cavity established between said third surface of said rear substrate and said second surface of said front substrate and is bounded by a perimeter seal;wherein no part of said rear substrate extends beyond any part of said front substrate;wherein a perimeter layer is disposed at said second surface of said front substrate proximate a perimeter edge of said front substrate;wherein said perimeter layer generally conceals said perimeter seal from view by a person viewing through said front substrate;wherein light that reflects off of said mirror reflector and passes through said electrochromic medium and said front substrate exhibits a substantially non-spectrally selective reflectance characteristic to a person viewing said exterior mirror reflective element when no voltage is applied to said electrochromic medium;wherein said perimeter layer comprises a reflective perimeter layer;wherein said perimeter layer comprises an electrically conductive perimeter layer;wherein at least a portion of said mirror reflector extends out under said perimeter seal towards a perimeter edge of said rear substrate;wherein an electrical connection is made to said portion of said mirror reflector outboard of said perimeter seal;wherein a display is disposed proximate said fourth surface of said rear substrate of said mirror reflective element, and wherein said display, at least when operated, is viewable to a person viewing through said front substrate of said mirror reflective element;wherein said display comprises at least one light emitting diode;wherein said display is configured to be operated responsive to a blind spot detector of a vehicle equipped with an exterior rearview mirror assembly that incorporates said mirror reflective element; andwherein said front substrate comprises a front glass substrate and said rear substrate comprises a rear glass substrate. 14. The exterior mirror reflective element of claim 13, wherein said mirror reflector has a sheet resistance of less than about 5 ohms per square. 15. The exterior mirror reflective element of claim 13, wherein said electrical connection comprises a conductive epoxy. 16. The exterior mirror reflective element of claim 13, wherein said perimeter seal is at least partially visible to a person viewing through said rear substrate. 17. The exterior mirror reflective element of claim 13, wherein said exterior mirror reflective element comprises a convex curved exterior mirror reflective element and wherein said exterior mirror reflective element is suitable for use in a passenger side vehicular exterior rearview mirror assembly. 18. A variable reflectance exterior mirror reflective element suitable for use in a vehicular exterior rearview mirror assembly, said exterior mirror reflective element comprising: a front glass substrate and a rear glass substrate;an electrochromic medium disposed between said front and rear substrates;wherein said front substrate has a first surface and a second surface;said second surface of said front substrate having a transparent electrically conductive layer disposed thereat;wherein said rear substrate has a third surface and a fourth surface;a mirror reflector disposed at a surface of said rear substrate;wherein said mirror reflector comprises a stack of thin films comprising at least two thin films, and wherein said stack of thin films comprises at least one metal thin film;wherein a first thin film of said stack of thin films comprises a material that has a specific resistivity of less than about 1×10−3 ohm·cm, and wherein a second thin film of said stack of thin films comprises a material that has a specific resistivity of less than about 1×10−3 ohm·cm;wherein said electrochromic medium is disposed in an interpane cavity established between said third surface of said rear substrate and said second surface of said front substrate and is bounded by a perimeter seal;wherein no part of said rear substrate extends beyond any part of said front substrate;wherein a perimeter layer is disposed at said second surface of said front substrate proximate a perimeter edge of said front substrate;wherein said perimeter layer generally conceals said perimeter seal from view by a person viewing through said front substrate;wherein light that reflects off of said mirror reflector and passes through said electrochromic medium and said front substrate exhibits a substantially non-spectrally selective reflectance characteristic to a person viewing said exterior mirror reflective element when no voltage is applied to said electrochromic medium;wherein said perimeter layer comprises a reflective perimeter layer;wherein said perimeter layer comprises an electrically conductive perimeter layer;wherein at least a portion of said mirror reflector extends out under said perimeter seal towards a perimeter edge of said rear substrate;wherein an electrical connection is made to said portion of said mirror reflector outboard of said perimeter seal;wherein said exterior mirror reflective element is suitable for use in a driver side vehicular exterior rearview mirror assembly and, wherein said exterior mirror reflective element comprises aspheric substrates and has a more curved outboard region and a less curved inboard region, and wherein said outboard region is further from a driver of a vehicle equipped with said exterior mirror reflective element and said inboard region is closer to the driver of the equipped vehicle when said exterior mirror reflective element is used in a driver side vehicular exterior rearview mirror assembly attached at a driver side of the equipped vehicle; andwherein a demarcation is provided between said more curved outboard region and said less curved inboard region of said exterior mirror reflective element. 19. The exterior mirror reflective element of claim 18, wherein a display is disposed proximate said fourth surface of said rear substrate of said mirror reflective element, and wherein said display, at least when operated, is viewable to a person viewing through said front substrate of said mirror reflective element, and wherein said display comprises at least one light emitting diode, and wherein said display is configured to be operated responsive to a blind spot detector of the equipped vehicle. 20. The exterior mirror reflective element of claim 19, wherein said mirror reflector has a sheet resistance of less than about 5 ohms per square. 21. The exterior mirror reflective element of claim 19, wherein said electrical connection comprises a conductive epoxy. 22. The exterior mirror reflective element of claim 19, wherein said perimeter seal is at least partially visible to a person viewing through said rear substrate.
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