Electro-optic mirror element and process of making same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02F-001/1341
B32B-017/10
G02F-001/161
B60R-001/08
B29D-011/00
G02F-001/157
B29K-063/00
B29K-105/20
출원번호
US-0273753
(2016-09-23)
등록번호
US-9897889
(2018-02-20)
발명자
/ 주소
Habibi, Hamid
Gallas, Michael L.
출원인 / 주소
MAGNA MIRRORS OF AMERICA, INC.
대리인 / 주소
Gardner, Linn, Burkhart & Flory, LLP
인용정보
피인용 횟수 :
0인용 특허 :
165
초록▼
A process for filling an electro-optic rearview mirror reflective element assembly includes providing an unfilled mirror cell and providing a filling element having a fluid reservoir, a mirror cell receiving portion, and a channel that provides fluid communication between the fluid reservoir and the
A process for filling an electro-optic rearview mirror reflective element assembly includes providing an unfilled mirror cell and providing a filling element having a fluid reservoir, a mirror cell receiving portion, and a channel that provides fluid communication between the fluid reservoir and the mirror element receiving portion. The unfilled mirror cell and the filling element and compressible sealing element are positioned in a vacuum chamber such that the mirror cell receiving portion receives an upper portion of the unfilled mirror cell. Negative pressure is established in the vacuum chamber and electro-optic fluid is provided at the fluid reservoir of the filling element, with the fluid flowing through the channel and passageway and fill port to fill an interpane cavity of the mirror cell with electro-optic fluid. After filling the interpane cavity, the filling element and sealing element are removed and the fill port is plugged.
대표청구항▼
1. A process for filling a variable reflectance vehicular electro-optic rearview mirror reflective element assembly, said filling process comprising: providing an unfilled mirror cell comprising a front substrate and a rear substrate joined by a perimeter seal, wherein said perimeter seal spaces sai
1. A process for filling a variable reflectance vehicular electro-optic rearview mirror reflective element assembly, said filling process comprising: providing an unfilled mirror cell comprising a front substrate and a rear substrate joined by a perimeter seal, wherein said perimeter seal spaces said front and rear substrates apart and forms an interpane cavity therebetween, and wherein said perimeter seal has a gap between terminal ends of said perimeter seal to provide a fill port for said unfilled mirror cell when said front and rear substrates are joined together;providing a filling element, wherein said filling element comprises (i) a fluid reservoir, (ii) a mirror cell receiving portion and (iii) a channel that provides fluid communication between said fluid reservoir and said mirror element receiving portion;providing a compressible sealing element having a passageway therethrough;positioning said unfilled mirror cell in a vacuum chamber with said fill port disposed at an upper portion of said unfilled mirror cell;positioning said filling element and said compressible sealing element in the vacuum chamber such that said mirror cell receiving portion receives said upper portion of said unfilled mirror cell, with said fluid reservoir disposed above said mirror cell receiving portion, and with said compressible sealing element between said filling element and said unfilled mirror cell, wherein said filling element substantially seals at said unfilled mirror cell around said fill port via said compressible sealing element;establishing negative pressure in the vacuum chamber to place said unfilled mirror cell under negative pressure with no pressure differential between said interpane cavity and the negative pressure of the vacuum chamber;providing electro-optic fluid at said fluid reservoir of said filling element, said electro-optic fluid flowing through said channel of said filling element and through said passageway of said compressible sealing element and through said fill port of said unfilled mirror cell to fill said interpane cavity with said electro-optic fluid; andafter said interpane cavity is filled with said electro-optic fluid and while the filled mirror cell is still in the vacuum chamber and under negative pressure, removing said filling element and said compressible sealing element from the filled mirror cell and plugging said fill port. 2. The filling process of claim 1, wherein, during the filling process, said interpane cavity is filled with said electro-optic fluid without use of beads disposed in said interpane cavity. 3. The filling process of claim 1, wherein said electro-optic fluid comprises an electrochromic fluid. 4. The filling process of claim 1, wherein, during the filling process, the electro-optic fluid flows through said fill port to fill said interpane cavity via gravity feed. 5. The filling process of claim 1, wherein, during the filling process, the electro-optic fluid flows through said fill port to fill said interpane cavity via pressurized filling. 6. The filling process of claim 5, wherein said reservoir of said filling element comprises a tube port that receives a tube that provides pressurized electro-optic fluid. 7. The filling process of claim 1, wherein said filling element comprises polytetrafluoroethylene (PTFE). 8. The filling process of claim 1, wherein said front substrate has a transparent electrically conductive coating disposed at a surface facing said interpane cavity, and wherein said rear substrate has a conductive coating disposed at a surface facing said interpane cavity. 9. The filling process of claim 1, wherein positioning said unfilled mirror cell comprises fixturing said unfilled mirror cell in the vacuum chamber in a vertical orientation with said fill port at an uppermost portion of said unfilled mirror cell. 10. The filling process of claim 1, wherein positioning said unfilled mirror cell comprises fixturing said unfilled mirror cell in the vacuum chamber in an angled orientation so that said front and rear substrates are at an angle relative to vertical. 11. The filling process of claim 1, wherein plugging said fill port comprises plugging said fill portion with a plug material in an uncured state, and wherein said filling process further comprises curing said plug material to seal said electro-optic fluid in said interpane cavity. 12. The filling process of claim 11, wherein plugging said fill port and curing said plug material are performed while the filled mirror cell is still in the vacuum chamber and under negative pressure. 13. A process for filling a variable reflectance vehicular electrochromic rearview mirror reflective element assembly, said filling process comprising: providing an unfilled mirror cell comprising a front substrate and a rear substrate joined by a perimeter seal, wherein said perimeter seal spaces said front and rear substrates apart and forms an interpane cavity therebetween, and wherein said perimeter seal has a gap between terminal ends of said perimeter seal to provide a fill port for said unfilled mirror cell when said front and rear substrates are joined together;wherein said front substrate has a transparent electrically conductive coating disposed at a surface facing said interpane cavity, and wherein said rear substrate has a conductive coating disposed at a surface facing said interpane cavity;providing a filling element, wherein said filling element comprises (i) a fluid reservoir, (ii) a mirror cell receiving portion and (iii) a channel that provides fluid communication between said fluid reservoir and said mirror element receiving portion;providing a compressible sealing element having a passageway therethrough;positioning said unfilled mirror cell in a vacuum chamber with said fill port disposed at an upper portion of said unfilled mirror cell;positioning said filling element and said compressible sealing element in the vacuum chamber such that said mirror cell receiving portion receives said upper portion of said unfilled mirror cell, with said fluid reservoir disposed above said mirror cell receiving portion, and with said compressible sealing element between said filling element and said unfilled mirror cell, wherein said filling element substantially seals at said unfilled mirror cell around said fill port via said compressible sealing element;establishing negative pressure in the vacuum chamber to place said unfilled mirror cell under negative pressure with no pressure differential between said interpane cavity and the negative pressure of the vacuum chamber;providing electrochromic fluid at said fluid reservoir of said filling element, said electrochromic fluid flowing through said channel of said filling element and through said passageway of said compressible sealing element and through said fill port of said unfilled mirror cell to fill said interpane cavity with said electrochromic fluid;after said interpane cavity is filled with said electrochromic fluid and while the filled mirror cell is still in the vacuum chamber and under negative pressure, removing said filling element and said compressible sealing element from the filled mirror cell;plugging said fill port with a plug material in an uncured state; andcuring said plug material to seal said electrochromic fluid in said interpane cavity. 14. The filling process of claim 13, wherein, during the filling process, said interpane cavity is filled with said electrochromic fluid without use of beads disposed in said interpane cavity. 15. The filling process of claim 13, wherein positioning said unfilled mirror cell comprises fixturing said unfilled mirror cell in the vacuum chamber in a vertical orientation with said fill port at an uppermost portion of said unfilled mirror cell. 16. The filling process of claim 13, wherein plugging said fill port and curing said plug material are performed while the filled mirror cell is still in the vacuum chamber and under negative pressure. 17. A process for filling a variable reflectance vehicular electro-optic rearview mirror reflective element assembly, said filling process comprising: providing an unfilled mirror cell comprising a front substrate and a rear substrate joined by a perimeter seal, wherein said perimeter seal spaces said front and rear substrates apart and forms an interpane cavity therebetween, and wherein said perimeter seal has a gap between terminal ends of said perimeter seal to provide a fill port for said unfilled mirror cell when said front and rear substrates are joined together;wherein said front substrate has a transparent electrically conductive coating disposed at a surface facing said interpane cavity, and wherein said rear substrate has a conductive coating disposed at a surface facing said interpane cavity;providing a filling element, wherein said filling element comprises (i) a fluid reservoir, (ii) a mirror cell receiving portion and (iii) a channel that provides fluid communication between said fluid reservoir and said mirror element receiving portion;wherein said filling element comprises polytetrafluoroethylene (PTFE);providing a compressible sealing element having a passageway therethrough;positioning said unfilled mirror cell in a vacuum chamber with said fill port disposed at an upper portion of said unfilled mirror cell;positioning said filling element and said compressible sealing element in the vacuum chamber such that said mirror cell receiving portion receives said upper portion of said unfilled mirror cell, with said fluid reservoir disposed above said mirror cell receiving portion, and with said compressible sealing element between said filling element and said unfilled mirror cell, wherein said filling element substantially seals at said unfilled mirror cell around said fill port via said compressible sealing element;wherein positioning said unfilled mirror cell comprises fixturing said unfilled mirror cell in the vacuum chamber in a vertical orientation with said fill port at an uppermost portion of said unfilled mirror cell;establishing negative pressure in the vacuum chamber to place said unfilled mirror cell under negative pressure with no pressure differential between said interpane cavity and the negative pressure of the vacuum chamber;providing electro-optic fluid at said fluid reservoir of said filling element, said electro-optic fluid flowing through said channel of said filling element and through said passageway of said compressible sealing element and through said fill port of said unfilled mirror cell to fill said interpane cavity with said electro-optic fluid;wherein, during the filling process, said interpane cavity is filled with said electro-optic fluid without use of beads disposed in said interpane cavity; andafter said interpane cavity is filled with said electro-optic fluid and while the filled mirror cell is still in the vacuum chamber and under negative pressure, removing said filling element and said compressible sealing element from the filled mirror cell and plugging said fill port. 18. The filling process of claim 17, wherein, during the filling process, the electro-optic fluid flows through said fill port to fill said interpane cavity via gravity feed. 19. The filling process of claim 17, wherein, during the filling process, the electro-optic fluid flows through said fill port to fill said interpane cavity via pressurized filling, and wherein said reservoir of said filling element comprises a tube port that receives a tube that provides pressurized electro-optic fluid. 20. The filling process of claim 17, wherein plugging said fill port comprises plugging said fill portion with a plug material in an uncured state, and wherein said filling process further comprises curing said plug material to seal said electro-optic fluid in said interpane cavity, and wherein plugging said fill port and curing said plug material are performed while the filled mirror cell is still in the vacuum chamber and under negative pressure.
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