Method for filling the cavities of cells with a chromogenic fluid

• US 5,856,211 A
• Filed: 04/09/1997
• Issued: 01/05/1999
• Est. Priority Date: 04/10/1996
• Status: Expired due to Fees

• Current Assignee: Donnelly Corporation (Magna International Incorporated)
• Original Assignee: Donnelly Corporation (Magna International Incorporated)
• Inventors: Tonazzi, Juan C. Lopez, Agrawal, Anoop, Kucharczyk, Joseph E. Jr.
• Primary Examiner(s): Bowers, Charles
• Assistant Examiner(s): CHRISTIANSON, KEITH ALAN
• Application Number:
  US08/831,646
• Time in Patent Office: 636 Days
• Field of Search: 438/98, 438/69, 359/265, 359/272
• US Class Current: 438/69
• CPC Class Codes: B32B 17/10917 between two pre-positioned glass layers
• CPC Class Codes: G02F 1/1341 Filling or closing of cells
• CPC Class Codes: G02F 1/161 Gaskets; Spacers; Sealing of cells; Filling or closing of cells

Abstract

A method and apparatus are disclosed for filling a cell cavity positioned between a first substrate and a second substrate with a cell filling liquid. The method entails forming at least one evacuation cavity encompassing at least a portion of an outer surface of each of the first and second substrates of a cell containing a cell cavity and isolating the cell cavity from the evacuation cavity; reducing a pressure in each of the evacuation cavity and the cell cavity; and dispensing the cell filling fluid into the cell cavity.

Claims

1. A method for filling a preformed cell cavity positioned between a first substrate and a second substrate with a cell filling fluid for cells to be used in a chromogenic laminate, said method comprising the steps of:

(a) forming a first evacuation cavity having as a portion of a boundary thereto at least a portion of an outer surface of said first substrate;

(b) forming a second evacuation cavity having as a portion of a boundary thereto at least a portion of an outer surface of said second substrate;

(c) reducing a pressure in each of (i) said cell cavity, (ii) said first evacuation cavity, and (iii) said second evacuation cavity; and

(d) dispensing the cell filling fluid into said cell cavity.

2. A method for filling a cell cavity according to claim 1, wherein said cell filling fluid is a liquid.

3. A method for filling a cell cavity according to claim 2, further comprising the step of heating at least one of said cell filling liquid or said cell.

4. A method for filling a cell cavity according to claim 2, further comprising the step of reacting said cell filling liquid to form a solid in said cell cavity.

5. A method for filling a cell cavity according to claim 1, further comprising the steps of forming a cell filling fluid by heating a cell filling material and cooling said cell filling fluid in said cell cavity.

6. A method for filling a cell cavity according to claim 2, further comprising the step of increasing the pressure in each of said first evacuation cavity and said second evacuation cavity after beginning to dispense said cell filling liquid into said cell cavity.

7. A method for filling a cell cavity according to claim 1, wherein said cell cavity is disposed in a chromogenic laminate.

8. A method for filling a preformed cell cavity positioned between a first substrate and a second substrate with a cell filling fluid for cells to be used in chromogenic laminate, said method comprising the steps of:

(a) forming at least one evacuation cavity encompassing at least a portion of an outer surface of each of the first substrate and the second substrate of a cell containing said cell cavity and isolating said cell cavity from said evacuation cavity;

(b) reducing a pressure in each of said evacuation cavity and said cell cavity; and

(c) dispensing the cell filling fluid into said cell cavity.

9. A method for filling a cell cavity according to claim 8, wherein said cell filling fluid is a liquid.

10. A method for filling a cell cavity according to claim 8, further comprising the step of heating said cell filling fluid or said cell.

11. A method for filling a cell cavity according to claim 9, further comprising the step of reacting said cell filling liquid to form a solid in said cell cavity.

12. A method for filling a cell cavity according to claim 8, further comprising the step of increasing the pressure in said evacuation cavity after beginning to dispense said cell filling liquid into said cell cavity.

13. A method for filling a cell cavity according to claim 8, wherein said cell cavity is disposed in a chromogenic laminate.

14. A method of filling a preformed cell cavity positioned between a first substrate and a second substrate with a cell filling fluid for cells to be used in a chromogenic laminate, said method comprising the steps of:

(a) aligning a first support member against at least a portion of an outer surface of said first substrate;

(b) aligning a second support member against at least a portion of an outer surface of said second substrate;

(c) dispensing the cell filling fluid into said cell cavity while said first support member and said second support member maintain a pressure against said respective first substrate and second substrate; and

(d) removing said first support member and said second support member from said respective outer surface of said first substrate and second substrate after filling said cell cavity.

15. A method for filling a cell cavity according to claim 14, wherein said cell filling fluid is a liquid.

16. A method for filling a cell cavity according to claim 15, further comprising the step of heating at least one of said cell filling liquid or said cell.

17. A method for filling a cell cavity according to claim 15, further comprising the step of reacting said cell filling liquid to form a solid in said cell cavity.

18. A method for filling a cell cavity according to claim 14, further comprising the steps of forming a cell filling fluid by heating a cell filling material and cooling said cell filling fluid in said cell cavity.

19. A method for filling a cell cavity according to claim 14, wherein said cell cavity is disposed in a chromogenic laminate.