Fabrication of cell cavities for electrooptic devices

• US 8,018,638 B2
• Filed: 11/24/2008
• Issued: 09/13/2011
• Est. Priority Date: 07/20/2004
• Status: Active Grant

• Current Assignee: Ajjer, LLC
• Original Assignee: Ajjer, LLC
• Inventors: LeCompte, Robert S., Agrawal, Anoop, Tonazzi, Juan Carlos L.
• Primary Examiner(s): Martinez; Joseph
• Application Number:
  US12/277,135
• Publication Number:
  US 20090095408A1
• Time in Patent Office: 1,023 Days
• Field of Search: 359/265, 359/272, 345/49, 345/105, 349/189, 349/190, 264/4
• US Class Current: 359/265
• CPC Class Codes: C09K 9/00 Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
• CPC Class Codes: G02F 1/133351 Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
• CPC Class Codes: G02F 1/1503 caused by oxidation-reduction reactions in organic liquid solutions, e.g. viologen solutions
• CPC Class Codes: G02F 1/161 Gaskets; Spacers; Sealing of cells; Filling or closing of cells
• CPC Class Codes: H01G 9/20 Light-sensitive devices

Abstract

This invention discloses methods to dispense adhesives for fabricating multiple electrooptic devices. In addition the invention also discloses on how the cavities of these electrooptic devices may be filled by an injection process. The Electrooptic devices of this invention may comprise liquid or solid electrolytes.

Claims

1. A process for filling more than one electrochromic devices comprising front and rear spaced elements, wherein all of the said devices are formed using common front and rear substrate and a seal member bonding said front and rear elements together in a spaced apart relationship to define a chamber for each of the said device, with at least one vent and one inlet wherein the said chambers are filled by injecting a liquid electrolyte through the said inlet.

2. A process for making electrochromic devices as in claim 1, wherein the electrolyte is solidified after the chamber is filled.

3. A process for making electrochromic devices as in claim 2, where the solidification occurs via any one of multiphase formation or polymerization.

4. A process for making electrochromic devices as in claim 1, wherein the electrolyte is injected at an elevated temperature.

5. A process for making electrochromic devices as in claim 1, wherein the said chamber is preheated prior to the filling process.

6. A process for making electrochromic devices as in claim 1, wherein the electrolyte is injected at a pressure between 5 and 50 psi.

7. A process for making electrochromic devices as in claim 1, wherein the chamber is clamped during the injection process.

8. A process for making electrochromic devices as in claim 1, wherein the said devices are an electrochromic rear-view mirrors.

9. A process for making electrochromic devices as in claim 1, wherein of all the said inlets are connected to a common injection port.

10. A process for making electrochromic devices as in claim 1, wherein the chamber is flushed with an inert gas prior to the electrolyte injection process.

11. A process for making electrochromic devices as in claim 1, wherein the inlet is located in an area that is detached from the device after the filling process.

12. A process for making electrochromic devices as in claim 1, wherein after the filling process the devices are separated and then any gaps in the said seal member leading to the injection and the vent ports are sealed.

13. A process for making an electrochromic devices comprising front and rear spaced elements, wherein a perimeter seal member bonds the said front and rear elements together in a spaced apart relationship to define a chamber with at least one vent and one inlet wherein the said chambers are filled by injecting a liquid electrolyte through the said inlet, and the vent area further comprises of a dam that restricts the flow of the plug seal into the electrolyte.

14. A process for making an electrochromic devices as in claim 13, wherein the plug sealant material is injected through an opening in one of the substrates and then solidified.

15. A process for making an electrochromic device comprising front and rear spaced elements, wherein the said device is formed using front and rear substrate and a seal member bonding said front and rear elements together in a spaced apart relationship to define a chamber for the said device, wherein the said chamber is filled by introducing a liquid electrolyte through an inlet, wherein the sealant forming the said seal member composition comprises an epoxy resin that includes a pre-hydrolyzed silane.