ELECTRICALLY ACTIVE ELEMENT

• US 20080018980A1
• Filed: 06/21/2007
• Published: 01/24/2008
• Est. Priority Date: 06/21/2006
• Status: Abandoned Application

• Current Assignee: Flabeg Deutschland GmbH
• Original Assignee: Flabeg GmbH & Co. KG
• Inventors: Knebel, Olaf, Niepmann, Regine, Hoegerl, Klaus
• Application Number:
  US11/766,167
• Publication Number:
  US 20080018980A1
• Time in Patent Office: Days
• US Class Current: 359/274
• CPC Class Codes: G02F 1/161 Gaskets; Spacers; Sealing of cells; Filling or closing of cells

Abstract

An electrically active element with an electrically selectable layer system arranged between a front wall and a back wall being realized as an adhesive tape with a multilayer carrier, which has at least one lower, and preferably one upper, film component, each of them consisting of at least one plastic film, as well as a metallic layer component arranged between the upper and lower film components, and which is provided on the outer surface of the lower film component with a glue material. For improved sealing of the electrically selectable layer system, the front wall and the back wall are connected with each other in a sealing manner in their margin areas by means of a number of sealing elements consisting of a sealing film which is more deformable than the back wall.

Claims

1-24. -24. (canceled)

25. An electrically active element comprising:

a front wall;

a back wall including tin adhesive tape with a multilayer carrier including a lower film component of at least one plastic film and a metallic layer component disposed on the lower film component and an adhesive material disposed on an outer surface of the film component;

an electrically selectable layer system disposed between the front wall and the back wall; and

a plurality of sealing elements including a sealing film that is more deformable than the back wall, wherein edge areas of the front wall and the back wall are connected in a sealing manner using the plurality of seating elements.

26. The electrically active element as recited in claim 25 wherein, after folding the sealing film via loading with a test weight and subsequently releasing it, the sealing film shows a developing aperture angle of not more than half of an aperture angle of the back wall under comparable test conditions.

27. The electrically active element as recited in claim 25, wherein the carrier forming the back wall includes an upper film component of at least one plastic film, and wherein the metallic layer component is disposed between the upper and the lower film components.

28. The electrically active element as recited in claim 25,

wherein the sealing film has a first modulus of elasticity, and a first thickness,

wherein the back wall has a second modulus of elasticity and a second thickness, and wherein a product E·

a³ of the first modulus of thickness and a third power of the first thickness is at least two times smaller than a product of the second modulus of elasticity and a third power of the second thickness.

29. The electrically active element as recited in claim 25, wherein the electrically selectable layer system includes an electrochromic layer system.

30. The electrically active element as recited in claim 25, wherein at least one of the upper and lower film components of the carrier forming the back wall is formed by a plastic film made of polypropylene, polyethylene, polyester or compounds of these materials, and/or the metallic layer component is formed by an aluminium layer.

31. The electrically active element as recited in claim 30, wherein the lower and upper film components each have a thickness of about 20 to 100 μ

m, and the metallic layer component has a thickness of about 10 to 25 μ

m.

32. The electrically active element as recited in claim 25, wherein the adhesive material has a mean thickness of about 20 to 120 μ

m.

33. The electrically active element as recited in claim 25, wherein each sealing element includes a multilayer film having at least one sealing upper film component of at least one plastic film, as well as a sealing metallic layer component arranged under the sealing upper film component.

34. The electrically active element as recited in claim 33, wherein each sealing element includes a sealing lower film component of at least one plastic film, the sealing metallic layer component being arranged between the sealing upper and sealing lower film components.

35. The electrically active element as recited in claim 34, wherein the sealing upper or sealing lower film component is formed by a plastic film made of polyester, polypropylene, polyethylene, and/or the metallic layer component is formed by aluminium layer.

36. The electrically active element as recited in claim 25, wherein each sealing element is fixed to the respective component lying locally under it, by means of a glue layer.

37. The electrically active element as recited in claim 34, wherein the sealing upper film component has a thickness of about 5 to 100 μ

m, the sealing metallic layer component has a thickness of about 5 to 100 μ

m, and the sealing lower film component has a thickness of about 5 to 100 μ

m.

38. The electrically active element as recited in claim 25, wherein the sealing film is sealed in an edge area against at least one of the front wall and the back wall using a glue/sealant bead.

39. The electrically active element as recited in claim 38, wherein a surface of the glue/sealant bead is provided with a sealing layer.

40. The electrically active element as recited in claim 25 wherein a margin gap formed in the edge area between the sealing film and at least one of the front wall and the back wall is provided with a glue filling.

41. The electrically active element as recited in claim 40, wherein the glue filling is made of polyacrylate, polyurethane, epoxy, EVA or a mixture of these components.

42. The electrically active element as recited in claim 25, wherein a strip conductor covered in a sealing manner by one or several of the scaling elements is disposed on a margin strip of the front wall, which is not covered by the back wall and the electrically selectable layer system.

44. The electrically active element as recited in claim 25, wherein the sealing film includes a plurality of recesses each configured to receive a conductor element.

45. The electrically active element as recited in claim 25, wherein the sealing film includes a plurality of segments arranged laterally adjacent to each other and arranged such that edge areas of each of the segments overlap.

46. The electrically active element as recited in claim 45, wherein at least one of the segments is arranged over a first adjacent segment in a first edge area and under a second adjacent segment in a second edge area.

47. An electrochromic element including an electrically active element according to claim 25, wherein the front wall includes a transparent front glass and the electrically selectable layer system includes an electrochromic layer system.

48. A motor-vehicle mirror having an electrically active element according to claim 25.

43. The electrically active element as recited in claim 43, wherein a thickness of the strip conductor is at least 5 times greater than a thickness of the electrically selectable layer system.