LIGHT EMITTING DIODE DISPLAY AND INSULATED GLASS UNIT INCLUDING THE SAME

• US 20190134952A1
• Filed: 04/07/2017
• Published: 05/09/2019
• Est. Priority Date: 04/08/2016
• Status: Active Grant

• Current Assignee: Pilkington Group Limited
• Original Assignee: Pilkington Group Limited
• Inventors: VARANASI, SRIKANTH, MCSPORRAN, NEIL
• Granted Patent: US 10,780,673 B2
• Time in Patent Office: Days
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10055 with at least one intermediate air space
• CPC Class Codes: B32B 17/10119 having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate
• CPC Class Codes: B32B 17/10211 Doped dielectric layer, electrically conductive, e.g. SnO2:F
• CPC Class Codes: B32B 17/10541 comprising a light source or a light guide
• CPC Class Codes: B32B 17/10651 comprising colorants, e.g. dyes or pigments
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: G02B 5/226 Glass filters
• CPC Class Codes: G02B 6/0021 for housing at least a part of the light source, e.g. by forming holes or recesses

Abstract

A light emitting diode display is described including inner and outer panes of glass. The inner pane of glass has first and second major surfaces wherein a visible light reflection from the second major surface is 7.6% or less. The outer pane of glass is in a parallel relationship with the inner pane of glass. One or more light emitting diodes (LEDs) and at least one (a first) interlayer is provided between the inner and outer panes of glass. The first interlayer encapsulates the one or more LEDs. A conductive coating may be formed over the first major surface of the inner pane of glass and at least one (a first) of the one or more LEDs may be provided on the conductive coating, the first light emitting diode being in electrical communication with the conductive coating. The conductive coating may be transparent to visible light.

Claims

1-41. -41. (canceled)

42. A light emitting diode display, comprising:

an inner pane of glass having a first major surface and a second major surface, wherein a visible light reflection (Illuminant D65, 10 degree observer) from the second major surface of the inner pane of glass is 7.6% or less;

an outer pane of glass in a parallel relationship with the inner pane of glass;

one or more light emitting diodes provided between the inner pane of glass and the outer pane of glass; and

at least one (a first) interlayer provided between the inner pane of glass and the outer pane of glass, wherein the first interlayer encapsulates the one or more light emitting diodes.

43. The light emitting diode display according to claim 42 wherein a conductive coating is formed over the first major surface of the inner pane of glass and at least one (a first) of the one or more light emitting diodes is provided on the conductive coating, the first light emitting diode being in electrical communication with the conductive coating.

44. The light emitting diode display according to claim 43, wherein the conductive coating is in direct contact with the first major surface of the inner pane of glass.

45. The light emitting diode display according to claim 43, wherein the conductive coating is in the form of at least one track.

46. The light emitting diode display according to claim 43, wherein the conductive coating is divided into one or more (first and second) electrically insulated regions, and the first light emitting diode is in electrical communication with the first and second regions of the conductive coating.

47. The light emitting diode display according to claim 43, wherein the conductive coating is transparent to visible light.

48. The light emitting diode display according to claim 42 wherein a conductive coating is formed on a carrier ply, and at least one (a first) of the one or more light emitting diodes is provided on the conductive coating on the carrier ply, the first light emitting diode being in electrical communication with the conductive coating on the carrier ply.

49. The light emitting diode display according to claim 48, further comprising a second interlayer, the carrier ply being between the first interlayer and second interlayer, the second interlayer being between the carrier ply and the inner pane of glass.

50. The light emitting diode display according to claim 43, wherein at least one of the one or more light emitting diodes is provided directly on the conductive coating and/or wherein the conductive coating comprises fluorine doped tin oxide or antimony doped tin oxide and has a sheet resistance of 5-50 ohm/sq.

51. The light emitting diode display according to claim 42, wherein visible light reflection (Illuminant D65, 10 degree observer) from the second major surface of the inner pane of glass is 7.0% or less and/or wherein the color (Illuminant D65, 10 degree observer) of the light transmitted through the display has an a* value in the range of 6 to −

6 and a b* value in the range of 6 to −

6.

52. The light emitting diode display according to claim 42, wherein the outer pane of glass is clear and has an a* value in the range of −

2 to 2 and a b* value in the range of −

2 to 2 in the CIELAB color scale system (Illuminant D65, 10 degree observer) and/or wherein the inner pane of glass is of a grey color and comprises 1.2-2.0 weight % Fe₂O₃ (total iron) and/or wherein the inner pane of glass is of a grey-blue color and has an a* value in the range of −

4 to −

2 and a b* value in the range of −

9 to −

5 in the CIELAB color scale system (Illuminant D65, 10 degree observer).

53. The light emitting diode display according to claim 42, wherein the inner pane of glass has a visible light transmission (Illuminant D65, 10 degree observer) of 39-48% or of 55-65%.

54. The light emitting diode display according to claim 42, further comprising an anti-reflective coating formed on the first major surface of the outer pane of glass.

55. The light emitting diode display according to claim 54, wherein the anti-reflective coating comprises at least one layer of tin oxide or titanium dioxide and at least one layer of silicon dioxide.

56. The light emitting diode display according to claim 54, wherein the anti-reflective coating is color neutral and a visible light reflection (Illuminant D65, 10 degree observer) measured from a side facing the first major surface of the outer pane of glass is 5.0% or less.

57. A light emitting diode display, comprising:

an inner pane of glass having a first major surface;

an outer pane of glass in a parallel relationship with the inner pane of glass;

an anti-reflective coating formed on a first major surface of the outer pane of glass, wherein a visible light reflection measured from a side facing the first major surface of the outer pane of glass is less than a visible light reflection from a second major surface of the inner pane of glass;

a conductive coating spaced apart from the anti-reflective coating;

one or more light emitting diodes provided between the inner pane of glass and the outer pane of glass, the one or more light emitting diodes being in electrical communication the conductive coating; and

at least one (a first) interlayer provided between the inner pane of glass and the outer pane of glass, wherein the first interlayer encapsulates the one or more light emitting diodes.

58. The light emitting diode display according to claim 57, wherein the conductive coating is formed on the first major surface of the inner pane of glass or wherein the conductive coating is formed on a carrier ply.

59. The light emitting diode display according to claim 57, wherein the visible light reflection measured from the side facing the first major surface of outer pane of glass is at least 0.5% less than the visible light reflection from the second major surface of the inner pane of glass and/or wherein the inner pane of glass is of a grey color or a grey-blue color and the visible light transmitted through the display has an a* value in the range of 6 to −

6 and a b* value in the range of 6 to −

6 in the CIELAB color scale system (Illuminant D65, 10 degree observer).

60. A light emitting diode display, comprising:

an inner pane of glass;

an outer pane of glass in a parallel relationship with the inner pane of glass;

a conductive coating formed on a first major surface of the inner pane of glass, wherein the conductive coating comprises an antimony doped tin oxide layer and has a sheet resistance of 5-50 ohm/sq.;

one or more light emitting diodes provided between the inner pane of glass and the outer pane of glass; and

at least one (a first) interlayer provided between the inner pane of glass and the outer pane of glass, wherein the first interlayer encapsulates the one or more light emitting diodes.

61. The light emitting diode display according to claim 60, wherein the one or more light emitting diodes are in electrical communication the conductive coating on the first major surface of the inner pane of glass or wherein the one or more light emitting diodes are mounted on a carrier ply, the carrier ply being provided with a conductive coating for providing electrical power to at least one of the one or more light emitting diodes.