Large-area flexible OLED light source
AssigneeGeneral Electric Company
InventorsAndrew S. Albrecht, James Michael Kostka
Life of this patent
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Abstract
A light emitting assembly includes a backplane having a first surface area and an impermeable layer. At least first and second light emitting devices are received on the first surface of the backplane, each light emitting device having a surface area less than the first surface area and electrically connected to an associated external driver. The first and second light emitting devices are positioned on the backplane in contiguous relation without a hermetic edge seal therebetween to maximize the filling factor, and an encapsulating material is received over and seals the first and second light emitting devices.
Claims22
A light-emitting assembly comprising:
- a backplane having a first surface area and including an electrically conductive portion on at least a first surface thereof;
- at least first and second light-emitting devices received on the first surface of the backplane and configured to each direct light outwardly in a same, first direction, each of the first and second light-emitting devices has a surface area less than the first surface area and electrically connected to the electrically conductive portion of the backplane to form a large area lighting panel on the order of 100 cm2 and greater;
- an encapsulation material extending over and hermetically sealing the at least first and second light-emitting devices without a hermetic edge seal between the first and second light-emitting devices to maximize the filling factor and minimize a gap between adjacent first and second light emitting devices;
- an electrical path for connecting to an associated electrical driver;
- an ultrahigh barrier (UHB) film received over the at least first and second light-emitting devices;
- and
- the encapsulation material including an adhesive between the UHB film and the light-emitting devices securing the at least first and second light-emitting devices to the UHB film and also between the backplane and the light-emitting devices securing the at least first and second light-emitting devices to the backplane.
A light assembly comprising:
- a backplane having a first surface that includes a conductive portion thereon;
- first and second OLEDs positioned on the backplane in contiguous relation without a hermetic edge seal between the OLEDs to maximize the filling factor and minimize a gap between adjacent OLEDs to form a large area lighting panel on the order of 100 cm2 and greater;
- an encapsulating material over the first and second OLEDs and the backplane first surface;
- an ultrahigh ultrahigh barrier (UHB) film received over the first and second OLEDs;
- and
- the encapsulating material including adhesive securing the first and second OLEDs to the UHB film and also securing the first and second OLEDs to the backplane.
A method of forming an OLED light source comprising:
- providing a backplane and an ultrahigh barrier (UHB) film;
- assembling individual OLEDs on the backplane in contiguous relation and beneath the UHB film to form a large area lighting panel on the order of 100 cm2 and greater;
- adhesively securing the OLEDs to the backplane and the UHB film;
- and
- hermetically sealing the OLEDs on the backplane without a hermetic edge seal between the OLEDs to maximize the filling factor and minimize a gap between adjacent OLEDs.
Dependencies are inferred from the claim text.