Highly efficient OLED device
AssigneeInternational Business Machines Corporation
InventorsRussell Alan Budd, George Liang-Tai Chiu, Richard Alan Haight
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Abstract
An OLED device which is capable of utilizing light transmitted from the sides of the OLED as well as the surface of the OLED is provided. The OLED device comprises an OLED having a substrate surface and sides for emission of photons therethrough and at least one adjacent light-folding means, wherein said light-folding means collects and redirects photons emitted from the sides of the OLED into coincident paths of light which are substantially parallel to said photons emitted from said substrate surface.
Claims25
An organic light emitting diode (SLED) device comprising:
- a substrate surface and side edges for emission of photons therethrough;
- a waveguide layer for guiding photons to said side edges for collimated emission thereof;
- and,
- at least one light-folding means adjacent to said SLED device, wherein said adjacent light-folding means collects and redirects the photons emitted from the sides of the OLED into coincident paths of light which are substantially parallel to the photons emitted by said substrate surface including paths perpendicular to said substrate surface, thereby increasing throughput of photons and luminosity of the OLED device.
An organic light emitting diode (OLED) device comprising:
- a substrate surface and side edges for emission of photons therethrough;
- a waveguide layer for guiding photons to said side edges for collimated emission thereof;
- and
- at least one light-folding means adjacent to said OLED device, wherein a light generating layer of said OLED is about 1 mm to about 20 mm wide and said adjacent light-folding means collects and redirects photons emitted from the sides of the OLED into coincident paths of light which are substantially parallel to the photons emitted by said substrate surface, thereby increasing throughput of photons and luminosity of the OLED device.
A color segmented SLED device for color sequential use comprising;
- a plurality of color emitting OLEDs, each of said color emitting OLEDs having a substrate surface and side edges for emission of photons therethrough, and arranged sequentially in a predetermined order, and, a waveguide layer for guiding photons to said side edges for collimated emission thereof;
- and
- at least one light-folding means adjacent to said OLED device capable of collecting and redirecting photons emitted from the sides of the OLEDs into coincident beams which are substantially parallel to photons which are emitted by the substrate surfaces of said plurality of said color emitting OLEDs including paths perpendicular to said substrate surface, thereby increasing throughput of photons and luminosity of the OLEDs.
Dependencies are inferred from the claim text.