US Patent 7402951 OLED device having improved contrast
Patent 7402951 was granted and assigned to Eastman Kodak on July, 2008 by the United States Patent and Trademark Office.
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An organic light-emitting diode (OLED) device, comprises: a first electrode and a second transparent electrode having one or more organic layers formed there-between, at least one organic layer being light-emitting; and a contrast enhancement element formed on a side of the second transparent electrode opposite the organic layers, wherein the contrast enhancement element comprises a patterned reflective layer for reflecting emitted light and a corresponding light-absorbing layer for absorbing ambient light, wherein the reflective layer is located between the light-absorbing layer and the second transparent electrode and wherein the corresponding layers form one or more transparent openings through the reflective and light-absorbing layers so that light emitted by the light-emitting organic layer passes through the transparent openings.
US Patent 07402951 OLED device having improved contrast US Patent 7402951 OLED device having improved contrast
US Patent 07402951 OLED device having improved contrast
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