ELECTROLUMINESCENT FILMS FOR BACKLIGHTING LIQUID CRYSTAL DISPLAYS
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Abstract
The present invention replaces the conventional cold cathode fluorescent tubes used in backlighting units of liquid crystal displays with an integrated electro-luminescent film structure, subdivided into electrically isolated micro-panels. Ideally, the electro-luminescent structure comprises separate red, green and blue micro-panels providing full color capabilities. Alternatively, the electro-luminescent film structure includes stacked groups of layers, in which each group emits a different color and is independently controllable.
9 Citations
40 Claims
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1-25. -25. (canceled)
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26. An electro-luminescent film structure comprising:
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a substrate; a multi-color light emitting film structure supported by the substrate comprising a plurality of independently-controllable, multi-layer, color-emitting micro-panels including a first micro-panel for emitting light at a first wavelength, and a second micro-panel for emitting light at a second wavelength different from the first wavelength; and a set of upper and lower contacts for each micro-panel, each set of contacts isolated from each other, for independently applying an electric field to each micro-panel, whereby the first and second wavelengths can be selectively emitted together or separately; a controller for actuating the sets of upper and lower contacts for generating a uniform color from the first and second wavelengths of the first and second micro-panels, respectively. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification