Projection display based on organic light emitting diodes

• Main Author: REDECKER, MICHAEL
• Format: Patent
• Language: English; French; German
• Published: 18.07.2007
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

A display using a photoluminescence quenching device comprises substrate (1) with sub-pixels (6-8) arranged on at least a first side of the substrate. Each sub-pixel comprises two electrodes (2, 5), and emitter layer (4). The first and second electrodes have first and second polarities, respectively. The emitter layer is interposed between the two electrodes. The emitter layer receives light projected from an excitation light source (9). A display using a photoluminescence quenching device comprises a substrate with sub-pixels arranged on at least a first side of the substrate. Each sub-pixel comprises two electrodes, and emitter layer. The first and second electrodes have first and second polarities, respectively. The emitter layer is interposed between the two electrodes. The emitter layer receives light projected from an excitation light source. The emitter layer emits photoluminescence light. The photoluminescence light from the emitter layer may be controllably quenched by an electrical field. The electrical field is formed by the two electrodes. An Independent claim is included for displaying an image using a display using a photoluminescence quenching device comprising projecting light emitted from an excitation light source on an emitter layer so that photoluminescence light is emitted from the emitter layer; controlling emission of the photoluminescence light by generating an electrical field in the emitter layer to quench at least some of the photoluminescence light; and displaying an image on a screen using the photoluminescence light emitted from the emitter layer.