| 摘要 |
An illumination apparatus comprises an array of inorganic light emitting elements which is formed by selectively removing inorganic light emitting diodes (LEDs) from an array formed on a monolithic wafer and preserving the relative spatial positions of the diodes then forming an array of the selectively removed inorganic LEDs whilst maintaining the relative spatial positions, so that the inorganic LEDs 6, 8 are interspersed in gaps within an array of organic light emitting diodes (OLEDs) 4, positioned within apertures within OLEDs (see Fig. 6a), or formed on the surface of a continuous layer of OLEDs (see Fig. 7) the inorganic LEDs and OLEDs sharing a common substrate 2. There may be more than one array of inorganic LEDs 6, 8, each with different wavelength characteristics. The inorganic light emitting elements 6, 8 are provided at reduced density compared to the organic light emitting elements, achieving high efficiency, long lifetime and high uniformity for white light illumination over a large area. |
