| 摘要 |
<p>The invention relates to a support (10) for an organic-light-emitting-diode device (1000) comprising a transparent substrate (1) of given first optical refractive index n1, comprising: a dielectric grating (3) in the form of one or more layers arranged discontinuously so as to form an array of what are called low-index patterns (30), the grating having a second optical refractive index n2 of 1.6 or less, the low-index patterns being submicron-sized in height, the average pattern width A1 being 6 µm or less and the distance B1 between micron-sized patterns being larger than the width A1; and a first electrode (4), with a given third optical refractive index n3 of 1.7 or more. The distance B1 is aperiodic. At least some of the thickness of the first electrode (4) is above said grating (3) and makes contact with the surface of the grating (3) which is furthest from that substrate (1), or is spaced apart from the grating (3) of low-index patterns. The grating (3) is buried in a high-index medium (100) and is therefore inside the high-index medium, the high-index medium comprising the first electrode (4) in the form of the one or more layers furthest from the substrate, the high-index medium having a fourth refractive index n4 of 1.7 or more. The invention also relates to the process for manufacturing such a support.</p> |
