FIELD: chemistry.
SUBSTANCE: invention relates to the method of manufacturing a transparent scattering substrate of an organic light-emitting diode (OLED) comprising the following successive steps: (a) grinding one surface or both surfaces of a flat light-transmitting glass substrate with a thickness of 0.1-5 mm with the abrasive slurry to produce a flat glass substrate with, at least, one rough surface having a roughness profile with an arithmetical mean deviation Ra of 0.1-2.0 microns, preferably 0.15 to 1.5 mcm, (b) coating the rough surface or one of the rough surfaces by the glass sealant with a high refractive index having a refractive index preferably ranging from 1.7 to 2.2, (c) heating the coated substrate to the temperature above the melting temperature of the glass sealant with a high refractive index and below the softening temperature of the underlying substrate for the production of enamel with a high refractive index on one of the rough surfaces. The amount of the glass sealant is sufficient to completely cover the roughness profile of the rough surface after the said glass sealant is melted.
EFFECT: providing a more gently rough surface profile of the substrate with the possibility of making a substrate in a single step with both internal and external light extraction, simplifying the processing of light-scattering substrates.
15 cl, 1 ex, 1 tbl
