SUBSTRATE FOR DEVICE HAVING ORGANIC LIGHT-EMITTING DIODE Russian patent published in 2019 - IPC C03C3/66 C03C17/04 

FIELD: electricity.

SUBSTANCE: invention relates to a diffusing substrate for a device having an organic light-emitting diode. Vitreous material of the following composition is applied to one of the sides of a glass sheet, wt. %: Bi₂O₃ 65–85, B₂O₃ 5–12, SiO₂ 6–20, MgO+ZnO 2–9.5, Al₂O₃ 0–7 %, Li₂O+Na₂O+K₂O 0–5, CaO 0.5–5, BaO 0–20, CaO+MgO 0.5–4. Glass transition temperature T_g of the glass lies in the range of 440–480 °C.

EFFECT: high chemical resistance to acids, refractive index, reduced difference between the thermal expansion coefficients of glass and glass frit, low glass transition temperature, reduced tendency to devitrification.

13 cl, 6 tbl