A red-light micro LED display made of an AlGaInP epilayer with a resolution of 64 × 32 pixels. a pitch of 175 μm and a luminous area of 1 cm × 0. 5 cm was fabricated and characterized in this study. The AlGaInP epilayer was bonded to double polished sapphire substrate by wafer-bonding technique and then removing the absorbing GaAs substrate. https://herbsdailyes.shop/product-category/barriers/