Process for manufacturing a pixel of an organic-light-emitting-diode micro-display, comprising the following successive steps: a) providing a substrate comprising a structured first electrode (E1); b) forming in succession first and second bilayer stacks on the structured first electrode (E1), each bilayer stack comprising in succession first and second layers (20, 21; 30, 31) respectively made of first and second materials that are transparent conductive oxides able to be selectively etched; c) etching the second bilayer stack in a zone intended to accommodate a blue subpixel (PB) and in a zone intended to accommodate a green subpixel (PV), the second bilayer stack being left intact under a zone intended to accommodate a red subpixel (PR); d) etching the first bilayer stack in the zone intended to accommodate the blue subpixel (PB), the first bilayer stack being left intact under the zone intended to accommodate the green subpixel (PV); e) forming a stack of organic light-emitting layers, said stack being configured to emit white light and extending through the zones intended to accommodate the red, green and blue subpixels (PR, PV, PB); f) forming a second electrode (E2) on the stack of organic light-emitting layers so as to obtain an optical resonator with the first electrode (E1); step b) being executed so that: - the first bilayer stack has a thickness chosen so that the optical resonator permits the transmission of green light, - the first and second bilayer stacks have a total thickness chosen so that the optical resonator permits the transmission of red light. a) providing a substrate comprising a structured first electrode (E1); b) forming in succession first and second bilayer stacks on the structured first electrode (E1), each bilayer stack comprising in succession first and second layers (20, 21; 30, 31) respectively made of first and second materials that are transparent conductive oxides able to be selectively etched; c) etching the second bilayer stack in a zone intended to accommodate a blue subpixel (PB) and in a zone intended to accommodate a green subpixel (PV), the second bilayer stack being left intact under a zone intended to accommodate a red subpixel (PR); d) etching the first bilayer stack in the zone intended to accommodate the blue subpixel (PB), the first bilayer stack being left intact under the zone intended to accommodate the green subpixel (PV); e) forming a stack of organic light-emitting layers, said stack being configured to emit white light and extending through the zones intended to accommodate the red, green and blue subpixels (PR, PV, PB); f) forming a second electrode (E2) on the stack of organic light-emitting layers so as to obtain an optical resonator with the first electrode (E1); step b) being executed so that: - the first bilayer stack has a thickness chosen so that the optical resonator permits the transmission of green light, - the first and second bilayer stacks have a total thickness chosen so that the optical resonator permits the transmission of red light. - the first bilayer stack has a thickness chosen so that the optical resonator permits the transmission of green light, - the first and second bilayer stacks have a total thickness chosen so that the optical resonator permits the transmission of red light. <EOS>