The MLA displays use tiny lenses to alter the light path directly towards the surface of the display panel and to the user’s eyes instead of having it refracted in other directions. This significantly increases the brightness of the display and consumes much less battery to achieve one and the same luminance.
The fly in the multi-lens array OLED display ointment is that the light is refracted to the surface of the screen rather pointedly, so the side luminance hence visibility from an angle is not that great. Both Samsung and LG, however, have allegedly proposed to Apple ways to mitigate the difference in viewing angles by employing different organic light-emitting diode material that would allow sufficient light to be sent to the sides as well.
