Nokia Conversation just put out a nice article on how it really works:
So when light (sunlight) hits the screen of your phone. this is what happens
- It hits the linear polariser, this vertically polarises the light. (Polarising means – roughly – aligning the wave vibration in a particular direction).
- Then it hits the circular polariser retardation layer. This converts the light again, making it right-circularly polarised.
- Then it hits the screen and bounces off it, switching the rotation of the light to leftist.
- It goes back through the retardation layer. When this happens, the light becomes horizontally polarised.
- Finally, it hits the linear polariser, since the light is horizontally polarised at this point it can be blocked entirely by this optical solution.
|Nokia C6 with & without CBD|
Nokia Phones that currently have this CBD feature are Nokia's E7, C7, C6-01, 603, 700, 701, Lumia 710, 800 and 900,
references: oled & nokia conv