eli5: why do twisted nematic displays appear black when viewed from extreme angles?
In: 4
The shades are more the TN elements themselves.
If I’m remembering it correctly, the light comes through the polarizer, and the TN elements themselves are twisted either parallel to the polarized light (on), or perpendicular to the light polarization (off).
So I’ve always visualized the shades in the analogy as the TN elements themselves. When they’re open and allowing light to pass through, they’re parallel to the light coming in the window, but when they’re closed, they’re perpendicular to that same light.
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