Thanks for this great video ! By the way, why do we need a polarizing filter for LED display please ? Since LED is self-emitting device, there is no need for polarizing filter. My guess is that this polarizing-looking filter is a simple anti-reflection and attenuating filter. Because the ambient light will be attenuated twice and the emitted light will be attenuated only once. For example, with attenuation factor of 20%, the emitted light will be reduced to 0.25 but the ambient light will be reduced to 0.25*0.25=0.0625, so the contrast will be greatly improved. Could you please check this ? Thanks !
@best7777
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you are so professional
@AkilaZhang
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You got partially correct. Besides what you said, the polarizing layer also helps improve the viewing angles of the display. It helps reduce color distortion and brightness loss when viewing the screen from different angles.
@yangni007
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@@AkilaZhang do you mean that the polarizing filter can reduce the specular reflection from the cover glass when you look from side ? If so it can improve the contrast when viewed from sides.
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