Where does this come from, and can I check it?

Voltage applied to liquid crystals rotates light polarization to create pixels. The figure is taken from IEEE History Center, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Mondo Knows Facts

LCD displays control light passage using liquid crystals and polarizing filters

Voltage applied to liquid crystals rotates light polarization to create pixels

Liquid crystal displays do not emit light directly, but instead manipulate light from an LED backlight. Applying electrical voltage across liquid crystal molecules alters their orientation, twisting the polarization angle of light passing through glass polarizers. Sub-pixels with red, green, and blue colour filters combine to generate full-colour digital images.

LCD projector prism module — MaDCocktail · CC BY-SA 3.0 · licence · source

Where this comes from

IEEE History Center

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Tags: lcd, display, optics

LCD displays control light passage using liquid crystals and polarizing filters: the short answers

Where does this come from, and can I check it?: Voltage applied to liquid crystals rotates light polarization to create pixels. The figure is taken from IEEE History Center, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?: Yes. It sits on the Technology shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.