Quattron

Quattron is the brand name of an LCD color display technology produced by Sharp Electronics.

[5][6] The technology is used in Sharp's Aquos LCD TV product line, particularly in models with screens 40 inches across and larger.

[7] The technology, distinct from the product line, has been advertised featuring George Takei as the spokesperson in the debut commercial, in which he uses his catchphrase "Oh My".

According to an analysis by Raymond Soneira, president of DisplayMate Technologies, a video calibration equipment producer, the industry-standard color spaces used by content providers mean there is no existing source material that contains the fourth color channel.

[10] Color researchers at Queen Mary University of London investigated the Quattron technology and found that although Quattron does have four physical color sub-pixels, it does not have a fourth primary in the backlight to drive it (yellow is approximately 575 nm).

Spectral response of a common Quattron display. The white response was compared with each of the four primaries, given by the respective colored lines. Yellow light produced by the display turns out to be simply the sum of the light that passes through the red pixel and the green pixel.