Patent ID: 7248313
Filing Date: 2007-07-24
Classification: G02B,G02F

Abstract:
1. A color filter including colored layers of a number n of colors regularly arranged together, wherein: is satisfied, where Y i (i=1 to n) is a luminance of the colored layers of the n colors when the filter alone is irradiated with light, Y i ′ (i=1 to n) is a luminance of the colored layers of the n colors when the filter is irradiated with the same light while being interposed between a pair of polarization plates arranged in a crossed Nicols state each having a degree of polarization of 99.98% or more, Y max /Y max ′ is a maximum value of Y i /Y i ′, and Y min /Y min ′ is a minimum value of Y i /Y i ′, and is satisfied, where Y WH is a luminance when the filter alone is irradiated with light to produce a white display, and Y B is a luminance when the filter is irradiated with the same light while being interposed between a pair of polarization plates arranged in a crossed Nicols state each having a degree of polarization of 99.98% or more and a transmittance of 36% when arranged in a parallel position.