Patent ID: 8013962
Filing Date: 2011-09-06
Classification: G02F

Abstract:
1. An LCD apparatus, comprising: a liquid crystal panel including display pixels in which a red color filter, a green color filter and a blue color filter are disposed; and a side lighting type backlight including a reflecting layer and a light guide disposed between the reflecting layer and the liquid crystal panel, wherein the reflecting layer reflects ambient light, which passed through the liquid crystal panel and the light guide in sequence, in such a way that the ambient light reflected by the reflecting layer passes through the light guide and illuminates the liquid crystal panel, wherein the red color filter, the green color filter, and the blue color filter are configured such that a spectral characteristic of composite light has a compensatory characteristic, said composite light being defined as light combining: (i) light that emerges from the red color filter when reference light is let to pass and return through the red color filter, (ii) light that emerges from the green color filter when the reference light is let to pass and return through the red color filter, and (iii) light that emerges from the blue color filter when the reference light is let to pass and return through the blue color filter, and wherein said compensatory characteristic is such that said spectral characteristic of the composite light substantially compensates for variations in light intensity among wavelength ranges of the red, green, and blue color filters that occur in light emerging from the light guide when the reference light is let to pass and return through the light guide with the reflecting layer.