Colorant Filter Absorption Spectrum for LCD Luminance

The patent segments the light filtering function into multiple independent colorant layers, each targeting specific wavelength regions. Instead of using a single broad-spectrum colorant that absorbs both necessary and unnecessary wavelengths, multiple narrow-band colorant layers are stacked to selectively block only the unwanted wavelengths while preserving the useful light spectrum, thereby maintaining high luminance while achieving accurate color reproduction.

The patent applies local quality by assigning different absorption characteristics to different regions of the optical path. Each colorant layer is positioned and configured to absorb light in its specific target wavelength range, creating a spatially distributed filtering system. This allows the backlight to maintain high intensity in the useful wavelength regions while selectively removing unwanted wavelengths, resolving the contradiction between color accuracy and luminance.

The patent divides the color filtering task into multiple specialized colorant layers, each responsible for a specific portion of the spectrum. This segmentation allows the system to achieve a wide color gamut by selectively blocking specific wavelength regions while preserving others, rather than using a single colorant that broadly absorbs light and reduces overall luminance.

The patent employs composite material structures by combining multiple colorant layers with distinct absorption characteristics. This composite approach creates a multi-functional filtering system that simultaneously achieves wide color reproduction range by blocking unnecessary wavelengths while maintaining high luminance through the selective preservation of useful light spectrum.

The patent segments the filtering function into multiple thin colorant layers, each with a narrow absorption bandwidth targeting specific wavelength regions. This segmentation transforms a single complex broad-band filter into multiple simple narrow-band filters, reducing the luminance penalty for each layer while collectively achieving the desired spectral filtering effect.

The patent applies partial action by using multiple colorant layers that each handle only a portion of the filtering task. Rather than one layer attempting to block all unnecessary wavelengths (which would cause excessive luminance loss), each layer performs a partial filtering function, and the cumulative effect of all layers achieves complete filtering with minimal total luminance decrease.