Effect of Wavelength-dependent Scattering on the Color Chromaticity of the LCD Backlight

Abstract

The effect of the wavelength-dependent scattering on the change of the color chromaticity in the lightguide panel of a liquid crystal display is examined. The white light emitted from the white LEDs located at the edge of the lightguide propagates in the lightguide and is scattered by the patterned dots that are placed on the bottom of the lightguide. The scattered lights that are far from the LEDs showed reddish color compared to the bluish color that is scattered from the near area from the LEDs. The color difference was between 0.01 to 0.06 depending on the resin and the thickness of the lightguide.

Design and fabrication of light-guiding plate for a photobioreactor that utilizes sunlight

“…Thus, this ratio is considered one of the most important characteristics of photobioreactors [1,2]. The other three challenges are identical to the design goals of the illumination systems for flat-panel displays [4][5][6]. Since one of the currently optimized solutions for the illumination systems of flat-panel displays is the light-guiding plate (LGP), we believe that the LGP may also be successful in the illumination systems of flat-panel photobioreactors.…”

Simulation Study of Injection-Molded Light Guide Plates for Improving Luminance Uniformity Based on the Measured Replication Quality of Micro-Patterns for LED TV Backlight

“…Successful development of efficient backlight units has made it possible to expand the application of liquid crystal displays (LCD) to various fields including mobile devices and large-size TVs [1][2][3][4][5][6][7][8][9][10][11]. The light guide plate (LGP) is the most important optical component in the edge-lit backlight for LCD applications.…”

Fiber-based Diffuser Sheet for Liquid Crystal Display Backlight Unit

“…[1]. In the field of LCDs, many researchers have been making strong efforts to develop backlight units (BLUs) with good optical properties, namely, high luminance, good luminance uniformity, and a wide viewing angle [2][3][4][5]. In the BLUs, a diffuser sheet that can provide uniform brightness by spreading the light is a key component.…”

“…In the BLUs, a diffuser sheet that can provide uniform brightness by spreading the light is a key component. Although diffuser sheets have been developed extensively, most research has been on bead-type sheets [5][6][7]. Recently, new optical diffuser sheets based on fiber technology have been studied, and their potential has been demonstrated [8].…”