Effect of ambient lighting on liquid–crystal displays with different types of surface treatment

Abstract

Liquid-crystal displays (LCDs) with different types of surface treatment have been developed for decreasing the effect of ambient lighting on a displayed image. The effect of ambient lighting on LCDs with different surface treatments, namely, glare (G)-type, anti-glare (AG)-type, and anti-reflection (AR)-coating LCDs, was evaluated quantitatively in this study for appropriate selection. The effect of ambient lighting on diffuse reflection and specular reflection was investigated. The coefficient of diffuse reflection of the AR-coating LCD was smaller than the others. The effect of diffuse reflection on the display function of each LCD was evaluated in terms of the deviation of the contrast response at the lowest luminance level when the illuminance changed from the condition that was used for calibration of the grayscale standard display function. The display function of the AR-coating LCD was affected less by diffuse reflection compared to the others. On the other hand, the coefficient of specular reflection of the AG-type LCD was the smallest until the angle of aperture of the light source was 4.6°. The specular-reflected image on the AG-type LCD had a remarkably broad distribution compared to the others. Our results are merely examples for a limited number of LCDs; however, we clarified quantitatively that the AR-coating and the AG-type LCDs were affected less by diffuse and specular reflection than the G-type LCD.

73‐2: Optimized WRGB OLED Reflection Properties to Enhance Visual Quality in Gaming Displays

“…On the other hand, unwanted, disturbing reflection on the display screen reduced the contrast of displayed information in the local area [3]. Accordingly many techniques have been developed to improve the reflection of the display screen by applying anti-reflective (AR) films [4][5] and polarizers [6]. While anti-glare (AG) films can reduce unwanted reflections, they can also result in sparkling dots and blur the displayed information when combined with the subpixel structure of the screen [7].…”

Broader-Band and Flexible Antireflective Films with the Window-like Structures Inspired by the Backside of Butterfly Wing Scales

“…In fact, the broader-band antireflection has always been the important, significant, and eventual pursuit in the field of antireflection. In many applications, such as architectural glass, car windshield, solar cell, cameras, optical components, liquid-crystal displays, , etc., broad-band antireflection films (ARFs) play a more and more crucial role of enhancing the efficiency of important optical parts. Eliminating unexpected reflection from contacted interfaces in these fields could save energy, reduce the occurrence of hazards, and get better visual effects.…”