Asymmetric Black Matrix for Display Panel Light Utilization

The black matrix layer is designed with different light reflectivity on its two sides: the first side (facing the liquid crystal layer) has high light reflectivity to reflect stray light back into the liquid crystal layer for再利用, while the second side (facing the backlight) has low light reflectivity to allow controlled light transmission. This local differentiation of optical properties enables the black matrix to perform both color separation and light management functions simultaneously, resolving the contradiction between color separation reliability and light emission intensity.

The invention changes the optical parameters of the black matrix layer by introducing asymmetric light reflectivity. By making the first side highly reflective and the second side less reflective, the black matrix layer achieves effective color separation without requiring increased physical dimensions. This parameter change allows the black matrix to maintain its light-shielding function while minimizing its impact on the aperture ratio, as the reflective properties enhance light utilization within the existing structural constraints.

The invention converts the potentially harmful effect of the black matrix layer absorbing and blocking light into a beneficial effect by designing it with high light reflectivity on its first side. Instead of simply absorbing stray light (which would represent energy loss), the reflective black matrix layer bounces stray light back into the liquid crystal layer, giving it another chance to be properly directed and utilized. This transforms what would be wasted light energy into useful light that contributes to the display output, thereby improving light utilization rate while maintaining effective light shielding where needed.