Backlight Module Reflective Masking Layer for Lighting Efficiency

The masking layer is segmented into multiple functional layers: a lower masking layer with light-blocking portions and an upper masking layer with light-emitting portions. This segmentation allows different regions to perform different functions - blocking light where not needed while efficiently emitting light where required, thereby improving overall lighting efficiency without excessive absorption.

Different portions of the masking layer have different optical properties. The light-blocking portions are designed to block light at specific positions, while the light-emitting portions are designed to emit light efficiently. This local differentiation of properties optimizes the overall lighting efficiency by ensuring light is blocked only where necessary and emitted efficiently where required.

The patent converts the previously harmful light absorption by the masking layer into a beneficial function. The light-blocking portions strategically block light to direct it toward the light-emitting portions, which then efficiently emit the light. This converts what was previously wasted absorbed light into useful emitted light, maintaining brightness without requiring additional or brighter light sources, thereby reducing production cost.

The masking layer acts as an intermediary between the light source and the display area. Instead of directly controlling light emission, it mediates by blocking light in certain regions and allowing it to pass through in other regions, thereby efficiently directing light to where it is needed without requiring additional light sources.