Front light module and display device

A display device, comprising:

• a cover plate;
• a front light module disposed below the cover plate, wherein the front light module comprises:
• a light source, comprising a linear light strip comprising a plurality of light-emitting diode elements;
• and
• a light guide plate disposed substantially on a same plane as the light source, the light guide plate comprising two surfaces, the two surfaces being opposing and substantially parallel, wherein one of the two surfaces comprises a plurality of microstructures and the other of the two surfaces is free of any microstructures;
• wherein, within a visible area, a distribution density of the plurality of microstructures and distances from the plurality of microstructures to the light source satisfy the following equation:
• y=Kxn, wherein
• y represents the distribution density of the plurality of microstructures, measured in units number pre square millimeter;
• x represents a distance from a sampling centerline to a side of the light guide plate closer to the light source, measured in units of millimeter;
• K is a constant;
• and
• n is a value ranging from 1.5 to 3.0, wherein,
• each of the plurality of microstructures located at one end of the light guide plate farther from the light source has an occupied area greater than that of each of the plurality of microstructures located at a second end of the light guide plate closer to the light source;
• or
• each of the plurality of microstructures located at the one end of the light guide plate farther from the light source has an occupied area equal to that of each of the plurality of microstructures located at the second end of the light guide plate closer to the light source;
• or
• each of the plurality of microstructures located at the second end of the light guide plate closer to the light source has an occupied area greater than that of each of the plurality of microstructures located in a central region between the one end and the second end of the light guide plate, and each of the plurality of microstructures located in the central region between the one end and the second end of the light guide plate has an occupied area equal to that of each of the plurality of microstructures located at the one end of the light guide plate farther from the light source,
• a reflective display module disposed below the front light module;
• and
• a housing having a rectangular bottom surface and four sidewalls connected to the rectangular bottom surface, the rectangular bottom surface and the four sidewalls together defining an accommodating space, the accommodating space being configured to house the reflective display module, the front light module, and the cover plate.