Fig. 1. Diagram of the entrance side of the loudspeaker type light

Fig. 2. Basic flow of simulation

Fig. 3. Side diagram of backlight module with U-shaped light guide plate

Fig. 4. Structural side view of backlight module with 4 mm conventional side-in backlight module

Fig. 5. Model diagram of backlight module with U-shaped light guide plate

Fig. 6. Diagram of density distribution of three kinds of backlight modules

Fig. 7. Brightness diagram of three kinds of backlight modules

Fig. 8. Diagram of shifting

Fig. 9. Variation diagram of brightness uniformity and luminous efficiency with shifting

Fig. 10. Luminance distribution with shifting of 0.1 mm, 0.3 mm, and 0.5 mm