Fig. 1. The structure of the flip-flop Micro LED model based on ray tracing method

Fig. 2. The structure of Micro LED with surface roughening

Fig. 3. The structure of the 2-D grating

Fig. 4. Blue sub-pixel point models of three Micro LEDs with different luminous surfaces

Fig. 5. Variation trend of LEE with α in blue sub-pixels of three different structures

Fig. 6. Light intensity distribution of three kinds of blue sub-pixels at different side-wall angles

Fig. 7. The structure of the red and green sub-pixel model with a sidewall fully reflective light-blocking medium and 34° tilt angle

Fig. 8. Emission spectrum of sub-pixels

Fig. 9. Light intensity distribution of sub-pixels with different Micro LED structures

Fig. 10. The red, green and blue normalised light intensity distributions at different structured pixel points and CIE coordinates for 10 reference colors at 0°~80° viewing angle