Fig. 1. Structure diagram of LCD and the on/off states of pixels on the screen

Fig. 2. Several common display modes of LCD

Fig. 3. Photographs of an LCD at different viewing angles（without ambient light）

Fig. 4. Improved viewing angle uniformity of LCD by using the directional backlight and front diffuser^［29］

Fig. 5. Improved brightness uniformity of LCD based on quantum dot color filter^［31］

Fig. 6. High-contrast LCD based on local dimming technology^［46］

Fig. 7. Moth-eye antireflection film and its effect before and after application^［54］

Fig. 8. Low gamma shift protruded FFS LCD based on single-domain electrode structure^［73］

Fig. 9. Low gamma shift and color difference LCD based on main and sub-pixels^［83］

Fig. 10. High color gamut LCD based on the dual-cell helical filter^［91］

Fig. 11. Two-dimensional anti-peep film for narrow viewing angle^［95］

Fig. 12. Narrow viewing angle blue-phase LCD based on +a/-c/-a compensation film^［98］

Fig. 13. Specified viewing angle control technology based on viewing angle deflection film^［102］

Fig. 14. Viewing angle controllable technology based on dual-pixel structure^［107］

Fig. 15. Viewing angle controllable technology based on dual-cell structure^{［108-109］}

Fig. 16. Viewing angle controllable technology based on electrode bias method^［115］