Fig. 1. Reflective color filter array with backlight under（a）off state，and（b）on state.

Fig. 2. （a）Light intensity and（b）transmittance of the three primary colors

Fig. 3. Diagram of the red light path. The top section shows the reflection of the red light by green pixels，while the bottom section shows the reflection by blue pixels.

Fig. 4. Relationship between net gain and transmittance coefficient γ²

Fig. 5. Overall structure and filtering principles of（a）red，（b）green，and（c）blue color filters.

Fig. 6. （a）Transmission and（b）reflection spectra of three primary color filters

Fig. 7. （a）Transmittance of the three primary color filters，transmitted light intensity of the three primary colors for（b）YAG-LED and（c）QD backlight.

Fig. 8. Using YAG-LED backlight，（a）the emitted light intensity and（b）color gamut with different color filters.

Fig. 9. Using QD backlight，（a）the emitted light intensity and（b）color gamut with different color filters.

Fig. 10. Relationship between the transmittance of（a）red，（b）green，and（c）blue color filters and the polar angle.

Fig. 11. Light intensity distribution varied with polar angles for（a）YAG-LED and（b）QD backlight

Fig. 12. Different color gamut at different polar angles for（a）YAG-LED and（b）QD backlight

Fig. 13. Relationship between light efficiency，color gamut，and polar angles for（a）YAG-LED and（b）QD backlight.

Fig. 14. Transmittance of the normal direction and average transmittance of polar angle range within 20° for（a）red，（b）green，and（c）blue color filters.

Fig. 15. After averaging of polar angle range within 20°，（a）the transmittance of different primary color filters，（b）color gamut under two backlight sources，the intensity of emitted light for（c）YAG-LED and（d）QD backlight.