Fig. 1. Mechanism of dark stress

Fig. 2. CCD intensity imaging

Fig. 3. Schematic of warpage test

Fig. 4. Diagram of lift bar movement

Fig. 5. Warping of panel at different positions on the glass

Fig. 6. Warping of panel at different running speeds of lift bar

Fig. 7. Variation of POL shrinkage with temperature

Fig. 8. The influence of optical adhesive on black uniformity

Fig. 9. Mechanism of light leakage at IC bonding

Fig. 10. The influence of ACF model on black uniformity

Fig. 11. Main effect diagram of thickness on black uniformity

Fig. 12. Result of black uniformity improvement