|
This thesis improves the process capability of high-resolution products of color filter factory. By the Six Sigma Methodology which follows the steps including define, measure, analyze, improve, and control, the Black Matrix Process of Color Filter process capability is thus enhanced.
Firstly, the key quality characteristics are defined and the accuracy of the measurement system is confirmed. Then, the key factors which affect the quality characteristics are found. Finally, L8 orthogonal table from Taguchi method is applied to reduce experimental times and the optimal parameters via Taguchi’s two-stage optimization are found. The experimental results showed that after the improvement of the optimal parameters, we can make high-resolution products with the black matrix line width stability in the 7 ± 1.5μm range and the Black matrix process capability index improvement from 1.38 to 1.89 that is better than the expected value (Cpk > 1.67). The experimental results showed that the method improves the black matrix process capability effectively.
|