Display Panel Black Matrix Grooves Against Water Vapor Intrusion

The black matrix is segmented by introducing grooves that divide it into multiple regions. These grooves create physical barriers that interrupt continuous water vapor penetration paths, forcing water vapor to navigate around multiple obstacles rather than following a direct route through the black matrix.

The grooves act as intermediary structures between the black matrix and the water vapor. By introducing these intermediate features, the patent creates additional interfaces and barriers that water vapor must interact with, effectively blocking the direct intrusion path while maintaining the black matrix's light-shielding function.

The grooves are strategically positioned only in specific regions where water vapor intrusion is most likely to occur, rather than uniformly across the entire black matrix. This localized approach blocks water vapor paths in critical areas while preserving the light-shielding integrity in other regions, thereby minimizing light leakage.

Instead of creating complete continuous barriers that would fully block light, the patent uses partial grooves that provide sufficient water vapor blocking in critical paths while leaving portions of the black matrix intact to maintain optical performance. The grooves are designed with optimal depth and width to achieve the minimum necessary blocking effect.