LCD Pad Light Leakage via Film Segmentation

The patent introduces a black pattern layer as an intermediary component positioned between the gap space and the substrate. This black pattern layer acts as a mediator that absorbs or blocks light that would otherwise enter through the gap space, preventing both pad deterioration from heat and light leakage issues. The black pattern layer is disposed on the substrate in the gap space region, creating a protective barrier that addresses both concerns simultaneously.

The patent applies segmentation by dividing the film arrangement into distinct regions: the optical film is positioned to be separated from the pad area, while the first polarizing film extends to overlap the pad. This segmentation allows the optical film to avoid the high-temperature pad region (preventing gas eruption and deterioration) while the polarizing film maintains coverage for optical functionality. The side sealant also segments the boundary region, providing both mechanical sealing and thermal isolation.

The black pattern layer serves as an intermediary element that is easily manufactured by printing or coating techniques on the substrate. This layer fills the gap space region and provides a simple manufacturing solution to block light paths. The black pattern layer can be applied using conventional display manufacturing processes, maintaining ease of manufacture while effectively preventing light formation and light leakage that would occur with complex film positioning adjustments.