Bent Touch Display Panel Insulating Layer Height Variation

The patent introduces a stepped structure with different height levels (first height and second height) for the insulating layer, creating a three-dimensional configuration. The touch line is positioned at a lower height level in the bent area, while the insulating layer rises to a higher height level, forming a stepped profile that accommodates bending without cracking the conductive line.

The insulating layer has different heights at different locations: a first height in non-bent areas and a second height (lower than the first) in bent areas where touch lines are positioned. This local variation in insulating layer height provides mechanical protection specifically where needed, allowing the touch lines to remain straight and crack-free in bent regions while maintaining overall panel flexibility.

The patent resolves the contradiction by using vertical dimensionality - the insulating layer creates height differences (first height vs. second height) to accommodate the bent area geometry while keeping the touch line itself straight and horizontal, thus preventing cracking while enabling panel bending capability.

The insulating layer acts as an intermediary structure between the bent area geometry and the touch line. By providing a stepped configuration with varying heights, the insulating layer mediates the mechanical stress of bending, allowing the touch line to remain straight and protected while the overall panel structure can be bent.