Flexible Display Backboard Alignment via CCD Marking

The patent applies preliminary action by pre-defining mark positions on the first and second backboards before the bonding process. These marks serve as pre-established reference points that guide the alignment during attachment, ensuring that even with reduced bending radius, the backboards can be accurately positioned relative to each other, thereby preventing misalignment and stress concentration while achieving higher screen ratio

The patent uses marks as simplified copies or representations of the intended alignment positions. By creating corresponding marks on both backboards that represent their target relative positions, the complex requirement for high attachment accuracy is transformed into a simpler visual matching task, enabling precise alignment without requiring extremely tight manufacturing tolerances

The patent applies segmentation by dividing the alignment function into separate mark elements on each backboard rather than using a complex integrated alignment mechanism. Each mark is an independent, simple feature that can be easily manufactured and positioned, and the collection of these segmented marks provides the complete alignment information needed for accurate attachment

The marks function as simple, inexpensive reference features that can be easily added to the backboards (through printing, etching, or other low-cost methods). These marks serve their alignment purpose during the bonding process and then fulfill their function, representing a low-cost solution to the alignment problem that avoids complex, expensive alignment mechanisms