Display Panel Bending Area Boundary for Large Rounded Corners
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Solution Overview
Problem
Conventional display panel designs struggle to achieve a larger rounded corner, which is necessary for special-shaped OLED displays, as the existing designs face challenges in compressing the size of binding terminals and the distance between them, limiting the extension length of the wiring area and making it difficult to further enhance the rounded corner design.
Innovation Solution
The display panel design includes a bending area with a first boundary closer to the display area, where the extension length of the first boundary is smaller than the wiring area, allowing for a larger rounded corner by optimizing the position of sub-pixels and the flexible circuit board, enabling a four-side curved design while maintaining the integrity of the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the extension length of the first boundary of the bending area is reduced to achieve a larger rounded corner, then the rounded corner size is improved, but the wiring area coverage may be insufficient
Solution Approach 1:
The patent positions the first boundary of the bending area such that its vertical projection falls within the wiring area coverage, effectively utilizing the wiring area's extension in the first direction to compensate for the reduced extension length of the first boundary. This dimensional arrangement allows the rounded corner to be enlarged without compromising the wiring area's functional coverage.
Solution Approach 2:
The patent applies different design characteristics to different regions: the bending area has a reduced extension length of the first boundary to enable larger rounded corners, while the wiring area maintains sufficient extension length to provide adequate coverage. This localized differentiation resolves the contradiction by allowing each area to optimize its own dimensions for its specific function.
2Shape
If the position of sub-pixels in the last sub-pixel row is optimized to enable four-side curved design, then the display panel's curvature and rounded corner are improved, but the manufacturing complexity increases
Solution Approach 1:
The patent divides the display panel into distinct functional areas (display area, wiring area, bending area) with clearly defined boundaries and characteristics. The bending area is further segmented by the first boundary with specific geometric constraints, allowing each segment to be optimized independently for its function while simplifying the overall manufacturing process through modular design.
3Shape
If the extension length of the first boundary is reduced to achieve larger rounded corner, then the rounded corner design is improved, but the stress concentration at connecting corners increases
Solution Approach 1:
The patent utilizes curved boundaries and rounded corners throughout the display panel design, including the first boundary of the bending area and the overall panel shape. This continuous curvature eliminates sharp angles that would concentrate stress, allowing the rounded corner design to be enlarged without creating stress concentration points, thus resolving the contradiction between rounded corner size and stress distribution.
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel includes a display area, a wiring area, and a bending area connecting the display area and the wiring area; the bending area includes a first boundary on a side closer to the display area; in the first direction, an extension length of the first boundary is less than an extension length of the wiring area; in the second direction, a vertical projection of the first boundary in the wiring area is located within the coverage of the wiring area; in the second direction, the display area includes sub-pixel rows, and the last sub-pixel row is located on a side of the display area closer to the wiring area; in the first direction, a first sub-pixel in the last sub-pixel row is located on a side of the wiring area boundary closer to the center of the display panel.