Display Driver Placement on Curved Panel Edges
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Solution Overview
Problem
Conventional liquid-crystal display devices with curved edges or surfaces increase manufacturing costs and decrease yield due to difficulties in affixing and maintaining display drivers on these curved segments.
Innovation Solution
The display device features display drivers positioned on edge areas with adjusted distances and orientations to avoid high-curvature segments, using flexible circuit boards and driving chips to ensure stable affixation and reduce wire density on curved areas, thereby reducing signal interference and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If display drivers are positioned on curved edge segments of the display panel, then the display device can accommodate various shapes and degrees of curvature, but the manufacturing cost increases and yield decreases due to difficulties in affixing and maintaining display drivers on curved segments
Solution Approach 1:
The display panel edge is divided into multiple segments with different curvature characteristics. Display drivers are selectively positioned on low-curvature or linear segments rather than uniformly across all curved segments, allowing the system to accommodate various display shapes while avoiding the manufacturing difficulties associated with high-curvature areas.
Solution Approach 2:
Different regions of the display panel edge are treated differently based on their curvature properties. Low-curvature segments are suitable for display driver placement, while high-curvature segments are avoided for driver placement but may still be used for the display surface. This local differentiation resolves the contradiction by allowing shape adaptability where needed while maintaining ease of manufacture where critical components are placed.
2Reliability
If display drivers are arranged with adjusted distances to avoid high-curvature segments, then stable affixation is achieved, but the distance between adjacent display drivers becomes non-uniform
Solution Approach 1:
Instead of attempting to maintain uniform driver spacing while forcing drivers onto curved surfaces (which causes affixation problems), the approach is inverted: uniform spacing is abandoned in favor of placing drivers only on suitable low-curvature segments. This inversion prioritizes affixation stability over spacing uniformity, resolving the contradiction by accepting non-uniform distances as a necessary consequence of avoiding high-curvature areas.
3Object-affected harmful factors
If wire density is reduced on curved areas, then signal interference is minimized, but the complexity of routing connections increases
Solution Approach 1:
Display drivers are extracted from high-curvature segments and placed only on low-curvature segments. This extraction removes the source of wire density problems from curved areas, thereby minimizing signal interference on curved segments. The trade-off of increased routing complexity is accepted as a necessary consequence of achieving low wire density on curved surfaces.
Data Source
AI summary
A display device includes a display panel and display drivers disposed on the display panel. The distance between a first display driver and a second display driver of the display drivers is greater than the distance between a second display driver and a third display driver of the display drivers. The display panel includes a curved segment adjacent to an area between the first display driver and the second display driver.