Display Panel Bending for Dead Space Reduction
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Solution Overview
Problem
Existing display devices face challenges in minimizing dead space and enhancing internal space utilization due to the presence of non-display areas, which limits the compactness and design flexibility of the devices.
Innovation Solution
The display device incorporates a display panel with strategically bent portions, including a first bending portion in the display area and a second bending portion in the non-display area, with specific curvature radii to minimize visibility of the non-display area and accommodate flexible printed circuit boards and driving circuit chips, while using a supporter to maintain the bent state and prevent damage to wires and elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a non-display area is provided to accommodate pad portions and circuit boards, then ease of manufacture and device functionality are improved, but dead space increases and internal space utilization deteriorates
Solution Approach 1:
The non-display area is bent along a bending line to extend it in the third direction (thickness direction), transforming it from a planar area to a three-dimensional structure. This allows the pad portion and circuit board to be accommodated in the bent non-display area, reducing dead space while maintaining ease of manufacture.
Solution Approach 2:
The circuit board is mounted on the bent non-display area, and the pad portion is disposed in the bent non-display area, creating a nested arrangement where components are integrated within the bent structure rather than occupying separate planar space.
2Area of stationary object
If the non-display area is bent to reduce dead space, then internal space utilization is improved, but reliability deteriorates due to potential damage to wires and elements
Solution Approach 1:
The bending radius is specifically controlled to be greater than a predetermined value in the region where wires and elements are located, while other regions can have smaller bending radii. This local differentiation ensures reliability in critical areas while maximizing space utilization in non-critical areas.
3Reliability
If the bending radius is increased to protect wires and elements, then reliability is improved, but dead space increases and internal space utilization deteriorates
Solution Approach 1:
Different regions of the non-display area have different bending radii: regions with wires and elements have larger bending radii to ensure reliability, while regions without sensitive components can have smaller bending radii to minimize dead space and maximize internal space utilization.
Data Source
AI summary
A display device includes a display panel includes a display area in which an image is displayed and a first non-display area in which a pad portion is located. The display panel includes a first bending portion in the display area, the first bending portion being bent at a first curvature radius, and a second bending portion in the first non-display area, the second bending portion being bent at a second curvature radius that is smaller than the first curvature radius.