Display Panel Support Height Control for Uniform Deformation During Drops
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Solution Overview
Problem
Existing display panels suffer from non-uniform deformation and damage due to differences in supporting force between the active and non-active areas, leading to structural weaknesses during drops.
Innovation Solution
The display panel design ensures a difference in distance from the top of support parts to the substrate is within a preset value, balancing the supporting force between the active and non-active areas by using first and second support parts with controlled height differences and openings in the pixel definition layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the support parts in the active area are made taller to increase supporting force, then the supporting force in the active area is improved, but the deformation uniformity between active and non-active areas deteriorates
Solution Approach 1:
The patent applies local quality by creating different support part configurations in different areas. The active area has support parts with greater height (first support parts) while the non-active area has support parts with smaller height (second support parts), allowing each area to have locally optimized properties for its specific functional requirements
Solution Approach 2:
The support layer is segmented into multiple support parts with different heights and positions. By dividing the support structure into discrete elements (first support parts in active area, second support parts in non-active area), the patent can independently optimize the supporting characteristics of each region to achieve both adequate support force and uniform deformation
2Strength
If the support parts are made taller to increase screen strength, then the strength is improved, but the difference in supporting force between active and non-active areas increases causing non-uniform deformation
Solution Approach 1:
Different regions of the display panel are given different support part heights tailored to their specific needs. The active area receives taller support parts for enhanced strength where pixels are located, while the non-active area receives shorter support parts, creating local quality variations that optimize both strength and deformation uniformity
Solution Approach 2:
The support structure is designed with dynamic characteristics through varying support part heights across different areas. This creates a gradient or stepped support system that adapts to the different mechanical requirements of the active and non-active areas, allowing the structure to deform uniformly under external forces while maintaining adequate screen strength
Data Source
AI summary
The present application discloses a display panel and a display device. The display panel includes: a substrate; a pixel definition layer disposed on a side of the substrate, the pixel definition layer including first openings in the active area and second openings in the non-active area; and a support layer including first support parts and second support parts, the first support parts being disposed adjacent to the first openings, and the second support parts being disposed adjacent to the second openings. In a thickness direction of the display panel, a difference value between a distance from the top of a side of the first support part facing away from the substrate to the substrate and a distance from the top of a side of the second support part facing away from the substrate to the substrate is less than or equal to a preset difference value.