Display Panel Support Structure for Encapsulation Stability
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Solution Overview
Problem
In display panels, the support columns are easily crushed during the encapsulation process, leading to uneven cell thickness and negatively impacting display performance.
Innovation Solution
The display panel design includes a first support structure in the display area and a second support structure in the bezel area, with the second support structure extending along the edge of the display area and being positioned on the side of the encapsulation adhesive facing the display area. The second support structure and encapsulation adhesive are maintained at an equal distance from each other within a preset error range, and the second support portions have a larger orthographic projection area than the first support portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If support columns are used to support the second substrate, then the cell thickness uniformity is improved, but the support columns are easily crushed during the encapsulation process
Solution Approach 1:
The support structure is divided into multiple support portions (first support portions in the display area and second support portions in the bezel area) that are distributed at different locations. This segmentation allows the support function to be distributed across multiple points, reducing the load on each individual support portion and preventing crushing during encapsulation while maintaining cell thickness uniformity.
Solution Approach 2:
Different support portions are designed with different properties: the second support portions in the bezel area have larger orthographic projection areas compared to the first support portions in the display area. This local differentiation allows the bezel area supports to bear greater loads during encapsulation, preventing crushing, while the display area supports maintain precise cell thickness control.
2Reliability
If the second support structure is placed closer to the display area, then the support effectiveness is improved, but the risk of crushing during encapsulation increases
Solution Approach 1:
The second support portions are pre-positioned in the bezel area at equal distances from the encapsulation adhesive before the encapsulation process begins. This preliminary positioning ensures that when the encapsulation adhesive is applied, the support portions are already in optimal locations to provide support while being protected from crushing by the adhesive material.
Solution Approach 2:
The bezel area acts as an intermediary zone between the display area and the encapsulation adhesive. By placing the second support portions in this intermediary bezel area rather than directly in the display area, the supports can effectively support the second substrate while being protected from direct contact with the encapsulation adhesive, thus reducing crushing risk.
3Strength
If the support structure is designed with larger orthographic projection area, then the deformation resistance is improved, but the device complexity increases
Solution Approach 1:
The support structure employs local quality differentiation where only the second support portions in the bezel area have larger orthographic projection areas, while the first support portions in the display area maintain smaller sizes. This localized approach provides enhanced deformation resistance where needed (in the bezel area during encapsulation) without increasing the overall device complexity across the entire display structure.
Data Source
AI summary
A display panel and a display apparatus are described. In an embodiment, the display panel includes a display area and a bezel area; a first support structure located in the display area, the first support structure including a plurality of first support portions; an encapsulation adhesive located in the bezel area; a second support structure located in the bezel area. In an embodiment, at different positions of the bezel area, the second support structure and the encapsulation adhesive are at an equal distance from each other within a preset error range; the second support structure includes at least one second support portion; and in a direction perpendicular to a plane in which the display panel is located, at least some of the second support portions each has orthographic projection area larger than orthographic projection area of the first support portion.