OLED Encapsulation Mask With Reinforced Ribs To Prevent Sagging
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Solution Overview
Problem
The manufacturing process of OLED display devices faces challenges in achieving uniform encapsulation due to sagging mask strips, leading to excessive deposition and cracks during the encapsulation of display panels, which affects the encapsulation effectiveness and panel performance.
Innovation Solution
A mask design featuring a main body with reinforced ribs, where the ribs are narrower than the main body, providing structural support to maintain the mask strips on the same horizontal plane, reducing sagging and improving fitment over the panel, thereby enhancing the uniformity and consistency of the encapsulation film layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the mask strip is made thinner to reduce weight, then the weight is reduced, but the mask strip sags during the encapsulation process
Solution Approach 1:
The mask strip structure is designed with different local properties: the main body has a certain thickness for flexibility, while the reinforced rib has increased thickness (1.5-3 times the main body thickness) to provide local structural support and prevent sagging, thus resolving the contradiction between overall weight reduction and local stability
2Ease of operation
If the mask strip sags, then the mask fits the panel, but excessive deposition occurs and cracks form
Solution Approach 1:
The reinforced rib structure is designed in advance to counteract the sagging force before the encapsulation process begins. By providing preemptive structural support through the rib, the mask maintains its intended geometry and prevents excessive deposition and cracking during operation
3Stability of the object's composition
If the mask strip is made thicker to prevent sagging, then the stability is improved, but the weight and complexity increase
Solution Approach 1:
The mask strip is segmented into functional zones: a thinner main body for flexibility and weight reduction, and a localized reinforced rib for structural support. This segmentation allows the mask to achieve stability without uniformly increasing thickness throughout the entire structure, thus reducing overall complexity
Data Source
AI summary
A mask is provided. The mask includes at least one first mask strip. The first mask strip includes a main body and at least one reinforced rib; the main body includes a plate surface defined by a first direction and a second direction, the first direction intersects with the second direction, and the main body extends along the first direction; and the at least one reinforced rib is on the plate surface of the main body and extends along the first direction, and a width of the at least one reinforced rib in the second direction is smaller than a width of the main body in the second direction.