Flexible OLED Block Structure Groove Nesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible OLED devices face defects due to reduced contact area between the block structure and insulating layer, leading to potential leakage and failure, especially as the peripheral region becomes slimmer.
Innovation Solution
Incorporating a block structure with a second block pattern that overlaps the insulating layer's groove or opening, increasing the contact area and using a shock absorbing structure with concave and convex patterns to prevent external impacts and metal particle defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the peripheral region is made slimmer to reduce device size, then the overall device dimensions are reduced, but the contact area between the block structure and insulating layer is reduced leading to contact failure
Solution Approach 1:
The block structure is designed to extend vertically into the groove of the insulating layer structure, utilizing the vertical dimension to increase contact area. This allows the block structure to overlap with the groove and form multiple contact interfaces, compensating for the reduced horizontal contact area caused by the slimmer peripheral region.
Solution Approach 2:
The block structure is positioned to overlap with and nest into the groove of the insulating layer structure. This nesting arrangement maximizes the contact area between the block structure and insulating layer within the constrained space of the slim peripheral region, preventing contact failure while maintaining compact dimensions.
2Area of stationary object
If the block structure width is reduced to fit the slimmer peripheral region, then the device becomes more compact, but the contact surface area is reduced causing contact failure
Solution Approach 1:
Instead of increasing block structure width horizontally, the design extends the block structure vertically into the groove of the insulating layer. This dimensional transition compensates for the reduced width by creating multiple contact interfaces through the groove overlap, maintaining contact stability despite the compact width.
Solution Approach 2:
The block structure is divided into multiple segments or patterns that can independently contact the insulating layer through the groove. This segmentation allows the contact function to be distributed across multiple smaller contact points, maintaining overall contact reliability even when the total width is reduced.
3Length of moving object
If the peripheral region is made slimmer, then the device profile is thinner, but the block structure may experience contact failure due to reduced contact area
Solution Approach 1:
The block structure is designed to nest into the groove of the insulating layer structure, creating a self-aligning configuration. This nesting relationship provides inherent alignment guidance during manufacturing, reducing the precision requirements for contact alignment even in the slimmer peripheral region.
Solution Approach 2:
The groove of the insulating layer structure serves as an intermediary feature that facilitates precise alignment between the block structure and the substrate. By overlapping with this intermediary groove, the block structure achieves accurate positioning without requiring extremely high manufacturing precision in the slim peripheral region.
Data Source
AI summary
An organic light emitting display (OLED) device includes a substrate having a display region and a peripheral region at least partially surrounding the display region. An insulating layer structure is disposed on the substrate within both the display region and the peripheral region. The insulating layer structure includes a groove in the peripheral region. A plurality of pixel structures is disposed in the display region on the insulating layer structure. A block structure is disposed in the peripheral region so as to at least partially overlap the groove of the insulating layer structure. The block structure at least partially fills the groove of the insulating layer structure.