Display Panel Insulating Layer Depression Point Compensation
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Solution Overview
Problem
In display devices, the non-uniformity in the thickness of insulating layers over conductive layers leads to short circuits due to the formation of depression points, causing contact between conductive layers and resulting in element failures.
Innovation Solution
A display panel structure is implemented with a third insulating layer that overlaps depression points on the second insulating layer, ensuring a thicker layer at these points to prevent short circuits, and is configured to be flat over step portions and residual areas, using organic insulating materials like benzocyclobutene to maintain uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If insulating layers are laminated over conductive layers with steps, then the insulating layer thickness becomes non-uniform, but this causes short circuits between conductive layers at depression points
Solution Approach 1:
The patent applies local quality by forming a compensation insulating layer specifically at depression points where short circuits occur. This local addition of insulating material thickness at critical locations (depression points) resolves the thickness non-uniformity issue without requiring complete redesign of the entire insulating layer structure, thereby preventing short circuits between conductive layers while maintaining manufacturing feasibility
Solution Approach 2:
The patent implements preliminary action by proactively identifying and compensating for depression points before they cause short circuits. The compensation insulating layer is formed in advance at locations where thickness non-uniformity is anticipated to occur, preventing the harmful effect of short circuits before they happen during device operation
2Reliability
If the insulating layer thickness is increased to prevent short circuits, then the device structure becomes more complex, but this may affect manufacturing ease
Solution Approach 1:
Instead of uniformly increasing insulating layer thickness throughout the entire device structure, the patent applies the compensation insulating layer only at specific depression points. This localized approach prevents short circuits without adding unnecessary complexity to the overall device structure, maintaining manufacturing ease while improving reliability
Solution Approach 2:
The patent applies partial action by adding insulating material only where needed (at depression points) rather than uniformly across the entire structure. This selective compensation prevents short circuits without creating excessive complexity, as the compensation layer is formed only in specific regions where thickness non-uniformity causes problems
Data Source
AI summary
There are provided a display panel and a display device including the same. In the display panel and display device including the same, in a structure in which an insulating layer having a depression point is provided between different conductive layers, another insulating layer may be disposed to cover the depression point. Accordingly, an occurrence of a short circuit may be minimized between the different conductive layers.