Notched Display Panel Layout for Scan-Data Coupling Isolation
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Solution Overview
Problem
The presence of a notch area in display panels for accommodating front-facing devices causes coupling effects between scanning lines and data lines, leading to signal interference and degraded display performance.
Innovation Solution
A display panel design that includes a notch area with a first non-display area where scanning and data lines are arranged to minimize coupling, featuring connecting through holes and auxiliary through holes to reduce signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scanning lines and data lines are arranged in the first non-display area to connect the notch area and display area, then electrical connectivity is achieved, but signal interference occurs due to coupling effects between the lines
Solution Approach 1:
The patent extracts the harmful coupling effect by introducing auxiliary through-holes that selectively remove insulating material between adjacent transmission lines. This creates isolation regions that separate the scanning and data transmission lines, eliminating the capacitive coupling that causes signal interference while preserving the electrical connectivity function.
Solution Approach 2:
The auxiliary through-holes act as intermediary isolation structures between the scanning transmission lines and data transmission lines. These through-holes filled with conductive or insulating materials serve as mediators that control the electromagnetic interaction between adjacent lines, reducing signal interference while maintaining necessary electrical connections.
2Ease of operation
If transmission lines are routed through the first non-display area, then connectivity between notch and display areas is established, but the coupling effect between scanning and data lines degrades display performance
Solution Approach 1:
The patent removes portions of the insulating layer through auxiliary through-holes to create isolation zones between transmission lines in the first non-display area. This extraction of insulating material prevents capacitive coupling between scanning and data lines, thereby maintaining display performance while preserving connectivity functionality.
Solution Approach 2:
The patent applies different local properties to different regions: auxiliary through-holes are strategically positioned at specific locations where coupling occurs between transmission lines. The through-holes are filled with materials having different electrical properties (conductive or insulating) depending on the local isolation requirements, creating localized quality variations that reduce interference while maintaining overall connectivity.
Data Source
AI summary
Disclosed are a display panel and a display apparatus. The display panel includes: a base substrate including a notch area, a display area and a first non-display area between the notch area and the display area; a first conductive layer on the base substrate; a target insulating layer between the first conductive layer and the base substrate; and a functional layer between the target insulating layer and the base substrate. The display area includes a plurality of sub-pixels, and at least one of the plurality of sub-pixels includes a connecting through hole, wherein the connecting through hole runs through the target insulating layer, and the first conductive layer is electrically connected to the functional layer by the connecting through hole. The first non-display area includes at least one auxiliary through hole which runs through the target insulating layer and is not filled with a conductive material.