Pixel Electrode Markers for Display Panel Repair
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Solution Overview
Problem
The complexity of display panel structures makes it difficult to easily identify and repair defective pixels, as the cut required portion of a defective pixel may not be readily visible in complex connecting structures.
Innovation Solution
Incorporating markers with relatively different positions in pixels to facilitate the repair of defective pixels by defining specific cutting lines based on the marker's position, allowing for easier identification and isolation of defective areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the data line, gate line and pixel structure is made complex to improve display characteristics, then display performance is improved, but the cut required portion of the pixel becomes difficult to identify for repair
Solution Approach 1:
A marker is introduced as an intermediary element within the pixel structure to indicate the position where cutting is required for repairing defective pixels. The marker serves as a visual guide that mediates between the complex internal structure and the repair process, allowing technicians to easily identify the correct cutting location without needing to understand the complex connections.
Solution Approach 2:
The marker is formed using a different material or visual characteristic than the surrounding pixel structures, making it distinguishable. This visual differentiation allows repair technicians to easily locate the marker and understand where cutting should be performed, despite the complexity of the underlying data lines, gate lines and pixel connections.
2Ease of repair
If markers are added to indicate cutting positions, then ease of repair is improved, but device complexity increases
Solution Approach 1:
The pixel structure is segmented into functional areas, with the marker occupying a specific region (such as the corner or edge of the pixel electrode). This segmentation allows the marker to be integrated into the existing pixel structure without requiring complete redesign, thereby limiting the increase in overall device complexity while still providing the necessary repair guidance.
Solution Approach 2:
The marker is formed using a simple material layer (such as a photosensitive resin layer or insulating layer) that is already part of the pixel structure. This approach uses inexpensive, readily available materials that are disposed of or integrated into the final product, minimizing the added complexity and cost while achieving the repair facilitation goal.
Data Source
AI summary
A display panel includes gate lines, data lines, switching elements connected to the gate lines and the data lines, pixel electrodes connected to the switching elements and markers. The pixel electrode includes first, second third and fourth areas which are divided by a horizontal central line and a vertical central line. The first, second, third and fourth areas correspond to an upper-left portion, an upper-right portion, a lower-left portion and a lower-right portion of a central point of the pixel electrode. When the pixel electrode is disposed between first and second data lines and connected to the first data line, the marker is disposed in one of the first and third areas. When the pixel electrode is disposed between the first and second data lines and connected to the second data line, the marker is disposed in one of the second and fourth areas.