Display Panel Pad Structure for GIP Defect Detection
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Solution Overview
Problem
Abnormal gate driving in display devices can degrade image quality, and existing technologies lack effective methods to detect and prevent defects in display panels.
Innovation Solution
A display panel and device incorporating a gate-in-panel (GIP) technique with a gate driving panel circuit, including a defect detection pad and wiring structure for stable signal and power supply, to detect and prevent defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a gate driving panel circuit is disposed on the substrate using GIP technique, then gate driving functionality is integrated into the panel, but the complexity of the panel structure increases
Solution Approach 1:
The patent merges the gate driving circuit functionality directly into the display panel substrate by disposing the gate driving panel circuit on the substrate. This integration combines what were previously separate components (gate driver and display panel) into a single unified structure, achieving functionality integration while managing complexity through systematic design of the circuit layout and wiring structures.
2Reliability
If a defect detection line is disposed further outwardly than the clock signal lines, then defect detection capability is enhanced, but the wiring structure complexity increases
Solution Approach 1:
The patent segments the detection functionality by providing separate defect detection lines that are distinct from the clock signal lines. These detection lines are disposed further outwardly than the clock signal lines, creating dedicated pathways for defect detection. This segmentation enhances detection capability while managing wiring complexity through organized spatial arrangement and clear functional separation.
3Reliability
If multiple clock pads and defect detection pads are disposed in the pad area, then signal supply and defect detection are improved, but the pad area occupancy increases
Solution Approach 1:
The patent implements multi-functionality in the pad area by disposing both clock pads for signal supply and defect detection pads for defect detection within the same pad region. These pads serve multiple purposes: clock pads supply clock signals to the gate driving panel circuit, while defect detection pads enable external connection for defect detection. This multi-functional approach improves reliability without requiring completely separate areas, optimizing space utilization.
Data Source
AI summary
The present disclosure relates to a display panel and a display device that have a pad structure including a defect detection pad and configured to be suitable for a structure in which a gate driving panel circuit is disposed. The display panel and the display device provide advantages of detecting in advance a possibility that a defect accident may occur in the display panel and preventing such a defect accident in the display panel.