Display Panel Through-Hole Graphic Marks for Accurate Hole Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting hole accuracy in display panels, particularly for OLEDs with through holes, are inaccurate due to the proximity of isolation columns and the difficulty in identifying the correct distance from the edge of the hole to these columns, which can lead to incorrect positioning and reduced screen-to-body ratio in full-screen designs.
Innovation Solution
Incorporating graphic marks in the isolation area around the through hole, which are spaced apart and have clear patterns, allowing for precise positioning and measurement by an optical detector to determine the hole accuracy, thereby improving the accuracy of hole detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If isolation columns are placed close to the through hole to maintain display area, then manufacturing precision is improved, but measurement precision deteriorates due to difficulty in identifying correct distance
Solution Approach 1:
Graphic marks are introduced as intermediary reference objects between the through hole and isolation columns. These marks serve as mediators for measurement, allowing the detection system to accurately determine hole positioning by referencing the known positions of the graphic marks rather than directly measuring from the isolation columns, thus resolving the measurement precision issue while maintaining close spacing
Solution Approach 2:
The graphic marks create a reference copy or model of the ideal positioning system. By having clearly identifiable graphic marks with known geometric relationships, the system establishes a reference framework that enables accurate measurement and detection, effectively copying the function of ideal measurement references into the actual manufacturing structure
2Area of stationary object
If through hole is positioned accurately for full screen design, then screen-to-body ratio is improved, but device complexity increases due to need for precise detection systems
Solution Approach 1:
The graphic marks enable the detection system to self-calibrate and automatically determine positioning accuracy without requiring complex external reference systems. The marks are designed with clear geometric features that allow the detection system to autonomously identify positions and calculate accuracy, reducing overall system complexity while achieving precise full-screen positioning
3Measurement precision
If graphic marks are added in isolation area for detection, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The graphic marks are merged with the existing isolation area structure rather than being separate additional components. The marks are integrated into the isolation region's pattern layer, combining the isolation function with the measurement reference function in a single structural element, thus improving measurement precision without significantly increasing overall device complexity
Data Source
AI summary
Provided is a display panel, including a through hole, an isolation area, and a display area. The isolation area is around the through hole. The isolation area is between the through hole and the display area. The isolation area includes at least two graphic marks for detecting the hole accuracy of the through hole. The at least two graphic marks are spaced apart from each other around the through holes. Graphic marks are arranged in an isolation area of a display panel. The isolation area is between a through hole and a display area. That is, the graphic marks are around the through hole.