Electronic Panel Sensing Pattern for Hole Defect Detection
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Solution Overview
Problem
Existing electronic apparatuses face challenges in easily determining cracks or defects in the electronic panel, particularly when forming holes, and in assessing the integrity of sensing electrode patterns and insulation layers, including those with organic materials.
Innovation Solution
The electronic apparatus incorporates a design with a display unit and input sensor featuring a base substrate with signal transmission, active, and peripheral regions, along with sensing electrode patterns and a sensing circuit. The sensing pattern is arranged to overlap the signal transmission region, with extension and connection portions surrounding a hole, allowing for the detection of defects through capacitance changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hole is formed in the electronic panel, then the electronic module can be mounted, but cracks or defects may occur that are difficult to detect
Solution Approach 1:
The sensing pattern is formed in advance during the manufacturing process, positioned to overlap the hole region. This preliminary arrangement enables defect detection capability to be built into the structure before the hole is formed, allowing cracks to be detected immediately after hole formation without additional inspection steps.
Solution Approach 2:
The sensing pattern serves multiple functions: it acts as part of the input sensor for touch detection and simultaneously serves as a defect detection mechanism. By overlapping the hole region, it can detect cracks, delamination, or other defects that occur during hole formation, eliminating the need for separate inspection circuits.
2Difficulty of detecting and measuring
If additional inspection circuits are added to detect defects, then detection capability improves, but device complexity increases
Solution Approach 1:
The sensing pattern is merged with the input sensor structure, using the same conductive material and manufacturing process. The sensing pattern that detects touch input also detects defects, combining two functions into one structure and eliminating the need for separate inspection circuits.
Solution Approach 2:
The input sensor's own sensing pattern serves the dual purpose of touch detection and defect detection. The system uses its inherent structure to monitor its own integrity, with the sensing pattern automatically detecting cracks or defects without requiring external inspection devices.
3Measurement precision
If the sensing pattern is positioned to detect defects, then detection accuracy improves, but the input sensor's sensing performance may be affected
Solution Approach 1:
The sensing pattern has different configurations in different regions: in the active region, it provides uniform touch sensitivity, while in the signal transmission region overlapping the hole, it is positioned to maximize defect detection capability. This local differentiation allows both sensing performance and detection precision to be optimized in their respective zones.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enables efficient detection of cracks and defects in the electronic panel and sensing electrode patterns, improving the reliability of the electronic apparatus by simplifying the inspection process without the need for additional inspection circuits or devices.
Implementation Method 1
allowing for the detection of defects through capacitance changes
Data Source
AI summary
An electronic apparatus including a display unit having a signal transmission region, an active region surrounding at least a portion of the signal transmission region, and a peripheral region adjacent to the active region, and an input sensor including sensing electrodes each having a plurality of sensing electrode patterns which overlap the active region and a sensing circuit having a sensing pattern overlapping the signal transmission region and a sensing line connected to the sensing pattern, and on the display unit, wherein a hole passing through the display unit and the input sensor is defined to correspond to the signal transmission region, and in a plan view, a portion of the sensing pattern either overlaps the floating pattern or is between the sensing electrode patterns and the floating pattern, and the other portion of the sensing pattern is between the floating pattern and the hole.