Touch Screen Panel Identification Patterns for Inspection
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Solution Overview
Problem
The existing touch screen panels with metal mesh structures face challenges in pattern inspection and repair due to the complexity of the metal mesh structure, leading to reduced productivity as it is time-consuming to identify and repair defects.
Innovation Solution
Incorporating identification patterns on the touch screen panel, which are disposed on the same layer as the bridge electrodes, allows for easier identification of the sensing area and facilitates quicker inspection and repair processes by providing a clear reference guide during the inspection and repair of touch electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal mesh structure is used for touch electrodes, then touch sensitivity is improved, but inspection and repair time increases due to structural complexity
Solution Approach 1:
A dummy pattern layer is introduced as an intermediary between the complex metal mesh touch electrodes and the inspection process. This dummy pattern provides a simplified reference structure that mediates the inspection and repair activities, allowing technicians to quickly identify defect locations without directly analyzing the complicated metal mesh structure, thus reducing inspection time while maintaining touch sensitivity
Solution Approach 2:
A dummy pattern that copies the general layout and structure of the metal mesh touch electrode is created. This copy serves as a reference map that replicates the electrode arrangement without containing the actual functional metal mesh. Inspectors can use this copied structure to quickly locate defects in the original metal mesh electrode, reducing the time required for inspection and repair while preserving the original electrode's touch sensitivity
2Reliability
If metal mesh structure is used for touch electrodes, then touch sensitivity is improved, but device complexity increases making defect location difficult
Solution Approach 1:
The dummy pattern acts as an intermediary representation that simplifies the complex metal mesh structure into an easily analyzable form. It provides a corresponding relationship between the simple reference pattern and the complex functional electrode, enabling defect location without requiring direct analysis of the complicated metal mesh, thus reducing perceived device complexity during inspection
Solution Approach 2:
A simplified copy of the metal mesh electrode structure is created in the form of a dummy pattern. This copy retains the essential geometric relationships and layout information needed for defect localization, but eliminates the functional complexity of the actual metal mesh. The copying principle allows inspectors to work with a simplified representation while the original complex structure maintains its touch sensitivity function
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
The use of identification patterns significantly reduces the time required for pattern inspection and repair, enhancing productivity by clearly distinguishing the boundary areas between touch electrodes and the sensing area, thus improving the efficiency of the process.
Implementation Method 1
The touch screen panel generates touch information, based on a capacitance variation between a first touch electrode and a second touch electrode
Data Source
AI summary
Disclosed are a touch screen panel and a display apparatus with integrated touch screen, in which a pattern inspection process and a repair process are easily performed on touch electrodes. The touch screen panel includes a plurality of first touch electrodes, a plurality of second touch electrodes spaced apart from the plurality of first touch electrodes, a plurality of bridge electrodes electrically connecting the plurality of second touch electrodes, and a plurality of identification patterns disposed in respective outer portions of the plurality of first touch electrodes and the plurality of second touch electrodes.