Display Electrode Markings for Precise Defect Repair
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Solution Overview
Problem
Current display devices face challenges in accurately repairing defects, particularly due to the lack of precise methods for identifying and addressing issues in light-emitting elements, which can lead to inefficiencies and reduced performance.
Innovation Solution
A display device design featuring electrodes with markings that provide precise coordinate information for defect identification, allowing for targeted repair of light-emitting elements through the application of driving voltages and laser removal based on generated coordinate information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional repair methods are used without precise coordinate identification, then the repair process is simpler, but defect detection accuracy and repair precision deteriorate
Solution Approach 1:
Markings are formed on the first electrode during the manufacturing process before the display device is put into service. These markings serve as pre-established coordinate references that will be used later for defect detection and repair, eliminating the need to create coordinate systems during the repair process itself.
Solution Approach 2:
The markings on the first electrode act as an intermediary reference system between the defect location and the repair equipment. By detecting deviations of light-emitting elements from these markings, the system translates physical defect positions into precise coordinate information that can be used for targeted repair.
2Ease of repair
If markings are added to electrodes for precise defect identification, then repair precision improves, but manufacturing complexity increases
Solution Approach 1:
The markings are formed on the first electrode during the existing manufacturing process, merging the coordinate reference creation with the electrode fabrication steps. This integration avoids adding separate manufacturing operations and utilizes the existing manufacturing infrastructure.
Solution Approach 2:
The markings are created during manufacturing as a preliminary action, so that when repair is needed, the coordinate reference system is already in place. This eliminates the need to perform additional manufacturing operations during the repair process.
3Productivity
If coordinate information is used for targeted defect removal, then repair efficiency improves, but the requirement for precise measurement and control increases
Solution Approach 1:
The system detects the positions of light-emitting elements relative to the markings on the first electrode, generating coordinate information based on any deviations detected. This feedback mechanism allows for precise identification of defect locations, which can then be targeted for removal or repair.
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 approach enables accurate detection and removal of defects, enhancing the repair process and maintaining the performance of light-emitting elements, thus improving the overall reliability and efficiency of display device maintenance.
Implementation Method 1
light-emitting elements disposed between the first electrode and the second electrode
Implementation Method 2
removing the defect from the display device based on the coordinate information
Data Source
AI summary
A display device includes a first electrode and a second electrode which are disposed on a substrate and face each other. Light-emitting elements are disposed between the first electrode and the second electrode. Markings are formed on the first electrode in a first extending direction of the first electrode in a plan view.