Mother Substrate Wiring for Simultaneous OLED Inspection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for inspecting organic light emitting displays on a mother substrate are inefficient, requiring separate inspection of each display, leading to increased time and cost, and necessitate changes in inspection apparatus or jigs when circuit wiring lines or display sizes change.
Innovation Solution
A mother substrate with first and second wiring line groups extending in different directions, allowing for simultaneous inspection of multiple organic light emitting displays before scribing, with electrical coupling points outside the scribing lines to ensure stability and prevent short circuits, and a configuration that includes a scan driver, data distributor, and inspector to supply power and signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate inspection of each organic light emitting display is performed after scribing, then inspection can be conducted individually, but inspection time increases and cost increases
Solution Approach 1:
The patent merges multiple inspection operations into a single unit sheet inspection process. By maintaining the mother substrate structure with multiple organic light emitting displays arranged in a matrix and providing wiring line groups that extend across multiple displays, the system enables simultaneous inspection of multiple displays before scribing, thereby reducing total inspection time and cost while maintaining inspection effectiveness.
Solution Approach 2:
The wiring line groups are designed with multi-functionality to support both manufacturing processes and inspection processes. The first and second wiring line groups extend in different directions and are coupled to multiple organic light emitting displays, allowing a single inspection apparatus to inspect multiple displays simultaneously without requiring separate inspection setups for each display.
2Reliability
If separate inspection of each organic light emitting display is performed, then individual inspection is possible, but inspection cost increases and effectiveness deteriorates
Solution Approach 1:
The patent merges multiple inspection operations into a single unit sheet inspection process. By maintaining the mother substrate structure with multiple organic light emitting displays arranged in a matrix and providing wiring line groups that extend across multiple displays, the system enables simultaneous inspection of multiple displays before scribing, thereby reducing total inspection time and cost while maintaining inspection effectiveness.
3Productivity
If wiring lines are configured for unit sheet inspection, then inspection efficiency improves, but wiring line stability may be compromised
Solution Approach 1:
The patent segments the wiring lines into first and second wiring line groups that extend in different directions. The first wiring line group extends in a first direction and is coupled to organic light emitting displays in the same column, while the second wiring line group extends in a second direction and is coupled to organic light emitting displays in the first row. This segmentation allows independent optimization of each wiring line group for both inspection efficiency and stability.
Solution Approach 2:
The patent applies local quality by positioning the crossing portion of the wiring line groups within the scribing lines of the organic light emitting displays. This ensures that the wiring lines are stable and do not interfere with the sealing process, while still allowing efficient inspection of multiple displays. The wiring lines are configured to extend through specific regions of the mother substrate to optimize both stability and inspection efficiency.
4Productivity
If inspection is performed before scribing, then inspection time and cost are reduced, but wiring line stability must be ensured
Solution Approach 1:
The patent segments the wiring lines into first and second wiring line groups that extend in different directions. The first wiring line group extends in a first direction and is coupled to organic light emitting displays in the same column, while the second wiring line group extends in a second direction and is coupled to organic light emitting displays in the first row. This segmentation allows independent optimization of each wiring line group for both inspection efficiency and stability.
Solution Approach 2:
The patent applies local quality by positioning the crossing portion of the wiring line groups within the scribing lines of the organic light emitting displays. This ensures that the wiring lines are stable and do not interfere with the sealing process, while still allowing efficient inspection of multiple displays. The wiring lines are configured to extend through specific regions of the mother substrate to optimize both stability and inspection efficiency.
Data Source
AI summary
A substrate of a plurality of organic light emitting displays. The substrate includes a first wiring line group extending in a first direction to be coupled to organic light emitting displays in a same column among the plurality of organic light emitting displays, and a second wiring line group extending in a second direction to be coupled to organic light emitting displays in the same row among the plurality of organic light emitting displays. The first and second wiring line groups are arranged on the substrate to allow testing of the plurality of organic light emitting displays as a unit sheet.