Conductive Enclosure Layout for OLED Touch Electrode Bridging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process of organic light emitting diode (OLED) products with a mutual capacitive structure requires multiple metal mask layers, increasing complexity and cost.
Innovation Solution
A display panel design that includes a conductive enclosure structure with stacked insulation and metal layers, allowing touch control electrodes to be bridged through adjacent metal layers, reducing the need for additional masks and lowering manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate metal mask layers are used to form first and second touch control electrodes, then the touch control functionality is achieved, but the manufacturing process complexity increases and the number of masks increases
Solution Approach 1:
The patent combines the functions of two separate metal mask layers into a single metal mask layer. The first and second touch control electrodes are formed using the same metal mask layer, which is shared between both electrode formations. This merging approach maintains the required touch control functionality while reducing the total number of masks from two to one, thereby simplifying the manufacturing process.
Solution Approach 2:
The single metal mask layer serves multiple functions: it forms both the first touch control electrode and the second touch control electrode. By designing the metal mask layer to perform dual functions, the patent eliminates the need for separate mask layers for each electrode, reducing manufacturing complexity while maintaining effective touch control functionality.
2Ease of manufacture
If two separate metal mask layers are used to form touch control electrodes, then the electrodes can be formed independently, but the number of masks increases and manufacturing cost increases
Solution Approach 1:
The patent merges the formation of first and second touch control electrodes into a single masking step using one metal mask layer. This approach maintains the ability to form both electrodes independently through appropriate pattern design, while reducing the quantity of masks from two to one, thereby lowering manufacturing cost and material consumption.
3Manufacturing precision
If additional metal mask layers are added to the manufacturing process, then more precise electrode control is achieved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The patent achieves precise electrode control through local quality variations in the single metal mask layer. By designing the mask layer with specific local patterns, openings, and configurations, the invention enables precise formation of both touch control electrodes without requiring additional mask layers. The local quality of the mask layer is optimized to provide the necessary precision while maintaining process simplicity.
Data Source
AI summary
A display panel includes a driving substrate, a conductive enclosure structure arranged on the driving substrate and including an insulation layer and a plurality of first metal layers, and a touch control electrode layer arranged on a side of the conductive enclosure structure away from the driving substrate. The insulation layer and the plurality of first metal layers are stacked in sequence along a direction away from the driving substrate. The plurality of first metal layers are arranged on a same plane at intervals. The touch control electrode layer includes a plurality of first touch control electrodes. The plurality of first touch control electrodes extend to the plurality of first metal layers, and adjacent electrodes of the plurality of first touch control electrodes are bridged through the corresponding one of the plurality of first metal layers. A display device is also provided.