Display Panel Signal Line Integration for Touch Manufacturing
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Solution Overview
Problem
The manufacturing process of in-cell touch technology for display panels is complex and difficult due to the need for multiple masks and conductive via holes for forming display and touch electrodes, leading to increased complexity and cost.
Innovation Solution
The display panel design integrates the first power supply voltage signal lines and touch signal lines in the same layer, allowing them to share manufacturing masks and via holes, reducing the number of required masks and simplifying the manufacturing process by forming these lines simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple masks and conductive via holes are used for forming display and touch electrodes, then the touch function is realized, but the manufacturing process becomes complex and difficult
Solution Approach 1:
The patent merges the power supply voltage signal lines and touch signal lines into the same layer, allowing them to share manufacturing masks and via holes. This integration reduces the number of required masks and simplifies the manufacturing process while maintaining both display and touch functions.
Solution Approach 2:
The signal lines in the same layer serve multiple functions: first power supply voltage signal lines provide power to display electrodes, while touch signal lines provide touch sensing signals. This multi-functionality reduces the need for separate dedicated structures for each function.
2Reliability
If multiple masks and conductive via holes are used for forming display and touch electrodes, then the touch function is realized, but the manufacturing cost increases
Solution Approach 1:
The patent merges the power supply voltage signal lines and touch signal lines into the same layer, allowing them to share manufacturing masks and via holes. This integration reduces the number of required masks and simplifies the manufacturing process while maintaining both display and touch functions.
3Device complexity
If first power supply voltage signal lines and touch signal lines are integrated in the same layer, then manufacturing complexity is reduced, but signal interference may occur
Solution Approach 1:
The patent applies different insulation arrangements in different local regions: insulation layers are positioned between signal lines in some areas, while in other areas the lines are arranged to minimize interference. This localized quality control ensures signal accuracy while maintaining manufacturing simplicity.
Solution Approach 2:
Insulation layers serve as intermediary elements between the first power supply voltage signal lines and touch signal lines, preventing direct electrical interference while allowing both signal types to coexist in the same layer.
Data Source
AI summary
Provided are a display panel and a display apparatus. The display panel includes a first electrode layer including display electrodes and touch electrodes, light-emitting elements, touch signal lines electrically connected to the touch electrodes, and first power supply voltage signal lines electrically connected to the display electrodes. The display electrodes are arranged in a same layer as the touch electrodes and insulated from the touch electrodes. The first power supply voltage signal lines and the touch signal lines are formed in a same layer. Each light-emitting element includes a driving electrode, a light-emitting material and a display electrode of the display electrodes. The driving electrode, the light-emitting material and the display electrode are stacked on one another. The display electrode is located on a side of the light-emitting material facing a light-exiting surface of the display panel.