Touch Display Cathode Laser Ablation for Mask Reduction
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Solution Overview
Problem
The manufacturing process of touch display panels is complex and time-consuming due to the need for multiple mask processes to create inductive and drive electrodes, which involves numerous film layers and increases the risk of damage from water vapor.
Innovation Solution
The touch display panel incorporates a cathode with intersecting inductive and drive electrodes, where these electrodes are manufactured using a laser radiation process instead of traditional mask processes, allowing for separate fabrication of inductive and drive electrodes without the need for multiple mask processes, and includes an organic light emitting layer with contact holes for connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple mask processes are used to manufacture inductive and drive electrodes, then the electrodes can be manufactured with proper structure, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The patent combines the manufacturing of inductive electrodes and drive electrodes into a single mask process. The cathode layer is patterned to simultaneously form both electrode types, eliminating the need for separate mask processes for each electrode type while maintaining proper structural precision
Solution Approach 2:
The cathode layer serves multiple functions: it acts as both the inductive electrode and the drive electrode, and also provides electrical connection to the organic light emitting layer. This multi-functionality reduces the number of separate manufacturing steps required
2Manufacturing precision
If multiple mask processes are used to manufacture inductive and drive electrodes, then the electrodes can be manufactured with proper structure, but the manufacturing time increases
Solution Approach 1:
The patent merges multiple electrode manufacturing operations into a single mask process step. By patterning the cathode layer once to create both inductive and drive electrodes simultaneously, the manufacturing time is reduced while maintaining the required structural precision for touch display operation
3Adaptability or versatility
If multiple film layers are arranged between inductive electrode and drive electrode, then the touch function can be implemented, but the risk of damage from water vapor increases
Solution Approach 1:
The patent merges the inductive and drive electrodes into a single cathode layer structure. This reduces the number of film layers and interfaces between electrodes, thereby reducing the pathways for water vapor penetration while maintaining the capacitive touch functionality through the integrated electrode design
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 simplifies the manufacturing process, reduces the risk of damage, and results in a more straightforward integration of touch and display functions in the panel.
Implementation Method 1
Performing a laser radiation on a cathode contained in the touch display panel to obtain a plurality of inductive electrodes and a plurality of drive electrodes
Data Source
AI summary
A touch display panel, a manufacturing method thereof, a driving method thereof, and a touch display device are provided. The touch display panel includes a cathode. The cathode includes a plurality of inductive electrodes and a plurality of drive electrodes intersecting with the plurality of inductive electrodes. Each of the inductive electrodes includes a plurality of inductive sub-electrodes connected in sequence, and each of the drive electrodes includes a plurality of drive sub-electrodes connected in sequence.