Integrated Touch Display Panel Blocking Wall Wire Routing
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Solution Overview
Problem
Current touch-sensing display panels face issues such as Moiré effects and decreased brightness due to the touch module shielding the display, along with high-precision and costly laminating processes, which result in poor yield and visual perception problems.
Innovation Solution
A touch-sensing display panel design that integrates the display module circuit and touch module circuit on a redistribution layer, with a blocking wall and wires extending to its side and upper surfaces, eliminating the need for additional laminating and preventing light interference, while enhancing sensing sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a touch module is assembled with a display panel using high-precision laminating process, then the touch-sensing function is achieved, but the manufacturing cost increases and yield decreases
Solution Approach 1:
The patent merges the display module circuit and touch module circuit into a single integrated substrate. The circuit layer includes both display driving circuits and touch sensing circuits, eliminating the need for separate touch module assembly and high-precision laminating processes. This integration maintains touch-sensing functionality while simplifying manufacturing and reducing costs.
2Reliability
If a touch module is assembled with a display panel, then the touch-sensing function is achieved, but Moiré effects and brightness reduction occur
Solution Approach 1:
By integrating the touch module circuit directly into the display module substrate, the patent eliminates the separate touch module assembly that causes Moiré effects. The circuit layer is positioned such that it does not create the interference patterns associated with stacked modules, while maintaining full touch-sensing functionality.
3Reliability
If wires are placed on the circuit layer for touch sensing, then the touch sensing function is achieved, but light interference occurs reducing luminous intensity
Solution Approach 1:
The patent applies different properties to different regions of the circuit layer. Wires for touch sensing are strategically positioned and designed with specific characteristics (such as being disposed along side walls or in specific patterns) that minimize their impact on light emission regions, while maintaining electrical connectivity for touch sensing functionality.
4Reliability
If additional laminating process is used for assembling touch module, then the touch-sensing function is achieved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The patent combines the display module and touch module into a single integrated structure on one substrate. This eliminates the need for additional laminating processes to assemble separate modules, thereby reducing manufacturing process complexity while maintaining complete touch-sensing functionality.
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 integration simplifies the manufacturing process, reduces costs, avoids display defects like rainbow patterns, and increases luminous intensity by preventing light interference from the wires, thereby improving visual perception and yield.
Implementation Method 1
the blocking wall is disposed on the second circuit layer and surrounds the light-emitting diode chip... preventing light interference
Data Source
AI summary
A touch-sensing display panel includes a substrate, a first circuit layer, a LED chip, a second circuit layer, a blocking wall, a second wire, and a third wire. The first circuit layer is on the substrate, including at least one first electrode, and a first wire. The LED chip is on and electrically connected to the first electrode. The second circuit layer is on the first circuit layer, including a second electrode, a touch sensing line, and a touch driving line. The blocking wall, the second wire, and the third wire are on the second circuit layer. The second wire extends to an inner sidewall and a top surface of the blocking wall, and electrically connects to the touch sensing line. The third wire extends to an outer sidewall of the blocking wall, and electrically connects to the touch driving line.