Display Substrate Pin-Region Layout With DC Shielding Between Signal Lines
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Solution Overview
Problem
The pin region of display panels has limited wiring space, leading to close signal line distances and cross-wiring, resulting in parasitic capacitance and signal interference, which affects the accuracy and performance of the display panel.
Innovation Solution
A display substrate design with a DC conductive structure spaced between signal lines, connected to a constant DC voltage, to create a stable electric field and reduce parasitic interference, with the signal lines arranged in parallel layers or the same layer with the DC conductive structure to minimize mutual interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal lines are arranged closely in the pin region to optimize wiring space, then wiring space utilization is improved, but parasitic capacitance and signal interference increase
Solution Approach 1:
A DC conductive structure is introduced as an intermediary element positioned between adjacent signal lines in the pin region. This mediator maintains a constant DC potential that shields the signal lines from each other, reducing parasitic capacitance and electromagnetic interference while allowing the signal lines to remain closely spaced for optimal wiring space utilization.
Solution Approach 2:
The DC conductive structure is connected to a constant DC voltage source, creating an equipotential region between the signal lines. By maintaining a stable potential in the space between adjacent signal lines, the electric field fluctuations are minimized, thereby reducing parasitic capacitance effects and signal interference while preserving compact wiring layout.
2Measurement precision
If DC conductive structure is added between signal lines to reduce interference, then signal precision is improved, but device complexity increases
Solution Approach 1:
The DC conductive structure serves multiple functions simultaneously: it acts as a shielding element to reduce interference, provides a reference potential for signal stability, and can be integrated with existing pixel electrode structures. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving improved signal precision.
Solution Approach 2:
The DC conductive structure is merged with existing electrode structures in the display panel, such as pixel electrodes or conductive layers that are already part of the manufacturing process. By combining the interference shielding function with existing structural elements, the overall device complexity is minimized while still achieving the desired signal precision improvement.
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
The solution effectively reduces parasitic capacitance and signal interference, improving signal precision and panel performance by maintaining a stable reference potential and optimizing wiring space utilization.
Implementation Method 1
the DC conductive structure is connected to a constant DC voltage, to create a stable electric field and reduce parasitic interference
Data Source
AI summary
Embodiments of the present disclosure provide a display substrate, a touch display panel and a display panel. The display substrate has a display region and a pin region on a side of the display region. The display substrate includes: a base substrate; and at least one first signal line and at least one second signal line both on a side of the base substrate and both extending to the display region from the pin region. The display substrate further includes a DC conductive structure connected to a constant DC voltage. The DC conductive structure is between the at least one first signal line and the at least one second signal line. Each of the at least one first signal line and the at least one second signal line is spaced apart from the DC conductive structure.