Display Base Plate Shielding Layout for Pixel Signal Interference
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Solution Overview
Problem
Existing displaying devices experience signal interference between neighboring pixel units due to coupling capacitors, leading to poor uniformity and stability of display brightness.
Innovation Solution
A displaying base plate with a shielding signal line connected to a constant potential, positioned between signal lines of adjacent sub-pixel units to prevent coupling capacitor formation and signal interference, enhancing uniformity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If signal lines are arranged closely to increase pixel density, then display resolution is improved, but signal interference between neighboring pixels increases
Solution Approach 1:
A shielding signal line is introduced as an intermediary element between adjacent signal lines. This shielding line is connected to a constant potential (ground or power voltage) and acts as a mediator that blocks the capacitive coupling between neighboring signal lines, thereby preventing signal interference while allowing the signal lines to remain closely spaced for high resolution display.
Solution Approach 2:
The shielding signal line is connected to a constant potential (either ground potential or power supply voltage), creating an equipotential region between adjacent signal lines. This equipotential shielding line prevents potential differences from forming between neighboring signal lines, thereby eliminating the capacitive coupling effect and signal interference.
2Reliability
If shielding structures are added to reduce signal interference, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The shielding signal line is merged with the existing signal line structure and fabricated using the same metal layer and patterning processes. Rather than adding a separate shielding structure, the design integrates the shielding function into the existing signal line network, thereby reducing display uniformity issues without significantly increasing device complexity.
Solution Approach 2:
The shielding signal line serves multiple functions: it acts as a shield against signal interference, provides a reference potential, and can be integrated with the existing signal distribution network. This multi-functionality allows the same structural element to address multiple issues simultaneously, improving display uniformity without proportionally increasing complexity.
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 shielding signal line effectively reduces signal interference, improving the uniformity and stability of display brightness by maintaining a constant potential and preventing capacitive coupling between neighboring pixel units.
Implementation Method 1
a shielding signal line is provided between the first signal line and the second connecting line, and the shielding signal line is connected to the first electrode block
Implementation Method 2
signal interference between neighboring pixel units due to coupling capacitors
Data Source
AI summary
A displaying base plate and a displaying device, the displaying base plate includes a first sub-pixel unit and a second sub-pixel unit that are arranged adjacently, a substrate, and a first metal layer, a first insulating layer and a second metal layer that are arranged in stack on one side of the substrate. The first metal layer includes a first electrode block connected to a constant potential. The second metal layer includes signal lines and connecting lines; the signal lines include a first signal line and a second signal line; the connecting lines include a first connecting line and a second connecting line; the first signal line is connected to a driving circuit of the first sub-pixel unit, the second signal line is connected to a driving circuit of the second sub-pixel unit.