Display Substrate Shielding Wire Reduces Parasitic Capacitance
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Solution Overview
Problem
Current display technologies face challenges in reducing parasitic capacitance between data transfer lines and reset control lines, leading to signal interference and poor display performance, particularly in wearable electronic products like smartwatches.
Innovation Solution
A display substrate design that includes a first shielding wire positioned between the reset control line and data transfer line, reducing parasitic capacitance and signal interference by overlapping or strategically placing the shielding wire to shield the data transfer line from signal jumps caused by the reset control line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a data transfer line is positioned close to a reset control line for compact layout, then device area is reduced, but parasitic capacitance between the lines increases causing signal interference
Solution Approach 1:
A shielding wire is introduced as an intermediary element positioned between the data transfer line and the reset control line. This shielding wire acts as a mediator that blocks the electromagnetic field coupling between the two signal lines, thereby reducing parasitic capacitance and preventing signal interference while allowing the lines to remain in close proximity for compact layout
2Device complexity
If signal lines are arranged in close proximity for compact design, then manufacturing complexity is reduced, but signal quality deteriorates due to parasitic capacitance
Solution Approach 1:
The shielding wire serves as a protective intermediary that maintains signal integrity between closely spaced routing lines. By positioning the shielding wire between the data transfer line and reset control line, the design achieves compact routing without compromising signal quality, as the shielding wire blocks parasitic capacitance effects
3Ease of manufacture
If no shielding structure is used to simplify manufacturing, then manufacturing cost is reduced, but display performance deteriorates due to V-shaped illumination issues
Solution Approach 1:
The shielding wire acts as a simple yet effective intermediary structure that can be integrated into existing manufacturing processes. While it adds a minor manufacturing step, it significantly improves display uniformity by preventing signal interference that causes V-shaped illumination defects, thereby achieving better display performance with minimal manufacturing complexity increase
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 differences between data lines, improving display performance by minimizing V-shaped illumination issues and enhancing the overall display effect.
Implementation Method 1
reducing parasitic capacitance between data transfer lines and reset control lines
Implementation Method 2
the first shielding wire is located between the first reset control line and the first data transfer line... shielding the data transfer line from signal jumps caused by the reset control line
Data Source
AI summary
A display substrate includes a substrate (100), a plurality of first pixel circuits (11), a plurality of second pixel circuits (12), a plurality of first light emitting elements (13), a plurality of second light emitting elements (14), at least one first reset control line (RST1), at least one first data line (51) and at least one first shielding wire (61). The first data line (51) at least includes a first sub-data line (511), a second sub-data line (512), and a first data transfer line (514) connecting the first sub-data line (511) and the second sub-data line (512). In a direction perpendicular to the display substrate, a first shielding wire (61) is located between a first reset control line (RST1) and a first data transfer line (514).