Pixel Circuit Layout With Reference Voltage Shielding for Displays
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Solution Overview
Problem
Existing display devices face challenges in achieving diverse and high-quality image display through efficient pixel circuit arrangements and light-emitting diode configurations.
Innovation Solution
A display device design featuring pixel circuits arranged with vertical reference voltage lines interposed between them, along with specific configurations of light-emitting diodes emitting different colors, and data lines overlapping these voltage lines, to enhance image quality and diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixel circuits are arranged closely to increase display resolution, then image quality is improved, but signal interference between adjacent circuits increases
Solution Approach 1:
A reference voltage line is positioned between adjacent pixel circuits to act as an electrical shield. This intermediary structure blocks parasitic capacitance coupling and signal interference between neighboring pixel circuits, enabling closer arrangement while maintaining signal integrity and display quality.
2Object-generated harmful factors
If multiple voltage lines are added to shield pixel circuits, then signal interference is reduced, but device complexity increases
Solution Approach 1:
The reference voltage line serves multiple functions simultaneously: it provides electrical shielding between pixel circuits, maintains a stable reference potential, and reduces parasitic capacitance effects. This multi-functional design achieves interference reduction without proportionally increasing device complexity.
3Ease of manufacture
If pixel circuits and voltage lines are arranged in traditional configurations, then manufacturing is simplified, but image display quality and diversity are limited
Solution Approach 1:
The reference voltage line is positioned in a spatial dimension between pixel circuits rather than above or below them in the signal path. This dimensional arrangement provides effective shielding while maintaining compatibility with existing manufacturing processes and circuit layouts.
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 enables improved image display quality and versatility by optimizing pixel circuit arrangements and light-emitting diode configurations, allowing for varied color emission and efficient signal transmission.
Implementation Method 1
a first light-emitting diode electrically connected to the first pixel circuit... configured to emit light of a same color
Data Source
AI summary
A display device includes a first pixel circuit including a first-first pixel circuit and a first-second pixel circuit arranged along a first direction on a substrate, a first-1 gate line extending in the first direction and electrically connected to the first-1 pixel circuit, a first-2 gate line extending in the first direction and electrically connected to the first-2 pixel circuit, and a reference voltage line including a horizontal reference voltage line extending in the first direction and a vertical reference voltage line protruding in a second direction intersecting the first direction from the horizontal reference voltage line; and the first-1 pixel circuit and the first-2 pixel circuit are arranged with the vertical reference voltage line interposed therebetween.