Pixel Repair Line Shielding Layout for Low-Capacitance Displays
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Solution Overview
Problem
The issue of minimizing parasitic capacitance between a repair line and a pixel electrode in display devices to improve image quality.
Innovation Solution
Incorporating a shielding line that overlaps and is connected to a repair line, while also being connected to a constant power source, to minimize parasitic capacitance by reducing voltage fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a repair line is used to repair defective pixels, then device reliability is improved, but parasitic capacitance increases causing image quality degradation
Solution Approach 1:
A shielding line is introduced as an intermediary element between the repair line and the pixel electrode. This shielding line acts as a mediator that blocks the parasitic capacitance coupling while allowing the repair line to maintain its connection to the pixel electrode for repair functions.
Solution Approach 2:
The harmful parasitic capacitance effect is extracted and isolated by introducing the shielding line, which separates the repair line from direct capacitive coupling with the pixel electrode, thereby removing the harmful effect while preserving the useful repair function.
2Object-affected harmful factors
If the shielding line overlaps the entire repair line, then parasitic capacitance is minimized, but device complexity increases
Solution Approach 1:
The shielding line is not uniformly applied along the entire repair line but is strategically positioned only in regions where parasitic capacitance with the pixel electrode occurs. This local application reduces the overall complexity while effectively minimizing the harmful parasitic capacitance.
Solution Approach 2:
Instead of applying the shielding line to the entire repair line, only the necessary portions are covered where parasitic capacitance issues arise, achieving sufficient protection without excessive 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 line effectively reduces parasitic capacitance, thereby enhancing image quality by minimizing voltage fluctuations and preventing defects such as line stains.
Implementation Method 1
minimizing a parasitic capacitance between a repair line and a pixel electrode
Data Source
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AI summary
The present disclosure relates to a display device, and more particularly, to a display device capable of improving image quality by minimizing a parasitic capacitance between a repair line and a pixel electrode. According to an embodiment of the disclosure, a pixel electrode (PE3); a pixel circuit (PC3) connected to the pixel electrode; a repair line (RPL) overlapping at least a part of the pixel circuit; and a shielding line (SHL) overlapping at least a part of the repair line (RPL) and connected to a constant power source.