Display Shielding Electrode Static Electricity Distribution
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Solution Overview
Problem
Display apparatuses face defects due to static electricity generated from external sources, which can damage the semiconductor pattern and lead to pixel failures.
Innovation Solution
A display apparatus design that includes a semiconductor pattern continually extending in a row direction with shielding electrodes and voltage lines to distribute and shield static electricity, preventing damage and defects by sharing initialization voltages and connecting power lines in a mesh structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shielding electrodes and voltage lines are added to protect against static electricity, then pixel reliability is improved, but device complexity increases
Solution Approach 1:
The display device is divided into multiple pixel units (first pixel, second pixel, third pixel, etc.) with shielding electrodes positioned between adjacent pixels. Each pixel can be independently protected by its own shielding electrode, allowing localized protection without requiring system-wide complexity. The shielding electrodes are segmented and distributed throughout the display structure to provide targeted protection against static electricity.
Solution Approach 2:
Shielding electrodes are introduced as intermediary elements between adjacent pixels to block or redirect static electricity. These shielding electrodes act as mediators that intercept harmful electrical charges before they can damage the pixel components. The voltage lines and contact plugs serve as additional intermediaries to distribute initialization voltages and maintain proper electrical potential across the display structure.
2Manufacturing precision
If multiple voltage lines and contact plugs are used to distribute initialization voltages, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The voltage distribution system is segmented into multiple independent voltage lines (first voltage line, second voltage line, etc.) and contact plugs (first contact plug, second contact plug, etc.). Each voltage line and contact plug can be independently manufactured and positioned, allowing for precise control of initialization voltage distribution. This segmentation enables accurate voltage application to specific pixel regions while maintaining manufacturing precision through modular assembly.
Solution Approach 2:
The shielding electrodes are connected to voltage lines through contact plugs to establish equipotential regions between adjacent pixels. By connecting the shielding electrode to the same voltage potential as adjacent pixels, electrical gradients and potential differences that could cause static electricity buildup are eliminated. This equipotential design ensures uniform voltage distribution and prevents harmful electrical stress on pixel components.
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 pixel defects caused by static electricity by distributing it across the semiconductor pattern and shielding critical components, ensuring stable operation and improved display quality.
Implementation Method 1
a first shielding electrode arranged between the first pixel and the second pixel
Data Source
AI summary
A display apparatus including first-through-third pixels sequentially arranged in a row direction, a first shielding electrode arranged between the first pixel and the second pixel, a first voltage line configured to transmit a first initialization voltage, a second voltage line configured to transmit a second initialization voltage, a first contact plug connecting the first pixel and the second pixel to the first voltage line, a second contact plug connecting the second pixel and the third pixel to the second voltage line, and a third contact plug connecting the first shielding electrode to the first voltage line.