Pixel Structure Isolation Line for Display Mura Reduction
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Solution Overview
Problem
In large panel displays, increasing data selection lines to reduce frame width results in large pixel distances, leading to electric field interference with pixel electrodes, which degrades display quality due to the mura phenomenon.
Innovation Solution
Incorporating an isolation line along the pixel electrode, electrically coupled to a fixed voltage, to reduce the influence of data signal electric fields on pixel electrodes, thereby improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the number of data selection lines is increased to reduce frame width, then the frame width is reduced, but the distance between pixels becomes too large causing electric field interference
Solution Approach 1:
An isolation line is introduced as an intermediary element between the data selection line and the pixel electrode. This isolation line, being electrically coupled to a fixed voltage (ground), acts as a mediator that blocks the electric field interference from the data selection line, preventing it from reaching the pixel electrode while allowing the data selection line to maintain its function.
Solution Approach 2:
The harmful electric field interference is extracted and isolated from the pixel electrode by introducing a separate isolation line. The isolation line specifically targets and removes the interfering electric field component from the data selection line, allowing the useful data signal to pass through unaffected while blocking only the harmful electric field interference.
2Area of stationary object
If bridge connection is used to increase pixel electrode area, then pixel electrode area is increased, but electric field interference from data selection lines affects pixel electrodes
Solution Approach 1:
The isolation line serves as a protective intermediary positioned between the data selection line and the pixel electrode (particularly the second electrode). It blocks the electric field interference from reaching the pixel electrode, allowing the bridge connection to maintain its function of increasing pixel electrode area without suffering from electric field interference.
3Object-affected harmful factors
If isolation line is added to reduce electric field interference, then display quality is improved, but device complexity increases
Solution Approach 1:
The isolation line is strategically positioned only where it is most needed - along the pixel electrode and particularly overlapping with the second electrode in the bridge connection structure. This localized placement ensures that the isolation line provides maximum protection against electric field interference only in the critical areas, minimizing the overall increase in device complexity while maintaining display quality.
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 isolation line effectively mitigates the electric field interference, reducing mura and enhancing display quality by maintaining pixel voltage integrity.
Implementation Method 1
The isolation line is configured to reduce an influence of an electric field of the data signal on the pixel voltage of the pixel electrode
Data Source
AI summary
A pixel structure includes a pixel electrode, a data selection line and an isolation line. The isolation line is disposed along the pixel electrode. The pixel electrode is configured to store a pixel voltage. The data selection line is configured to transmit a data signal. The isolation line is configured to reduce an influence of an electric field of the data signal on the pixel voltage of the pixel electrode. A projection area of the isolation line is overlapped with a projection area of the pixel electrode.