Pixel Array Signal Line Shielding for Display Color Uniformity
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Solution Overview
Problem
Conventional pixel arrays in display panels experience color unevenness issues due to signal coupling between selection lines and pixel units, leading to decreased display quality, particularly noticeable on the diagonal of the display.
Innovation Solution
The pixel array design includes a plurality of first and second signal lines, active components, and selection lines, where the second signal lines are electrically insulated from the first signal lines and positioned between selection lines and active components, reducing signal interference and color unevenness by shielding the impact of signals on pixel units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If selection lines are electrically connected to first signal lines at intersections, then signal transmission efficiency is improved, but signal interference and color unevenness occur in pixel units near the selection lines
Solution Approach 1:
The patent introduces second signal lines as intermediary elements between selection lines and pixel units. These second signal lines act as mediators that electrically connect pixel units to first signal lines while being electrically insulated from selection lines, thereby preventing direct signal interference while maintaining signal transmission functionality.
Solution Approach 2:
The patent segments the signal transmission path by introducing a separate layer of second signal lines that are electrically insulated from both selection lines and first signal lines. This segmentation creates distinct electrical zones that prevent signal coupling while maintaining functional connectivity through controlled intersections.
2Object-affected harmful factors
If second signal lines are electrically insulated from first signal lines, then signal interference is reduced, but manufacturing complexity increases due to additional insulating layers
Solution Approach 1:
The insulating layer serves multiple functions simultaneously: it electrically insulates second signal lines from first signal lines, provides a structural base for forming intersections, and enables controlled electrical connections where needed. This multi-functionality reduces the need for additional separate insulating structures.
Solution Approach 2:
The patent merges the insulating function with the structural support function by using a single insulating layer that both electrically isolates conductive lines and provides the physical framework for forming intersections and connections, thereby reducing overall manufacturing steps.
3Object-affected harmful factors
If second signal lines are positioned between selection lines and active components, then color unevenness is prevented, but the density of signal lines increases
Solution Approach 1:
The patent resolves the spatial conflict by introducing a third dimension (vertical layering) to accommodate second signal lines. Instead of increasing horizontal line density, the solution places second signal lines in a separate electrical layer that is electrically insulated from other signal lines, thereby preventing interference while maintaining a compact planar layout.
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
This design effectively reduces signal interference, preventing color unevenness and enhancing display quality by ensuring that selection lines are not close to active components, thereby improving the overall performance of display devices.
Implementation Method 1
the second signal lines are electrically insulated to the first signal lines and positioned between selection lines and active components, reducing signal interference and color unevenness by shielding the impact of signals on pixel units
Data Source
AI summary
A pixel array includes first signal lines, second signal lines, active components, pixel electrodes, and selection lines. The second signal lines are intersected with and electrically insulated to the first signal lines. Each active component is electrically connected to one of the first signal lines and one of the second signal lines. Each pixel electrode is electrically connected to one of the active components. The selection lines are intersected with the first signal lines to form a plurality of first intersections and second intersections. The selection lines are electrically connected to the first signal lines at the first intersections but electrically insulated to the first signal lines at second intersections. The selection lines are electrically insulated to the second signal lines. At least one of the second signal lines is disposed between each selection line and any one of the active components.