Display Panel Wiring Configuration for Crosstalk Reduction
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Solution Overview
Problem
Liquid crystal display panels experience light leakage due to interference from electric fields generated by closely spaced wiring sets, which disarrange liquid crystal molecules and are not adequately shielded by existing light shielding mechanisms.
Innovation Solution
The configuration of wiring sets is optimized by varying the shortest distance between adjacent wire segments, with a larger distance between segments inside the sealant near the active region compared to those outside, and incorporating a light-shielding layer to reduce electric field crosstalk and light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wiring sets are placed close together to increase circuit density, then productivity and device integration are improved, but electric field interference increases causing light leakage
Solution Approach 1:
A light-shielding layer is introduced as an intermediary component between adjacent wiring sets. This layer acts as a mediator that blocks electric field lines from extending laterally between closely spaced wires, thereby preventing electric field interference and light leakage while allowing the wiring sets to maintain high density for improved productivity
Solution Approach 2:
The harmful electric field interference is extracted and isolated by the light-shielding layer. The layer selectively blocks the lateral extension of electric fields from the wiring sets, separating the useful electrical function from the harmful electromagnetic interference, thus enabling high-density wiring without light leakage
2Object-affected harmful factors
If black matrix is used for light shielding, then light leakage is reduced to some extent, but complete prevention is not achieved and display quality is still affected
Solution Approach 1:
The light-shielding layer serves as an intermediary protective layer specifically designed to block electric fields from the wiring sets before they can interfere with the liquid crystal layer. This dedicated shielding layer provides more effective and complete light leakage prevention compared to the conventional black matrix, thereby improving display quality and reliability
3Volume of moving object
If wiring sets are positioned near the sealant for compact design, then device size is reduced, but electric field crosstalk increases causing liquid crystal molecule disarrangement
Solution Approach 1:
The light-shielding layer is positioned between the wiring sets and the liquid crystal layer, acting as a protective intermediary that blocks electric field lines from reaching the liquid crystal molecules. This allows wiring sets to be positioned near the sealant for compact device design while preventing electric field crosstalk that would cause liquid crystal molecule disarrangement
Solution Approach 2:
The light-shielding layer provides preliminary protection by blocking electric fields from the wiring sets before they can interfere with the liquid crystal layer. This preventive measure counteracts the potential harmful effects of compact wiring design, maintaining liquid crystal molecule alignment stability even when device size is reduced
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 configuration effectively reduces electric field interference, preventing disarrangement of liquid crystal molecules and enhancing display quality by minimizing light leakage.
Implementation Method 1
an electric field E generated by the voltage difference would interfere with the alignment of liquid crystal molecules
Implementation Method 2
a black matrix 160 over the wiring sets 150 provides merely a certain degree of light shielding effect
Implementation Method 3
the alignment of liquid crystal molecules 132 of the liquid crystal layer 130
Data Source
AI summary
A display panel including plural wiring sets is provided. Each of the wiring sets includes plural wires extending substantially along a straight direction. Each of the wiring sets has a first part and a second part respectively located at two opposite sides of a sealant. The first part is located between the sealant and an active region of the display panel, and a shortest distance of two adjacent wire segments of the first part is larger than a shortest distance of two adjacent wire segments of the second part. In addition, the shortest distance of two adjacent wire segments of the first part may be limited from about 15 μm to about 35 μm. The configuration of wiring set can reduce crosstalk of electric field between two adjacent wires to prevent light leakage and improve display quality.