Liquid Crystal Panel Electrode Mesh for Uniform Signal Distribution
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Solution Overview
Problem
Existing liquid crystal panels experience significant signal delays due to high resistance in transparent electrodes, particularly when pixels are divided into multiple segments, leading to uneven signal distribution and potential noise interference.
Innovation Solution
Incorporating a metal wire connected to a transparent conductive layer through spacers and light blocking portions, forming a mesh-like structure to reduce resistance and improve signal distribution, with the metal wire extending in one direction and intersecting at hubs to connect to the transparent conductive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transparent electrodes are used for pixel electrodes and common electrodes, then the display region can be fully utilized and the structure remains simple, but signal delay occurs due to high resistance especially in pixels far from picture-frame wires
Solution Approach 1:
The patent combines transparent conductive materials (such as ITO) with metal wires (such as Al, Mo, or Cu) to create a composite electrode structure. The transparent conductive layer maintains optical transparency and basic conductivity, while the embedded metal wires provide low-resistance signal pathways, reducing signal delay without significantly increasing structural complexity
Solution Approach 2:
The electrode structure is segmented into multiple components: transparent conductive layers forming the basic electrode pattern, and discrete metal wire segments strategically positioned to provide signal distribution. This segmentation allows each component to perform its optimized function while maintaining overall structural simplicity
2Manufacturing precision
If pixels are divided into multiple segments to increase resolution, then display quality improves, but signal delay increases for segments far from picture-frame wires
Solution Approach 1:
Metal wires act as intermediary signal distribution pathways between picture-frame wires and segmented pixel electrodes. These intermediaries extend low-resistance signal paths into the display region, ensuring that even distant segmented pixels receive signals without significant delay
Solution Approach 2:
The patent extends signal distribution from the peripheral picture-frame region into the central display region by adding metal wires that run parallel to picture-frame wires. This creates additional signal distribution dimensions, reducing the distance signals must travel to reach segmented pixels
3Reliability
If metal wires are added to reduce resistance and signal delay, then signal transmission improves, but moire patterns may occur and device complexity increases
Solution Approach 1:
Metal wires are strategically positioned in specific regions where they provide maximum benefit (parallel to picture-frame wires for signal distribution) rather than uniformly across the entire display. This localized approach minimizes interference with the pixel pattern while maintaining signal transmission quality
Solution Approach 2:
The metal wire pattern is designed to follow the same directional orientation as picture-frame wires, creating a parallel structure that copies the existing signal distribution geometry. This copying approach ensures compatibility with the overall display structure and minimizes moire pattern generation
Data Source
AI summary
A liquid crystal panel includes: a display region, and a picture-frame region provided around the display region; and a first substrate, a second substrate disposed across from the first substrate, and a liquid crystal layer and a plurality of spacers disposed between the first substrate and the second substrate. Either the first substrate or the second substrate has a picture-frame wire disposed in the picture-frame region, and the first substrate has: a transparent conductive layer; and a metal wire extending from the picture-frame wire toward the display region, and electrically connected to the transparent conductive layer in regions overlapping with the plurality of spacers in plan view.