Display Panel Electrode Segmentation for Aperture Ratio
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Solution Overview
Problem
Liquid crystal display panels face challenges in achieving high aperture ratio and transmittance due to limitations in pixel electrode and storage line configurations, which affect display quality and efficiency.
Innovation Solution
The display panel incorporates a specific configuration of high and low pixel electrodes with slit structures and overlapping storage lines that do not intersect with data lines, along with a storage compensating line to stabilize storage voltage, enhancing aperture ratio and preventing coupling capacitors at pixel boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If traditional pixel electrode and storage line configurations are used, then device complexity is reduced, but aperture ratio and transmittance are limited
Solution Approach 1:
The pixel electrode is divided into high pixel electrode and low pixel electrode with different potentials, and storage lines are segmented into high storage line and low storage line. This segmentation allows for optimized electric field distribution and improved aperture ratio while maintaining manageable device complexity through systematic organization.
Solution Approach 2:
The patent introduces a dual-layer electrode configuration with high and low potential electrodes stacked in the vertical dimension. This dimensional approach allows simultaneous optimization of aperture ratio and transmittance by creating overlapping electrode regions that do not interfere with light transmission paths.
2Ease of manufacture
If storage lines overlap with data lines, then manufacturing is simplified, but coupling capacitors are formed at pixel boundaries affecting display quality
Solution Approach 1:
The patent extracts storage lines from overlapping with data lines by positioning high storage lines between high pixel electrodes and low storage lines between low pixel electrodes. This separation eliminates the formation of coupling capacitors at pixel boundaries while maintaining ease of manufacture through systematic layout design.
Solution Approach 2:
The patent introduces an intermediary positioning strategy where storage lines are placed in intermediate regions between pixel electrodes rather than overlapping with data lines. This intermediary configuration prevents direct interaction between storage and data lines, eliminating coupling capacitor formation while preserving manufacturing simplicity.
3Illumination intensity
If aperture ratio is increased, then transmittance is improved, but storage voltage stability may be compromised
Solution Approach 1:
The patent applies different potentials (high and low) to different regions of pixel electrodes and storage lines, creating localized electric field configurations. This local quality differentiation allows optimization of transmittance in display regions while maintaining storage voltage stability in storage regions through targeted electric field control.
Solution Approach 2:
The patent changes the electrical potential parameter by introducing high and low potential electrodes with different voltage levels. This parameter differentiation enables simultaneous improvement of transmittance through optimized electrode spacing and maintenance of storage voltage stability through controlled potential differences in storage regions.
Data Source
AI summary
A display panel includes a high pixel electrode including a first stem which extends substantially in a first direction, and a second stem which extends substantially in a second direction crossing the first direction, a low pixel electrode including a first stem which extends substantially in the first direction, and a second stem which extends substantially in the second direction, a data line which extends in the second direction, a high storage line which extends substantially in the second direction and overlaps the second stem of the high pixel electrode, and a low storage line which extends substantially in the second direction and overlaps the second stem of the low pixel electrode.