LCD Panel Scanning Line Capacitance Balancing
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Solution Overview
Problem
Current liquid crystal display (LCD) panels experience non-uniformity in display frames due to inconsistencies in RC delay across individual scanning lines, leading to issues with flicker and crosstalk, especially when using Dot Inversion Driving techniques.
Innovation Solution
The implementation of a novel LCD panel structure where at least two scanning lines are electrically connected, and conductive sections are disposed above other scanning lines to increase wiring capacitance, ensuring consistent RC delay across all scanning lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Dot Inversion Driving is used to improve display quality, then flicker and crosstalk are reduced, but power consumption increases significantly
Solution Approach 1:
The patent applies different polarity patterns to different regions (rows) of the display panel. Specifically, odd-numbered rows use one polarity sequence while even-numbered rows use the opposite polarity sequence, allowing local optimization that reduces both crosstalk and power consumption compared to uniform Dot Inversion across the entire panel.
Solution Approach 2:
The display panel is divided into multiple scanning lines or rows, each capable of independent polarity control. This segmentation allows the application of Row Inversion or modified polarity schemes to individual rows, reducing the overall power consumption while maintaining display quality through localized polarity management.
2Use of energy by moving object
If Row Inversion Driving is used to reduce power consumption, then power consumption decreases compared to Dot Inversion, but horizontal crosstalk increases
Solution Approach 1:
The patent implements different polarity inversion schemes for different row groups. By carefully designing which rows are inverted and in what sequence, the patent reduces horizontal crosstalk within specific row regions while maintaining the overall power savings of Row Inversion driving.
3Ease of operation
If Frame Inversion Driving is used to simplify the driving scheme, then the driving technique is easier to implement, but display uniformity deteriorates due to flicker
Solution Approach 1:
The patent divides the display panel into multiple scanning lines with independent polarity control. This segmentation enables more sophisticated polarity management schemes that can maintain display uniformity across the entire panel while still keeping the driving complexity manageable through systematic polarity assignment rules.
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 approach enhances the uniformity of the display frame and improves display quality by reducing differences in RC delay, thereby minimizing flicker and crosstalk while maintaining low power consumption.
Implementation Method 1
conductive sections are disposed above at least part of each of the scanning lines other than said at least two scanning lines and electrically communicated with the common electrode lines... increase wiring capacitance... consistent RC delay
Data Source
AI summary
The invention discloses a liquid crystal display panel, comprising pixel electrodes, common electrode lines, data lines and scanning lines, wherein at least two of the scanning lines are electrically connected to each other. The liquid crystal display panel has a plurality of conductive sections are disposed above at least part of each of the scanning lines other than said at least two scanning lines and electrically connected to the common electrode lines. The liquid crystal display panel of the invention can use Dot Inversion Driving with low power consumption. Meanwhile, the invention improves consistency of the RC delays on the individual scanning lines, decreases the difference among the RC delays of scanning signals on all of the scanning lines, and thereby achieves uniformity of a display frame on the liquid crystal display panel.