FFS LCD Pixel Array Independent Common Lines
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Solution Overview
Problem
Conventional fringe field switching liquid crystal display panels have complex driving methods and high power consumption due to the electrical connection of common lines, which hinders energy-saving and cost-effective display solutions.
Innovation Solution
The implementation of independently drivable common lines with interlaced common electrodes in the pixel array, allowing for simplified driving methods and reduced power consumption by providing different common signals to odd and even common lines within a frame time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If common lines are electrically connected to each other in conventional FFS liquid crystal display panels, then the common electrodes can be driven, but the driving method becomes complicated and power consumption increases
Solution Approach 1:
The patent divides the common lines into multiple independent common lines (first common line, second common line, etc.) that are electrically isolated from each other. Each common line can be driven independently with different signals, eliminating the need for complicated driving methods while reducing driving IC complexity and power consumption.
2Power
If common lines are electrically connected to each other, then common electrodes can be driven, but driving IC cost and power consumption increase
Solution Approach 1:
By segmenting the common lines into independent units, each common line can be driven with simpler driving circuits. The first common line connects to first common electrodes and the second common line connects to second common electrodes, allowing independent driving that reduces overall driving IC complexity and power consumption.
Solution Approach 2:
Different common lines can provide different common signals to different regions of the display panel. This local differentiation allows for optimized power consumption in different areas and reduces the complexity of the driving IC by allowing regional control strategies.
3Adaptability or versatility
If common lines are electrically connected, then common electrodes are driven, but dot inversion driving effect requires complicated driving methods
Solution Approach 1:
The patent enables dot inversion driving effect by providing different common signals to different common lines. The first common line provides a first common signal to first common electrodes while the second common line provides a second common signal to second common electrodes, allowing independent control for dot inversion without complicated driving methods.
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 reduces the complexity and cost of driving ICs, lowers power consumption, and enhances the display quality by enabling a dot inversion driving effect with improved power management.
Implementation Method 1
a wide viewing angle effect may be achieved by an electrical field generated by the common electrode and the pixel electrode
Implementation Method 2
Fringe field switching (FFS) liquid crystal display panels
Data Source
AI summary
A pixel array of a fringe field switching (FFS) liquid crystal display panel includes a plurality of gate lines, a plurality of data line, a plurality of pixel electrodes, a plurality of common lines, and a plurality of pixel units aligned in an array configuration. The gate lines are disposed parallel to each other along a first direction. The data lines are disposed parallel to each other along a second direction. Each of the pixel units includes at least one sub-pixel region. The common lines are disposed along the first direction and electrically isolated from each other. Each of the common lines includes a plurality of common electrodes extending along the second direction. The two adjacent common electrodes of each common line are respectively disposed in the two adjacent pixel units which are located in different rows.