LCD Panel Column Inversion Reduces Source Driver Power
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Solution Overview
Problem
Current half source driving (HSD) LCD panel structures consume excessive power due to frequent switching of data line polarities during dot inversion, leading to high power consumption in the source driver.
Innovation Solution
The LCD panel employs a column inversion driving manner with a specific layout of scan and data lines, where certain scan lines are coupled to specific pixels and data lines are arranged to reduce the number of data lines, allowing for reduced power consumption by minimizing polarity switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dot inversion driving manner is adopted in HSD structure, then the display effect is achieved, but the source driver power consumption increases due to frequent polarity switching
Solution Approach 1:
The patent inverts the conventional dot inversion approach by implementing column inversion instead. In the HSD structure with column inversion, the polarity switching is performed at the column level rather than row level, which reduces the frequency of polarity switching events and consequently reduces source driver power consumption while maintaining the necessary display effect
Solution Approach 2:
The patent changes the driving parameter from row-based dot inversion to column-based inversion. This parameter change in the driving manner modifies when and how polarity switching occurs, transforming the operation from switching every row to switching at column intervals, thereby reducing overall switching frequency and power consumption
2Ease of manufacture
If the number of data lines is reduced to half in HSD structure, then the source driver cost is reduced, but the number of scan lines must be doubled
Solution Approach 1:
The patent applies segmentation by dividing the display panel into multiple regions, each served by a shared data line. In HSD structure, data lines are segmented to serve multiple pixel columns through time-multiplexed scanning, reducing the total number of data lines required while maintaining full display functionality through sequential activation of different pixel groups
Data Source
AI summary
A liquid crystal display (LCD) and an LCD panel thereof are provided. The structure of the pixel array of the present LCD panel is the half source driving (HSD) structure, and by which skillfully layout the coupled relationship between each pixel and each data line, and thereupon the present LCD panel adopting the driving manner of the column inversion can be achieved the display effect of the dot inversion. Therefore, the present invention can substantially reduce the power consumption of the source driver.