Liquid Crystal Display Panel Charge Sharing Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current liquid crystal display panels face high power consumption due to the charge sharing method, which does not consider data differences between rows, leading to inefficient voltage management and increased energy usage.
Innovation Solution
A driving method that groups data lines into sub-groups, determines gray-scale value differences between rows, and selectively performs charge sharing based on these differences, optimizing voltage transitions to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If charge sharing is performed using the conventional method (shorting all source electrodes together), then power consumption is reduced to some extent, but the method does not consider data differences between rows, causing voltage to be pulled to Vcom and then lifted back to desired voltage, which increases power consumption
Solution Approach 1:
The patent divides all source electrodes into multiple groups (first group, second group, third group, fourth group) based on their data line assignments. This segmentation allows selective charge sharing within each group rather than forcing all electrodes to share charge uniformly, thereby considering data differences between rows and reducing unnecessary voltage adjustments.
Solution Approach 2:
The patent applies different charge sharing strategies to different groups of source electrodes based on their specific data line characteristics and gray-scale value differences. Each group can independently perform charge sharing operations tailored to its local data requirements, optimizing power consumption for each region rather than using a uniform approach.
2Ease of operation
If charge sharing is performed when polarity is not switched, then voltage is pulled to Vcom and then lifted to desired voltage, but this incurs more power consumption
Solution Approach 1:
The patent calculates gray-scale value differences between the current row and previous row in advance, before performing charge sharing operations. This preliminary calculation allows the system to determine which source electrodes should perform charge sharing and what voltage adjustments are needed, avoiding unnecessary voltage pulls to Vcom and subsequent lifts, thereby reducing power consumption.
Solution Approach 2:
The patent dynamically adjusts charge sharing operations based on real-time gray-scale value differences detected between rows. The system can adaptively determine whether to perform charge sharing for each group of source electrodes based on actual data changes, making the voltage management process dynamic and efficient rather than static and energy-intensive.
Data Source
AI summary
A driving method, a liquid crystal display panel, and an electronic device are described. The driving method is applicable to a liquid crystal display panel, the liquid crystal display panel including a plurality of first data lines and includes: grouping the plurality of first data lines into a plurality of sub-groups, each sub-group including a plurality of second data lines; determining a gray-scale value difference of data on each data line from a gray scale of a previous row to a gray scale of a next row, with respect to the plurality of second data lines of each sub-group; and selectively performing charge sharing with the plurality of second data lines in each sub-group, according to the determined gray-scale value difference.