Display Panel Driving Method for Stripe Elimination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In liquid crystal display panels using a one-to-six demultiplexer driving structure, uneven charging sequences lead to significant differences in brightness between columns, causing stripes in displayed images and affecting the display effect.
Innovation Solution
A driving method that alternates the high-level pulse sequences for demultiplexing signals in odd and even image frames to ensure consistent brightness across all subpixels, eliminating the uneven charging issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a one-to-six demultiplexer driving structure is used to reduce the number of data lines, then the area occupied by fan-out routes is reduced, but significant brightness differences and stripes appear between columns
Solution Approach 1:
The patent applies periodic action by alternating the charging sequence of pixel columns between odd and even image frames. In odd frames, columns are charged in sequence 1-2-3-4, while in even frames, the sequence is reversed to 4-3-2-1. This periodic reversal compensates for the cumulative voltage drop and charging time differences, ensuring that all columns receive adequate charging over time and eliminating the stripe effect caused by non-uniform brightness.
2Measurement precision
If data lines are extended to support higher resolution, then resolution is improved, but the area occupied by fan-out routes increases
Solution Approach 1:
The patent applies segmentation by dividing the pixel array into multiple groups that share common data lines. Specifically, multiple pixels along the same data line are charged in sequence rather than simultaneously, allowing fewer data lines to serve more pixels. This segmentation approach enables higher resolution displays while reducing the total number of data lines and the area required for their fan-out routes.
Data Source
AI summary
A driving method for a display panel is through making the first demultiplexing signal, the second demultiplexing signal, the third demultiplexing signal, the fourth demultiplexing signal, the fifth demultiplexing signal and the sixth demultiplexing signal according to the first sequence generate the high-level pulse in the first image frame, and through making the first demultiplexing signal, the second demultiplexing signal, the third demultiplexing signal, the fourth demultiplexing signal, the fifth demultiplexing signal and the sixth demultiplexing signal according to the second sequence different from the first sequence generate the high-level pulse in the second image frame, thereby by adding the effect of the two image frames to eliminate stripes on the images displayed by the display panel to improve the display effect.