Alternating Scan Line Driving Sequences for Display Uniformity
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Solution Overview
Problem
Conventional display devices suffer from horizontal line phenomena, which degrade display quality and cause visual fatigue due to inconsistent brightness across horizontal lines.
Innovation Solution
The method involves dividing scan lines into groups and applying different driving sequences in alternating frame periods to ensure that each group of scan lines is driven sequentially with varying voltage levels, preventing the formation of horizontal lines and enhancing image uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional driving method is used with single driving sequence, then device complexity is reduced, but horizontal line phenomenon occurs degrading display quality
Solution Approach 1:
The patent divides the scan lines into multiple groups (first group, second group, etc.) and assigns different driving sequences to each group. This segmentation allows each group to be driven with a specialized sequence that prevents horizontal line artifacts, thereby improving display quality without requiring complete redesign of the entire driving system.
Solution Approach 2:
The patent implements dynamic driving sequences where the driving order of scan line groups alternates between different patterns (first driving sequence for first group, second driving sequence for second group). This dynamic approach adapts the driving pattern to eliminate horizontal line phenomena while maintaining manageable system complexity through structured alternation.
2Manufacturing precision
If all scan lines are driven with same driving sequence, then ease of operation is improved, but horizontal line phenomenon occurs
Solution Approach 1:
The patent applies different driving sequences to different groups of scan lines based on their specific characteristics and positions. The first group of scan lines uses a first driving sequence optimized for its characteristics, while the second group uses a second driving sequence. This localized optimization ensures brightness uniformity and eliminates horizontal line artifacts in each region without requiring complex global control.
3Reliability
If conventional driving method is used, then device complexity is minimized, but visual fatigue occurs due to inconsistent brightness
Solution Approach 1:
The patent implements periodic alternation between different driving sequences for different scan line groups. The first group is driven with the first driving sequence during certain frame periods, while the second group is driven with the second driving sequence during alternating frame periods. This periodic action pattern ensures consistent brightness and eliminates horizontal line phenomena while maintaining manageable control complexity through regular cycling.
Data Source
AI summary
A method for driving a display device is provided herein. The display device includes a plurality of scan lines. The method comprises following steps: dividing the scan lines into a plurality of groups, each of which comprises at least two scan lines, i.e. a first and a second scan line; during a first frame period, sequentially enabling the first and second scan line of each group in accordance with a first driving sequence; and during a second frame period, sequentially enabling the first and second scan line of each group in accordance with a second driving sequence, wherein the first driving sequence is different from the second driving sequence.