Alternating Scan Blocks for Display Hold-Blur Reduction
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Solution Overview
Problem
Conventional liquid crystal and organic EL displays suffer from hold-blur, which degrades image quality when showing moving images, as the image remains static during a frame period, causing a blurred effect on the viewer's retina.
Innovation Solution
A display system that alternates between two different scan blocks, each composed of consecutive pixel lines, to drive the display section using distinct image data sets, performing frame rate conversion and image processing to reduce hold-blur and enhance image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single block is used as the driving unit for scan, then the circuit configuration is simple, but the image quality deteriorates due to hold-blur
Solution Approach 1:
The display panel is divided into multiple blocks (first block and second block) that alternate as driving units during different scan cycles. This segmentation allows different regions to be scanned in alternating sequences, reducing the hold-display time for any single region and thereby minimizing hold-blur while maintaining circuit simplicity through regular alternating control
2Ease of operation
If the same block is used continuously as the driving unit, then the control is simple, but the hold-blur increases due to extended display time
Solution Approach 1:
The driving unit alternates dynamically between the first block and the second block across different scan cycles. This dynamic switching prevents any single block from maintaining continuous display, thereby reducing the hold-display time and minimizing hold-blur while keeping the control mechanism simple through alternating selection
3Manufacturing precision
If frame rate conversion is performed to reduce hold-blur, then the image quality improves, but the processing burden increases
Solution Approach 1:
The image data is pre-divided into first image data set and second image data set corresponding to the alternating blocks before the scan process. This preliminary preparation allows the display to achieve frame rate conversion effects and reduced hold-blur by simply alternating between pre-prepared data sets during scan, thereby reducing the actual processing burden during display operation
Data Source
AI summary
A display includes: a display section; and a display driving section driving the display section based on a first image data set and a second image data set that alternate with each other. The display driving section drives the display section by performing a first scan with use of a first block as a driving unit in accordance with the first image data set and a second scan with use of a second block as a driving unit in accordance with the second image data set. The first block is composed of a plurality of consecutive pixel lines, and the second block is composed of a plurality of consecutive pixel lines and is different from the first block.