Display Panel Frame-Rate Conversion to Reduce Fishbone Misalignment
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Solution Overview
Problem
The phenomenon of fishbone-shaped misalignment occurs in display technology due to interlaced scanning under frequency multiplication mode, causing screens displayed by sub-pixels in odd-numbered and even-numbered rows to be staggered and superimposed, leading to visual misalignment.
Innovation Solution
A method involving generating a second video signal with a higher frame rate from a first video signal, where the second video signal includes alternating patterns of odd-numbered and even-numbered row image data across multiple frames to align the display of odd and even rows, thereby avoiding regular staggered superposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If interlaced scanning is used under frequency multiplication mode, then the frame rate is increased, but fishbone-shaped misalignment occurs due to staggered superposition of odd and even rows
Solution Approach 1:
The patent segments the interlaced scanning process into distinct progressive scanning fields, where each field displays complete frames with all rows (both odd and even) simultaneously. This segmentation eliminates the staggered superposition of odd and even rows that causes fishbone-shaped misalignment, while maintaining the high frame rate benefit of frequency multiplication mode.
2Speed
If interlaced scanning is used under frequency multiplication mode, then the display refresh speed is improved, but image clarity deteriorates due to visual misalignment
Solution Approach 1:
The patent inverts the traditional interlaced scanning approach by implementing progressive scanning within each field. Instead of displaying odd rows first then even rows (interlaced), each field displays complete frames with all rows simultaneously (progressive). This inversion eliminates the visual misalignment that degrades image clarity while preserving the high refresh speed achieved through frequency multiplication.
Data Source
AI summary
A display panel driving method. The method includes receiving a first video signal having a first frame rate; generating a second video signal having a second frame rate from the first video signal; driving the display panel to display an image according to the second video signal; a (2i-1)th frame of second image data of the second video signal includes first-type of row image data of an i-th frame of first image data of the first video signal, the 2i-th frame of the second image data includes second-type of row image data of the i-th frame of the first image data, a (2i+1)th frame of the second image data includes the second-type of row image data of an (i+1)th frame of the first image data, and a (2i+2)th frame of the second image data includes the first-type of row image data of the (i+1)th frame of the first image data.