Liquid Crystal Display Driving Apparatus Motion Blur Reduction
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Solution Overview
Problem
Liquid crystal display devices suffer from motion blurring, which deteriorates the display quality of moving images due to their hold form driving method, unlike impulse form driven devices that prevent blurring by disconnecting adjacent frames.
Innovation Solution
A device and method that include a liquid crystal panel, a timing controller to analyze image motion and convert input data into double frame data, and a gate/data driver system to supply controlled voltages and signals, modulating the data according to motion speed to minimize blurring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If liquid crystal display device is driven in hold form to maintain image during frame period, then image continuity is improved, but motion blurring occurs and display quality deteriorates
Solution Approach 1:
The patent applies periodic action by dividing the frame period into multiple sub-frame periods and periodically updating the liquid crystal data. Instead of holding the same data throughout the entire frame period, the system refreshes the display in periodic intervals (e.g., first sub-frame, second sub-frame, third sub-frame), which maintains image continuity while reducing motion blurring by providing periodic updates that track moving objects better.
Solution Approach 2:
The patent segments the frame period into multiple sub-frame periods and divides the data update process into discrete stages. By segmenting the display refresh into multiple sub-frames with different data sets (original frame data, interpolated data, etc.), the system achieves both image continuity and reduced motion blurring through controlled periodic updates at different timestamps within the frame period.
2Object-affected harmful factors
If impulse form driving is used to prevent blurring by disconnecting adjacent frames, then motion blurring is reduced, but image continuity and display quality for moving images deteriorate
Solution Approach 1:
The patent applies preliminary action by performing motion analysis and image interpolation in advance before the actual display refresh. The system analyzes motion between frames, generates interpolated data for intermediate timestamps, and prepares multiple data sets (first sub-frame data, second sub-frame data, etc.) beforehand. This preliminary processing enables the display to show continuous, blur-free moving images by having ready-to-use data for each sub-frame period.
Solution Approach 2:
The patent introduces an intermediary processing stage that generates interpolated image data between original frames. This intermediary data set acts as a mediator between discrete frames, creating intermediate representations at different timestamps within the frame period. The interpolated data serves as a bridge that maintains image continuity while reducing motion blurring by providing smooth transitions between frames.
3Object-affected harmful factors
If frame rate is increased to reduce motion blurring, then display quality improves, but power consumption and device complexity increase
Solution Approach 1:
The patent applies partial action by selectively updating only certain portions of the display at different refresh rates. Instead of uniformly refreshing the entire display at a high frame rate (which would consume excessive power), the system uses motion analysis to identify regions with motion and applies different update strategies to different areas. Static regions may be updated less frequently while moving regions receive more frequent updates, reducing overall power consumption while still effectively reducing motion blurring where needed.
Data Source
AI summary
A device and method for driving a liquid crystal display device capable of minimizing a motion blurring phenomenon of a display image and improving the display quality of the display image are disclosed. The apparatus for driving a liquid crystal display device includes a liquid crystal panel having liquid crystal cells formed in regions defined by a plurality of gate lines and a plurality of data lines; a timing controller which analyzes a motion speed of an image in input data and converts the input data of one frame into different first and second double frame data or identical first and second double frame data according to the motion speed; a gate driver which sequentially supplies gate on voltages to the gate lines for each of first and second double frames under the control of the timing controller; and a data driver which converts the double frame data supplied from the timing controller into an analog video signal and supplies the analog video signal to the data lines under the control of the timing controller.