Display Processor Overdrive Circuit for Motion Blur Reduction
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Solution Overview
Problem
Liquid crystal display devices have slower response times, leading to motion blur in dynamic videos, which negatively impacts user experience and is exacerbated by the generation of inversion ghost images during overdrive processes.
Innovation Solution
A processor is coupled to a display panel, comprising a storage circuit, a converter circuit, and an overdrive circuit. The converter circuit adjusts the frame rate of input video data, and the overdrive circuit performs an overdrive process to generate a driving signal, enhancing the display panel's response time and preventing inversion ghost images by optimizing the frame rate and overdrive voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the liquid crystal display device uses conventional display technology, then the device structure is simple, but the response time is slow causing motion blur
Solution Approach 1:
The display system is divided into multiple functional modules: a processor with storage circuit, converter circuit, and overdrive circuit. The overdrive circuit further segments the signal processing into separate functional blocks that can independently optimize response time without compromising overall system stability.
Solution Approach 2:
The converter circuit performs frame rate adjustment in advance before the overdrive circuit processes the signal. By pre-adjusting the frame rate of input video data, the system prepares the signal optimally for subsequent overdrive processing, reducing motion blur before it occurs rather than correcting it afterward.
2Speed
If the overdrive process is applied to speed up response time, then motion blur is reduced, but inversion ghost images are generated
Solution Approach 1:
The processor monitors the display output and uses feedback to adjust the overdrive voltage dynamically. This feedback mechanism allows the system to maintain fast response times while detecting and preventing inversion ghost images from being generated, creating a closed-loop control system that balances performance and quality.
Solution Approach 2:
The system dynamically adjusts multiple parameters including frame rate and overdrive voltage based on the input signal characteristics. By changing these parameters adaptively rather than using fixed values, the system optimizes response time for each specific display condition while avoiding the generation of inversion ghost images.
3Speed
If the frame rate is adjusted to optimize display performance, then response time improves, but video data processing complexity increases
Solution Approach 1:
The converter circuit and overdrive circuit are merged into a single processor unit that handles both frame rate adjustment and overdrive processing. This integration allows the system to perform multiple complex operations sequentially within one device, reducing overall system complexity while maintaining high processing capability for response time optimization.
Data Source
AI summary
A processor is configured to be coupled to a display panel. The processor includes a first storage circuit, a converter circuit, and an overdrive circuit. The first storage circuit is configured to store input video data. The converter circuit is configured to receive the input video data, and adjust a frame rate of the input video data, to generate adjusted video data. The overdrive circuit is configured to perform an overdrive process according to the adjusted video data, to generate a driving signal, such that the display panel displays a video according to the adjusted video data and the driving signal.