Alternating Pixel Segmentation for Display Blur Reduction
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Solution Overview
Problem
Hold-type display devices, such as liquid crystal displays, suffer from a blur phenomenon when displaying moving objects, which deteriorates picture quality due to the storage of data in pixels until the next frame is received.
Innovation Solution
The display device employs a dual-frame driving method where first and second pixels alternate in receiving gate-on and gate-off voltages, and data voltages, allowing for the storage and discharge of data voltages in each frame, effectively preventing the blur phenomenon by displaying a black color in subsequent frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If data voltage is stored in pixels for hold-type display operation, then power consumption is reduced and display continuity is maintained, but blur phenomenon occurs on moving objects
Solution Approach 1:
The pixel array is segmented into first pixels and second pixels that operate on alternating frames. First pixels store data in odd frames while second pixels remain black, then roles reverse in even frames. This segmentation allows the display to maintain hold-type operation for power efficiency while preventing blur by ensuring that pixels displaying moving objects are not continuously active across frames.
Solution Approach 2:
The display employs periodic action by alternating the active state between first pixels and second pixels on a frame-by-frame basis. Each pixel type is active only in alternating frames (first pixels in odd frames, second pixels in even frames), creating a periodic pattern that prevents continuous storage of moving object data and eliminates blur while maintaining overall display continuity.
2Productivity
If gate-on voltage duration is extended for high vertical synchronization frequencies, then display refresh rate is improved, but blur phenomenon is exacerbated
Solution Approach 1:
By segmenting the pixel array into first pixels and second pixels with alternating activation patterns, the invention enables high vertical synchronization frequencies without extending gate-on voltage duration for the same pixel continuously. Each pixel type activates only in alternating frames, preventing the accumulation of blur while maintaining high refresh rates.
Solution Approach 2:
The periodic alternation between first pixels and second pixels allows the display to operate at high vertical synchronization frequencies. Each pixel type remains active only in alternating frames, creating a periodic pattern that prevents continuous exposure and blur accumulation, thereby supporting high refresh rates without exacerbating blur phenomenon.
3Stability of the object's composition
If data is continuously stored in pixels for hold-type operation, then image continuity is maintained, but picture quality deteriorates due to blur
Solution Approach 1:
The pixel array is divided into first pixels and second pixels that operate alternately. This segmentation maintains image continuity because one set of pixels is always active while the other is black, ensuring continuous display output. Simultaneously, it prevents blur by ensuring that pixels displaying moving objects are not continuously active, thereby maintaining picture quality.
Solution Approach 2:
The periodic alternation between first pixels and second pixels maintains image continuity by ensuring that some pixels are always active while preventing blur through the periodic black state. This creates a stable display output without continuous data storage in the same pixels, preserving both image continuity and picture quality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces and eliminates the blur effect, enabling longer gate-on voltage durations even at high vertical synchronization frequencies, thereby enhancing display clarity and picture quality.
Implementation Method 1
A liquid crystal display generates an electric field in the liquid crystal layer between the pixel electrode and the common electrode by applying the data voltage to the pixel electrode and the common voltage to the common electrode. Thus, a transmittance of light passing through the liquid crystal layer is adjusted based on the electric field
Data Source
AI summary
A display device includes first and second pixels, first and second gate lines which transfer first and second gate-on voltages, respectively, to the first and second pixels in a first frame and a second frame, respectively, a first data line which transfers a first data voltage to the first pixel in the second frame anda second data line which transfers a second data voltage to the second pixel in the first frame. The first pixel stores the first data voltage as a first stored data voltage in response to the first gate-on voltage and discharges the first stored data voltage in response to the second gate-on voltage. The second pixel stores the second data voltage as a second stored data voltage in response to the second gate-on voltage and discharges the second stored data voltage in response to the first gate-on voltage.