AMOLED Display Smearing Blur Reduction via Periodic Light Control
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Solution Overview
Problem
AMOLED display technology experiences smearing blur when displaying dynamic pictures due to the perception of movement deviation in the brain, as the brain perceives movement even when the actual image is static, leading to a feeling of smear and blur.
Innovation Solution
A display method that determines the presence of dynamic parts in a frame and adjusts light emitting control signals to pixel units, providing a first signal at an effective electric level for static parts and a second signal with both effective and non-effective levels for dynamic parts, shortening the display duration of dynamic parts by controlling light emission during specific periods, such as after the display stage starts or before it ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light emitting control signal is maintained at an effective electric level throughout the entire display stage, then the display brightness is stable and continuous, but the perceived movement deviation increases causing smearing blur for dynamic parts
Solution Approach 1:
The patent applies periodic action by introducing a light emitting control signal that periodically switches between effective and non-effective electric levels during the display stage. For dynamic parts, the signal transitions to a non-effective level during periods when perceived movement deviation occurs, creating a periodic on-off pattern that eliminates smearing blur while maintaining display functionality.
Solution Approach 2:
The patent implements dynamics by making the light emitting control signal adaptive and variable rather than static. The control signal dynamically adjusts its electric level based on whether the displayed content is static or dynamic, and further adjusts during the display stage based on perceived movement deviation patterns, thereby optimizing display clarity for different content types.
2Manufacturing precision
If the light emitting control signal is switched to non-effective electric level to reduce perceived movement deviation, then the smearing blur is reduced, but the display continuity is interrupted
Solution Approach 1:
The patent uses periodic action to strategically interrupt the light emitting control signal only during specific time periods when perceived movement deviation occurs, rather than continuously. This periodic interruption pattern maintains display continuity for static parts while selectively reducing clarity issues for dynamic parts, balancing both requirements.
Solution Approach 2:
The patent applies local quality by differentiating the light emitting control signal behavior between static and dynamic parts of the display. Static parts maintain continuous effective electric level signaling for uninterrupted display, while dynamic parts receive periodic non-effective level interruptions to eliminate smearing blur, thereby applying different quality characteristics to different regions/content types.
3Illumination intensity
If the display stage duration is extended to maintain image visibility, then the display brightness is sustained, but the perceived movement deviation increases leading to more pronounced smearing blur
Solution Approach 1:
The patent applies periodic action by introducing strategic interruptions in the light emitting control signal during the display stage. These periodic non-effective level periods are timed to coincide with when perceived movement deviation occurs, effectively reducing smearing blur during extended display durations without requiring shortening of the overall display stage.
Solution Approach 2:
The patent maintains continuity of useful action by ensuring that the light emitting control signal returns to effective electric level after periodic interruptions. This allows the display to maintain sustained visibility and brightness over extended periods while temporarily suspending light emission only during specific intervals when it would otherwise contribute to smearing blur.
Data Source
AI summary
A display method includes: determining whether there is a dynamic part in a current frame of picture, according to image data of a previous frame of picture and the current frame of picture; in a case where there is no dynamic part in the current frame of picture, in a display stage of the current frame of picture, providing a first light emitting control signal being always at an effective electric level state to each of pixel units of a display panel; in a case where there is a dynamic part in the current frame of picture, in the display stage of the current frame of picture, providing a second light emitting control signal, including a part at an effective electric level state and a part at a non-effective electric level state, to pixel units corresponding to at least a part of the dynamic part.