Display Panel Luminance Transition via Intermediate Frames
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Solution Overview
Problem
Sharp changes in luminance of display panels can lead to flickering and degradation of display quality, particularly when transitioning from one luminance level to another.
Innovation Solution
Incorporating a method where the luminance of the display panel changes gradually through a series of intermediate frames, with each frame's luminance and gamma value adjusted to successively reduce or increase between adjacent frames, ensuring a gentle transition from the start to the target luminance and gamma levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the luminance of the display panel sharply changes from current luminance to target luminance, then the luminance adjustment is fast and efficient, but flickering is observed and display quality is degraded
Solution Approach 1:
The luminance transition is segmented into multiple intermediate frames rather than a single sharp change. The patent divides the luminance adjustment process into discrete steps, where each frame transitions to the next with a controlled luminance difference. This segmentation prevents flickering by breaking down the abrupt change into manageable increments that are imperceptible to the human eye.
Solution Approach 2:
The luminance transition strategy is dynamically adjusted based on the direction of change. When luminance decreases, intermediate frames are inserted to gradually reduce luminance. When luminance increases, the patent applies gamma correction to maintain perceptual uniformity. This dynamic approach optimizes both transition speed and display quality based on the specific luminance adjustment scenario.
2Loss of time
If the luminance of the display panel is changed sharply, then the response time is reduced, but the perception of luminance changes is enhanced and image quality deteriorates
Solution Approach 1:
The patent changes multiple parameters simultaneously during luminance transitions: luminance values of intermediate frames, gamma values for color correction, and frame timing. By coordinating these parameter changes, the system achieves fast response while maintaining image quality. The gamma value adjustments specifically address the perception of luminance changes by ensuring color accuracy is maintained throughout the transition.
3Reliability
If intermediate frames are inserted to gradually change luminance, then display quality is maintained, but the number of frames increases and processing complexity rises
Solution Approach 1:
The system automatically determines when and how to insert intermediate frames based on the luminance transition requirements. The processing logic self-adjusts the number of intermediate frames needed based on the magnitude of luminance change and the current frame's luminance level. This self-service approach maintains display quality without requiring manual intervention or overly complex external control systems.
4Reliability
If gamma is changed along with luminance, then display quality is improved, but the coordination of multiple parameters increases control complexity
Solution Approach 1:
The patent pre-calculates the gamma values for each intermediate frame based on the target luminance and the current frame's characteristics. By performing this calculation in advance, the system simplifies the real-time control complexity. The gamma correction values are prepared beforehand, allowing the display system to simply apply them during the transition without complex real-time computations.
Data Source
AI summary
A display device is disclosed. The display device comprises a display panel whose luminance changes from a start luminance to a target luminance lower than the start luminance and which displays an image, wherein the image comprises a start frame having the start luminance and a start gamma, a target frame having the target luminance and a target gamma, and a plurality of intermediate frames sequentially placed between the start frame and the target frame, where a difference in the luminance of the display panel between adjacent frames is reduced.