Display Panel Pre-scaling and Compensation for Flicker Reduction
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Solution Overview
Problem
High-resolution display devices face challenges in maintaining display quality due to pixel deterioration over time, requiring significant memory capacity for compensation data and leading to long initialization times and potential flicker phenomena caused by loading delays or errors.
Innovation Solution
A display device and method that utilize pre-scaling data to adjust image data before compensation data is loaded, using a single pre-scaling factor for the entire panel or pre-scaling pixel groups, and perform a transition operation to gradually change from pre-scaled to compensated images, reducing flicker and improving initialization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compensation data is stored for all pixels in high-resolution display devices, then pixel deterioration compensation capability is improved, but memory capacity requirement increases
Solution Approach 1:
The patent divides pixels into multiple groups and stores compensation data only for representative pixels of each group rather than all pixels. This segmentation approach maintains deterioration compensation capability while significantly reducing memory capacity requirements.
Solution Approach 2:
The patent creates a simplified copy of compensation data by storing only essential representative values (such as maximum, minimum, or average compensation values) that can be applied to multiple pixels. This copying strategy reduces data storage needs while preserving compensation functionality.
2Reliability
If compensation data is loaded at initialization, then pixel deterioration compensation is improved, but initialization time increases
Solution Approach 1:
The patent extracts only the essential compensation data needed for immediate display operation, separating it from the full compensation dataset. This allows the display to initialize quickly with minimal data while maintaining compensation capability for the displayed content.
Solution Approach 2:
The patent applies partial compensation action by using reduced compensation data that covers the essential compensation needs during initialization and normal operation, rather than loading and processing complete compensation data for all pixels.
3Reliability
If compensation data loading is performed during operation, then display quality compensation is improved, but flicker phenomenon occurs due to loading delays
Solution Approach 1:
The patent performs preliminary action by pre-calculating and storing representative compensation data (such as maximum, minimum, or average values) before display operation begins. This preliminary preparation eliminates the need for real-time data loading during operation, preventing flicker while maintaining compensation quality.
Data Source
AI summary
A display device includes a display panel including a display panel including a plurality of pixels, a memory device configured to store pre-scaling data and compensation data, and a panel driver configured to generate first image data by performing a pre-scaling operation on input image data based on the pre-scaling data, generate second image data by performing a compensation operation on the input image data based on the compensation data, and provide a driving signal to the pixels to display a pre-scaled image corresponding to the first image data, or to display a compensated image corresponding to the second image data, wherein the pre-scaling operation is performed before the compensation operation is performed.