Display Device Compression Loss Level Management
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Solution Overview
Problem
Display devices with subpixels experience degradation over time, leading to variations in circuit element performance, which cause driving deviations and reduce display quality due to differences in degradation levels between subpixels.
Innovation Solution
A display device with a data driving circuit and a controller that processes compensation data to manage and adjust compression loss levels across subpixels, ensuring that the difference in compression loss levels between adjacent areas remains within a threshold, thereby reducing image quality reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If compression loss level is increased to reduce data size, then storage efficiency is improved, but image quality deteriorates due to loss of compensation data precision
Solution Approach 1:
The patent applies different compression loss levels to different regions of the display panel based on their degradation characteristics. Areas with similar degradation levels are grouped together and assigned the same compression loss level, allowing aggressive compression where appropriate while preserving quality where needed. This regional differentiation resolves the contradiction by making compression loss precise rather than uniform across the entire panel.
Solution Approach 2:
The patent dynamically adjusts the compression loss level parameter based on the degradation level of circuit elements in different regions. By changing this parameter according to actual degradation conditions, the system optimizes the balance between data size reduction and compensation precision, preventing both excessive compression loss and unnecessary data retention.
2Device complexity
If uniform compression loss level is applied to all subpixels, then processing complexity is reduced, but display quality deteriorates due to degradation variations between adjacent subpixels
Solution Approach 1:
The patent divides the display panel into multiple regions and assigns different compression loss levels to each region based on local degradation characteristics. This allows the system to account for spatial variations in circuit element degradation without requiring individually customized processing for each subpixel, thus maintaining reasonable processing complexity while improving display quality uniformity.
Solution Approach 2:
The patent segments the display panel into multiple regions for independent compression loss level management. By grouping subpixels into regions with similar degradation patterns, the system achieves fine-grained control over compression quality without the overhead of processing each subpixel individually, resolving the contradiction between complexity and precision.
3Quantity of substance
If high compression loss level is used for all compensation data, then storage capacity is improved, but compensation effectiveness deteriorates leading to driving deviations
Solution Approach 1:
The patent assigns different compression loss levels to different regions based on their specific degradation patterns. Regions with low degradation can use higher compression loss levels to save storage space, while regions with high degradation use lower compression loss levels to preserve compensation effectiveness. This localized approach optimizes both storage capacity utilization and compensation reliability.
Solution Approach 2:
The patent adjusts the compression loss level parameter dynamically according to the degradation level of each region. This parameter adaptation ensures that compression aggressiveness matches the actual compensation needs, preventing both unnecessary data retention in stable regions and excessive compression loss in degraded regions, thereby optimizing storage capacity while maintaining compensation effectiveness.
Data Source
AI summary
A display device may include areas having a plurality of subpixels. A method for processing and applying a compensation data to the display device may include adjusting a difference between compression loss levels of compensation data of adjacent areas of the display device so that the difference lies within a threshold loss deviation, compressing the compensation data, and applying the compensation data to the adjacent areas. The method can prevent a luminance deviation of the adjacent areas from increasing due to a difference in the compensation levels, and it can also improve an effect of compensation of a degradation of a subpixel in the display device.


