OLED Compensation Data Compression via Regional Reference Pixels
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Solution Overview
Problem
Large OLED display panels face uneven display phenomena due to differences in compensation data between pixel units, leading to poor display uniformity and increased hardware costs for storage and processing requirements.
Innovation Solution
A compensation data compression method that divides the display panel into regions, determines a reference value for each region, and computes second compensation data with a shorter storage bit length, allowing for lossless compression and decompression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If each pixel unit stores its own compensation data to achieve accurate compensation, then display uniformity is improved, but storage space requirements and hardware costs increase
Solution Approach 1:
The patent divides the display panel into multiple regions, and within each region, selects a reference pixel whose compensation data will be shared by other pixels in the same region. This segmentation approach reduces storage requirements while maintaining compensation accuracy through localized reference selection.
Solution Approach 2:
The patent uses compensation data from a reference pixel as a substitute for individual pixel compensation data. By copying the reference pixel's compensation data to other pixels in the same region, the system achieves space compression while maintaining adequate compensation performance.
2Productivity
If high refresh rate display is implemented requiring fast read/write memory, then display performance is improved, but hardware design difficulty and costs increase
Solution Approach 1:
The patent extracts only the essential compensation information by selecting reference pixels and storing only their compensation data. This extraction approach reduces the data volume that needs to be read and written, thereby reducing memory speed requirements and simplifying hardware design while maintaining display performance.
3Area of stationary object
If display panel size is increased to meet large screen demands, then display area is improved, but uneven display phenomenon becomes more prominent
Solution Approach 1:
The patent applies local quality by selecting reference pixels locally within each region of the display panel. This ensures that compensation data is optimized for local characteristics, improving display uniformity across large panels by accounting for regional variations in pixel performance.
Data Source
AI summary
A display driving method, compensation data compression and decompression methods and devices, a display device and a storage medium. The compensation data compression method includes dividing a display panel into at least one region; determining a reference value according to first compensation data of each pixel unit in each of at least one region; performing a computation on the first compensation data and the reference value to obtain corresponding second compensation data. The storage bit length of the second compensation data is shorter than the storage bit length of the first compensation data.