Display Device Deterioration Compensation via Region Shifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices with self-light-emitting elements, such as OLEDs, QLEDs, or LEDs, face significant restoration errors when decompressing deterioration characteristic data due to high frequency components, leading to increased storage capacity requirements.
Innovation Solution
A display device with a display panel, deterioration characteristic acquisition, storage, and compensation units that shift the display region and use differential encoding or two-dimensional discrete cosine transforms to compress and decompress deterioration data, reducing restoration errors while maintaining storage capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of bits of data storing the deterioration characteristic data is increased, then the restoration error is reduced, but the storage capacity increases
Solution Approach 1:
The patent extracts and removes the high frequency component from the deterioration characteristic data before compression. By separating the high frequency component (which causes large variations and restoration errors) from the main data, the system can compress the remaining low frequency component more effectively without sacrificing critical information, thus reducing restoration error while maintaining storage capacity
Solution Approach 2:
The patent applies different processing approaches to different frequency components of the deterioration characteristic data. The low frequency component is preserved with higher precision while the high frequency component is removed or processed differently. This localized quality approach allows efficient compression of the most important data while accepting lower precision for less critical high frequency variations
2Quantity of substance
If error diffusion method is used to compress deterioration characteristic data, then storage capacity is suppressed, but restoration error becomes large when high frequency components are present
Solution Approach 1:
The patent performs preliminary processing by removing the high frequency component from the deterioration characteristic data before applying compression. This preliminary action prevents the high frequency component from causing large restoration errors during decompression, allowing the use of compression methods like error diffusion without suffering from their inherent precision losses on high frequency data
Data Source
AI summary
A display device includes a display panel that includes a deterioration characteristic acquisition unit that acquires deterioration characteristic data indicating a degree of deterioration of each of a plurality of pixels, a deterioration characteristic storage unit that compresses the deterioration characteristic data, stores the compressed deterioration characteristic data, and decompresses the stored deterioration characteristic data, a display region shifting unit that generates, from an input image data, shifted image data in which a display region is shifted along a display surface of the display panel, a deterioration compensation unit that generates control data obtained by transforming the shifted image data using the decompressed deterioration characteristic data, to compensate for the deterioration of each of the plurality of pixels, and a drive unit that drives the display panel using the control data, to display the input image in the shifted display region.