Display Device Pixel Deterioration Compensation Memory Management
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Solution Overview
Problem
Conventional display devices face challenges in accurately compensating for pixel deterioration due to limited memory resources, leading to reduced display quality and limited product lifespan.
Innovation Solution
A display device with a controller that accumulates and stores pixel deterioration data, adjusts storage frequency based on cumulative driving time, and applies compensation data to input image data to generate output image data, thereby extending memory lifespan and improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If deterioration data is stored frequently to improve compensation accuracy, then display quality is improved, but memory lifespan is reduced
Solution Approach 1:
The patent applies dynamic adjustment of data storage frequency based on pixel deterioration characteristics. The controller dynamically changes the storage frequency from high frequency in early stages to low frequency in later stages, optimizing both compensation accuracy and memory lifespan through adaptive timing control
Solution Approach 2:
The patent changes the temporal parameter of data storage by adjusting the time interval between storage operations. The storage frequency is modified as a function of cumulative driving time, with shorter intervals initially and progressively longer intervals as the display device ages
2Measurement precision
If data storage frequency is high to capture accurate deterioration, then compensation precision is improved, but memory resources are consumed faster
Solution Approach 1:
The system dynamically adjusts storage frequency based on the stage of pixel deterioration. High storage frequency is applied when pixels are new and deteriorating rapidly, then transitions to low frequency when pixels are aged and deterioration slows, optimizing resource utilization
Solution Approach 2:
The patent implements periodic data storage with varying periods. The storage operation occurs at different time intervals that change systematically with cumulative driving time, creating a non-uniform periodic pattern that matches the deterioration rate
3Duration of action of stationary object
If memory lifespan is extended by reducing storage frequency, then product durability is improved, but compensation accuracy may be reduced
Solution Approach 1:
The patent performs preliminary high-frequency data storage during the early operational stage when pixel deterioration is most rapid. This captures the critical deterioration phase data with high accuracy, allowing extended intervals later without compromising overall compensation precision
Solution Approach 2:
The storage frequency is dynamically adapted to match the actual deterioration rate at different operational stages, ensuring sufficient data capture for accurate compensation while extending memory lifespan through reduced frequency in later stages
Data Source
AI summary
A display device according to an embodiment of the present disclosure includes a display panel including a plurality of pixels, a memory in which deterioration data of the pixels is accumulated and stored and compensation data with respect to the deterioration data is stored, and a controller configured to apply the compensation data to input image data to generate output image data, and when an increase amount of deterioration data of the pixels generated as the output image data is displayed on the display panel is equal to or greater than a threshold, to accumulate the increase amount of the deterioration data to store the deterioration data in the memory.