Adaptive Weight Interpolation for OLED Burn-in Compensation
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Solution Overview
Problem
Existing OLED display technologies face challenges in accurately compensating for degradation after reaching a cumulative limit value, leading to inaccurate luminance correction and burn-in issues.
Innovation Solution
A display apparatus and method that apply an adaptive weight to the cumulative data count, extending the time to reach a cumulative limit value by interpolating weights based on luminance degradation over time, and generating compensation data using updated cumulative counts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a cumulative data count is used to compensate for OLED degradation, then luminance deviation can be corrected, but when the count value reaches a cumulative limit value, accurate compensation is no longer possible after a certain time
Solution Approach 1:
The patent applies dynamics by making the weight value adaptive and time-dependent. Instead of using a fixed weight for cumulative data count, the system dynamically adjusts the weight based on the current time or cumulative count value. This allows the compensation mechanism to remain effective over extended periods by adapting to the aging characteristics of OLED materials, thereby extending the duration of accurate luminance compensation beyond the previous cumulative limit.
Solution Approach 2:
The patent changes the parameter of weight value from a constant to a variable that depends on time or cumulative count. By introducing this parameter change, the system can maintain measurement precision for luminance deviation correction over a longer time period. The weight value is adjusted according to predetermined criteria related to time or cumulative count, allowing the compensation algorithm to remain accurate even as the OLED continues to degrade over time.
2Productivity
If the same compensation value is continuously used after the count value reaches the cumulative limit, then the system operates continuously, but accurate compensation is not possible
Solution Approach 1:
The system maintains continuous operation while dynamically adjusting the weight value based on time or cumulative count. This dynamic adjustment ensures that even as the OLED continues to degrade, the compensation remains accurate. The weight value changes adaptively to reflect the current state of degradation, allowing the system to operate continuously without sacrificing compensation accuracy.
Solution Approach 2:
The patent implements a feedback mechanism where the weight value is adjusted based on the current time or cumulative count value. This feedback loop ensures that the compensation value remains accurate by continuously adapting to the degradation state of the OLED. The system uses the accumulated data and time information to refine the weight value, thereby maintaining compensation accuracy throughout continuous operation.
3Duration of action of stationary object
If adaptive weight is applied to cumulative data count, then cumulative lifespan is extended, but system complexity increases
Solution Approach 1:
The patent extends cumulative lifespan by changing the weight value parameter based on time or cumulative count. This parameter change approach is relatively simple to implement, as it involves adjusting a single variable in the compensation calculation. The method maintains simplicity while effectively extending the useful life of the OLED by ensuring accurate compensation over a longer period.
Solution Approach 2:
The patent applies preliminary action by pre-determining the weight adjustment strategy based on time or cumulative count. The weight values or adjustment rules are established in advance, which simplifies the real-time computation. This preliminary preparation allows the system to extend cumulative lifespan without requiring complex real-time analysis, as the weight adjustment follows predetermined patterns based on accumulated data.
Data Source
AI summary
The present disclosure relates to a display apparatus and control method thereof. The display apparatus includes a receiver configured to receive input image data, an accumulator configured to generate a cumulative data count by analyzing a degree of degradation according to the received input image data and a burn-in factor, an interpolator configured to update the cumulative data count in a memory by applying an adaptive weight to the generated cumulative data count, and a compensator configured to generate compensation data using the input image data and the updated cumulative data count.