OLED Panel Non-Volatile Memory for Common Timing Control Circuit
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Solution Overview
Problem
Existing organic light-emitting display devices face challenges in achieving uniform picture quality due to non-uniform threshold voltages and mobilities of driving TFTs and organic light-emitting diodes, and the inefficiency in data transmission between a timing control circuit and a display panel when they are separated by a considerable distance, leading to manufacturing inefficiencies and increased costs.
Innovation Solution
Incorporating a non-volatile memory in the data driver of the display panel and using a long-distance signal transmission system, such as LVDS, with a converter to store and transmit compensation data between the panel and the timing control circuit, allowing for common use of the timing control circuit and enabling efficient data processing across distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the timing control circuit is separated by a considerable distance from the display panel, then the timing control circuit can be commonly used and manufacturing flexibility is improved, but data transmission efficiency deteriorates and transmission time increases
Solution Approach 1:
The patent applies preliminary action by storing compensation data in advance in a non-volatile memory device located in the data driver of the display panel. This allows the timing control circuit to directly read and use pre-stored compensation data without performing lengthy sensing and compensation operations during timing control circuit replacement, thereby significantly reducing data transmission time and operational delays while maintaining the ability to commonly use timing control circuits across different panels.
2Device complexity
If compensation data is stored in the timing control circuit, then data access is simplified, but manufacturing costs increase and device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the data storage function into two parts: the timing control circuit stores only control signals and basic operation data, while the display panel's data driver contains a non-volatile memory device that stores compensation data. This segmentation allows each component to have a specialized, simplified function, reducing overall system complexity and manufacturing costs while maintaining efficient data access through the panel's internal memory structure.
3Manufacturing precision
If sensing and compensation operations are performed during timing control circuit replacement, then compensation accuracy is maintained, but manufacturing time increases and productivity decreases
Solution Approach 1:
The patent applies preliminary action by pre-storing compensation data in the non-volatile memory device of the data driver before timing control circuit replacement occurs. When replacement is needed, the system directly reads the pre-stored compensation data without performing time-consuming sensing and compensation operations, thereby maintaining compensation accuracy while dramatically reducing manufacturing time and increasing productivity during timing control circuit replacement operations.
Data Source
AI summary
The present invention relates to an organic light-emitting display device including a non-volatile memory in a panel part when the panel part is separated by a considerable distance from a timing control circuit such that the timing control circuit can be commonly used, and a data processing method of the organic light-emitting display device. A data driver of the panel part includes a memory and a converter and performs communication with the timing control circuit through a long-distance signal transmission system, or a bridge circuit board including a memory and a converter performs communication with the timing control circuit through a long-distance signal transmission system to transmit display panel compensation data, thereby commonly using the timing control circuit.