Image Data Processing for Display Panel Brightness Stability
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Solution Overview
Problem
Display devices, such as organic light emitting diode (OLED) devices, face issues with poor image quality due to changes in pixel brightness caused by variations in driving voltages and environments, which are further exacerbated by differences in image types and data.
Innovation Solution
A method of processing image data by calculating representative values using different equations for luminance, applying weights through a lookup table, and generating converted image data to stabilize pixel brightness, which is then transmitted to a panel driving device to maintain consistent image quality across varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If driving voltage is changed to adapt to different display conditions, then display adaptability is improved, but pixel brightness stability deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing compensation values in a lookup table before actual display operation. When driving voltage changes, the system retrieves the appropriate compensation value from the pre-prepared table and applies it to the image data, thereby stabilizing pixel brightness without requiring real-time complex calculations during display operation.
Solution Approach 2:
The patent implements feedback by monitoring the driving voltage and using this information to dynamically adjust the image data through voltage-specific compensation. The system measures the actual driving voltage, compares it with reference values, and applies corresponding compensation factors to reverse the brightness changes caused by voltage variations, thus maintaining stable display quality across different operating conditions.
2Stability of the object's composition
If image data is processed with complex compensation methods, then pixel brightness stability is improved, but processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing compensation values in a lookup table before actual display operation. When driving voltage changes, the system retrieves the appropriate compensation value from the pre-prepared table and applies it to the image data, thereby stabilizing pixel brightness without requiring real-time complex calculations during display operation.
Solution Approach 2:
The patent uses copying by creating a lookup table that stores pre-computed compensation values for different driving voltages. Instead of performing complex compensation calculations in real-time, the system copies the appropriate pre-computed values from the table and applies them directly to the image data, significantly reducing processing time while maintaining brightness stability.
Data Source
AI summary
The present disclosure allows reducing the variation of the luminance depending on the types of images and improving image quality by calculating a plurality of representative values, representing the luminance of pixels so that the types of images can be distinguished, calculating a weight using such representative values, and compensating image data according to the weight.