Display Gamma Voltage Setting for Temperature-Consistent Color
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices fail to account for temperature variations during the setting of gamma voltages, leading to inconsistent luminance and color coordinates in displayed images.
Innovation Solution
A gamma voltage setting method that considers temperature characteristics by using a look-up table to store gamma values corresponding to different temperatures and grayscales, allowing for accurate luminance and color coordinate adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If gamma voltage is set without considering temperature variations, then the setting process is simple and quick, but the luminance and color coordinate consistency deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-storing multiple gamma values corresponding to different temperature conditions in a look-up table during the manufacturing process. This allows the display device to quickly retrieve and apply the appropriate gamma value based on the current temperature, eliminating the need for time-consuming real-time gamma calibration while maintaining consistent luminance and color coordinates across temperature variations.
2Manufacturing precision
If gamma values are adjusted for each temperature condition, then display quality improves, but the complexity of the gamma voltage setting process increases
Solution Approach 1:
The patent introduces an intermediary element - a look-up table storing pre-calculated gamma values for different temperature conditions. This intermediary allows the system to achieve temperature-compensated gamma settings without implementing complex real-time calculation algorithms or additional hardware, thereby maintaining display quality consistency while keeping the overall system complexity manageable.
3Stability of the object's composition
If temperature characteristic is reflected in gamma voltage setting, then image display stability improves, but the manufacturing process time increases
Solution Approach 1:
The patent resolves this contradiction by performing the temperature characteristic analysis and gamma value optimization in advance during the manufacturing process. The calculated gamma values for different temperature conditions are stored in a look-up table, enabling the display device to maintain stable image quality across temperature variations without requiring time-consuming real-time adjustments during operation.
Data Source
AI summary
A gamma voltage setting method of a display device includes: supplying, to a data driver, data corresponding to a specific grayscale of a specific dimming level; generating a data signal corresponding to the data in the data driver, using a gamma voltage corresponding to a processing gamma value; displaying an image corresponding to the data signal in a pixel unit; determining a temperature of the pixel unit; loading, from a look-up table, a target luminance and a target color coordinate, which correspond to the specific dimming level, the specific grayscale, and the temperature of the pixel unit; generating a gamma value such that an image corresponding to the target luminance and the target color coordinate is displayed in the pixel unit; and storing the gamma value.