Display Panel Driving Method for Mixed Resolution Regions
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Solution Overview
Problem
The existing methods for driving display panels with mixed resolution regions, such as a low resolution display region with transparent areas and a higher resolution region, suffer from luminance differences that lead to image quality degradation and a noticeable boundary between the regions.
Innovation Solution
A method is introduced to drive a display panel with a first display region of lower resolution and at least one transparent region, and a second display region of higher resolution. This method involves determining maximum luminance data, calculating a compensation gain to adjust gray-levels, and applying this compensation to ensure the luminance of the first display region is comparable to the second, thereby minimizing the visibility of the boundary between the regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the current flowing in unit pixels of the low resolution display region is increased to compensate for luminance difference, then the luminance of the low resolution display region is improved, but the life of the unit pixels is rapidly deteriorated
Solution Approach 1:
The patent applies parameter changes by introducing a compensation gain that dynamically adjusts the driving current of unit pixels based on their position and luminance requirements. Instead of uniformly increasing current across all pixels, the system calculates individual compensation gains (e.g., first compensation gain for first unit pixels, second compensation gain for second unit pixels) to optimize both luminance output and pixel lifespan through precise parameter modulation
2Device complexity
If the number of unit pixels per unit area is reduced to create a low resolution display region, then the device complexity is reduced and transparent regions can be disposed, but the luminance of the low resolution display region becomes lower than the normal display region
Solution Approach 1:
The patent implements local quality by differentiating the driving characteristics of unit pixels based on their specific locations and functional requirements. The system divides pixels into different groups (first unit pixels in low resolution regions, second unit pixels in normal resolution regions) and applies location-specific compensation gains to optimize luminance output for each local area, allowing the low resolution region to achieve adequate luminance despite having fewer pixels per unit area
Data Source
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AI summary
A method of driving a display panel that includes first and second display-regions includes: determining maximum luminance data among first data including first red data, first green data, and first blue data for the first display-region, calculating a threshold gray-level based on a luminance gain, a gray-level of the maximum luminance data, and a gamma value for the display panel, selecting a smaller value between the threshold gray-level and a maximum gray-level as a gain determination gray-level, calculating a compensation gain obtained by dividing the gain determination gray-level by the gray-level of the maximum luminance data, generating first compensated data by applying the compensation gain to the first data, displaying a first-image in the first display-region based on the first compensated data, and displaying a second-image in the second display-region based on second data including second red data, second green data, and second blue data for the second display-region.