Display Panel Brightness Correction for Center-to-Corner Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The uniformity of overall brightness in display panels is not up to standards due to differences in transient and gamma voltages between the centers and corners of liquid crystal display panels, particularly at the corners of source electrodes.
Innovation Solution
A brightness correcting method that divides the displayed image into a first area and surrounding second areas, calculates a brightness correction factor based on the brightness of these areas, and adjusts compensation values to correct the brightness uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional display panels are used, then the display can be produced with standard manufacturing processes, but the uniformity of overall brightness cannot meet requirements due to voltage differences between centers and corners
Solution Approach 1:
The patent divides the display panel into multiple measurement areas (first area and multiple second areas) to locally measure and correct brightness variations. This segmentation allows targeted correction of specific regions with different brightness characteristics, improving overall brightness uniformity without requiring complete system redesign.
Solution Approach 2:
The patent applies different brightness correction factors to different areas of the display panel based on their specific brightness characteristics. By calculating area-specific correction factors and applying them locally, the system addresses voltage differences between centers and corners without uniform treatment, thereby improving manufacturing precision of brightness uniformity.
2Manufacturing precision
If brightness correction is applied to improve uniformity, then brightness uniformity improves, but the complexity of the correction process increases
Solution Approach 1:
The patent performs brightness measurements and calculates correction factors in advance before the actual display production. By pre-measuring brightness characteristics of different areas and pre-calculating correction factors, the system simplifies the actual correction process during manufacturing, reducing real-time measurement and correction complexity.
Solution Approach 2:
The patent uses measured brightness data from different areas to calculate correction factors that feed back into the manufacturing process. This feedback mechanism allows the system to adjust correction parameters based on actual measured brightness variations, making the correction process more accurate and manageable despite the increased complexity.
Data Source
AI summary
A brightness correcting method of a display panel and a brightness correcting device are disclosed. The method divides a displayed image of the display panel into a first area and a plurality of second areas disposed surrounding the first area. A brightness correction factor of each of the second areas is obtained according to a brightness of the first area and a brightness of each of the second areas. An optical compensation value is adjusted according to the brightness correction factor. The method corrects a brightness of the display panel to allow uniformity of overall brightness of the display panel to meet requirements.