Display Device Crosstalk Correction via Segmented Gamma Tables
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Solution Overview
Problem
Existing display devices using liquid crystal panels face challenges in effectively correcting crosstalk, particularly due to differences in visual angles and positions on the display area, leading to inadequate crosstalk correction, especially at the edges of the display area.
Innovation Solution
A display device with a crosstalk correcting portion that uses a crosstalk correcting table to perform gamma correction differently for various areas of the display panel, divided into non-rectangular sections, and employs Frame Rate Control (FRC) to refine gradation changes, thereby addressing the varying crosstalk amounts across the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single uniform crosstalk correction method is applied across the entire display area, then the correction process is simple, but the correction effectiveness deteriorates at the edges of the display area due to varying visual angles
Solution Approach 1:
The display area is divided into multiple regions (first display area and second display area) based on visual angle characteristics. Different crosstalk correction methods are applied to each region: a first crosstalk correction method for the first display area and a second crosstalk correction method for the second display area. This segmentation allows each region to receive optimized correction tailored to its specific visual angle characteristics, resolving the contradiction between simple correction process and effective correction.
Solution Approach 2:
Different crosstalk correction characteristics are applied to different regions of the display area. The first crosstalk correction method is specifically designed for the first display area with certain visual angle characteristics, while the second crosstalk correction method is designed for the second display area with different visual angle characteristics. This local quality approach ensures that each region receives the appropriate correction intensity and type, improving overall correction effectiveness without unnecessarily complicating the entire correction process.
2Manufacturing precision
If different crosstalk correction methods are applied to different display areas, then the correction effectiveness improves, but the device complexity increases
Solution Approach 1:
The display area is segmented into multiple regions with distinct visual angle characteristics. A first crosstalk correction method is applied to the first display area and a second crosstalk correction method is applied to the second display area. This segmentation enables region-specific optimization of correction effectiveness while maintaining manageable system complexity through structured organization of correction methods.
Solution Approach 2:
The crosstalk correction process utilizes parameter changes by applying different correction characteristics (such as correction intensity, frequency, or methodology) to different display areas. The first crosstalk correction method and second crosstalk correction method differ in their parameters to match the visual angle characteristics of their respective regions, thereby improving correction effectiveness without requiring complete redesign of the correction system.
3Device complexity
If gamma correction is applied uniformly across the display area, then the processing is simple, but the image quality deteriorates at edges due to varying visual angles and crosstalk amounts
Solution Approach 1:
The display area is divided into multiple regions (first display area and second display area) based on visual angle characteristics. Different gamma correction methods are applied to each region: a first gamma correction method for the first display area and a second gamma correction method for the second display area. This segmentation allows each region to receive gamma correction optimized for its specific visual angle, improving image quality while maintaining manageable processing complexity.
Solution Approach 2:
Different gamma correction characteristics are applied to different regions of the display area. The first gamma correction method is specifically designed for the first display area with certain visual angle characteristics, while the second gamma correction method is designed for the second display area with different visual angle characteristics. This local quality approach ensures that each region receives the appropriate gamma correction to optimize image quality without unnecessarily complicating the entire correction process.
Data Source
AI summary
Disclosed herein is a display device, including: a display panel having a display area having a plurality of pixels each composed of one or more sub-pixels, a first image and a second image being alternately displayed adjacent to each other in the sub-pixels, the first image and the second image being displayed in visual directions different from each other so as to be adapted to be discriminated from each other; and a crosstalk correcting portion having a crosstalk correcting table, configured to carry out crosstalk correction for images different from one another by using the crosstalk correcting table; wherein the display area is divided into a plurality of areas, and gamma correction which differs so as to correspond to the plurality of areas obtained through the division, respectively, is carried out for an image as an object of the crosstalk correction.