OLED Display Color Mapping for Faster Gamut Correction
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Solution Overview
Problem
The increasing demand for color accuracy in OLED display panels necessitates efficient methods for correcting the color gamut of display devices, as existing technologies face challenges in accurately reproducing a standard color gamut and are time-consuming in the correction process.
Innovation Solution
A display test apparatus and method that includes a measuring apparatus and a calculating device to provide sample pixel values to OLED panels, measure color coordinate values, generate parameters, and create mapping tables to align the display's color output with a standard color gamut, thereby correcting the color gamut and reducing correction time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional color gamut correction methods are used, then color accuracy can be improved, but correction time increases significantly
Solution Approach 1:
The patent pre-calculates and stores mapping tables for multiple OLED panels with different characteristics during the manufacturing process. When correction is needed, the system simply retrieves the appropriate pre-prepared mapping table based on panel identification, avoiding time-consuming real-time calculations while maintaining accurate color correction
Solution Approach 2:
The patent divides the color correction process into discrete segments by creating separate mapping tables for different OLED panel types and characteristics. Each mapping table is optimized for specific panel parameters, allowing the system to select the most appropriate correction data without processing all possible correction scenarios, thus reducing overall correction time
2Measurement precision
If individualized mapping tables are generated for each OLED panel, then color accuracy is improved, but the complexity of the correction system increases
Solution Approach 1:
The patent creates a universal mapping table structure that can accommodate multiple OLED panel types and characteristics through standardized parameters and formats. The system uses a unified approach to generate, store, and retrieve mapping tables for different panels, reducing the need for entirely separate correction systems for each panel type while maintaining individualized accuracy
Solution Approach 2:
The patent manages complexity by systematically varying key parameters (such as panel identification, measurement conditions, and correction algorithms) to generate different mapping tables from a common framework. This parameter-based approach allows individualized correction for each panel while using a standardized management system, reducing overall system complexity
Data Source
AI summary
A display test apparatus includes a measuring apparatus and a calculating device connected to the measuring apparatus. The measuring apparatus provides a sample pixel value to a first display device including a first display panel, measures a first color coordinate value of an image displayed by the first display panel in response to the sample pixel value. The calculating device generates a first parameter of the first display panel in response to the first color coordinate value, generates a target color coordinate value in response to the sample pixel value, and generates a first mapping table in response to the first color coordinate value, the first parameter and the target color coordinate value.