Display Color Correction via Internal Backlight Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display color correction methods are time-consuming, complicated, and unreliable due to dependence on external colorimeters, failing to provide stable color correction as backlight intensity degrades over time, affecting brightness and chrominance.
Innovation Solution
A method and system for real-time color correction in displays that senses backlight intensity, adjusts it to a standard, estimates color information using panel characteristics, and applies color gain compensation to maintain original color performance, utilizing internal sensing and processing to compensate for backlight changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external colorimeter is used to measure and correct display color, then color correction can be achieved, but the process becomes time-consuming and complicated
Solution Approach 1:
The display device performs color correction autonomously using its own sensing units to detect backlight intensity and panel color characteristics, eliminating the need for external colorimeters and manual operation. The processing module automatically calculates compensation values and adjusts display parameters, making the system self-correcting and significantly reducing user involvement time.
Solution Approach 2:
The invention extracts the color correction functionality from external devices and integrates it directly into the display device itself. By incorporating sensing units within the display structure that can detect backlight intensity and panel characteristics, the system removes the dependency on external colorimeters, thereby simplifying the correction process and reducing time requirements.
2Measurement precision
If external colorimeter is used for color correction, then color information can be measured, but the correction reliability depends on the accuracy of the external device
Solution Approach 1:
The invention merges the sensing function directly into the display device by integrating sensing units that detect backlight intensity and panel color characteristics within the same system. This combination ensures that the measurement and correction processes are tightly coupled, improving both measurement precision and correction reliability by eliminating external dependencies and calibration mismatches.
3Device complexity
If backlight intensity is not compensated, then display structure remains simple, but brightness and chrominance deteriorate due to backlight aging
Solution Approach 1:
The invention implements a feedback mechanism where sensing units continuously monitor backlight intensity and panel color characteristics, and the processing module uses this feedback to automatically calculate compensation values and adjust display parameters. This closed-loop system maintains stable color performance over time without requiring complex manual intervention or frequent recalibration.
Solution Approach 2:
The system performs preliminary measurement of backlight intensity and panel characteristics to generate compensation values in advance. By proactively detecting changes in backlight performance and pre-calculating compensation parameters, the system prevents color deterioration before it becomes noticeable, maintaining reliable color performance without adding significant structural complexity.
Data Source
AI summary
A display and a color correction method are disclosed. The display includes a panel and a backlight module. The color correction method includes steps of: (a) sensing a real-time backlight intensity of the backlight module; (b) increasing a backlight intensity of the backlight module when the real-time backlight intensity is different from a standard backlight intensity of the backlight module; (c) sensing a compensated backlight intensity of the backlight module and estimating a first real-time color information of the panel according to the compensated backlight intensity and a first panel color characteristic information, wherein the first panel color characteristic information corresponds to the penetration characteristics of the panel; and (d) estimating a first color gain compensation value for the panel according to the first real-time color information and compensating the colors displayed on the panel when the panel displaying an image according to the first color gain compensation value.