Movable Calibration Sensor for Display Panel
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Solution Overview
Problem
Image display devices face challenges in maintaining consistent color, brightness, and saturation over time due to minor hardware or software differences, requiring frequent calibration of the display panel to achieve optimal color output.
Innovation Solution
An image display device equipped with a built-in calibration sensor and a movable bar system that allows the sensor to obtain calibration information from specific areas of the display panel, using a lead screw mechanism for precise movement and shielding to minimize ambient light interference, with a controller analyzing and optimizing calibration data for each screen region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a calibration sensor is built-in to calibrate the display panel, then calibration accuracy is improved, but device complexity increases
Solution Approach 1:
The calibration sensor is nested within the movable bar structure, which itself is nested within the holder portion of the display device. This hierarchical nesting allows the calibration sensor to be integrated into the existing device structure without requiring separate external calibration equipment, thereby improving calibration accuracy while minimizing the increase in device complexity.
Solution Approach 2:
The movable bar acts as an intermediary mechanism that enables the calibration sensor to access different areas of the display panel. Instead of making the entire sensor assembly complex and stationary, the movable bar provides a simple mechanical intermediary that guides the sensor to required positions, resolving the contradiction between measurement precision and device complexity.
2Adaptability or versatility
If the calibration sensor is made movable to cover different screen regions, then calibration coverage is improved, but device complexity increases
Solution Approach 1:
The calibration function is segmented from the main display structure by placing the calibration sensor in a separate movable bar. This segmentation allows the sensor to be independently moved to different screen regions without affecting the overall display structure, thereby improving calibration coverage while keeping the added complexity localized and manageable.
Solution Approach 2:
The calibration sensor is made dynamic through the movable bar mechanism, transitioning from a fixed position to a movable one. This dynamic capability allows the sensor to adapt to different calibration requirements across various screen regions, improving versatility while the simple linear movement mechanism keeps the complexity increase minimal.
3Measurement precision
If ambient light shielding is added during calibration, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The ambient light shielding function is merged with the movable bar structure by forming the shielding wall as an integral part of the bar. This combination eliminates the need for separate shielding components and their associated mechanisms, thereby improving calibration accuracy through effective light blocking while minimizing the increase in device complexity.
Solution Approach 2:
Ambient light shielding is applied locally at the calibration sensor position rather than throughout the entire device. The shielding wall is formed only where needed on the movable bar to block light from reaching the sensor during calibration, providing measurement precision improvement with minimal additional structure and complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables accurate and efficient calibration of display panels, ensuring consistent visual output across different screen regions and modes, improving the overall quality of visual information displayed.
Implementation Method 1
a lead screw with a thread on the outer circumference may be placed on at least one side of the casing to extend along the side of the casing and rotate by a driving unit, and the moving bar may be screwed to the lead screw and move in the first direction as the lead screw turns
Implementation Method 2
a calibration sensor that is mounted at the moving bar so as to be movable in a second direction perpendicular to the first direction and obtains calibration information for the display panel
Implementation Method 3
a shielding wall protruding toward the display panel is formed on the moving bar so that ambient light is shielded when the calibration sensor obtains calibration information
Data Source
AI summary
An image display device comprises a display panel, a casing to hold the display panel, a moving bar provided at the casing and configured to be movable in a first direction while overlapping the display panel, a calibration sensor at the moving bar to be movable in a second direction perpendicular to the first direction and to obtain calibration information related to the display panel, and a controller to control the display panel based on the obtained calibration information.