Rotating Photosensor Unit for Reduced Bezel Luminance Measurement
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Solution Overview
Problem
Conventional photosensor devices for measuring luminance and chromaticity in liquid crystal monitors face challenges in designability due to their size, which affects bezel width and thickness, and are susceptible to external light interference when positioned peripherally, limiting their ability to accurately measure optical properties near the center of the display panel.
Innovation Solution
A photosensor device with a sensor unit that performs multiple rotation operations, allowing it to smoothly exit and enter a reduced bezel width or thickness, using a shaft and drive mechanism for precise positioning and minimizing external light interference by rotating perpendicular to the display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sensor unit is positioned peripherally in the bezel, then the device structure is simplified, but external light interference increases and measurement precision deteriorates
Solution Approach 1:
The sensor unit is moved from a peripheral position to a central position on the display panel, utilizing the central region as a new spatial dimension for measurement. This allows the sensor to measure luminance and chromaticity near the center of the display, reducing external light interference while maintaining device structure simplicity through the rotation mechanism.
Solution Approach 2:
The sensor unit is made rotatable relative to the bezel, allowing it to dynamically change its orientation and position. The sensor can rotate to face the display screen for measurement and rotate away to avoid external light interference, providing dynamic adaptability that resolves the contradiction between structural simplicity and measurement precision.
2Adaptability or versatility
If the bezel width or thickness is reduced, then design flexibility and viewability improve, but the sensor unit cannot smoothly exit and enter the bezel
Solution Approach 1:
Instead of moving the sensor unit linearly in and out of the bezel, the invention utilizes rotational motion as an alternative dimension. The sensor unit rotates within the limited bezel space to achieve measurement positioning, eliminating the need for sufficient linear travel distance and enabling smooth operation even with reduced bezel width or thickness.
Solution Approach 2:
The sensor unit employs rotational degrees of freedom rather than linear translation, allowing it to dynamically position itself for measurement within the constrained bezel space. This dynamic rotation mechanism ensures smooth entry and exit operations without requiring increased bezel dimensions.
3Measurement precision
If the sensor unit is positioned near the center of the display panel, then external light interference is reduced and measurement precision improves, but the bezel width or thickness must be increased
Solution Approach 1:
The invention uses rotational motion as an alternative to linear extension. By rotating the sensor unit within the existing bezel boundaries, the system can position the sensor near the center of the display panel without increasing bezel width or thickness, as the rotational path fits within the circular/rectangular bezel perimeter.
Solution Approach 2:
The sensor unit is nested within the bezel structure, utilizing the rotational space inside the bezel perimeter. The sensor can rotate to reach the central measurement position while remaining contained within the bezel boundaries, effectively nesting the measurement function within the existing structural constraints.
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
Enables accurate measurement of luminance and chromaticity near the center of the display panel without increasing bezel width or thickness, reducing external light impact and enhancing design flexibility while maintaining high actuation reliability.
Implementation Method 1
the sensor unit approaches a display screen of the image display panel by performing a plurality of rotation operations
Implementation Method 2
a photosensor used to measure the luminance, chromaticity, or the like of the image display panel
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 3A~3C
AI summary
Provided is a photosensor device that even when the width and thickness of a bezel are reduced, can cause a sensor unit to smoothly exit and enter the bezel. Using drive means, a photosensor device (1) causes a sensor unit (3) to perform multiple rotation operations (4a, 4b, 4c, 4d). Thus, the sensor unit (3) is allowed to approach a display screen (101a) of an image display panel (101) for a measurement and to be stored in a bezel (20) after the measurement.