Transparent Photon Collection Panel for Dead Pixel Inspection
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Solution Overview
Problem
Digital signage devices with transparent solar panels face challenges in detecting dead pixels due to harsh outdoor environments, leading to sub-optimal content delivery and waste for advertisers and society.
Innovation Solution
A display device with a transparent photon collection panel and an analog-to-digital converter, controlled by a processor, divides the pixel matrix into areas, assigns threshold values, and compares photon current values with these thresholds to determine flag values for each area, using a method that includes generating display signals and matrices to inspect pixels effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a transparent photon collection panel is added to detect dead pixels, then pixel detection capability is improved, but device complexity increases
Solution Approach 1:
The transparent photon collection panel serves dual purposes: it collects photons for pixel detection while maintaining transparency to allow light transmission for display functionality. This multi-functionality resolves the contradiction by integrating detection capability without adding separate opaque components that would increase complexity.
Solution Approach 2:
The transparent photon collection panel acts as an intermediary layer between the display panel and the environment. It mediates between the need for light transmission (display function) and photon collection (detection function), enabling both operations simultaneously without requiring complex additional systems.
2Measurement precision
If the pixel matrix is divided into multiple areas for inspection, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The pixel matrix is divided into multiple inspection areas, with each area inspected independently through systematic control signals. This segmentation improves measurement precision by enabling localized detection and reduces complexity by breaking down the inspection process into manageable, repeatable units rather than requiring complex global analysis.
3Productivity
If threshold values are assigned to each area for systematic inspection, then productivity is improved, but device complexity increases
Solution Approach 1:
Threshold values are pre-assigned to each inspection area before the actual inspection process begins. This preliminary action improves productivity by establishing detection criteria in advance, allowing for rapid comparison and decision-making during inspection without requiring complex real-time calculations or adaptive algorithms.
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
This solution enables efficient detection of dead pixels in digital signage devices, ensuring optimal content delivery and reducing waste by accurately identifying defective pixels through a systematic and efficient inspection process.
Implementation Method 1
a transparent photon collection panel attached to the display panel... The transparent photon collection panel is configured to receive the light displayed by the area and to generate an analog signal in response to the light
Data Source
AI summary
Aspects of the present disclosure directs to inspection of pixels of a display device using photon collection. In certain embodiments, the display device includes a display panel defining multiple pixels in a pixel matrix. A controller divides the pixel matrix into multiple areas, with each area including at least one pixel, and assigns a threshold value for each area. The controller then controls the pixels in one area to emit light displaying a color. A transparent photon collection panel attached to the display panel receives the light displayed by the area, and generates an analog signal in response to the light. An analog to digital (A/D) converter converts the analog signal to a photon current value. The controller receives the photon current values corresponding to each area, and compares the photon current value with the threshold value for each area to determine a flag value for the area.