Display Brightness Dimming for Longer Service Life
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Solution Overview
Problem
Displays used in retail, industry, logistics, and laboratory environments experience significant reductions in effective lifetime due to prolonged operation and high brightness, despite being designed for long hours of use, which is exacerbated by non-optimal operating conditions, leading to premature degradation.
Innovation Solution
Implement an active and automated display dimming method that adjusts brightness parameters based on initial settings and monitored aging indicators, such as brightness, temperature, and operating time, to maintain consistent display brightness and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display is operated with high brightness for legal-for-trade requirements, then the information clarity for customers is improved, but the display lifetime is significantly reduced
Solution Approach 1:
The patent implements dynamic brightness adjustment by continuously monitoring the display's actual brightness and automatically adapting the brightness parameter throughout the display's lifetime. This dynamic approach allows the system to maintain legally required brightness levels while compensating for aging effects, thereby extending the effective lifetime without compromising information clarity.
Solution Approach 2:
The system employs a feedback mechanism where the actual display brightness is continuously measured and compared against target values. Based on this feedback, the brightness parameter is automatically adjusted to compensate for aging. This closed-loop control ensures that the display maintains optimal brightness levels throughout its extended lifetime while meeting legal-for-trade requirements.
2Duration of action of stationary object
If the display brightness is continuously monitored and automatically adapted throughout the lifetime, then the display lifetime is extended, but the device complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the display system automatically monitors its own brightness and adjusts its own parameters without external intervention. The controller continuously reads the actual brightness, compares it to target values, and adapts the brightness parameter autonomously. This self-regulating approach extends display lifetime while minimizing the need for additional complex control infrastructure.
Solution Approach 2:
The system extends display lifetime by dynamically changing the brightness parameter based on monitored aging effects. Rather than adding complex hardware, the solution involves software-based parameter adaptation where the brightness level is continuously adjusted within existing system capabilities. This parameter-change approach achieves lifetime extension with minimal increase in device complexity.
3Duration of action of stationary object
If the initial brightness parameter is set below maximum value, then the display lifetime is increased, but the initial brightness clarity may be insufficient
Solution Approach 1:
The patent applies preliminary action by pre-configuring the brightness parameter below maximum value at the start of the display's lifetime. This initial sub-maximal setting is deliberately chosen to reduce aging stress from the beginning. The system then compensates for this lower initial brightness through continuous monitoring and gradual parameter adaptation, ensuring that both lifetime and brightness clarity requirements are met throughout operation.
Data Source
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AI summary
The invention relates to the field of displays (monitors, terminals) used in retail, industry, logistics, transportation and laboratory, in particular displays for retail weighing devices. Provided is a method for increasing the lifetime of such displays comprising a step S1 of setting a brightness dimming parameter 10 of the display 2 to an initial value 13 that is below a possible maximum value 14, a step S2 of determining whether a parameter 11, 11', 12, 12' that is characteristic for an aging of the display 2 reached a threshold value 35, 45, 45', 45", 55, 55', 55", 55'", and a step S3 of increasing the brightness dimming parameter 10 if the parameter 11, 11', 12, 12' that is characteristic for an aging of the display 2 reached the threshold value 35, 45, 45', 45", 55, 55', 55", 55'". Further provided are a corresponding display, computer program, and retail, industry, logistics, transportation and laboratory devices, in particular a corresponding retail weighing device.