Light Emitting Display Device Power Optimization via Max Voltage Detection
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Solution Overview
Problem
Existing light emitting display devices face challenges in reducing power consumption while maintaining image quality.
Innovation Solution
The implementation of a light emitting display device that includes a maximum voltage detection unit to detect the maximum voltage across light emitting elements in each pixel, and a power supply unit that adjusts the high electric potential driving voltage based on this maximum voltage, thereby optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed high electric potential driving voltage is applied to all pixels, then all light emitting elements can operate, but power consumption increases due to elements requiring lower voltage
Solution Approach 1:
The patent applies different high electric potential driving voltages to different pixels based on their individual light emitting element characteristics. Each pixel receives a customized voltage level determined by its specific requirements, rather than using a uniform voltage across all pixels. This resolves the contradiction by allowing each element to operate at its optimal voltage (ensuring reliability) while avoiding excessive power consumption from elements that require lower voltage.
Solution Approach 2:
The patent dynamically adjusts the high electric potential driving voltage parameter for each pixel based on detected maximum voltage values. By changing the voltage parameter according to measured characteristics of light emitting elements, the system achieves both reliable operation (by ensuring sufficient voltage) and reduced power consumption (by avoiding unnecessarily high voltages).
2Use of energy by moving object
If the high electric potential driving voltage is reduced to lower power consumption, then power efficiency improves, but image quality deteriorates due to insufficient voltage for proper light emission
Solution Approach 1:
The patent ensures each pixel receives the minimum necessary voltage to achieve proper illumination by detecting the maximum voltage required across all pixels and applying appropriate voltages individually. This prevents image quality deterioration while avoiding excessive power consumption by not applying uniformly high voltages to all pixels.
Solution Approach 2:
The patent uses a feedback mechanism where the maximum voltage detection unit measures the voltage requirements of light emitting elements, and this information is used to adjust the driving voltage applied to pixels. This feedback loop ensures that sufficient voltage is applied to maintain image quality while optimizing power consumption by avoiding unnecessary voltage excess.
3Use of energy by moving object
If individual voltage adjustment for each pixel is implemented, then power consumption is optimized, but device complexity increases due to additional detection and control circuits
Solution Approach 1:
The patent implements a universal maximum voltage detection mechanism that serves all pixels through a shared detection and control system. Rather than requiring completely independent control circuits for each pixel, the system uses a common detection unit that can identify voltage requirements across multiple pixels and a control mechanism that distributes appropriate voltages. This reduces the overall circuit complexity while still achieving individualized voltage adjustment for power optimization.
Data Source
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AI summary
A light emitting display device including: a display panel; a plurality of pixels included in the display panel, each of the plurality of pixels including a driving switching element connected to a first power line and a light emitting element connected to a second power line; a maximum voltage detection unit for detecting a voltage from each of the light emitting elements of each of the pixels and outputting a maximum voltage that has a highest voltage level among the detected voltages; and a power supply unit for correcting a first driving voltage based on the maximum voltage and applying the corrected first driving voltage to the first power line.