Power Supply Circuit Stabilizes AMOLED Display Power Fluctuations
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Solution Overview
Problem
AMOLED display apparatuses experience unstable power consumption due to fluctuating power demands, leading to reduced lifespan of the power source and deteriorated Electromagnetic Interference (EMI) characteristics.
Innovation Solution
A power supply circuit with a detecting module that adjusts power supply voltage based on detected parameters, switching between low and high power modes to stabilize power consumption, comprising a charging/discharging module that charges or discharges accordingly to maintain stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power source directly supplies electricity to the AMOLED panel without power consumption stabilization, then the display can operate with high luminance and large current, but the power consumption fluctuates substantially leading to reduced power source lifespan and deteriorated EMI characteristics
Solution Approach 1:
The patent introduces a power consumption stabilization circuit as an intermediary component between the power source and the AMOLED panel. This circuit includes a detecting module that monitors power consumption and a controlling module that adjusts power supply accordingly, thereby mediating the direct connection and preventing substantial power fluctuations from reaching the power source, thus extending its lifespan and improving EMI characteristics
Solution Approach 2:
The patent implements a feedback mechanism where the detecting module continuously monitors the power consumption of the AMOLED panel and feeds this information to the controlling module. The controlling module then adjusts the power supply voltage or current based on the detected power consumption level, creating a closed-loop control system that stabilizes power consumption and prevents excessive fluctuations that would otherwise reduce power source lifespan
2Illumination intensity
If the power source directly supplies electricity to the AMOLED panel, then the display can achieve high luminance output, but the sharp power consumption changes deteriorate the EMI characteristics of the product
Solution Approach 1:
The power consumption stabilization circuit serves as an intermediary that decouples the direct connection between the power source and AMOLED panel. The detecting module monitors power consumption levels and the controlling module adjusts power supply to smooth out sharp transitions, thereby reducing electromagnetic interference generated by abrupt power changes while maintaining the panel's ability to achieve high luminance when needed
3Power
If the detecting module continuously monitors power consumption and adjusts power supply dynamically, then power consumption stability is improved, but the device complexity increases due to additional controlling components
Solution Approach 1:
The controlling module is designed to perform multiple functions: it detects power consumption levels, determines whether power consumption exceeds thresholds, and adjusts power supply accordingly. By consolidating these functions into a single multi-functional module rather than separate dedicated components for each function, the patent reduces overall circuit complexity while maintaining power consumption stability
Data Source
AI summary
A power supply circuit and display apparatus, comprising power source (1), charging/discharging module (2), detecting module (3), the detecting module detects detecting parameter on power-supply path, feeds back corresponding mode signal to the power source according to the detected detecting parameter, and outputs preset operation voltage to load (4); the power source receives the mode signal fed back from the detecting module, outputs power supply voltage corresponding to the mode signal, and charges the charging/discharging module when the mode signal is the low power signal; and the charging/discharging module is discharged to the detecting module when the power source outputs the supply voltage corresponding to the high power signal, and is charged when the power source outputs the supply voltage corresponding to the low power signal. The circuit can avoid effectively that the consumption of the power source fluctuates significantly with the power consumption changing of the load thereby the power source operates stably.