Voltage Stabilizing Device for Display Panels
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Solution Overview
Problem
The increasing resolution and current demands in display panels lead to significant voltage instability and large ripples during light and heavy load changes, necessitating effective voltage control solutions.
Innovation Solution
A voltage stabilizing device comprising a signal detecting and amplifying circuit, a feedback voltage signal generating circuit, and a logic processing circuit that adjusts feedback voltage amplitudes to maintain stable output voltages, using operational amplifiers, MOS transistors, and resistors to control the output voltage based on detected voltage thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display panel resolution and current demand are increased, then the image quality and brightness are improved, but the output voltage becomes unstable and ripples increase during light and heavy load changes
Solution Approach 1:
The patent implements dynamic feedback voltage adjustment by detecting the actual output voltage and dynamically changing the feedback voltage amplitude based on load conditions. The logic processing circuit adjusts the feedback voltage signal in real-time according to the detected operating voltage, enabling the system to adapt to light and heavy load changes while maintaining stable output voltage.
Solution Approach 2:
The patent employs a feedback mechanism where the signal detecting and amplifying circuit continuously monitors the output voltage and feeds this information back to the logic processing circuit. This closed-loop feedback system allows the controller to adjust the feedback voltage signal based on the actual output voltage, thereby stabilizing the output during load transitions.
2Measurement precision
If the feedback voltage amplitude is increased to stabilize output voltage, then the voltage control precision is improved, but the system complexity increases
Solution Approach 1:
The patent divides the control system into distinct functional modules: a signal detecting and amplifying circuit for voltage detection, a logic processing circuit for signal processing and control signal generation, and a feedback voltage signal generating circuit for feedback voltage adjustment. This segmentation allows each module to perform its function independently, simplifying the overall design while maintaining precision.
Solution Approach 2:
The logic processing circuit serves multiple functions: it processes the amplified voltage signal, generates the first control signal for the feedback voltage circuit, generates the second control signal for the functional circuit, and adjusts feedback voltage amplitude based on load conditions. This multi-functionality reduces the need for separate dedicated circuits, thereby controlling system complexity.
Data Source
AI summary
The invention provides a voltage stabilizing device. In the voltage stabilizing device, a signal detecting and amplifying circuit detects an operating voltage of the functional circuit, amplifies the detected operating voltage and outputs the amplified voltage signal to a logic processing circuit; the logic processing circuit adjusts a first control signal according to the amplified voltage signal and outputs the adjusted first control signal to a feedback voltage signal generating circuit; the feedback voltage signal generating circuit adjusts a feedback voltage signal according to the adjusted first control signal and outputs the adjusted feedback voltage signal to the logic processing circuit. Moreover, the logic processing circuit further adjusts a second control signal according to the adjusted feedback voltage signal and outputs the adjusted second control signal to the functional circuit, and thereby controls an output voltage of the functional circuit to be kept stable.