Voltage Regulator Circuit for Stable Display Reference Voltage
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Solution Overview
Problem
Conventional TFT-LCD display systems face challenges with unstable supply voltage from external power chips, leading to inefficient reference voltage generation and costly hardware changes when voltage requirements change, as the outputted reference voltage is limited and sensitive to temperature variations.
Innovation Solution
A voltage regulator circuit comprising a power chip, a controlling chip, and a regulating chip, which includes gate circuits and a bias circuit to dynamically regulate output voltage to preset values and convert them into reference voltages, using control signals to manage voltage levels and a feedback circuit to maintain constant output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external power chip supplies a constant supply voltage to a reference voltage chip, then the reference voltage can be generated, but the supply voltage is unstable and sensitive to temperature variations
Solution Approach 1:
The patent implements a feedback mechanism where the voltage regulator module continuously monitors the supply voltage and adjusts its output accordingly. The controlling chip receives feedback about the actual voltage level and dynamically adjusts the control signal to the regulating chip to maintain stable output voltage despite temperature variations or input voltage fluctuations.
Solution Approach 2:
The patent changes the operating parameters of the voltage regulation system by using a regulating chip that can dynamically adjust its regulation characteristics. The system transitions from a fixed constant voltage supply to a dynamically adjustable voltage regulation system that adapts to temperature changes by modifying its regulation parameters in real-time.
2Reliability
If the supply voltage is increased to ensure reference voltage generation, then the reference voltage can be generated, but the temperature of the S-COF becomes too high
Solution Approach 1:
The patent applies dynamics by making the supply voltage adjustable rather than fixed. The voltage regulator module dynamically adjusts the supply voltage level based on actual needs, providing enough voltage to generate the required reference voltage while avoiding excessive voltage that would cause overheating of the S-COF. This dynamic adjustment allows the system to optimize between voltage sufficiency and thermal management.
3Temperature
If the supply voltage is decreased to reduce temperature, then the S-COF temperature is reduced, but the required reference voltage cannot be generated
Solution Approach 1:
The patent introduces a voltage regulator module as an intermediary between the power source and the reference voltage chip. This intermediary actively manages the voltage level, ensuring it is high enough to generate the required reference voltage while being low enough to prevent excessive heating of the S-COF. The regulator acts as a buffer that decouples the conflict between voltage requirements and thermal constraints.
4Adaptability or versatility
If the supply voltage value needs to be changed, then the voltage can be adjusted, but the hardware circuit needs to be changed which is costly and inefficient
Solution Approach 1:
The patent implements universality by designing a voltage regulator module that can provide multiple voltage levels through software control rather than requiring different hardware configurations. The regulating chip and controlling chip work together to provide a universal voltage adjustment capability that can adapt to different voltage requirements without changing the hardware circuit, making the system multi-functional and flexible.
5Power
If a conventional external power chip is used, then the supply voltage can be provided, but the voltage is unstable and hardware changes are required for voltage adjustments
Solution Approach 1:
The patent merges the power provision function with the voltage regulation and control functions into an integrated voltage regulator module. Instead of using a simple conventional power chip, the system combines the power supply capability with active regulation and control mechanisms, allowing the same hardware to both provide power and dynamically adjust voltage levels without requiring hardware changes.
Data Source
AI summary
A voltage regulator circuit includes a power chip, a controlling chip, and a regulating chip. The controlling chip is configured to transmit a control signal, the regulating chip is configured to regulate an outputted voltage from the power chip to a preset voltage according to the control signal. The controlling chip is further configured to convert the preset voltage to a reference voltage.