LCD Driving Circuit Power Mode Switching
Solution Overview
Problem
Existing driving circuits for liquid crystal displays face inefficiency and higher component temperatures under high power conditions, particularly when using simple multi-way boost methods, which can increase the cost of control chips.
Innovation Solution
A driving circuit that selects different working modes based on the output power of the boost module, utilizing a boost module, power management module, power detection module, and microcontroller unit to distribute power efficiently, switching between multiple boost sub-modules to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a simple multi-way boost method is adopted, then the temperature of components is lowered, but the cost of the control chip is increased
Solution Approach 1:
The patent implements dynamic switching between different boost working modes (single-way, multi-way, and bypass modes) based on real-time power demand detection. The microcontroller unit dynamically adjusts the boost module's operation mode according to the detected output power level, optimizing component temperature management without requiring a complex control chip design.
Solution Approach 2:
The system changes operational parameters by switching between different working modes (single-way boost, multi-way boost, bypass) based on power demand thresholds. This parameter-based mode switching allows the system to adapt to different power requirements while maintaining cost-effective control chip design.
2Device complexity
If a single way boost is adopted, then the control chip cost is reduced, but the temperature of components is higher under high power condition
Solution Approach 1:
The system dynamically transitions from single-way boost mode at low power to multi-way boost mode at high power conditions. This dynamic adaptation allows the use of a simpler control chip while ensuring effective temperature management when power demand increases.
Solution Approach 2:
The patent segments the power delivery system into multiple parallel boost sub-modules that can be selectively activated. This segmentation allows the system to distribute power across multiple channels when needed, reducing component temperature without requiring a complex control chip.
3Productivity
If multi-way boost is used under high power condition, then the efficiency is improved, but the device complexity increases
Solution Approach 1:
The system dynamically activates multi-way boost operation only when high power efficiency is required, transitioning to simpler modes when demand is low. This dynamic approach achieves high efficiency when needed while avoiding unnecessary complexity in the control chip design.
Solution Approach 2:
The control system changes operational parameters by switching between different boost modes based on detected power levels. This parameter-based control achieves efficient power delivery at high loads without requiring permanently complex control circuitry.
Data Source
AI summary
The present disclosure provides driving circuit used to a liquid crystal display, which includes a boost module, a power management module, a power detection module and a micro controller unit, the power management module is connected to the boost module and the micro controller unit, the boost module, the power detection module and the micro controller unit are connected in sequence, the power detection module detects an output power of the boost module, and the micro controller unit switches a working mode of the boost module according to the output power. The driving circuit of the present disclosure may select different working modes according to a magnitude of the output power, so as to distribute the power and increase the efficiency, thus it may effectively solve the problem of lower efficiency and higher temperature of the component under the high power condition.