Power Supplying Module Clock Adjustment for LCD Driving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The power supplying module in liquid crystal display (LCD) systems consumes additional current continuously, even when the driving module does not require it, due to the use of contiguous pulses with fixed time intervals for charging the voltage source, leading to inefficiency as the resolution and size of the display increase.
Innovation Solution
A power supplying module with a clock generating unit that adjusts the clock signal to charge the output end only when an event occurs, such as significant current draw or voltage drop, to provide adequate driving ability while minimizing power consumption, comprising a power supplying unit and a clock generating unit that synchronizes charging with the driving module's needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supplying module uses contiguous pulses with fixed time intervals to charge the voltage source, then the voltage source is continuously charged to maintain voltage, but additional power is consumed when the driving module does not require current
Solution Approach 1:
The patent changes the continuous charging action into periodic charging action. The clock signal generates pulses at specific intervals, and the power supplying unit charges the voltage source only during these periodic pulses, rather than continuously. This periodic action reduces power consumption while maintaining voltage stability through timed charging cycles.
Solution Approach 2:
The patent implements feedback by having the clock generating unit adjust the clock signal based on the driving module's current requirements. When the driving module needs current, the clock signal triggers charging; when it doesn't need current, charging is suspended. This feedback mechanism ensures the voltage source is charged only when necessary, eliminating wasted power consumption.
2Reliability
If the power supplying module charges the voltage source continuously, then the voltage VGH is maintained, but power is wasted when the driving module does not draw current
Solution Approach 1:
The patent makes the charging system dynamic by allowing the clock generating unit to adjust the clock signal based on real-time conditions. The charging frequency and timing are not fixed but adapt to the driving module's needs, enabling the system to maintain voltage reliably while avoiding energy waste by charging only when the driving module requires current.
3Manufacturing precision
If the resolution of the liquid crystal display increases, then the image quality is improved, but the charging times of the driving device decrease and loadings increase
Solution Approach 1:
The patent applies preliminary action by having the power supplying unit charge the voltage source in advance during periodic clock pulses, before the driving module actually needs the current. This allows the voltage source to be pre-charged to the required level, ensuring adequate charging time is available even as display resolution increases and charging windows decrease.
Data Source
AI summary
A power supplying module for an electronic device with a display function includes a first power supplying unit, for charging an output end according to a first clock signal, wherein the output end is coupled to a driving module of the electronic device; and a clock generating unit, for adjusting the first clock signal when an event occurs to make the first power supplying unit charge the output end when the event occurs.