Adjustable Charging Pump for TFT LCD Power Supply
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Solution Overview
Problem
Conventional charging pump modules for TFT LCDs require longer operational periods to achieve a predetermined charging voltage, making it difficult to design circuits that comply with different specifications and reduce charging time.
Innovation Solution
A modified power supply system with a control module generating adjustment charging values, a first charging pump module outputting charging voltage based on these values, and an amplifying module processing dynamic charging operations to achieve the predetermined voltage within a shorter period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional charging pump module is used to drive TFT LCD with higher resolutions and more driving units, then the display can achieve higher resolution, but the charging period becomes longer and cannot meet the shorter driving period requirement
Solution Approach 1:
The patent applies dynamics by making the charging pump module adjustable through a control module that can dynamically change the charging value. This allows the charging period to be adapted to different display resolutions and driving unit configurations, enabling the system to meet shorter driving period requirements for high-resolution displays while maintaining compatibility with various display specifications.
2Device complexity
If the charging pump module operates with fixed charging parameters, then the circuit design is simple, but it cannot comply with different TFT LCD specifications and resolutions
Solution Approach 1:
The patent implements parameter changes by introducing a control module that can adjust the charging value of the charging pump module. This allows the system to modify charging parameters dynamically to comply with different TFT LCD specifications, resolutions, and driving unit configurations, thereby achieving versatility without requiring completely different circuit designs for each application.
3Volume of moving object
If passive elements are moved inside the driving chip to reduce flexible PCB size, then the product becomes thinner and lighter, but the charging period increases making circuit design more difficult
Solution Approach 1:
The patent addresses this contradiction by implementing a dynamic charging pump module controlled by a control module. This allows the charging parameters to be adjusted to compensate for the increased charging period caused by moving passive elements inside the driving chip, thereby maintaining compatibility with thinner and lighter product designs while meeting charging period requirements.
Data Source
AI summary
A power supply system includes a control module for generating a control signal; a first charging pump module, coupled to the control module, for generating an adjustment charging value according to the control signal, and outputting a charging voltage according to the adjustment charging value and a conduction voltage source; an amplifying module, coupled to the first charging pump module, for utilizing the charging voltage to generate an amplifying voltage; and a load module, coupled to the amplifying module, for processing a dynamic charging operation according to the amplifying voltage.