Flexible IC Card Power Management for Voltage Stability
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Solution Overview
Problem
Conventional display-enabled IC cards require an external card reader for data access and suffer from unstable voltage supply, leading to poor sensing ability and limited usability.
Innovation Solution
A flexible card with a built-in power management module and driving control module that independently supplies driving voltage to the smart IC and flexible display, allowing direct data reading and display without external devices, and featuring a communication module for security authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the IC card uses conventional power supply methods requiring external card readers, then the card can perform basic data communication, but the card cannot provide real-time data display and requires external devices for operation
Solution Approach 1:
The card incorporates a built-in power supply unit that enables it to autonomously power the display and communication functions without requiring an external card reader. The power supply unit includes a battery and power management circuitry that allows the card to independently operate and provide real-time data display to users.
2Reliability
If the IC card uses induced current from external signals for power supply, then the card structure remains simple, but the voltage supply becomes unstable causing poor sensing ability
Solution Approach 1:
The card incorporates a built-in power supply unit that autonomously provides stable voltage to internal circuits without relying on external induced current. The power supply unit includes a battery and power management circuitry that maintains consistent voltage levels, ensuring reliable operation of the smart IC and display functions.
Solution Approach 2:
The power supply unit converts stored chemical energy from the battery into stable electrical energy through voltage regulation circuits. This energy conversion process provides consistent voltage parameters to the smart IC and display, eliminating the voltage instability caused by external signal-induced current variations.
3Adaptability or versatility
If the card includes display and communication functions, then the card becomes more versatile, but the power consumption increases requiring more sophisticated power management
Solution Approach 1:
The power management circuitry dynamically adjusts power distribution to different components based on operational requirements. When the display needs to show data, power is allocated to the display and communication modules. When not in use, power consumption is reduced by shutting down non-essential functions, extending battery life while maintaining functional versatility.
Data Source
AI summary
A display-enabled card with security authentication function includes a flexible card structure internally provided with a flexible electronic system, which includes a flexible display, a power supply module for supplying a DC voltage, a driving control module having a DC voltage converter for converting the DC voltage into a first driving voltage; a smart IC connected to the driving control module, a communication module connected to and working with the smart IC to perform security authentication, and a power management module arranged between the power supply module, the driving control module and the smart IC to provide the DC voltage to the driving control module and convert the DC voltage into a second driving voltage. The driving control module directly reads data stored in the smart IC and drives the flexible display to show the read data, so as to avoid poor sensing or data communication due to unstable voltage.