Hybrid Banknote Displays with Embedded iLEDs for Validation
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Solution Overview
Problem
Existing banknotes lack electronic functionality that allows for variable value display without the need for separate electronic or optical readers, limiting their usability and security features.
Innovation Solution
Integration of inorganic light-emitting diodes (iLEDs) and a controller on banknotes, powered by piezoelectric or photovoltaic devices, which emit light to display values or patterns, with light pipes and controllers storing values that can be updated by teller machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID or optical readers are embedded in banknotes for validation and value display, then security and electronic functionality are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent combines multiple functions (light emission, value display, security validation) into a single integrated system using LEDs embedded in the banknote. The controller integrates memory, processing, and output control, while the power source integrates energy storage and regulation capabilities, reducing the need for separate components.
Solution Approach 2:
The LED system serves multiple purposes: displaying denominations, providing security validation, enabling electronic value manipulation, and facilitating machine readability. The same hardware infrastructure supports both visual display and machine verification functions, eliminating the need for separate specialized equipment.
2Measurement precision
If separate electronic or optical readers are used to view banknote values, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The banknote itself provides the display function through embedded LEDs that emit light to show values and patterns directly visible to users. The banknote serves its own visualization needs without requiring external reading devices, making it as easy to use as traditional paper currency while providing enhanced electronic functionality.
3Ease of manufacture
If traditional printed banknotes are used, then ease of manufacture is improved, but adaptability deteriorates
Solution Approach 1:
The banknote system transitions from static printed values to dynamic electronically controllable displays. The controller can change displayed values, activate different LED patterns, and update information in real-time, allowing the same physical banknote to adapt to different denominations and security requirements without reissuing new notes.
Solution Approach 2:
The system enables changing of display parameters (brightness, color, patterns, sequences) through electronic control of the LEDs. This allows the banknote to present different information states and security features by modifying optical parameters rather than requiring physical changes to the note itself.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables visible value display and anti-counterfeiting features without specialized equipment, allowing for flexible and secure electronic value manipulation.
Implementation Method 1
one or more light-controlling elements, for example inorganic light-emitting diodes (iLEDs)
Implementation Method 2
the controller controls the light-controlling elements to emit light
Implementation Method 3
a power source, such as a piezoelectric or photovoltaic device
Implementation Method 4
a power source, such as a piezoelectric or photovoltaic device
Data Source
AI summary
A hybrid document includes a flexible document having visible markings. One or more light-controlling elements and a controller are embedded in or on the flexible document. The controller is electrically connected to the one or more light-controlling elements to control the one or more light-controlling elements. A power input connection is electrically connected to the controller, or one or more light-controlling elements, or both. A power source can be connected to the power input connection, for example a piezoelectric or photovoltaic power source. In response to applied power, the controller causes the one or more light-controlling elements to emit light. In some embodiments, the controller includes a memory and a value can be stored in the memory and displayed by the light-controlling element(s). In some embodiments, the value can be assigned or varied by a hybrid currency teller machine.