Luminous Film Unit Cell Layout for Fewer Control Lines
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Solution Overview
Problem
Existing luminous films require a large number of control lines and complex wiring due to the use of metallization layers and integrated circuits, which limits design freedom and increases complexity.
Innovation Solution
Implementing a partially anti-parallel connection of light-emitting diodes in unit cells, allowing for reduced control lines and simplified wiring through a common metallization plane, enabling dynamic control for color mixing and transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large number of control lines and complex wiring are used to selectively control light-emitting diodes, then design freedom and dynamics are improved, but device complexity and wiring complexity increase
Solution Approach 1:
The luminous film is divided into multiple unit cells, each containing a specific arrangement of light-emitting diodes. This segmentation allows complex display functions to be achieved through simple, repeating modular units, reducing overall wiring complexity while maintaining design freedom.
Solution Approach 2:
Multiple light-emitting diodes of different colors (red, green, blue) are combined within each unit cell to form RGB pixels. By merging multiple LEDs and their control functions into a single unit cell with shared control lines, the patent reduces the total number of control lines needed while maintaining full color control capability.
2Ease of operation
If common electrodes and three control lines are used for one RGB pixel, then selective control of light-emitting diodes is improved, but the number of control lines and wiring complexity increase
Solution Approach 1:
The control lines are designed to serve multiple unit cells simultaneously. Each control line can address and control corresponding LEDs across many unit cells, making the control lines multi-functional. This universal control approach reduces the total number of control lines from potentially hundreds to just a few, while maintaining selective control capability.
Solution Approach 2:
The patent uses a repeating pattern of unit cells where the same control line configuration is copied across the entire luminous film. This allows a small number of control lines to be replicated and extended across many unit cells, reducing wiring complexity while maintaining full control functionality.
3Ease of operation
If matrix interconnection or multiplexing is used for two or more metallization planes, then control of light-emitting diodes is improved, but the number of control lines and wiring complexity increase
Solution Approach 1:
The patent extracts and eliminates the need for complex multi-plane metallization and matrix interconnection by using a simplified single-plane approach. The essential control functionality is extracted and implemented through the anti-parallel LED arrangement within unit cells, removing unnecessary wiring complexity while maintaining control capability.
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
Reduces the number of control lines and wiring complexity, enhancing design freedom and transparency while enabling dynamic color mixing and efficient operation of luminous films.
Implementation Method 1
at least one unit cell of light-emitting diodes is arranged
Implementation Method 2
The light-emitting diodes, also known as pixels, often form unit cells with different emitted colors
Data Source
AI summary
A luminous film includes a carrier on or in which at least one unit cell of light-emitting diodes is arranged. Each unit cell includes a first, a second and a third light-emitting diode. The first and second light-emitting diodes of a unit cell are connected anti-parallel to each other. The third light-emitting diode is connected in series with the parallel connection of the first and second light-emitting diode of the unit cell.