Passive LED Display via External Beam Shaping
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Solution Overview
Problem
Conventional display technologies, such as LCD and OLED, require a power supply on the display side, which limits flexibility in deployment.
Innovation Solution
A display control method and device that determines beam shaping parameters, including direction, intensity, and scanning track, to present content on an LED array without the need for a power supply, enabling a completely passive and flexible display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional display technologies (LCD, OLED) are used, then display performance and visual experience are improved, but deployment flexibility is reduced due to the requirement of power supply on display side
Solution Approach 1:
The patent extracts the power supply requirement from the display side by using an external light source to illuminate the LED array. The LED array itself does not need power supply for display operation, as it reflects or emits light passively when illuminated by the external laser beam, thereby achieving deployment flexibility while maintaining display performance
Solution Approach 2:
The patent introduces an external laser beam as an intermediary light source that mediates between the power source and the LED array. The laser beam provides the necessary illumination to the LED array without requiring the display device itself to have a power supply, thus resolving the contradiction between display performance and deployment flexibility
2Reliability
If power supply is disposed on display side, then display function is enabled, but deployment flexibility and convenience are reduced
Solution Approach 1:
The power supply function is extracted from the display device and relocated to an external source (laser beam generator). The LED array can be deployed in locations without access to power supplies, as the external laser beam provides the necessary energy remotely, thereby enabling display function while improving deployment convenience
Solution Approach 2:
The LED array serves itself by passively responding to external light stimulation without requiring its own power supply. When illuminated by the external laser beam, the LED units automatically emit or reflect light to form images, eliminating the need for complex power management systems on the display side
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
The method allows for flexible deployment of LED arrays by illuminating LED units along a scanning track with an electromagnetic beam, providing a realistic visual experience without the necessity of a power input.
Implementation Method 1
Some other display technologies are based on an organic light-emitting diode (OLED), a principle of which is directly changing output light of a light-emitting diode (LED) through voltage regulation, to display different content
Data Source
AI summary
The present application provides a display control method and device, and relates to the display field. The method comprises: determining a beam shaping parameter according to to-be-displayed content and a location of a light-emitting diode (LED) array, wherein the beam shaping parameter comprises a beam direction, a beam intensity, and a scanning track; and sending a beam to the LED array according to the beam shaping parameter. According to the method and device, displayed content can be presented on an LED array through beam shaping. The LED array does not need input of a power supply and can implement a passive display, and therefore can be deployed more flexibly.