LED Pixel Synchronization With Bidirectional String Failure Mitigation
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Solution Overview
Problem
Conventional LED displays face challenges with high complexity and cost due to increased pixel density and thermal crowding as pixel pitches decrease, necessitating improved LED array devices with active control and synchronization for efficient operation.
Innovation Solution
Incorporation of active electrical elements within LED packages that receive control signals and actively maintain operating states, enabling synchronized operation of LED pixels and failure mitigation through bidirectional communication ports, along with pulse width modulation and counter-based synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pixel pitch is decreased to increase display resolution, then image resolution is improved, but device complexity and manufacturing cost increase due to higher density of electrical devices
Solution Approach 1:
The patent combines multiple electrical devices (driver circuitry, capacitors, transistors) into integrated LED packages, where each package contains LED chips and associated control electronics. This integration reduces the number of discrete components needed on the display panel, thereby decreasing device complexity and manufacturing cost while maintaining high image resolution through small pixel pitches.
2Manufacturing precision
If pixel pitch is decreased to increase display resolution, then image resolution is improved, but thermal crowding increases due to closer spacing of electrical devices
Solution Approach 1:
By integrating driver circuitry and control devices within the LED packages themselves, the patent reduces the overall device density on the panel. This consolidation improves thermal management by reducing thermal crowding, as heat-generating components are more efficiently distributed and managed within integrated modules rather than densely packed as separate discrete devices.
3Stability of the object's composition
If active electrical elements are integrated within LED packages for synchronized operation, then operation synchronization is improved, but device complexity increases due to additional control circuitry
Solution Approach 1:
The patent integrates active electrical elements (driver circuitry, capacitors, transistors) directly within the LED packages, combining the functions of light emission and active control in a single integrated unit. This approach improves operation synchronization by ensuring that each LED pixel can be independently and simultaneously controlled, while the integration actually reduces overall device complexity by eliminating the need for separate control boards and reducing the number of external connections required.
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 synchronized operation of LED pixels within milliseconds, reduces complexity and cost, and enhances failure mitigation in high-resolution LED displays.
Implementation Method 1
When a bias is applied across the doped layers, holes and electrons are injected into the one or more active layers where they recombine to generate emissions such as visible light or ultraviolet emissions
Data Source
AI summary
Synchronization for light emitting diode (LED) pixels in an LED display is provided so that one or more actions of all LED pixels are able to be initiated at the same time, or within a millisecond. LED displays and corresponding systems may include a controller that is configured for sending communication signals to one or more strings of LED pixels. Active electrical elements within each LED pixel may be configured to receive the communication signals, generate corresponding synchronization signals, and respond in a manner that is coordinated with all other LED pixels in a particular LED display. Failure mitigation of LED pixel failures within an LED string is provided where the controller is configured with bidirectional communication ports for communication with the LED string. In a failure mitigation process, the bidirectional communication ports may switch directions to provide communication signals to both sides of an LED string.