Single-IC LED Lamp Bead Circuit for Bidirectional Flashing
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Solution Overview
Problem
Existing LED lamp beads require two built-in ICs for control, increasing manufacturing costs and complicating the manufacturing process.
Innovation Solution
A plug-in LED lamp bead with a single IC chip featuring a bidirectional flashing function, integrated with an H-bridge rectifier circuit and other modules, connected to two light-emitting chips via brackets and packaged with epoxy resin, allowing for non-polarity wiring and multiple working modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two built-in ICs are used to control LED lamp beads for lighting and flashing, then the control function is achieved, but manufacturing costs increase and the number of connection processes increases
Solution Approach 1:
The patent merges the functions of two separate ICs (light control IC and flashing control IC) into a single integrated control IC. This single IC contains both the light drive port and flashing drive port, eliminating the need for two separate components and reducing connection complexity while maintaining full control functionality.
Solution Approach 2:
The control IC is designed with multi-functionality, incorporating both lighting control and flashing control capabilities within a single device. The IC can operate in different modes (lighting mode and flashing mode) by receiving different input signals, making it a universal controller that replaces two specialized ICs.
2Reliability
If two built-in ICs are used to control LED lamp beads, then the control function is achieved, but the number of connection processes increases which reduces manufacturing efficiency
Solution Approach 1:
By combining two ICs into one, the patent reduces the number of soldering connections required during assembly. The single control IC has fewer external connections compared to two separate ICs, simplifying the manufacturing process and improving production efficiency.
3Productivity
If a single IC chip with bidirectional flashing function is used, then manufacturing efficiency is improved and structure is simplified, but the IC chip must integrate multiple circuits including H-bridge rectifier, RC oscillator, PWM generator, and driver stages
Solution Approach 1:
The control IC is designed as a multi-functional integrated circuit that incorporates H-bridge rectifier, RC oscillator, PWM generator, and driver stages within a single chip. This allows the IC to handle both lighting and flashing operations with bidirectional control capability, simplifying the overall device structure while improving manufacturing efficiency.
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
Facilitates efficient manufacturing by reducing components, enables flexible flashing modes, and enhances the decorative effect of lighting products.
Implementation Method 1
an IC chip having a bidirectional flashing function is bonded to any one of the brackets by using an electrically conductive and thermally conductive adhesive
Implementation Method 2
an IC chip having a bidirectional flashing function is bonded to any one of the brackets by using an electrically conductive and thermally conductive adhesive
Implementation Method 3
the two brackets, the IC chip and the two light-emitting chips are packaged with a transparent epoxy resin into a package body
Data Source
AI summary
Disclosed is a plug-in light-emitting diode (LED) lamp bead with a built-in single integrated circuit (IC) chip having a bidirectional flashing function. An IC chip having a bidirectional flashing function is bonded to any one of brackets by using an electrically conductive and thermally conductive adhesive, and two light-emitting chips are bonded to the two brackets respectively by using an electrically conductive and thermally conductive adhesive; a first power driving electrode of the IC chip is electrically connected to a first bracket and a positive electrode of a first light-emitting chip, and a first output terminal of the IC chip is electrically connected to a negative electrode of the first light-emitting chip; a second power driving electrode of the IC chip is electrically connected to a second bracket and a positive electrode of a second light-emitting chip.