Mini LED Driver Layout With Distributed Current Paths
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Solution Overview
Problem
Existing light emitting diode (LED) technologies face challenges in efficiently driving large arrays of Mini LEDs for display applications, leading to high power consumption and temperature increases due to concentrated current pathways.
Innovation Solution
A light emitting module design with row and column driving chips spaced apart and connected via dedicated signal terminals, allowing for distributed current pathways and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If concentrated current pathways are used to drive large arrays of Mini LEDs, then the driving capability is improved, but power consumption increases and temperature rises
Solution Approach 1:
The patent divides the current driving function into multiple independent current source circuits, each responsible for a specific column of light emitting elements. This segmentation distributes the total current load across multiple circuits, preventing any single pathway from carrying excessive current, thereby reducing power consumption and heat generation while maintaining the ability to drive large arrays of Mini LEDs
2Power
If concentrated current pathways are used to drive large arrays of Mini LEDs, then the driving capability is improved, but temperature increases
Solution Approach 1:
By segmenting the current driving function into multiple independent current source circuits distributed across different columns, the patent prevents concentration of thermal energy in any single pathway. Each current source circuit handles a portion of the total current, distributing heat generation across multiple locations and reducing peak temperatures, thus maintaining driving capability while controlling temperature rise
3Use of energy by moving object
If row and column driving chips are spaced apart with dedicated signal terminals, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The patent segments the driving function into separate row driving chips and column driving chips, with each type handling specific scanning or channel signals. This functional segmentation allows for optimized signal pathways and reduced power consumption through dedicated current source circuits, while the modular chip architecture manages complexity by distributing functions across multiple specialized components rather than requiring a single complex integrated circuit
Solution Approach 2:
The patent introduces a two-dimensional array architecture with row and column dimensions, where driving chips are distributed across different spatial positions. This dimensional expansion allows for parallel signal processing and distributed current management, reducing power consumption through efficient signal routing while organizing complexity in a structured two-dimensional layout rather than a monolithic design
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 design achieves efficient driving of Mini LED arrays with reduced power consumption and temperature, enabling high dynamic contrast and uniform light transmission.
Implementation Method 1
a light emitting element array provided on the first substrate, the light emitting element array includes a plurality of light emitting elements arranged in an array
Data Source
AI summary
A light emitting module includes: a light emitting element array provided on a first substrate, including a plurality of light emitting elements arranged in an array in a row direction and a column direction, each of which includes a first electrode and a second electrode, wherein a driving current of the light emitting element is greater than or equal to 1 mA; and a plurality of row driving chips and a plurality of column driving chips provided on the first substrate. At least one row driving chip and at least one column driving chip are spaced apart in the row direction and the column direction. At least one row driving chip and at least one column driving chip are respectively electrically connected to the first electrodes of at least one row of light emitting elements and the second electrodes of at least one column of light emitting elements.