Self-Assembled LED Display Electrode Structure for Repairable Efficiency
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Solution Overview
Problem
Current display devices face challenges in increasing luminous efficiency, repairing defective light emitting diodes, reducing power consumption, and optimizing space for redundancy LEDs, particularly in self-assembled LED systems.
Innovation Solution
The display device incorporates a substrate with sub-pixels, assembly electrodes, protrusions, reflective patterns, and contact electrodes to enhance light emission directionality, facilitate easy repair of defective LEDs, and reduce wiring resistance, while eliminating the need for redundancy LEDs by using additional LEDs for repair and optimizing electrode connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If reflective patterns are added to increase front-direction light emission, then luminous efficiency is improved, but device complexity increases
Solution Approach 1:
The reflective pattern is integrated with the protrusion structure, where the protrusion serves both as a mechanical support element and as a substrate for the reflective pattern. This merging of functions increases front-direction light emission without adding separate components, thereby improving luminous efficiency while controlling device complexity.
2Use of energy by moving object
If contact electrodes are connected to reflective patterns to reduce wiring resistance, then power consumption is reduced, but manufacturing complexity increases
Solution Approach 1:
The contact electrode is directly connected to the reflective pattern, merging the electrical connection function with the optical reflection function. This integration reduces wiring resistance and power consumption while avoiding the need for separate connection structures, thereby controlling manufacturing complexity.
3Measurement precision
If redundancy light emitting diodes are removed to achieve high resolution, then display resolution is improved, but repairability deteriorates
Solution Approach 1:
The protrusion structure serves multiple functions: it provides mechanical support for the LED, carries the reflective pattern for light directionality, and includes contact electrodes for electrical connection. This multi-functional design eliminates the need for separate redundancy LED spaces while maintaining repairability through the integrated structure.
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
This configuration increases front-direction light emission, simplifies the repair process, reduces power consumption, and achieves high resolution by eliminating redundant components, thereby enhancing overall display performance.
Implementation Method 1
a first reflective pattern which is disposed on a side surface of the first protrusion opposite to the light emitting diode; a second reflective pattern which is disposed on a side surface of the second protrusion opposite to the light emitting diode
Data Source
AI summary
A display device disclosed herein includes a first assembly electrode and a second assembly electrode which are disposed on each of the plurality of sub pixels and are spaced apart from each other. The device includes a first and second protrusions on the first and second assembly electrodes, respectively. The device includes a light emitting diode between the first and second protrusions. The device includes a first reflective pattern on a side surface of the first protrusion and a second reflective pattern on a side surface of the second protrusion. The device includes a first contact electrode which is disposed on the first protrusion and the first reflective pattern and is electrically connected to the first assembly electrode. The device includes a second contact electrode which is disposed on the second protrusion and the second reflective pattern and is electrically connected to the second assembly electrode.