Integrated LED Chip with Common Electrode for Display Manufacturing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices with light-emitting diode (LED) technology face challenges in reducing manufacturing costs and improving yield due to the high number of LED chips required, which increases manufacturing time and complexity.
Innovation Solution
The display device design includes a light-emitting diode chip disposed corresponding to multiple transistors, reducing the number of LED chips needed and utilizing a common electrode to connect them, thereby simplifying the manufacturing process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LED chips are used to achieve full-color display, then display quality is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent combines multiple light-emitting units (red, green, blue LEDs) into a single integrated LED chip structure. This single chip contains multiple emission regions that can be controlled by separate transistors, merging what would traditionally require multiple separate chips into one unified component, thereby reducing manufacturing complexity while maintaining full-color display capability
Solution Approach 2:
The single LED chip serves multiple functions by incorporating different light-emitting materials in different regions to produce red, green, and blue light simultaneously. This multi-functional chip replaces what would traditionally require three separate single-color LED chips, simplifying the overall device structure and manufacturing process
2Illumination intensity
If multiple LED chips are attached during manufacturing, then full-color display is achieved, but manufacturing time increases
Solution Approach 1:
By integrating multiple light-emitting units into a single LED chip, the patent reduces the number of attachment steps required during manufacturing. Instead of attaching multiple separate LED chips to the substrate, only one chip needs to be mounted, significantly reducing manufacturing time while still achieving full-color display through the multiple emission regions within the single chip
3Adaptability or versatility
If multiple LED chips are used, then color diversity is improved, but yield decreases
Solution Approach 1:
The patent integrates multiple light-emitting units with different color emission characteristics into a single LED chip structure. This integration reduces the total number of components that need to be manufactured and assembled, thereby improving manufacturing yield. The single chip contains red, green, and blue emission regions that can be fabricated in one manufacturing process rather than requiring multiple separate chips
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 approach reduces the number of LED chips attached during manufacturing, lowering costs and improving yield while achieving full-color display with reduced manufacturing time and device thickness.
Implementation Method 1
The recombination radiation of electron and hole in the light-emitting diode may produce electromagnetic radiation (such as light) through the current at the p-n junction
Implementation Method 2
in the forward bias p-n junction formed by direct band gap materials such as GaAs or GaN, the recombination of electron and hole injected into the depletion region results in electromagnetic radiation such as light
Data Source
AI summary
A display device is provided. The display device includes a first substrate; a first transistor and a second transistor disposed over the first substrate; a common electrode disposed over the first substrate; and a light-emitting diode chip (LED chip) disposed over the first substrate and disposed corresponding to the first transistor and the second transistor. The light-emitting diode chip includes a first light-emitting unit and a second light-emitting unit, wherein the first light-emitting unit is electrically connected to the first transistor and the common electrode, and the second light-emitting unit is electrically connected to the second transistor and the common electrode.