Integrated RGB LED Pixel Substrate for Display Efficiency
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Solution Overview
Problem
Traditional liquid crystal displays suffer from low light energy efficiency due to the use of polarizers, and existing LED-based displays require multiple single-colored LED substrates, increasing costs and complexity.
Innovation Solution
A method for forming a pixel of an LED light source by integrating multiple micro-chip LED structures of different colors on a single substrate, where each pixel includes red, green, and blue LEDs, allowing for improved light efficiency and color reproduction by emitting different colors of light, and using a light-transparent intermediate layer with adhesive properties for electrical connection and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple single-colored LED substrates are used to achieve full-color display, then color reproduction is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple single-colored LED chips (red, green, blue) onto a single substrate to form a pixel. This merging approach integrates three separate LED substrates into one, achieving full-color display capability while reducing device complexity and the number of components required.
Solution Approach 2:
The substrate is designed to support multiple types of LED chips with different emission colors simultaneously. This multi-functional substrate can accommodate red, green, and blue LED chips, enabling a single substrate to perform the function previously requiring three separate substrates.
2Illumination intensity
If multiple single-colored LED substrates are used, then color reproduction is improved, but manufacturing cost increases
Solution Approach 1:
By merging multiple LED chips onto one substrate, the patent reduces the total number of substrates that need to be manufactured, transported, and assembled. This consolidation lowers manufacturing costs despite maintaining full-color display capability.
3Ease of operation
If traditional liquid crystal display with polarizers is used, then display function is achieved, but light energy efficiency deteriorates
Solution Approach 1:
The patent extracts and eliminates the polarizer component from the display system by using LED-based direct view display technology. This removal of the polarizer prevents the loss of half the light energy that occurs in traditional LCDs, thereby improving light energy efficiency.
4Ease of manufacture
If multiple LED chips are integrated on one substrate, then manufacturing cost is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the pixel into distinct red, green, and blue LED chip regions on the substrate. This segmentation allows for systematic placement and assembly of individual LED chips in predetermined locations, facilitating precise positioning while maintaining cost-effectiveness.
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 solution enhances light efficiency and color reproduction in displays while reducing the number of required electrical inputs and manufacturing costs by integrating multiple colored LEDs on a single substrate, eliminating the need for polarizers and simplifying the manufacturing process.
Implementation Method 1
using a light-transparent intermediate layer with adhesive properties for electrical connection
Implementation Method 2
a first light-emitting active layer and a second light-emitting active layer emit different colors of light
Data Source
AI summary
A method for forming a pixel of an LED light source is provided. The method includes: forming a first layer on a first substrate; forming a second layer and a first light-emitting active layer on the first layer; forming a first intermediate layer on the second layer; forming a third layer on a second substrate; forming a fourth layer and a second light-emitting active layer on the third layer; placing the third layer, the fourth layer, and the second light-emitting active layer on the first intermediate layer, wherein the first light-emitting active layer and the second light-emitting active layer emit different colors of light. A method for forming a plurality of light-emitting diode pixels arranged in a two-dimensional array is also provided.