Transparent Micro-Pixel Display Module With Modular IC-LED Packages
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Solution Overview
Problem
Current display technologies, particularly liquid crystal displays (LCDs), face challenges in reducing thickness due to complex structures, and self-emitting displays like micro-LEDs offer better contrast and efficiency but require complex configurations that complicate inspection and detection of defective components.
Innovation Solution
A transparent display module comprising a transparent substrate with a two-dimensional grid line pattern, micro-pixel integrated circuits (ICs), inorganic light emitting elements, and transparent areas, where the micro-pixel ICs supply driving currents to the inorganic light emitting elements, and the module includes a micro-pixel package with a relay substrate and stacked IC and light emitting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LCD structure is used, then light transmission can be achieved, but the structure becomes complex and thickness increases due to backlight unit and liquid crystal layer
Solution Approach 1:
The patent extracts and removes the backlight unit and liquid crystal layer from the display structure, replacing them with self-emitting micro-LED elements that generate their own light, thereby eliminating the need for separate light supply components and simplifying the overall structure
Solution Approach 2:
The micro-LED elements are self-emitting, meaning each pixel generates its own light without requiring an external backlight unit, enabling the display to serve itself with light generation functionality integrated into the pixel structure
2Illumination intensity
If micro-LED self-emitting display is used, then contrast ratio and brightness improve, but device complexity increases and inspection of defective components becomes difficult
Solution Approach 1:
The patent segments the micro-LED display into modular micro-pixel packages, each containing a small number of micro-LEDs and associated circuitry, arranged in a grid pattern on the substrate, which simplifies the configuration and enables easier inspection compared to fully integrated designs
Solution Approach 2:
The patent introduces a transfer substrate as an intermediary component that facilitates the placement and inspection of micro-LEDs before final assembly, allowing defective components to be identified and replaced more easily through the modular package structure
3Duration of action of stationary object
If inorganic light emitting elements are used, then lifespan and light emission efficiency increase, but encapsulation requirements increase complexity
Solution Approach 1:
The patent merges the micro-LED elements with the substrate structure, integrating the light-emitting components directly into the display panel architecture, which reduces the need for separate encapsulation layers and simplifies the overall device structure while maintaining the long lifespan benefits of inorganic materials
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 transparent display module achieves a simpler structure, higher resolution, and improved contrast and brightness, while also enabling flexible and transparent display applications without the need for backlight units or liquid crystal layers.
Implementation Method 1
a plurality of inorganic light emitting elements provided on the line pattern or the plurality of micro-pixel ICs
Data Source
AI summary
A transparent display module includes: a transparent substrate; a line pattern provided on the transparent substrate in a form of a two-dimensional grid; a plurality of micro-pixel integrated circuits (ICs) provided on the line pattern; a plurality of inorganic light emitting elements provided on the line pattern or the plurality of micro-pixel ICs; a plurality of transparent areas formed in areas in which the line pattern is not provided, and at least one pixel circuit configured to supply a driving current to the plurality of inorganic light emitting elements.