Micro-LED Display Substrate Segmentation for Resolution
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Solution Overview
Problem
Current display technologies, such as TFT-LCD and OLED, face issues with high power consumption, inefficient response speed, and increased manufacturing costs, particularly in wearable devices and smartphones, due to the constant need for backlight power and complex pixel driving mechanisms.
Innovation Solution
A display apparatus utilizing micro-light emitting diodes (LEDs) with a thin-film transistor (TFT) panel and a phosphor layer on a transparent substrate, which converts blue light emitted by LEDs into green and red light, reducing substrate thickness and preventing light mixing through blocking portions, and an anisotropic conductive film for electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick transparent substrate is used, then structural strength is improved, but light mixing between adjacent LEDs occurs and resolution deteriorates
Solution Approach 1:
The patent divides the transparent substrate into multiple isolated sections, each positioned over individual LED elements. This segmentation prevents light from adjacent LEDs from mixing through the substrate, thereby maintaining high display resolution while using a substrate that provides adequate structural strength.
2Use of energy by moving object
If micro-LEDs are used, then power consumption is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The transparent substrate is divided into multiple sections, each corresponding to individual micro-LED elements. This segmentation approach allows for precise placement and alignment of each micro-LED section independently, thereby enabling the use of power-efficient micro-LEDs while managing the manufacturing precision requirements through modular construction.
3Manufacturing precision
If blocking portions are added to prevent light mixing, then display resolution is improved, but device complexity increases
Solution Approach 1:
The patent combines the light-blocking function with the substrate structure itself by creating raised sections of the transparent substrate that serve dual purposes: providing structural support and acting as blocking portions to prevent light mixing. This merging approach improves display resolution without significantly increasing device complexity.
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 solution achieves low power consumption, improved efficiency, and reduced manufacturing costs, enabling high-resolution displays suitable for wearable devices and smartphones with enhanced brightness uniformity and extended lifespan.
Implementation Method 1
a phosphor layer disposed on the transparent substrate and configured to emit at least one of blue light, green light, and red light by converting at least a portion of a wavelength of light emitted from the light emitting diodes
Data Source
AI summary
A display apparatus including a light emitting diode part including a plurality of regularly arranged light emitting diodes, and a thin-film transistor (TFT) panel part including a plurality of TFTs configured to drive the light emitting diodes disposed on the TFT panel part. The light emitting diode part further includes a transparent substrate disposed on the light emitting diodes, and a phosphor layer disposed on the transparent substrate and configured to emit at least one of blue light, green light, and red light by converting at least a portion of a wavelength of light emitted from the light emitting diodes, in which a thickness of the transparent substrate is less than a thickness of the phosphor layer.