Micro LED Display Pixel Region Merging for Yield
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Solution Overview
Problem
The increasing resolution of micro-LED displays requires a larger number of micro-LEDs to be transferred, leading to decreased yield and higher manufacturing costs due to the complexity of the transfer process.
Innovation Solution
A micro light-emitting device display apparatus with a driving substrate divided into pixel regions, where multiple micro light-emitting devices share light-emitting regions across adjacent pixel areas, reducing the overall number of devices needed and optimizing their placement for efficient energy use and cost reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of micro-LED displays is increased, then the display quality is improved, but the number of micro-LEDs required increases leading to decreased yield and higher manufacturing costs
Solution Approach 1:
The patent combines multiple pixel regions (first pixel region and second pixel region) into a single micro light-emitting device. Each micro light-emitting device includes multiple light-emitting regions (first light-emitting regions and second light-emitting regions) that correspond to different pixel regions, thereby reducing the total number of micro light-emitting devices needed and improving manufacturing yield
Solution Approach 2:
Each micro light-emitting device is designed to serve multiple functions by having light-emitting regions that can correspond to multiple pixel regions. The device can emit different colors (red, green, blue) through different light-emitting regions, allowing one device to replace multiple specialized devices
2Measurement precision
If the resolution of micro-LED displays is increased, then the display quality is improved, but the number of transfer times increases leading to higher production costs
Solution Approach 1:
The patent merges multiple pixel regions into a single micro light-emitting device structure, reducing the total number of devices that need to be transferred. This consolidation directly reduces the number of transfer times required in the manufacturing process, thereby lowering production costs
Solution Approach 2:
The micro light-emitting device is segmented into multiple independently controllable light-emitting regions within a single device structure. This segmentation allows the device to function across multiple pixel regions without requiring multiple separate devices, simplifying the transfer process
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 allows for high-resolution displays with reduced power consumption and production costs by effectively utilizing fewer micro light-emitting devices across multiple pixel regions, enhancing energy efficiency and manufacturing efficiency.
Implementation Method 1
Each of the first micro light-emitting devices is bonded to the driving substrate and has a plurality of first light-emitting regions independently controlled. Each of the second micro light-emitting devices is bonded to the driving substrate and has a plurality of second light-emitting regions independently controlled. Each of the third micro light-emitting devices is bonded to the driving substrate and has a plurality of third light-emitting regions independently controlled.
Data Source
AI summary
A micro light-emitting device display apparatus includes a driving substrate and a plurality of micro light-emitting devices. The micro light-emitting devices are disposed on the driving substrate. The micro light-emitting devices include a plurality of first, second and third micro light-emitting devices. Each of the first, the second and the third micro light-emitting devices respectively has a plurality of first, second, and third light-emitting regions independently controlled. A first light-emitting region of a first micro light-emitting device, a second light-emitting region of a second micro light-emitting device, and a third light-emitting region of a third micro light-emitting device are located in a first pixel region. A first light-emitting region of another first micro light-emitting device, a second light-emitting region of another second micro light-emitting device, and another third light-emitting region of the third micro light-emitting device are located in a second pixel region.