Shared Redundancy Sub-Pixel Layout for Micro-LED Displays
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Solution Overview
Problem
Existing display devices, particularly those using micro-LEDs, face challenges in reducing redundancy sub-pixels, which complicates their structure and increases manufacturing costs and power consumption.
Innovation Solution
The integration of pixel circuits into a single micro-driver and the sharing of redundancy sub-pixels between adjacent pixels to reduce redundancy, simplifying the structure and lowering power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each pixel has dedicated redundancy sub pixels, then display reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The redundancy sub-pixels are designed to serve multiple adjacent pixels simultaneously. A single set of redundancy sub-pixels can replace defective sub-pixels in any of the surrounding pixels, making the redundancy mechanism universal rather than dedicated to each individual pixel. This reduces the total number of redundancy sub-pixels needed while maintaining display reliability.
Solution Approach 2:
Multiple pixels share a common set of redundancy sub-pixels by merging the redundancy resources. Instead of having separate redundancy sub-pixels for each pixel, the patent combines them into shared resources that can be dynamically allocated to any pixel that experiences a defect, thereby reducing overall device complexity.
2Reliability
If each pixel has dedicated redundancy sub pixels, then display reliability is improved, but manufacturing cost increases
Solution Approach 1:
The shared redundancy sub-pixels serve multiple pixels, reducing the total component count. This universality directly lowers manufacturing costs by requiring fewer materials and simpler assembly processes while still providing reliable defect coverage across the display.
Solution Approach 2:
The redundancy sub-pixels are designed to be dynamically activated only when needed, rather than being permanently dedicated to each pixel. This allows the system to recover manufacturing resources by producing fewer redundancy components while maintaining the ability to handle defects through on-demand activation of shared redundancy resources.
3Use of energy by moving object
If multiple pixel circuits are integrated into a single micro-driver, then power consumption is reduced, but control complexity increases
Solution Approach 1:
Multiple pixel circuits are merged into a single micro-driver, consolidating control functions. This integration reduces the total number of independent control units, thereby lowering power consumption associated with multiple separate circuit operations while managing control complexity through unified architecture.
Solution Approach 2:
The micro-driver is designed with multi-functionality to control multiple pixel circuits using shared control lines and timing signals. This universal control approach reduces power consumption by eliminating redundant control circuitry while managing complexity through standardized control protocols that can handle multiple pixels.
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 redundancy sub-pixels, simplifies the display device structure, and lowers manufacturing costs while maintaining operational efficiency with reduced power consumption.
Implementation Method 1
a plurality of main micro-light emitting diodes (micro-LEDs, mLEDs, or μLEDs) disposed in the plurality of main sub pixels
Data Source
AI summary
A display device according to one or more examples may include: a substrate; a plurality of pixels including a plurality of main sub pixels; a plurality of redundancy sub pixels disposed between the plurality of main sub pixels; one or more pixel drive circuits disposed on the substrate; a plurality of main micro-LEDs disposed in the plurality of main sub pixels and electrically connected to the pixel drive circuit; and a plurality of redundancy micro-LEDs disposed in the plurality of redundancy sub pixels and electrically connected to the pixel drive circuit, in which a pair of pixels, among the plurality of pixels, share the plurality of redundancy sub pixels. The plurality of pixels may thus use and share the plurality of redundancy sub pixels, such that the number of redundancy sub pixels may be reduced, and manufacturing costs may be reduced.