Micro-LED Display Panel Segmentation Against Adjacent LED Dark Spots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Micro-display devices using micro-LEDs face issues where a short-circuit failure in one LED darkens the adjacent LED, leading to dark spots in the display.
Innovation Solution
The display panel design includes sub-pixels with separate anodes and cathodes for each LED, allowing independent operation and preventing short-circuit failures from affecting adjacent LEDs, and incorporates compensation circuits to maintain display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If two LEDs are disposed in parallel in a single sub-pixel to increase light emission efficiency, then luminous efficiency is improved, but when one LED experiences short-circuit failure, the other LED is also darkened causing reliability to deteriorate
Solution Approach 1:
The patent divides a single sub-pixel into multiple independent regions, each containing its own LED and compensation circuit. This segmentation allows individual LEDs to be isolated electrically, so that when one LED fails due to short-circuit, the failure does not propagate to other LEDs in the same sub-pixel. Each segmented region can be independently controlled and compensated, maintaining overall sub-pixel functionality despite individual LED failures.
2Duration of action of stationary object
If micro-LEDs are used to create micro-display devices with high impact resistance and longer lifespan, then durability is improved, but the short-circuit failure mode causes dark spots that deteriorate display quality
Solution Approach 1:
The patent incorporates compensation circuits in each segmented region that actively monitor and detect short-circuit failures in LEDs. When a failure is detected, the compensation circuit generates a compensation signal to adjust the driving voltage or current, thereby compensating for the failed LED's contribution. This feedback mechanism prevents dark spots by dynamically adjusting the operation of remaining functional LEDs to maintain uniform display output.
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 design reduces dark spots and enables low-power operation with improved process efficiency, high luminance, and extended lifespan by ensuring individual LED control and compensation for potential failures.
Implementation Method 1
micro-display devices using light-emitting diodes (LEDs), which are inorganic light-emitting elements
Data Source
AI summary
Embodiments disclose a display panel including a plurality of pixels, and a gate line and a data line that are connected to the plurality of pixels, wherein each of the plurality of pixels includes a 1-1 sub-pixel and a 1-2 sub-pixel of a first color, a 2-1 sub-pixel and a 2-2 sub-pixel of a second color, and a 3-1 sub-pixel and a 3-2 sub-pixel of a third color, wherein each of the 2-1 sub-pixel and the 2-2 sub-pixel includes a light-emitting element and a compensation circuit, and the compensation circuit of the 2-1 sub-pixel and the compensation circuit of the 2-2 sub-pixel are connected to one data line, and a display device including the same.