Segmented Light-Emitting Module Redundancy for Defect Compensation
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Solution Overview
Problem
Conventional light-emitting modules are prone to failure due to defective emission regions, which are often not corrected due to high analysis and processing costs, leading to reduced reliability and yield, especially in display devices where close image points require complex and costly correction.
Innovation Solution
A light-emitting module with segmented image points, where adjacent emission regions of the same type operate redundantly, allowing a defective region to be compensated by an adjacent one, ensuring the module remains functional and reducing the need for redundant emission regions, thus increasing yield and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional light-emitting modules are used with single emission regions, then the structure is simple and production cost is low, but the reliability is reduced due to defective emission regions
Solution Approach 1:
The patent divides each image point into multiple emission regions (e.g., first emission region and second emission region) of the same type. This segmentation allows the module to compensate for defective regions by using adjacent regions, thereby improving reliability without requiring a completely different structural approach.
Solution Approach 2:
The patent implements redundant emission regions that are prepared in advance to compensate for potential defects. By having backup emission regions ready before operation, the system can maintain functionality even when some regions fail, effectively cushioning against reliability issues.
2Reliability
If defective emission regions are corrected through analysis and processing, then the reliability improves, but the production cost and complexity increase significantly
Solution Approach 1:
Instead of correcting defective regions after production, the patent builds in redundancy from the start. Multiple emission regions are manufactured with each image point, providing built-in compensation that eliminates the need for costly post-production analysis and correction of defective regions.
Solution Approach 2:
The system uses its own redundant emission regions to compensate for defects automatically. The adjacent emission regions of the same type can take over the function of defective regions, allowing the module to self-correct without external intervention or complex processing.
3Reliability
If redundant emission regions are added to compensate for defects, then the reliability improves, but the device complexity and area increase
Solution Approach 1:
The patent segments each image point into multiple smaller emission regions that are arranged in a compact grid pattern. This segmentation allows for efficient space utilization while providing redundancy, as the regions are distributed throughout the module area rather than adding separate backup regions.
Solution Approach 2:
The patent combines multiple emission regions of the same type within each image point, where they work together to provide both the primary function and redundancy. This merging approach allows the system to achieve reliability goals without requiring separate dedicated backup regions that would increase overall area.
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 solution enables light-emitting modules to remain fully functional despite individual defective emission regions, reducing production costs, increasing reliability, and extending service life by automatically compensating for defects without the need for extensive testing or correction.
Implementation Method 1
a plurality of emission regions which are configured to emit light during operation... The emission regions can be based, inter alia, on a semiconductor material, in particular on a nitride compound semiconductor material
Data Source
AI summary
A light-emitting module and a display device including the same are disclosed. In an embodiment a light-emitting module includes a plurality of emission regions configured to emit light, at least one first emission region and at least one second emission region of a first type configured to emit light of a first color locus and at least one first emission region and at least one second emission region of a second type configured to emit light of a second color locus and a control device for supplying the emission regions with current, wherein the emission regions are arranged on a common semiconductor chip, wherein the first color locus is different from the second color locus, wherein the first and second emission regions of the first type are adjacent to one another, and wherein the first and second emission regions of the second type are adjacent to one another.