Pixel Repairing Blocks for Display Sub-Pixel Compensation
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Solution Overview
Problem
In display panel manufacturing, LEDs are prone to damage, leading to increased repair probabilities and costs, with existing solutions reducing available space and increasing LED costs by installing multiple LEDs in each pixel.
Innovation Solution
A display device with a power line group configuration that includes pixel repairing blocks, where adjacent sub-pixel units are electrically coupled via a repairing line to enable optical compensation, allowing a functioning sub-pixel unit to compensate for a damaged one, maintaining light emission and reducing repair costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple LEDs are installed in each panel pixel to reduce repair probability, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies beforehand cushioning by pre-establishing a pixel repairing block structure that includes a first sub-pixel unit and a second sub-pixel unit of the same color, connected through shared power lines. This redundant structure is built in advance during manufacturing, allowing one sub-pixel unit to compensate for the other if damaged, thereby reducing repair probability without requiring complex post-manufacturing solutions
Solution Approach 2:
The patent merges adjacent sub-pixel units of the same color into a pixel repairing block, where the first sub-pixel unit and second sub-pixel unit share common power supply terminals and are electrically connected. This merging creates a functional redundancy that improves reliability while avoiding the complexity of completely independent LED installations in each pixel
2Reliability
If multiple LEDs are installed in each panel pixel to reduce repair probability, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies universality by designing the pixel repairing block where sub-pixel units can serve multiple functions: normally both sub-pixel units operate to provide display function, but when one is damaged, the other can compensate to maintain display function. The shared power line structure allows the same hardware to serve both normal operation and fault tolerance purposes, reducing the need for additional dedicated repair components
Solution Approach 2:
By merging adjacent sub-pixel units into a repairing block with shared power lines, the patent reduces the total number of independent LED installations needed compared to having fully independent pixels. This merging approach lowers manufacturing costs while maintaining reliability through the compensatory mechanism
3Reliability
If multiple LEDs are installed in each panel pixel to reduce repair probability, then reliability is improved, but available space in panel pixel is reduced
Solution Approach 1:
The patent applies another dimension by organizing sub-pixel units in a spatial arrangement where the first sub-pixel unit and second sub-pixel unit are positioned adjacent to each other and share power lines across different spatial dimensions. This dimensional organization allows efficient use of panel space while maintaining the redundancy needed for reliability
Solution Approach 2:
By merging adjacent sub-pixel units of the same color into a compact pixel repairing block, the patent reduces the total space required compared to having fully independent pixels with separate LED installations. The shared power line structure allows closer spacing of components, optimizing the use of available panel 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
This configuration minimizes the impact of damaged sub-pixel units on overall display performance, maintaining visual impact with reduced LED costs and space usage by enabling optical compensation between adjacent sub-pixel units of the same color.
Implementation Method 1
a light emitting element in the first sub-pixel unit and a light emitting element in the second sub-pixel unit
Data Source
AI summary
A display device includes a plurality of pixel repairing blocks and each pixel repairing block includes a first sub-pixel unit and a second sub-pixel unit. The first sub-pixel unit has a first power supply terminal and a second power supply terminal. The first power supply terminal of the first sub-pixel unit is electrically coupled to a first power line and the second power supply terminal of the first sub-pixel unit is electrically coupled to a second power line. The second sub-pixel unit has a first power supply terminal and a second power supply terminal. The first power supply terminal of the second sub-pixel unit is electrically coupled to the first power line and the second power supply terminal of the second sub-pixel units electrically coupled to a third power line. The second sub-pixel unit is adjacent to the first sub-pixel unit, and both the second sub-pixel unit and the first sub-pixel unit are configured to generate a first colored light. The plurality of pixel repairing blocks includes a first pixel repairing block. The second power supply terminal of the first sub-pixel unit of the first pixel repairing block is electrically coupled to the second power supply terminal of the second sub-pixel unit of the first pixel repairing block.